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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.           )

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AECOM
1999 AVENUE OF THE STARS, SUITE 2600
LOS ANGELES, CALIFORNIA 90067

Dear AECOM Stockholder:

You are cordially invited to attend the 2015 Annual Meeting of Stockholders (the "2015 Annual Meeting") of AECOM, which will be held on Wednesday, March 4, 2015, at 8:00 a.m. local time at The Hyatt Regency Century Plaza, 2025 Avenue of the Stars, Los Angeles, California 90067.

Details of the business to be conducted at the 2015 Annual Meeting are given in the attached Notice of Annual Meeting of Stockholders and the attached Proxy Statement.

Whether or not you plan to attend the 2015 Annual Meeting in person, it is important that your shares be represented. The attached Proxy Statement contains details about how you may vote your shares.

Thank you for your cooperation.

Sincerely,

John M. Dionisio
Executive Chairman

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AECOM
1999 AVENUE OF THE STARS, SUITE 2600
LOS ANGELES, CALIFORNIA 90067

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON MARCH 4, 2015

The 2015 Annual Meeting of Stockholders (the "2015 Annual Meeting") of AECOM (the "Company," "our" or "we") will be held on Wednesday, March 4, 2015, at 8:00 a.m. local time at The Hyatt Regency Century Plaza, 2025 Avenue of the Stars, Los Angeles, California 90067. At the 2015 Annual Meeting, you will be asked to:

1.

Elect the four Class I Directors named in the Proxy Statement accompanying this notice to the Company's Board of Directors to serve until the Company's 2016 Annual Meeting of Stockholders and until the election and qualification of their respective successors.

The Board of Directors recommends that you vote FOR each of the director nominees.

2.

Ratify the selection of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending September 30, 2015.

The Board of Directors recommends that you vote FOR the ratification of the selection of Ernst & Young LLP.

3.

Vote on an advisory resolution on the Company's executive compensation.

The Board of Directors recommends that you vote FOR the advisory resolution.

We will also attend to any other business properly presented at the 2015 Annual Meeting and any adjournment or postponement thereof. The foregoing items of business are more fully described in the Proxy Statement that is attached to, and a part of, this notice.

Only common stockholders of record at the close of business on January 5, 2015, can vote at the 2015 Annual Meeting or any adjournment or postponement thereof.

By order of the Board of Directors,

Christina Ching
Vice President, Corporate Secretary

Los Angeles, California
January 23, 2015

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Whether or not you plan to attend the 2015 Annual Meeting in person, we request that you vote (a) by Internet, (b) by telephone or (c) by requesting a printed copy of the proxy materials and using the proxy card or voting instruction card enclosed therein as promptly as possible in order to ensure your representation at the 2015 Annual Meeting.

You may revoke your proxy at any time before it is exercised by giving our Corporate Secretary written notice of revocation or submitting a later dated proxy by Internet, telephone or mail, or by attending the 2015 Annual Meeting and voting in person.

Please note, however, that if your shares are held of record by a broker, bank or other nominee and you wish to vote at the 2015 Annual Meeting, you must obtain from the record holder a proxy issued in your name.

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AECOM
1999 AVENUE OF THE STARS, SUITE 2600
LOS ANGELES, CALIFORNIA 90067

PROXY STATEMENT
ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD
MARCH 4, 2015

INTRODUCTION

This Proxy Statement is furnished in connection with the solicitation on behalf of the Board of Directors of AECOM, a Delaware corporation ("we," "our," the "Company" or "AECOM"), of proxies for use at our 2015 Annual Meeting of Stockholders ("2015 Annual Meeting") to be held on March 4, 2015, at 8:00 a.m. local time, or at any adjournment or postponement thereof. At the 2015 Annual Meeting, you will be asked to consider and vote on the matters described in this Proxy Statement and in the accompanying notice. The 2015 Annual Meeting will be held at The Hyatt Regency Century Plaza, 2025 Avenue of the Stars, Los Angeles, California 90067. Only common stockholders of record at the close of business on January 5, 2015, which is the record date for the 2015 Annual Meeting, are permitted to vote at the 2015 Annual Meeting and any adjournment or postponement thereof.

The Company's Board of Directors (the "Board of Directors" or "Board") is soliciting your vote to:

•

Elect the four Class I Directors named in this Proxy Statement to the Company's Board of Directors to serve until the Company's 2016 Annual Meeting of Stockholders and until the election and qualification of their respective successors;



•

Ratify the selection of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending September 30, 2015; and



•

Approve an advisory resolution on the Company's executive compensation.

We are pleased to again take advantage of the Securities and Exchange Commission rule allowing companies to furnish proxy materials to their stockholders over the Internet. We believe that this e-proxy process expedites stockholders' receipt of proxy materials, while also lowering the costs and reducing the environmental impact of our annual meeting. On January 23, 2015, we began mailing a Notice of Internet Availability of Proxy Materials (the "Notice") to all stockholders of record as of January 5, 2015, and posted our proxy materials on the Web site referenced in the Notice. As more fully described in the Notice, all stockholders may choose to access our proxy materials on the Web site referred to in the Notice or may request to receive a printed set of our proxy materials. In addition, the Notice and Web site provide information regarding how you may request to receive proxy materials in printed form by mail or electronically by e-mail on an ongoing basis.

The Proxy Statement and our Annual Report on Form 10-K are available at investors.aecom.com.

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INFORMATION REGARDING VOTING AT THE
2015 ANNUAL MEETING

You may vote your shares in person at the 2015 Annual Meeting or by proxy if you are a record holder. There are three ways to vote by proxy: (1) by Internet by following the instructions on the Notice or proxy card, (2) by telephone by calling 1-800-652-8683 and following the instructions on the Notice or proxy card, or (3) by requesting a printed copy of the proxy materials and signing, dating and mailing the enclosed proxy card to our Corporate Secretary at the address below. If your shares are held in the name of a bank, broker or other holder of record, you will receive instructions from the holder of record. You must follow the instructions of the holder of record in order for your shares to be voted. Internet and telephone voting also will be offered to stockholders owning shares through certain banks and brokers.

You may revoke your proxy at any time before it is exercised at the 2015 Annual Meeting by (1) giving our Corporate Secretary written notice of revocation, (2) delivering to us a signed proxy card with a later date, (3) granting a subsequent proxy through the Internet or telephone, or (4) by attending the 2015 Annual Meeting and voting in person. Written notices of revocation and other communications with respect to the revocation of proxies should be addressed to AECOM, 1999 Avenue of the Stars, Suite 2600, Los Angeles, CA 90067, Attention: Corporate Secretary.

All shares represented by valid proxies received and not revoked before they are exercised will be voted in the manner specified in the proxy. Other than with respect to certain trustees who hold our shares in trust, if you submit proxy voting instructions but do not direct how to vote on each item, the persons named as proxies will vote in favor of each of the proposals. Our Board of Directors is unaware of any matters other than those described in this Proxy Statement that may be presented for action at our 2015 Annual Meeting. If other matters do properly come before our 2015 Annual Meeting, however, it is intended that shares represented by proxies will be voted in the discretion of the proxy holders.

If you are a beneficial owner and hold your shares in the name of a bank, broker or other holder of record and do not return the voting instruction card, the broker or other nominee may vote your shares on each matter at the 2015 Annual Meeting for which he or she has the requisite discretionary authority. Under applicable rules, brokers have the discretion to vote on routine matters, which include the ratification of the selection of the independent registered public accounting firm. Brokers will not have the discretion to vote on any of the other proposals presented at the 2015 Annual Meeting.

We will pay the entire cost of soliciting proxies. In addition to soliciting proxies by mail and by Internet we will request banks, brokers and other record holders to send proxies and proxy materials to the beneficial owners of our common stock and to secure their voting instructions, if necessary. We will reimburse record holders for their reasonable expenses in performing these tasks. In addition, we have retained Georgeson, Inc., to act as a proxy solicitor in conjunction with the 2015 Annual Meeting. We have agreed to pay Georgeson, Inc., a fee of $8,500, plus reasonable expenses, costs and disbursements for proxy solicitation services. If necessary, we may use our regular employees, who will not be specially compensated, to solicit proxies from stockholders, whether personally or by telephone, letter or other means.

Our Board of Directors has fixed January 5, 2015, as the record date for determining the stockholders who are entitled to notice of, and to vote at, our 2015 Annual Meeting. Only common stockholders of record at the close of business on the record date will receive notice of, and be able to vote at, our 2015 Annual Meeting. As of the

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record date, there were 157,572,299 shares of our common stock outstanding held by 2,519 record holders, in addition to approximately 39,005 holders who do not hold shares in their own names. A majority of the stock issued and outstanding and entitled to vote must be present at our 2015 Annual Meeting, either in person or by proxy, in order for there to be a quorum at the meeting. Each share of our outstanding common stock entitles its holder to one vote. Shares of our common stock with respect to which the holders are present in person at our 2015 Annual Meeting but not voting, and shares for which we have received proxies but with respect to which holders of the shares have abstained, will be counted as present at our 2015 Annual Meeting for the purpose of determining whether or not a quorum exists. "Broker non-votes" will also be counted as present for the purpose of determining whether a quorum exists. Broker non-votes are shares of common stock held by brokers or nominees over which the broker or nominee lacks discretionary power to vote and for which the broker or nominee has not received specific voting instructions from the beneficial owner.

Directors are elected by a plurality. Therefore, the four nominees who receive the most votes will be elected. Abstentions and broker non-votes will not be counted as participating in the voting for the election of directors, and will therefore have no effect for purposes of such proposal. The ratification of our independent registered public accounting firm and the advisory resolution on the Company's executive compensation require the affirmative vote of the holders of a majority of the shares of common stock present in person or represented by proxy and entitled to vote at the 2015 Annual Meeting in order to be approved by our stockholders. In each case, abstentions will be counted as present and will have the effect of a vote against the proposal. Broker non-votes will not be counted as participating in the voting on the advisory resolution on the Company's executive compensation, and will therefore have no effect on the outcome of the vote on that proposal. Brokers have discretion to vote on the ratification of our independent registered public accounting firm and, as such, no votes on this proposal will be considered broker non-votes.

Our Board of Directors urges you to vote promptly by either electronically submitting a proxy or voting instruction card over the Internet, by telephone or by delivering to us or your broker, as applicable, a signed and dated proxy card.

Votes will be tabulated by the inspector of election appointed for the 2015 Annual Meeting, who will separately tabulate affirmative and negative votes, abstentions and broker non-votes. A representative of Computershare Trust Company, N.A., our transfer agent, will tabulate the votes and act as the inspector of election.

We report our results of operations based on 52- or 53-week periods ending on the Friday nearest September 30. For clarity of presentation, all periods are presented as if the fiscal year ended on September 30. Fiscal years 2014, 2013 and 2012 contained 53, 52 and 52 weeks, respectively, and ended on October 3, September 27 and September 28, respectively.

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PROPOSAL 1
ELECTION OF CLASS I DIRECTORS

Our Board of Directors has 13 members currently divided into three classes. Each director elected prior to the 2015 Annual Meeting was elected to a three year term and will continue in office until a successor has been elected and qualified, subject to the director's earlier resignation, retirement or removal from office. The current three year term of office of our Class I directors will end at the 2015 Annual Meeting. As a result of an amendment to the Company's Certificate of Incorporation to declassify the Board of Directors approved at the 2014 Annual Meeting of Stockholders, the Class I directors elected at the 2015 Annual Meeting will be elected for a one year term ending at the 2016 Annual Meeting of Stockholders. Further, in accordance with this amendment, beginning with the election of directors at the 2015 Annual Meeting, the Board will be divided into only two classes of directors (as opposed to three): Class I and Class II. Class I, whose term will expire at our 2016 Annual Meeting of Stockholders, will be comprised of the directors elected at the 2015 Annual Meeting and the directors currently in Class II. Class II, whose term will expire at our 2017 Annual Meeting of Stockholders, will be comprised of the directors currently in Class III. At the 2016 Annual Meeting of Stockholders, all members of Class I will stand for election for a one year term ending at the 2017 Annual Meeting of Stockholders. Beginning with the election of directors at our 2016 Annual Meeting of Stockholders, there will be a single class of directors, Class I (which will now also include our current Class III directors), with all directors having a term that expires at the 2017 Annual Meeting of Stockholders. Therefore, beginning with the 2017 Annual Meeting of Stockholders, the Board shall cease to be classified and all directors will be elected on an annual basis. The table under "Director Qualifications" below lists the directors and their classes.

In accordance with our director retirement policy, Mr. Richard G. Newman, a current Class I director, will not stand for re-election and will retire effective upon the election of the Class I directors at the 2015 Annual Meeting. Following such election, our Board of Directors will be comprised of 12 directors. The Company is most grateful to Mr. Newman for his valuable service to the Company for more than two decades.

Four Class I Directors will be elected at the 2015 Annual Meeting to serve until the 2016 Annual Meeting of Stockholders, and until their successors are duly elected and qualified. If a quorum is present at our 2015 Annual Meeting, the four nominees receiving the greatest number of votes will be elected.

Shares represented by proxies will be voted, if authority to do so is not withheld, for the election of the four nominees. Each of the nominees has consented to serve as a director, if elected, and management has no reason to believe that any nominee will be unable or unwilling to serve if elected as a director. In the event that any nominee is unavailable for re-election as a result of an unexpected occurrence, shares will be voted for the election of such substitute nominee as our Board of Directors may propose. Pursuant to the vote and immediately following the 2015 Annual Meeting, our Board of Directors will be composed of eight Class I Directors, and four Class II Directors.

The Board of Directors believes that the Board, as a whole, should possess a combination of skills, professional experience and diversity of backgrounds necessary to oversee the Company's business. The Nominating and Governance Committee is responsible for developing and recommending Board membership criteria to the full Board for approval. The criteria, which are set forth in the Company's Corporate Governance Guidelines, include the highest professional and personal ethics and values, commitment to enhancing stockholder value with sufficient time to carry out his or her duties, and business acumen. In considering director candidates, the Nominating and Governance Committee looks for business experience and skills, judgment, integrity, an understanding of such areas as finance, marketing, regulation and public policy, and the absence of potential conflicts with the Company's interests. While the Nominating and Governance Committee does not have a formal policy with respect to diversity, the Nominating and Governance Committee believes that it is essential that Board members represent diverse viewpoints and backgrounds.

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The Nominating and Governance Committee periodically reviews the appropriate skills and characteristics required of Board members in the context of the current composition of the Board, the operating requirements of the Company and the long-term interests of the Company's stockholders. In conducting this assessment, the Nominating and Governance Committee considers diversity, skills, and such other factors as it deems appropriate to maintain a balance of knowledge, experience and capability. This periodic assessment enables the Board to update the skills and experience it seeks in the Board as a whole, and in individual directors, as the Company's needs evolve and change over time, and to assess effectiveness of efforts at pursuing diversity. In identifying director candidates from time to time, the Nominating and Governance Committee may establish specific skills and experience that it believes the Company should seek in order to constitute a balanced and effective board.

The following list sets forth our four director nominees, as well as each of our eight continuing directors.

Nominees for Class I Directors Whose Terms Expire 2016
James H. Fordyce
Linda Griego
William G. Ouchi
Douglas W. Stotlar

Continuing Directors:

Current Class II Directors Whose Terms Expire 2016*
John M. Dionisio
William P. Rutledge
Daniel R. Tishman
William H. Frist

Current Class III Directors Whose Terms Expire 2017**
Michael S. Burke
David W. Joos
Robert J. Routs
Clarence T. Schmitz

*To become Class I Directors following the 2015 Annual Meeting

**To become Class II Directors following the 2015 Annual Meeting

The following section sets forth certain background information of the nominees for election as directors and the current members of our Board of Directors who will continue serving following the 2015 Annual Meeting, as well as each individual's specific experience, qualifications and skills that led our Board of Directors to conclude that each such nominee/director should serve on our Board of Directors.

James H. Fordyce, 55, was appointed to our Board of Directors in February 2006. Mr. Fordyce is the Co-Founder and Co-CEO of Stone Canyon Industries, LLC, a diversified investment company founded in 2014. He was a Managing Director of J.H. Whitney Capital Partners, LLC, a private investment firm from 1996 to 2014. Mr. Fordyce began his career at Chemical Bank in 1981 and later joined Heller Financial, Inc. He also sits on several private company boards and is a member of the Board of Trustees of Saint John's Health Center.

Mr. Fordyce brings to our Board of Directors significant financial and investment experience as a result of his position at J.H. Whitney Capital Partners, LLC, where he oversaw significant debt and equity investments for the firm. In addition, he brings experience from his current and prior service on private and public company boards.

Linda Griego, 67, was appointed to our Board of Directors in May 2005. Ms. Griego has served as President and Chief Executive Officer of Griego Enterprises, Inc., a business management company, since 1985. She was the founder and Managing General Partner of Engine Co. No. 28, a restaurant in downtown Los Angeles, from 1988 until 2010. She also served as Interim President and Chief Executive Officer of the Los Angeles Community Development Bank and was Deputy Mayor of Los Angeles. She is currently a Director of CBS Corporation and American Balanced Fund, the Income Fund of America and International Growth and Income

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Fund, which are managed by Capital Group. Ms. Griego is a Chair of the Martin Luther King Hospital Foundation and serves as a trustee of the David and Lucile Packard Foundation. She previously chaired the Board of Southwest Water Company and also served as a Los Angeles Branch Director of the Federal Reserve Bank of San Francisco.

Ms. Griego brings executive management experience and expertise in government relations and public policy through her government appointments and service on not-for-profit boards. Her service on the boards of a number of large companies, including her prior service as the independent Chair of Southwest Water Company, provides our Board of Directors with insight regarding corporate governance matters, which is a key area of focus in today's corporate environment.

William G. Ouchi, 71, joined our Board of Directors in May 2003. Dr. Ouchi is the Sanford and Betty Sigoloff Distinguished Professor in Corporate Renewal at the Anderson School of Management at the University of California, Los Angeles (UCLA). He has been on the faculty of UCLA since 1979. Dr. Ouchi is a director of Sempra Energy Company and the Conrad N. Hilton Foundation. Dr. Ouchi has also been Vice Dean for Executive Education at UCLA and Chief of Staff for the Mayor of Los Angeles. Dr. Ouchi also serves on the boards of various charitable organizations.

Dr. Ouchi brings to our Board of Directors significant experience gained as a consultant and professor at the Anderson School of Management at UCLA, including in the areas of corporate governance and organizational performance. He also has extensive leadership experience and an understanding of corporate governance from his membership on other public company boards and charitable organizations, and from his role as a former chief of staff for the Mayor of Los Angeles.

Douglas W. Stotlar, 54, was appointed to our Board of Directors in October 2014 in connection with AECOM's acquisition of URS Corporation. He previously served as a director of URS Corporation from March 2007 until AECOM's acquisition of URS in October 2014. Mr. Stotlar has served as President, Chief Executive Officer and Director of Con-way Inc., a transportation and logistics company (previously known as CNF Inc.) since April 2005. He served as President and Chief Executive Officer of Con-way Transportation Services, Inc., a regional trucking subsidiary (CTS), from 2004 until 2005. Mr. Stotlar also served as CTS' Executive Vice President and Chief Operating Officer from 2002 until 2004, and as CTS' Executive Vice President of Operations from 1997 until 2002. He serves as Vice President at large and is a member of the executive committee of the American Trucking Associations. Mr. Stotlar is also a member of the Board of Directors of the American Transportation Research Institute and a Detroit Branch director of the Federal Reserve Bank of Chicago. He also serves on the boards of several not-for-profit organizations.

Mr. Stotlar brings to our Board of Directors a substantial knowledge of the transportation and logistics sector, which are relevant to our business activities. In addition, as a currently serving Chief Executive Officer of a public company, Mr. Stotlar contributes valuable experience with corporate governance practices, labor and stockholder relations matters, and current legal and regulatory requirements and trends.

John M. Dionisio, 66, was appointed Executive Chairman of the Board in March 2014. As discussed in more detail below in the section entitled "Corporate Governance — Board Leadership Structure," effective as of the 2015 Annual Meeting, Mr. Burke will succeed Mr. Dionisio as Chairman of the Board. Mr. Dionisio previously served as Chairman of the Board from October 2011 to March 2014 and Chief Executive Officer of the Company from October 2005 to March 2014. Mr. Dionisio also previously served as President of the Company from October 2005 to September 2011, and was elected to our Board of Directors in December 2005. From October 2003 to October 2005, Mr. Dionisio served as Executive Vice President and Chief Operating Officer of the Company. From October 2000 to October 2003, Mr. Dionisio served as President and Chief Executive Officer of our legacy subsidiary DMJM+Harris operation. Mr. Dionisio joined Frederic R. Harris, Inc., predecessor company to DMJM+Harris, in 1971, where he served in a number of capacities, including Chief Executive Officer from October 1999 to October 2003, President from July 1996 to October 1999, Executive Vice President in charge of U.S. operations from 1993 to 1996, and Manager of the New York Operations and Northern Region Manager from 1992 to 1993. Mr. Dionisio is also a director of Corinthian Colleges, Inc.

Mr. Dionisio brings a deep understanding of the Company's business, industry, operations and strategic planning to our Board of Directors from his more than 40 years of experience with the Company and from his role as Chief Executive Officer. Having Mr. Dionisio serve on our Board of Directors also provides an open channel of communication between our Board of Directors and senior management.

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William P. Rutledge, 72, was appointed to our Board of Directors in November 1998. Mr. Rutledge currently serves as Chief Executive Officer of Aquanano, LLC, a company specializing in the commercialization of water purification technology. Mr. Rutledge was Chairman of CPI International, Inc., formerly Communications and Power Industries, a communications company, from 1999 to 2004. Previously, he was Chairman, President and Chief Executive Officer of Teledyne, Inc., a diversified manufacturing company, from 1993 to August 1996. Mr. Rutledge also serves on the Board of Directors of Sempra Energy Corporation and the board of trustees of St. John's Health Center Foundation and the National World War II Museum.

Mr. Rutledge brings strong leadership, knowledge and experience of strategic and financial matters to our Board of Directors from his tenure at Allegheny Teledyne, Inc., and his service as Chief Executive Officer of Aquanano, LLC. He also brings to our Board of Directors important knowledge of public company governance through his service on multiple public company boards.

Daniel R. Tishman, 59, was appointed to our Board of Directors and as Vice Chairman of the Company in July 2010 in connection with our acquisition of Tishman Construction Corporation. He has also served as Chairman of the Board of Directors and Chief Executive Officer of Tishman Construction, a leading construction management firm, since 2000. He is also Vice Chairman and a member of the Board of Tishman Hotel & Realty LP. Mr. Tishman serves on the boards of the Real Estate Board of New York, the Natural Resources Defense Council, the Albert Einstein College of Medicine, the National September 11 Memorial & Museum and the UJA-Federation of NY. He also serves as an adviser to several government organizations.

Mr. Tishman provides strong knowledge, management and operational experience in the construction management industry and in particular large scale development projects such as the rebuilding of the World Trade Center site in New York City to our Board of Directors.

William H. Frist, 62, was appointed to our Board of Directors in October 2014 in connection with AECOM's acquisition of URS Corporation. He previously served as a director of URS Corporation from November 2009 until AECOM's acquisition of URS in October 2014. Senator Frist has served as a partner at Cressey & Company LP, a private investment firm since 2007. He also served as Distinguished University Professor at Vanderbilt University from 2008 until 2010. Senator Frist was a United States Senator for Tennessee from 1995 until 2007 and was Majority Leader of the United States Senate from 2003 until 2007. He has served as a director of Select Medical Corporation since May 2010. Senator Frist serves on the boards of several other organizations, including the Center for Strategic and International Studies, the Kaiser Family Foundation, the Robert Wood Johnson Foundation, Aegis Laboratories, Accolade LLC and the Harvard Medical School Board of Fellows.

Senator Frist's experience as a legislator, including as former Majority Leader of the United States Senate, gives him the leadership and consensus-building skills to assist our Board of Directors in a range of its activities. He has extensive knowledge of the workings of government and, as a former member of the Senate Finance Committee, of the federal budgeting process, which is beneficial given that a portion of our business activities are regulated and directly affected by governmental actions.

Michael S. Burke, 51, was appointed Chief Executive Officer of the Company and elected to the Board of Directors in March 2014. As discussed in more detail below in the section entitled "Corporate Governance — Board Leadership Structure," effective as of the 2015 Annual Meeting, Mr. Burke will also assume the role of Chairman of the Board. Mr. Burke previously served as President of the Company from October 2011 to March 2014, Executive Vice President, Chief Financial Officer from December 2006 to September 2011. He also served as Executive Vice President, Chief Corporate Officer from May 2006 to January 2009. Mr. Burke joined AECOM as Senior Vice President, Corporate Strategy, in October 2005. From 1990 to 2005, Mr. Burke was with the accounting firm KPMG LLP. He served in various senior leadership positions, including as a Western Area Managing Partner from 2002 to 2005 and a member of KPMG's Board of Directors from 2000 through 2005. While on the KPMG Board of Directors, Mr. Burke served as the Chairman of the Board Process and Governance Committee and a member of the Audit and Finance Committee. Mr. Burke serves on the Board of Directors of Rentech, Inc., and is the Chairman of its Audit Committee. Additionally, he serves on the Board of Directors of Rentech Nitrogen Partners, L.P., and as the Chairman of its Audit Committee. Mr. Burke also serves on various charitable and community boards.

Mr. Burke brings to our Board of Directors a thorough understanding of the Company's business, industry and operations based on his senior positions, including Chief Executive Officer, with the Company. In addition,

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Mr. Burke brings extensive accounting, financial and business experience as a result of his tenure and senior positions at the accounting firm KPMG LLP.

David W. Joos, 61, was appointed to our Board of Directors in March 2012. Mr. Joos currently serves as Chairman of the Boards of CMS Energy and Consumers Energy Corporations, both New York Stock Exchange-listed companies. Consumers Energy is an electric and gas utility in Michigan and is the principal subsidiary of CMS Energy. Previously, he served from 2004 to 2010 as President and Chief Executive Officer of CMS Energy and as Chief Executive Officer of Consumers Energy Company; from 2001 to 2004 as President and Chief Operating Officer of CMS Energy and Consumers Energy; from 2000 to 2001 as Executive Vice President and Chief Operating Officer — Electric of CMS Energy; and from 1997 to 2000 as President and Chief Executive Officer of Consumers Energy. He is a director of Steelcase, Inc., a global provider of workplace products, furnishings and services, where he serves on the Compensation Committee and the Audit Committee, and has been a director of CMS Energy and of Consumers Energy since 2001.

Mr. Joos brings to our Board of Directors his extensive knowledge and practical experience in engineering, operations and maintenance of power plants and utility systems. Through his management of a regulated utility, he has developed a solid foundation in governmental affairs, corporate governance, human resources and environmental expertise which benefit the Board. He has also worked extensively in the nuclear power industry.

Robert J. Routs, 68, was appointed to our Board of Directors in December 2010. From 2004 until his retirement in 2008, Dr. Routs served as Executive Director, U.S. downstream operations, of Royal Dutch Shell plc, part of a global group of energy and petrochemical companies, and as Chairman of Shell Canada. Prior to that time, he served as Group Managing Director for oil products and refining from 2003 to 2004; President and Chief Executive, Shell Oil Products U.S., from 2002 to 2003; and President and Chief Executive, Equilon Enterprises LLC, a Shell-Texaco joint venture, from 2000 to 2002. Dr. Routs began his career at Royal Dutch Shell in 1971, serving in regional manufacturing and global general manager positions throughout his tenure. He also serves on the Board of Directors of AEGON N.V., AP Moller Maersk, ATCO Ltd. and Royal DSM N.V., and served on the Board of Directors of Royal KPN until 2014.

Dr. Routs was appointed to our Board for his global energy sector leadership as well as his operating and board experience. These qualifications provide our Board of Directors with valuable international business experience and knowledge, which is particularly relevant in light of the global scope of the Company's operations.

Clarence T. Schmitz, 66, was named to our Board of Directors in June 2014. He served as Chairman, Co-founder and Chief Executive Officer of Outsource Partners International, Inc. until his retirement in June 2011. He was previously Executive Vice President and Chief Financial Officer of Jefferies Group, Inc. from January 1995 to January 2000. He held a number of leadership positions at KPMG from June 1970 to January 1995, including National Managing Partner and serving on its Board of Directors and Management Committee. Mr. Schmitz has served as Chairman of the Board of Trustees of the CureSearch National Childhood Cancer Foundation and on the Board of Trustees of The City of Hope.

Mr. Schmitz brings to our Board of Directors an extensive career in the professional services industry that spans four decades, with significant global experience as an executive and board member.

The vote of a plurality of the shares present in person or represented by proxy and entitled to vote at the 2015 Annual Meeting is required to elect the nominees to the Board of Directors. This means that the four individuals nominated for election to the Board of Directors who receive the most "FOR" votes (among votes properly cast in person or by proxy) will be elected. Abstentions and broker non-votes are not counted for purposes of election of directors.

The Board of Directors recommends that you vote FOR the election of Messrs. Fordyce, Stotlar and Ouchi and Ms. Griego to the Board of Directors.

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PROPOSAL 2
RATIFICATION OF SELECTION OF INDEPENDENT
REGISTERED PUBLIC ACCOUNTING FIRM

The Audit Committee of our Board of Directors has retained Ernst & Young LLP to serve as our independent registered public accounting firm for the fiscal year ending September 30, 2015. A representative of Ernst & Young LLP is expected to be present at the 2015 Annual Meeting and will have an opportunity to make a statement if the representative so desires, and will be available to respond to appropriate questions.

Selection of our independent registered public accounting firm is not required to be submitted for stockholder approval, but the Audit Committee of our Board of Directors is seeking ratification of its selection of Ernst & Young LLP from our stockholders as a matter of good corporate practice. If stockholders do not ratify this selection, the Audit Committee of our Board of Directors will reconsider its selection of Ernst & Young LLP, and will, in its sole discretion, either continue to retain this firm or appoint a new independent registered public accounting firm. Even if the selection is ratified, the Audit Committee may, in its discretion, appoint a different independent registered public accounting firm at any time during the fiscal year if it determines that such a change would be in the Company's best interests and the best interests of our stockholders.

The affirmative vote of a majority of the shares present in person or represented by proxy and entitled to vote at the 2015 Annual Meeting is required to ratify the selection of Ernst & Young LLP, as our independent registered public accounting firm for the fiscal year ending September 30, 2015. Abstentions will be counted as a vote against the proposal.

The Board of Directors recommends that you vote FOR the ratification of Ernst & Young LLP.

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PROPOSAL 3
ADVISORY RESOLUTION ON
EXECUTIVE COMPENSATION

In accordance with Section 14A of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), which was added under the Dodd-Frank Wall Street Reform and Consumer Protection Act ("Dodd-Frank"), we are asking stockholders to approve an advisory resolution on the Company's executive compensation as reported in this Proxy Statement. Taking into consideration the voting results from the Company's 2011 Annual Meeting of Stockholders concerning the frequency of the stockholder advisory vote on executive compensation, the Company's Board of Directors has determined the Company shall hold an annual advisory vote on executive compensation until the next advisory vote on the frequency of such votes.

At AECOM, executive compensation plans are driven by short- and long-term financial performance metrics designed to ensure management is incentivized to increase stockholder value over time.

AECOM has strengthened its global market share leadership position in the end markets we serve, while delivering profitability and cash flow. These achievements have been supported by strong relationships with clients, talented employees and an effective leadership team. Through a combination of operational and financial initiatives, AECOM has a balanced approach to capital allocation with the goal of optimizing long-term returns. Financially, AECOM is committed to improved returns over time, driven by profitable growth and enhanced cash conversion, which provide additional opportunities for deploying capital in value-enhancing ways.

In fiscal year 2014, the Company again effectively navigated an uneven global macro-economic environment and delivered on its commitment to deliver cash flow and prudently allocate capital with the announcement of the combination with URS Corporation, which was approved by our stockholders and consummated in early fiscal year 2015. The combination resulted in the Company having further expanded its capabilities and diversified the business into higher growth markets — such as increased private sector clients in industrial and energy — further strengthening AECOM's leading competitive position and integrated delivery model.

AECOM is focused on continuing to integrate URS Corporation into the combined company; strengthening its presence in large, fast-growing markets; improving project delivery; enhancing the client experience; and leveraging the Company's integrated delivery model. As a result, we believe the Company's geographic footprint, services portfolio and end market exposure are well aligned with global growth opportunities.

We urge stockholders to read the "Compensation Discussion and Analysis," beginning on page 22 of this Proxy Statement, which describes in more detail how our executive compensation policies and procedures operate and are designed to achieve our compensation objectives, as well as the Summary Compensation Table and related compensation tables and narrative, which provide detailed information on the compensation of our Named Executive Officers. The Compensation/Organization Committee and the Board of Directors believe that the policies, procedures and programs articulated in the Compensation Discussion and Analysis are effective in achieving our goals and that the compensation of our Named Executive Officers reported in this Proxy Statement has supported and contributed to the Company's success.

We are asking stockholders to approve the following advisory resolution at the 2015 Annual Meeting:

RESOLVED, that the stockholders of AECOM (the "Company") approve, on an advisory basis, the compensation of the Company's Named Executive Officers set forth in the Compensation Discussion and Analysis, the Summary Compensation Table and the related compensation tables and narrative in the Proxy Statement for the Company's 2015 Annual Meeting of Stockholders.

This advisory resolution, commonly referred to as a "say-on-pay" resolution, is non-binding on the Board of Directors. Although non-binding, the Board and the Compensation/Organization Committee will carefully review and consider the voting results when evaluating our executive compensation program.

Vote Required and Recommendation of the Board of Directors

The affirmative vote of a majority of the shares present in person or represented by proxy and entitled to vote at the 2015 Annual Meeting is required to approve the advisory resolution on the Company's executive compensation. Abstentions will be counted as a vote against the resolution, whereas broker non-votes will have no effect on the vote.

The Board of Directors recommends that you vote FOR the advisory resolution on executive compensation.

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CORPORATE GOVERNANCE

During our fiscal year ended September 30, 2014, our Board of Directors met eight times, the Audit Committee met five times, the Compensation/Organization Committee met six times, the Nominating and Governance Committee (formerly the Nominating, Governance and Risk Committee) met three times, the Strategy, Risk and Safety Committee (formerly the Planning, Finance and Investment Committee) met six times and the Transition Committee met four times (the Transition Committee was a temporary ad hoc committee appointed to assist in the leadership transition involving our Executive Chairman and Chief Executive Officer and was dissolved on June 30, 2014). Each incumbent director attended at least 75% of the aggregate of (1) the total number of meetings of our Board of Directors and (2) the total number of meetings held by all committees of the Board of Directors on which he or she served during fiscal year 2014.

Currently, nine of the 13 members of our Board of Directors are independent directors as defined in accordance with the listing standards of the New York Stock Exchange. These standards provide that a director is independent only if our Board of Directors affirmatively determines that the director has no direct or indirect material relationship with the Company. They also specify various relationships that preclude a determination of director independence. Material relationships may include commercial, industrial, consulting, legal, accounting, charitable, family and other business, professional and personal relationships.

Applying these standards, our Board of Directors, upon the recommendation of our Nominating and Governance Committee, annually reviews the independence of our directors. In its most recent review, our Board of Directors considered, among other things, the absence of any employment relationships between the Company and our directors and their families; the absence of any of the other specific relationships that would preclude a determination of independence under the New York Stock Exchange independence rules; the absence of any affiliation of the Company's directors and their families with the Company's independent registered public accounting firm, compensation consultants, legal counsel and other consultants and advisors; the absence of any transactions with directors and members of their families that would require disclosure in this Proxy Statement under U.S. Securities and Exchange Commission rules regarding related person transactions; the insubstantial amount of goods and services that we purchase in the ordinary course of business from companies; and the modest amount of our contributions to non-profit organizations of which some of our directors or members of their families are associated.

Our Board of Directors has determined that the following members and nominees are independent as determined in reference to the standards of the New York Stock Exchange: Messrs. Fordyce, Frist, Joos, Ouchi, Routs, Rutledge, Schmitz and Stotlar, and Ms. Griego.

The Board has been, and continues to be, a proponent of Board independence. As a result, the Company's corporate governance structures and practices provide for a strong, independent Board and include several independent oversight mechanisms, including a lead independent director, only independent directors serving as committee chairpersons and the directors' and committees' ability to engage independent consultants and advisors.

The independent directors annually appoint a lead independent director. William G. Ouchi has served as the lead independent director since fiscal year 2013 and is continuing to serve in that role for fiscal year 2015.

The position and role of the lead independent director is intended to expand lines of communication between the Board and members of management. It is not intended to reduce the free and open access and

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communications that each independent board member has with other board members and members of management. The lead independent director has the following duties:

•

To organize, convene and preside over executive sessions of the non-employee and independent directors and promptly communicate approved messages and directives to the Chairman of the Board and the Chief Executive Officer.



•

To consult with the Chairman of the Board and the Chief Executive Officer on agendas for Board meetings and other matters pertinent to the Company and the Board.



•

To collect and communicate to the Chairman of the Board and the Chief Executive Officer the views and recommendations of the independent directors, relating to his or her performance.



•

To perform such other duties and responsibilities as may be assigned from time to time by the independent directors.

To complement this structure, the Board believes it is important to retain its flexibility to allocate the responsibilities of the offices of the Chairman of the Board and Chief Executive Officer in the best interests of the Company. The Board believes that the decision as to who should serve in those roles, and whether the offices should be combined or separate, should be assessed periodically by the Board, and that the Board should not be constrained by a rigid policy mandate when making these determinations. Additionally, the Board believes that it needs to retain the ability to balance the independent Board structure with the flexibility to appoint as Chairman of the Board someone with hands-on knowledge of, and experience in, the operations of the Company.

Effective as of the 2015 Annual Meeting, the Board has determined that the positions of Chairman of the Board and Chief Executive Officer will be held by Michael S. Burke. Mr. Burke has served as a key executive since 2005 where he gained unique insights into our business and the complex challenges we face including being directly involved in the transformation of AECOM from a private company with more than 20,000 employees into a public company with nearly 100,000 employees. The Board believes that he is uniquely positioned at this time to identify, lead and oversee the execution of our future strategic initiatives. The Board also believes that the established role of lead independent director, currently filled by Dr. Ouchi, will continue to help ensure the effective independent functioning of the Board in fulfilling its oversight role. Therefore, in light of Mr. Burke's past tenure and his unique knowledge of the long term goals of the Company, and because the lead independent director is empowered to play a significant role in the Board's oversight, we believe that it is advantageous to combine the positions of Chief Executive Officer and Chairman at this time.

The Board of Directors believes this governance structure and these practices enable strong and independent directors to effectively oversee the Company's management and key issues related to long-range business plans, long-range strategic issues, risks and integrity.

Executive sessions of non-employee directors are included on the agenda for every regularly scheduled Board of Directors meeting and, during fiscal year 2014, executive sessions were held at each regularly scheduled Board of Directors meeting. The executive sessions are chaired by the lead independent director.

The Board plays an active role, both as a whole and at the committee level, in overseeing management of the Company's risks. Management is responsible for the Company's day-to-day risk-management activities. The Company relies on a comprehensive risk-management process to aggregate, monitor, measure and manage risks. The risk-management process is designed to enable the Board of Directors to establish a mutual understanding with management of the effectiveness of the Company's risk-management practices and capabilities, to review the Company's risk exposure and to elevate certain key risks for discussion at the Board level. The Company's risk-management process is overseen by its Chief Risk Officer, who is a member of the Company's senior management.

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The Strategy, Risk and Safety Committee, in consultation with the Audit Committee and Nominating and Governance Committee, oversees the Company's overall policies regarding risk assessment and risk management. In addition, the Compensation/Organization Committee oversees risks relating to the Company's compensation policies and practices, as described below. The Audit Committee also oversees the Company's internal audit function. The full Board monitors risk through regular reports from each of the Committee chairs and is apprised of particular risk-management matters in connection with its general oversight and approval of corporate matters. We believe the division of risk-management responsibilities described above provides an effective framework for evaluating and addressing the risks facing the Company, and that our Board leadership structure supports this approach because it allows our independent directors, through the independent committee chairpersons, to exercise effective oversight of the actions of management.

In fiscal year 2014, the Compensation/Organization Committee's independent consultant, Exequity LLP, conducted a risk assessment of the Company's compensation policies and practices as they apply to all employees, including executive officers. The consultant reviewed the design features and performance metrics of our cash and stock-based incentive programs along with the approval mechanisms associated with each to determine whether any of these policies and practices could create risks that are reasonably likely to have a material adverse effect on the Company.

As part of the review, several factors were noted that reduce the likelihood of excessive risk-taking:

•

Our compensation mix is balanced among fixed components such as salary and benefits, annual incentive payments and long-term incentives, including Performance Earnings Program awards and Restricted Stock Units granted under our 2006 Stock Incentive Plan, which typically vest or are earned over three years.



•

Performance Earnings Program awards, which make up 60% of long-term incentives for our executives, balance both growth and profitability and are earned if thresholds are met in both earnings per share and free cash flow per share and vest over three years.



•

The Compensation/Organization Committee has ultimate authority to determine, and reduce if appropriate, compensation provided to our executive officers, including each of the Named Executive Officers.



•

The Compensation/Organization Committee, under its charter, has the authority to retain any advisor it deems necessary to fulfill its obligations and has engaged Exequity LLP as its independent consultant. Exequity performs services for the Compensation/Organization Committee as described in the Compensation Discussion and Analysis section of this Proxy Statement.



•

Our annual incentive programs for employees are funded in aggregate based on the results of certain financial metrics. Individual payouts are based on a combination of financial metrics as well as qualitative factors.



•

Our long-term incentive and stock-based awards, including Performance Earnings Program awards and Restricted Stock Units granted under our 2006 Stock Incentive Plan, are all approved by either the Compensation/Organization Committee for our executive officers or by our CEO for non-executive officers.



•

Our Named Executive Officers are subject to stock ownership guidelines and our insider trading policy.

Based on this assessment, the Company concluded that its compensation policies and practices do not create risks that are reasonably likely to have a material adverse effect on the Company.

The Board of Directors of the Company has four standing committees: the Audit Committee, the Compensation/Organization Committee, the Nominating and Governance Committee, and the Strategy, Risk and Safety

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Committee. In accordance with New York Stock Exchange regulations, each member of the Audit Committee, the Compensation/Organization Committee, and the Nominating and Governance Committee has been determined by our Board of Directors to be "independent." The committees operate under written charters that are available for viewing on the "Corporate Governance" area of the "Investors" section of our Web site at www.aecom.com.

The members of each of the Company's standing committees are as follows:

Audit Committee
William P. Rutledge, Chair
David W. Joos
Clarence T. Schmitz
Douglas W. Stotlar

Compensation/Organization Committee
James H. Fordyce, Chair
Linda Griego
William G. Ouchi
Robert J. Routs
William P. Rutledge
Clarence T. Schmitz

Nominating and Governance Committee
Linda Griego, Chair
William H. Frist
David W. Joos
William G. Ouchi

Strategy, Risk and Safety Committee
Robert J. Routs, Chair
James H. Fordyce
Richard G. Newman
Daniel R. Tishman

Audit Committee. The Audit Committee, which is composed solely of independent directors as defined under Rule 10A-3(b)(1) of the rules of the Securities and Exchange Commission and the regulations of the New York Stock Exchange, appoints the Company's independent auditors, reviews the results and scope of the audit of our financial statements as well as other services provided by our independent auditors, reviews and approves audit fees and all non-audit services as well as reviews and evaluates our audit and control functions, including our internal audit function. Our Audit Committee held five meetings during fiscal year 2014. Our Board of Directors has determined that Mr. Rutledge, Chairperson of the Audit Committee, and Mr. Joos and Mr. Schmitz each qualifies as an "audit committee financial expert" as defined by the rules under the Securities Exchange Act of 1934. The "Report of the Audit Committee" is included in this Proxy Statement.

Compensation/Organization Committee. The Compensation/Organization Committee, composed solely of independent directors, as defined under the regulations of the New York Stock Exchange, non-employee directors, as defined under Rule 16b-3 of the Exchange Act, and outside directors for purposes of Section 162(m) under the Internal Revenue Code, oversees our compensation plans. Such oversight includes decisions regarding executive management salaries, incentive compensation and long-term compensation plans as well as Company-wide equity plans for our employees. This committee also reviews the Board of Directors' compensation plan non-employee director for service on the Board of Directors and its committees, utilizing independent consultants, and oversees management succession planning. For further information regarding the Compensation/Organization Committee's processes and procedures for determining executive and non-employee director compensation, see the Compensation Discussion and Analysis section of this Proxy Statement. Our Compensation/Organization Committee held six meetings during fiscal year 2014. The "Report of the Compensation/Organization Committee of the Board of Directors" is included in this Proxy Statement.

Nominating and Governance Committee. The Nominating and Governance Committee is composed solely of independent directors, as defined under the regulations of the New York Stock Exchange, and is responsible for

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recruiting and retaining qualified persons to serve on our Board of Directors, including recommending such individuals to the Board of Directors for nomination for election as directors; for evaluating director independence; and for oversight of our ethics and compliance activities. The Nominating and Governance Committee also considers written suggestions from stockholders, including potential nominees for election, and oversees other governance programs such as the Company's Corporate Governance Guidelines. This committee also conducts performance evaluations for the class of directors being elected at each annual meeting of stockholders. Our Nominating and Governance Committee held three meetings during fiscal year 2014.

Strategy, Risk and Safety Committee. The Strategy, Risk and Safety Committee reviews our corporate finance programs, proposed investments and acquisitions, our strategic plans, strategic initiatives, and the Company's overall policies regarding risk assessment, risk management and safety programs. Our Strategy, Risk and Safety Committee held six meetings during fiscal year 2014.

Our Board of Directors has adopted corporate governance guidelines that set forth several important principles regarding our Board of Directors and its committees, including Board of Director membership criteria as well as other matters. Our corporate governance guidelines are available for viewing on the "Corporate Governance" area of the "Investors" section of our Web site at www.aecom.com.

We have adopted a Code of Conduct that describes the professional, legal, ethical, financial and social responsibilities of all of our directors, officers and employees. We require all of our directors, officers and employees to read and acknowledge the Code of Conduct, and we provide regular compliance training to all our directors, officers and employees. Our directors, officers and employees are also encouraged to report suspected violations of the Code of Conduct through various means, including a toll-free hotline, and they may do so anonymously. We also obtain year-end certifications from management personnel confirming compliance with the Code of Conduct. If we make substantive amendments to the Code of Conduct or grant any waiver, including any implicit waiver, to our principal executive, financial or accounting officer, or persons performing similar functions or any director, we will disclose the nature of such amendment or waiver in a press release, on our Web site and/or in a report on Form 8-K in accordance with applicable rules and regulations. We also have a Global Ethical Business Conduct Policy that provides specific guidance to ensure that lawful and ethical business practices are followed while conducting international business activities. Our Code of Conduct and Global Ethical Business Conduct Policy are available for viewing on the "Corporate Governance" area of the "Investors" section of our Web site at www.aecom.com and in print to any stockholder that requests it. Any such request should be addressed to AECOM, 1999 Avenue of the Stars, Suite 2600, Los Angeles, California 90067, Attention: Corporate Secretary.

Our stockholders or other interested parties may communicate with our Board of Directors, a committee of our Board of Directors or a director by sending a letter addressed to the Board of Directors, a committee or a director to AECOM, 1999 Avenue of the Stars, Suite 2600, Los Angeles, California 90067, Attention: Corporate Secretary. All communications will be compiled by our Corporate Secretary and forwarded to the Board of Directors, the committee or the director, as appropriate.

The Nominating and Governance Committee of our Board of Directors is charged with identifying, reviewing and recommending to the Board of Directors qualified individuals to become directors and regularly assessing the size and composition of the Board of Directors and recommending any changes to the Board of Directors.

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It is our belief that members of the Board of Directors should have the highest professional and personal ethics and values. The Board's Nominating and Governance Committee periodically reviews the appropriate skills and characteristics required of members of the Board of Directors in the context of the current composition of the Board of Directors, the operating requirements of the Company and the long-term interests of stockholders. We believe that the Board of Directors should be comprised of individuals who are committed to enhancing stockholder value with sufficient time to effectively carry out their duties. While all directors should possess business acumen, the Board of Directors endeavors to include an array of targeted skills and experience in its overall composition. Criteria that the Nominating and Governance Committee looks for in director candidates include business experience and skills, judgment, independence, integrity, an understanding of such areas as finance, marketing, regulation, end markets and public policy, and the absence of potential conflicts with the Company's interests. While the Nominating and Governance Committee does not have a formal policy with respect to diversity, the Nominating and Governance Committee believes that it is essential that Board members represent diverse viewpoints and backgrounds.

Our Nominating and Governance Committee will consider stockholder nominations for directors. The Nominating and Governance Committee evaluates any such nominees that are properly submitted using the same criteria it otherwise employs, as described above. Any recommendation submitted by a stockholder must include the same information concerning the potential candidate as is required when a stockholder wishes to nominate a candidate directly. In addition, any such recommendation must be received in the same time frame as is required by our Bylaws when a stockholder wishes to nominate a candidate directly. To be timely, the notice must be received not less than 90 nor more than 120 days prior to the date of the first anniversary of the preceding year's annual meeting of stockholders. However, in the event that the date of the annual meeting is advanced more than 30 days prior to such anniversary date or delayed more than 30 days after such anniversary date, notice by the stockholder to be timely must be received no more than 120 days prior to the date of the annual meeting and not less than the later of the close of business (a) 90 days prior to the date of the annual meeting and (b) the 10th day following the day on which public announcement of the date of such meeting was first made by the Company.

To be in proper form, the notice must, as to each person whom the stockholder proposes to nominate for election or re-election as a director, set forth all information concerning such person as would be required in a Proxy Statement soliciting proxies for the election of directors in a contested election pursuant to Section 14 of the Securities Exchange Act of 1934, as amended (including such person's signed written consent to being named in the Proxy Statement as a nominee and to serve as a director of the Company, if elected) and a description of all direct and indirect compensation and other material monetary agreements, arrangements and understandings during the past three years between or among such stockholder and beneficial owner, if any, on whose behalf the nomination is being made, and their respective affiliates and associates, or others acting in concert therewith, on the one hand, and each proposed nominee, and his or her respective affiliates and associates, or others acting in concert therewith, on the other hand. In addition, as to the stockholder giving the notice and the beneficial owner, if any, on whose behalf the nomination is being made, the notice must also state the name and address, as they appear on the Company's books, of such stockholder and such beneficial owner, the class and number of shares of the Company that are owned of record and beneficially by such stockholder and such beneficial owner, a description of any agreement, arrangement or understanding with respect to the nomination between such stockholder or beneficial owner and any other person, including, without limitation, any agreements that would be required to be disclosed pursuant to Item 5 or Item 6 of Schedule 13D (regardless of whether the requirement to file a Schedule 13D is applicable to the stockholder or beneficial owner) of the Exchange Act, and a description of any agreement, arrangement or understanding (including any derivative or short positions, profit interests, options, hedging transactions, and borrowed or loaned shares) that has been entered into as of the date of the stockholder's notice by, or on behalf of, such stockholder or beneficial owner, the effect or intent of which is to mitigate loss, manage risk or benefit from changes in the share price of any class of the Company's capital stock, or maintain, increase or decrease the voting power of the stockholder or beneficial owner with respect to shares of stock of the Company. Stockholders who wish to nominate candidates for director must do so pursuant to these procedures.

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AECOM's policy is for directors to attend our annual meetings of stockholders, unless there are extenuating circumstances. All of the then members of our Board of Directors attended the 2014 Annual Meeting of Stockholders.

Information regarding the compensation of our non-employee directors is discussed below in "Compensation of Executive Officers and Other Information — Directors' Compensation for Fiscal Year 2014."

Our Board of Directors has adopted a director retirement policy, which provides that, unless otherwise recommended by the Nominating and Governance Committee and approved by the Board of Directors, directors are expected to retire from the Board of Directors at the end of the term of service during which they turn 72 years of age. In accordance with our director retirement policy, Mr. Richard G. Newman, a current Class I director, will not stand for re-election at the 2015 Annual Meeting and will retire effective upon the election of the Class I directors at the 2015 Annual Meeting.

We have adopted a written related party transaction policy, which covers transactions in excess of $100,000 between us and our directors, executive officers, 5% or greater stockholders and parties related to the foregoing, such as immediate family members and entities they control. The policy requires that any such transaction be considered and approved by our Audit Committee. In reviewing such transactions, the policy requires the Audit Committee to consider all of the relevant facts and circumstances available to the Audit Committee, including (if applicable) but not limited to the benefits to the Company, the availability of other sources for comparable products or services, the terms of the transaction and the terms available to unrelated third parties or to employees generally.

Under the policy, if we should discover related party transactions that have not been approved, the Audit Committee will be notified and will determine the appropriate action, including ratification, rescission or amendment of the transaction.

Mr. Daniel Tishman, Vice Chairman of the Company and a member of our Board of Directors, owns a substantial equity interest in, and has certain management rights with respect to, Tishman Hotel & Realty, LP, a Delaware limited partnership ("THR"), which is party to a Shared Services Agreement ("Services Agreement" or "SSA"), dated July 14, 2010, with our wholly owned subsidiary, Tishman Construction Corporation ("TCC"). Pursuant to the Services Agreement, which was entered into in connection with our acquisition of TCC in July 2010, TCC provides THR and certain affiliates certain services, such as information technology support, in exchange for fees based on an annual budget. The initial term of the Services Agreement expires on July 14, 2015. In fiscal year 2014, TCC received approximately $369,000 in fees from THR pursuant to the Services Agreement. THR and TCC are also parties to an Occupancy Agreement, dated July 14, 2010, (the "Occupancy Agreement") pursuant to which THR pays to TCC a portion of the rent payable by TCC for its office space in a building located in New York, New York, in exchange for the right to use and occupy a portion of such space. THR may terminate the Occupancy Agreement at any time on 30-days' notice to TCC. In fiscal year ended 2014, TCC received approximately $1,561,000 in rent from THR pursuant to the Occupancy Agreement.

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Non-employee directors are subject to stock ownership guidelines, which are intended to align their interests with those of our stockholders. Under the guidelines, our non-employee directors must maintain ownership of AECOM stock at a multiple of five times the annual retainer. The minimum number of shares guideline is updated annually based on the current retainer ($90,000 since August 21, 2013) and the 12-month trailing average AECOM stock price. Shares owned directly or indirectly, deferred stock units, the value of vested but unexercised stock options and unvested Restricted Stock Units are counted toward the guidelines. Non-employee directors have until five years after becoming a director to comply with the guidelines. The following table outlines the ownership of our non-employee directors as of September 30, 2014.

All of our non-employee directors exceeded the stock ownership guidelines, with the exception of Messrs. Routs and Schmitz for whom compliance with the guidelines is not required until December 2015 and June 2019, respectively, the five-year anniversary when each became a director. (Messrs. Frist and Stotlar were appointed as directors after September 30, 2014, and do not appear in the table above. However, these directors will be required to comply with the guidelines by October 2019.)

Please see the Compensation Discussion and Analysis section for a discussion of the executive stock ownership guidelines applicable to our Named Executive Officers.

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EXECUTIVE OFFICERS

AECOM's executive officers are as follows:

The following section sets forth certain background information regarding those persons currently serving as executive officers of AECOM:

John M. Dionisio was appointed Executive Chairman of the Board in March 2014. As discussed in more detail above in the section entitled "Corporate Governance — Board Leadership Structure," effective as of the 2015 Annual Meeting, Mr. Burke will succeed Mr. Dionisio as Chairman of the Board. Mr. Dionisio previously served as Chief Executive Officer from October 2005 to March 2014. Mr. Dionisio also previously served as President from October 2005 to September 2011. Mr. Dionisio was elected to our Board of Directors in December 2005 and served as Chairman of the Board from October 2011 to March 2014. From October 2003 to October 2005, Mr. Dionisio served as our Executive Vice President and Chief Operating Officer. From October 2000 to October 2003, Mr. Dionisio served as President and Chief Executive Officer of our legacy DMJM+Harris operation. Mr. Dionisio joined Frederic R. Harris, Inc., predecessor company to DMJM+Harris, in 1971, where he served in a number of capacities, including Chief Executive Officer from October 1999 to October 2003, President from July 1996 to October 1999, Executive Vice President in charge of U.S. operations from 1993 to 1996, and Manager of the New York Operations and Northern Region Manager from 1992 to 1993. Mr. Dionisio is also a director of Corinthian Colleges, Inc.

Daniel R. Tishman was appointed to our Board of Directors and as Vice Chairman of the Company in July 2010 in connection with our acquisition of Tishman Construction Corporation. He has also served as Chairman of the Board of Directors and Chief Executive Officer of Tishman Construction, a leading construction management firm, since 2000. He is also Vice Chairman and a member of the Board of Tishman Hotel & Realty LP. Mr. Tishman serves on the boards of the Real Estate Board of New York, the Natural Resources Defense Council, the Albert Einstein College of Medicine, the National September 11 Memorial & Museum and the UJA-Federation of NY. He also serves as an adviser to several government organizations.

Michael S. Burke was appointed Chief Executive Officer of the Company and was elected to the Board of Directors in March 2014. As discussed in more detail above in the section entitled "Corporate Governance — Board Leadership Structure," effective as of the 2015 Annual Meeting, Mr. Burke will also assume the role of Chairman of the Board. He previously served as President of the Company from October 2011 to March 2014, Chief Financial Officer from December 2006 to September 2011 and Executive Vice President from May 2006 to September 2011. He also served as Chief Corporate Officer from May 2006 to January 2009. Mr. Burke

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joined AECOM as Senior Vice President, Corporate Strategy, in October 2005. From 1990 to 2005, Mr. Burke was with the accounting firm KPMG LLP. He served in various senior leadership positions, including as a Western Area Managing Partner from 2002 to 2005 and a member of KPMG's Board of Directors from 2000 through 2005. While on the KPMG Board of Directors, Mr. Burke served as the Chairman of the Board Process and Governance Committee and a member of the Audit and Finance Committee. Mr. Burke serves on the Board of Directors of Rentech, Inc., and is the Chairman of its Audit Committee. Additionally, he serves on the Board of Directors of Rentech Nitrogen Partners, L.P., and as the Chairman of its Audit Committee. Mr. Burke also serves on various charitable and community boards.

Stephen M. Kadenacy was appointed President in October 2014 and has served as Chief Financial Officer since October 2011. From May 2008 to September 2011, he served as Senior Vice President, Corporate Finance. Prior to joining AECOM, Mr. Kadenacy was with the accounting firm KPMG LLP in San Francisco, California, since 1996. During his tenure with the firm, Mr. Kadenacy held several leadership roles and served as the partner in charge of several businesses. Mr. Kadenacy previously served on the Board of Directors of ABM Industries Incorporated, where he also served on the Audit Committee.

Michael J. Donnelly was appointed Group President, End Markets, in October 2014. He previously served as Group Chief Executive, Global Support Services, from January 2012 to September 2014. He also served as President of AECOM Government Services from October 2010 to December 2011. Mr. Donnelly joined AECOM in 2008 as Government Services Senior Vice President of Business Development. Prior to joining AECOM, he spent 25 years within business development, holding senior management positions at Raytheon Technical Services Company, EG&G, Lear Siegler Services and URS.

Kevin A. Lynch was appointed Executive Vice President and Chief Strategy Officer of AECOM in May 2014. Prior to joining AECOM, Mr. Lynch served as National Managing Director for the Technology, Media and Telecommunications Industry Practice at Deloitte from April 2012 to May 2014, where he joined and was admitted to partnership in 2002. In his time as a Senior Partner at Deloitte, he was a member of Deloitte's Consulting Executive Committee from March of 2012 to May of 2014, built and led the Strategy practice from April of 2009 to March of 2012, was an Advisory Board Member for its Japanese member firm in 2013, and held many additional senior operating roles during his tenure. Mr. Lynch is a Trustee and Chair of the Strategic Planning Committee at Proctor Academy, a private boarding school in New Hampshire.

Joseph Masters was appointed General Counsel and Chief Ethics and Compliance Officer of AECOM in October 2014. Previously, Mr. Masters served as General Counsel of URS since 1997 and was appointed Corporate Secretary in 2006. After joining URS in 1992 he held various senior leadership positions in the legal department. He also served as a member of the URS Management Committee and Risk Management Committee. Prior to 1992, he was in a private law practice.

Daniel P. McQuade was appointed Group President of AECOM's global Building Construction group in October 2014. He previously served as Chief Executive of the Company's legacy construction services practice from May 2012 to October 2014. From July 2010 to May 2012, he was Chief Operating Officer of the firm's construction services practice for the United States. Prior to joining AECOM in July 2010 as part of the Tishman Construction acquisition, he served as President of Tishman from October 2005 to June 2010. Mr. McQuade is a member of the Cornell University Civil Engineering School's Advisory Board and has professional affiliations with the Construction Industry Round Table and the Construction Management Association of America.

George L. Nash was appointed Group President, Energy, Infrastructure and Industrial Construction, of AECOM in October 2014. Previously, Mr. Nash served as President of URS' Energy & Construction business since January 2014. After joining an affiliate of URS in 1999 he held various leadership positions, including Chief Operating Officer, Energy & Construction; General Manager, Power Group; and Executive Vice President of Business Development, Power Group. He also served as a member of the URS Management Committee, Risk Management Committee and Retirement Plans Committee. Prior to 1999, he was the Director of Business Development for Stone & Webster for its power business.

Frederick W. Werner was appointed Group President, Design and Consulting Services, in October 2014. He previously served as President, EMEA (Europe, Middle East and Africa) since October 2012. Prior to that time, Mr. Werner served as President, Corporate Development, since October 2011 and Executive Vice President, Business Lines, from January 2009 to September 2011. He also served as Group Chief Executive of our U.S. Group from January 2008 to January 2009. He served as Group Chief Executive of our U.S. Infrastructure

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Group from 2005 to 2008. Prior to that time, Mr. Werner served as President and Chief Operating Officer of AECOM's legacy DMJM+Harris operation from 2003 to 2005. He began his DMJM+Harris career in the Geotechnical Division in 1977, progressing to Vice President and Manager of New Jersey Operations, Senior Vice President and Manager of New York Operations and, finally, to Chief Operating Officer before becoming President.

Randall A. Wotring was appointed Group President, Management Services, of AECOM in October 2014. Previously, Mr. Wotring served as President of URS' Federal Services business since November 2004. After joining an affiliate of URS in 1981 he held various leadership positions, including managing the day-to-day operations of the Engineering and Technical Services Group within the URS Federal Services business. He also served as a member of the URS Management Committee and Risk Management Committee. Mr. Wotring currently serves on the Board of Directors of TimkenSteel.

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COMPENSATION OF EXECUTIVE OFFICERS
AND OTHER INFORMATION

COMPENSATION DISCUSSION AND ANALYSIS
(CD&A)

At AECOM, our executive compensation plans are driven by short- and long-term financial performance metrics designed to ensure management is incentivized to increase stockholder value over time.

In fiscal year 2014, the Company delivered earnings per share¹ growth and continued to execute a returns driven capital allocation strategy including both repurchases of common stock and the issuance of debt and common stock to finance the URS transaction (as described below). The Company continued its expansion into international markets with growth in Europe, the Middle East, Africa and Asia while delivering strong construction services wins and accelerating construction services revenue growth. On October 17, 2014, during the beginning of fiscal year 2015, AECOM completed its acquisition of URS Corporation, further diversifying and broadening its market presence and its service offerings to clients, by adding strong sector expertise in important end markets, including oil & gas, power and government services, as well as bolstering our construction capabilities. The combination with URS differentiates AECOM in the market with the ability to design, build, finance and operate infrastructure across the globe with nearly 100,000 employees operating across all seven continents and in more than 150 countries.

The achievements discussed above have been supported by our strong relationships with our clients, and driven by our talented employees, a strong leadership team and effective leadership succession planning. On March 5, 2014, John M. Dionisio, the Company's Chairman and CEO, retired as CEO and was appointed by the Company's Board of Directors as Executive Chairman. Concurrently, the Board appointed Michael S. Burke to the position of CEO of the Company effective March 6, 2014. In early fiscal year 2015, in connection with the closing of the URS transaction described above, the Company announced additional leadership appointments. In particular, the Company's Board of Directors appointed Stephen M. Kadenacy to the position of President and Chief Financial Officer, reporting to Mr. Burke. Also, effective as of the 2015 Annual Meeting, the Board has determined that Mr. Burke will assume the additional position of Chairman of the Board.

In addition to Messrs. Burke, Dionisio and Kadenacy, our Named Executive Officers (or NEOs) for fiscal year 2014 include Ms. Jane A. Chmielinski, our Chief Operating Officer and President, Americas; Mr. Frederick W. Werner, who was appointed to serve as Group President, Design and Consulting Services, in October 2014 and previously served as President, EMEA (Europe, Middle East, and Africa) during fiscal 2014; and Mr. Anthony C.K. Shum, who served as President, APAC (Asia-Pacific) in fiscal 2014 and transitioned to Chairman, APAC in October 2014.

Through a combination of operational and financial initiatives, AECOM has a balanced approach to capital allocation with the goal of optimizing long-term returns. AECOM is focused on strengthening its presence in large key, fast-growing markets, improving project delivery, enhancing the client experience and leveraging the Company's global end-to-end service platform. As a result, the Company's geographic footprint, services portfolio and end market exposure are well aligned with global growth opportunities. Financially, AECOM is committed to improved returns over time driven by profitable growth and enhanced cash conversion, which provide additional opportunities for deploying capital in value enhancing ways.

1

Earnings per share for fiscal year 2014 is a non-GAAP measure defined as diluted earnings per share from continuing operations attributable to AECOM and excludes acquisition and integration costs.

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Since the Company's IPO in 2007, it has delivered strong performance across various economic environments, as illustrated by the financial metrics in the graphs below.

CAGR: Compound annual growth rate; EBITDA and EBITDA Margin: Non-GAAP measures. EBITDA is defined as earnings before interest expenses, taxes, depreciation and amortization and EBITDA margin is defined as EBITDA divided by revenue, net of other direct costs, which is also a non-GAAP measure that segregates other direct costs from revenue; bps: Basis points; Earnings Per Share (EPS): Non-GAAP measure is defined as diluted EPS from continuing operations attributable to AECOM and excludes acquisition and integration costs; Free Cash Flow: Non-GAAP measure is defined as net cash provided by operating activities less payments for capital expenditures; Backlog: Non-GAAP measure is defined as future awarded or contracted gross revenue.

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The Committee determined that the appropriate Total Direct Compensation (TDC), comprised of base salary, STI and LTI, for Mr. Burke and Mr. Dionisio for 2014 performance was $13.6 million and $9.5 million, respectively. Despite economic headwinds within its domestic market, AECOM delivered fiscal year 2014 earnings per share growth (excluding acquisition and integration costs) and achieved per share cash flow targets in addition to returning $25 million of its free cash flow to stockholders through its share repurchase program. This performance supported an 8% increase in share price in fiscal year 2014, slightly above the 50th percentile compared to our peer group. The Committee considered the increase in stockholder value driven by the balanced capital allocation strategy, as well as the organizational and operational actions Messrs. Burke and Dionisio took to effectively navigate the challenging market environment, while strengthening the competitive position of the Company, in determining their compensation.

The charts below show the components of FY2014 TDC awarded to Mr. Burke and Mr. Dionisio, respectively.

Michael S. Burke Total Direct Compensation ($ mils.)*

*

Total Direct Compensation does not include the change in pension value or all other compensation as reported in the Summary Compensation Table below.

John M. Dionisio Total Direct Compensation ($ mils.)*

*

Total Direct Compensation does not include the change in pension value or all other compensation as reported in the Summary Compensation Table below.

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A significant portion of each of the compensation packages for AECOM's CEOs is tied to the financial performance of the Company and a sustained increase in the value of the Company. The realizable value of Mr. Burke's compensation over the last three fiscal years increased by 38%, excluding the realizable value of an unvested, special one-time performance stock option award granted in connection with his promotion. In addition, the realizable value of Mr. Dionisio's equity compensation for his service as our CEO over the last three fiscal years increased by 37%. These increases are expressed in the following charts, and are primarily a result of AECOM's three-year Total Stockholder Return (TSR) increasing by 24.1% (annualized) over the same period.

The reported grant date values in the charts below represent the grant date fair value for all equity awards granted in each fiscal year as a percentage of grant date value, excluding Mr. Burke's unvested special one-time performance stock option award. The realizable value is the value of the equity awards determined by the share price at the end of fiscal year 2014 ($32.90). The Company's performance based equity award (i.e., Performance Earnings Program or PEP awards) granted in 2012 is valued at 39.0% of target, which was the actual earned percentage. PEP awards granted in 2013 and 2014 are valued based on current estimates of 113.3% and 150% respectively.

Michael S. Burke Grant Date and Realizable Equity Values

*

FY2014 Excludes Special Performance Option Award.

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John M. Dionisio Grant Date and Realizable Equity Values

The Committee understands the importance of stockholder feedback in the development of AECOM's executive compensation programs, including the annual stockholder advisory vote on executive compensation. AECOM actively seeks stockholder input as the Company periodically evaluates its compensation plans to further strengthen the link between pay and performance with the ultimate goal of creating long-term value for stockholders.

Following the 2014 Annual Meeting of Stockholders, the Company continued its active dialogue with stockholders, reaching well over 50% of its active institutional ownership, to discuss and better understand the reasons for their votes and to obtain their input on the Company's compensation programs. In response to these and prior fiscal year consultations with stockholders, the Committee implemented the following executive compensation program enhancements and actions in fiscal year 2014:

•

Amended the Company's Certificate of Incorporation to declassify the Board of Directors and provide for annual direct elections to be phased-in starting with the Class I directors standing for election at the 2015 Annual Meeting.



•

Continued to utilize financial metrics for STI and LTI that are favored by shareholders; such as:



–

STI Plan Design — Named Executive Officers (NEOs) are measured using 35% Earnings Per Share ("EPS") and 35% Operating Cash Flow Per Share. These metrics vary for NEOs with certain operational responsibilities.



–

LTI Plan Design — Maintained financial metrics in the performance-based equity awards as 50% EPS and 50% Free Cash Flow Per Share.



–

Clawback Policy — Maintained a clawback policy for incentive-based compensation.

Cash metrics were strengthened and added to align incentives to greater profitability and to cash generation that can be redistributed to stockholders over time. Furthermore, metrics are measured on a per-share basis as opposed to an aggregate growth basis to ensure that AECOM's growth is tied directly to stockholder interests.

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The table below outlines the Company's pay-for-performance philosophy and strong governance practices employed with the intention of best serving stockholders over the long term:

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FY2014 NEO TOTAL DIRECT COMPENSATION
(TDC) DECISIONS

Michael S. Burke, CEO

Excluding a special $5.0 million performance stock option award, Mr. Burke's TDC was $8.6 million, which is a 51% increase from his prior year TDC of $5.7 million, mainly attributable to his promotion to CEO in March 2014. From 2011 to his appointment as CEO, Mr. Burke served as our President. In that position, Mr. Burke was responsible for developing AECOM's long-term strategic plan and advancing the Company's strategic direction.

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The components of Mr. Burke's FY2014 TDC are detailed below:

*

TDC does not include the change in pension value or all other compensation as reported in the Summary Compensation Table.

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The chart below shows that 78% of Mr. Burke's 2014 pay is performance based, which is an increase over the prior year.

FY14 Compensation Mix at Performance for Michael S. Burke

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John M. Dionisio, Former CEO and Executive Chairman

*

TDC does not include the change in pension value or all other compensation as reported in the Summary Compensation Table.

The chart below shows that 61% of Mr. Dionisio's pay is performance based, which is similar to last year.

FY14 Compensation Mix at Performance for John M. Dionisio

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Our CEO makes recommendations to the Committee regarding the compensation of other NEOs (other than Mr. Dionisio). The CEO does not make a recommendation as to his own compensation. The following information provides highlights of specific individual and business performance criteria considered in the pay recommendations for the other NEOs. The Committee also considers overall performance of the Company when approving pay decisions for other NEOs. Included below are the Committee's 2014 TDC decisions for each NEO.

Jane A. Chmielinski, Chief Operating Officer

Ms. Chmielinski was appointed Chief Operating Officer in October 2011. In this position, Ms. Chmielinski is responsible for AECOM operations and provides leadership to ensure coordination across AECOM's geographies and end markets, while continuing to advance and better align its corporate services. In 2014, Ms. Chmielinski also served as President, Americas, with responsibility for the financial and operating performance in the Americas geography. Her 2014 short-term incentive financial metrics (70% weighting) and the Company's actual performance for fiscal year 2014 were as follows:

*

Adjusted Net Income.

**

The Company does not disclose financial information for individual geographies. The targets were designed to be challenging, but not impossible to achieve.

Ms. Chmielinski's 2014 achievements included:

•

Realigned Americas' operating structure to improve accountability and efficiency.



•

Strengthened operations leadership across the Americas.

On October 16, 2014, Ms. Chmielinski informed the Company that she will be retiring on April 1, 2015.

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Frederick W. Werner, President, Europe-Middle East-Africa

Mr. Werner was appointed President, Europe-Middle East-Africa ("EMEA"), in October 2012. Mr. Werner is responsible for leading the Company's EMEA operations. His 2014 short-term incentive financial metrics (70% weighting) and the Company's actual performance for fiscal year 2014 were as follows:

*

Days Sales Outstanding (DSO) reflects the adjusted average of the four quarters of DSO.

**

The Company does not disclose financial information for individual geographies. The targets were designed to be challenging, but not impossible to achieve.

Mr. Werner's 2014 achievements included:

•

Delivered double-digit revenue growth across Europe, the Middle East and Africa.



•

Developed successor to lead the geography.



•

Continued expansion of construction services capabilities.



•

Achieved exceptional safety performance.

Mr. Werner was appointed Group President, Design and Consulting Services, in October 2014.

Stephen M. Kadenacy, President and Chief Financial Officer

Mr. Kadenacy was appointed Chief Financial Officer in October 2011. Mr. Kadenacy is responsible for leading the Company's global financial organization and representing AECOM to investors and lenders. His 2014 short-term incentive financial metrics (70% weighting) and the Company's actual performance for fiscal year 2014 were as follows:

Mr. Kadenacy's 2014 achievements included:

•

Delivered another year of strong Free Cash Flow and cash conversion.



•

Drove completion of URS transaction, including execution of financing.



•

Launched program focused on best-in-class delivery on all phases of the project lifecycle.



•

Continued execution of real estate strategy.

Mr. Kadenacy was appointed President and Chief Financial Officer effective October 17, 2014.

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Anthony C.K. Shum, President, Asia-Pacific

Mr. Shum was appointed President, Asia-Pacific ("APAC"), in October 2012. In this role, Mr. Shum was responsible for leading the Company's operations. His 2014 short-term incentive financial metrics (70% weighting) and the Company's actual performance for fiscal year 2014 were as follows:

*

Days Sales Outstanding (DSO) reflects the adjusted average of the four quarters of DSO.

**

The Company does not disclose financial information for individual geographies. The targets were designed to be challenging, but not impossible to achieve.

Mr. Shum's 2014 achievements included:

•

Delivered 9% revenue growth in Asia, which remains positioned as one of our largest international growth opportunities.



•

Successfully implemented leadership succession plan.



•

Strengthened senior team leading Australia and New Zealand.



•

Stabilized Australian market with project wins at the highest level in nearly two years.

Mr. Shum transitioned to the position of Chairman, APAC, effective October 1, 2014.

The chart below shows that 54% of the 2014 pay for our other NEOs other than Messrs. Burke and Dionisio, is performance based, which is similar to last year.

Average FY14 Compensation Mix at Performance for Other Named Executive Officers

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During 2014, the Company generated strong cash flow and effectively executed its capital allocation strategy. The Compensation Committee's TDC decisions for fiscal year 2014, which were based on the Company's performance, are reflected in the table below.

Other NEOs TDC Decisions ($ mils.):

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PERFORMANCE EARNINGS PROGRAM

The three-year performance period for AECOM's PEP2012 closed at the end of fiscal year 2014. Performance was measured with a 50% emphasis on growth in EBITA and a 50% emphasis on return on investment. Given AECOM's achievement of the PEP2012 goals, NEOs received payments from PEP2012 at 39% of target award amounts. The following table illustrates the threshold, target, maximum and actual performance levels and associated payout schedule for PEP2012.

The two-year performance period for AECOM's PEP2013 closed at the end of fiscal year 2014. Performance was measured with a 50% emphasis on growth in EPS and a 50% emphasis on Free Cash Flow (FCF) Per Share. Given AECOM's achievement of the PEP2013 goals, NEOs earned payments from PEP2013 at 113.3% (150% in Year 1 and 76.6% in Year 2) of target award amounts. The following table illustrates the threshold, target, maximum and actual performance levels and associated payout schedule for PEP2013. Although the performance period for PEP2013 ended at the end of fiscal year 2014, continued employment through December 15, 2015, is required before the PEP2013 awards become vested.

The first year of the two-year performance period for AECOM's PEP2014 closed at the end of fiscal year 2014. Performance was measured with a 50% emphasis on growth in EPS and a 50% emphasis on Free Cash Flow (FCF) Per Share. Given AECOM's achievement of the PEP2014 goals, NEOs earned payments from the first year of PEP2014 at 200% of the target award amounts. The following table illustrates the threshold, target, maximum and actual performance levels and associated payout schedule for the first year of PEP2014. Although the first year of the performance period for PEP2014 ended at the end of fiscal year 2014, continued employment through December 15, 2016, is required before the PEP2014 awards become vested.

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EXECUTIVE COMPENSATION PROGRAM STRUCTURE

The purpose of AECOM's executive compensation program is to recognize and reward outstanding achievement, as well as attract, motivate, reward and retain executives in a competitive environment. The Committee seeks feedback from investors to better align its executive compensation program with stockholders' interests.

AECOM'S PAY PHILOSOPHY

The Committee's approach to compensation for executives is directly linked to the Company's business focus on profitable growth and improved returns, as well as rewarding performance. Specifically, AECOM's compensation philosophy is composed of the following elements:

•

Seeking to provide a competitive compensation package that will allow AECOM to attract, motivate, reward and retain key talent to achieve business objectives;



•

Providing incentives that promote sustained short- and long-term financial growth and returns in order to enhance stockholder value;



•

Believing in a strong pay-for-performance model, with a majority of NEO compensation at-risk and total compensation over time dependent on, and balanced between, each executive's individual performance and the overall performance of the Company; and



•

Aiming to optimize performance without encouraging unreasonable risks or incentivizing behavior that would be reasonably likely to result in a material adverse effect on the Company.

The Company's pay program is designed to reward achievement of goals and to attract, motivate, reward and retain leaders in an increasingly competitive talent market. For fiscal year 2014 compensation decisions, the Committee examines pay data for a group of 18 companies to stay current with market pay practices and trends, and to understand the competitiveness of the Company's total compensation and its components of pay. The Committee uses this data for informational purposes. The Company does not target a specific percentile or make significant pay decisions based on market data alone. The Committee considers Company performance as well as the level of responsibility, experience and tenure of the individual and performance in the role.

This group consists of companies within AECOM's industry and companies specializing in industrial services or government contracting with sizeable international presence in locations where AECOM operates and competes for talent.

For the most recent trailing four quarters available ending June 30, 2014, sales for our peer group companies ranged from $1.9 billion to $31.1 billion, as compared to $7.9 billion for AECOM, while net income for our peer group companies ranged from ($449 million) to $2.9 billion, as compared to $242 million for AECOM. As of September 2014 month end, market capitalization for our peer group companies ranged from $1.2 billion to $51.3 billion, as compared to $3.4 billion for AECOM. For the most recent trailing four quarters available ending June 30, 2014, the median sales for our peer group companies were $8.6 billion, while the median net income

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for our peer group companies was $188 million. As of September 2014 month end, the median market capitalization for our peer group companies was $3.9 billion.

AECOM uses specific measures to drive and reward performance:

•

Profitability and growth (measured by growth in EPS, Operating Cash Flow Per Share and Free Cash Flow Per Share).



•

Stockholder value creation (measured by stock price).



•

Market share and sustainable competitive advantage (attainment of strategic milestones).

COMPENSATION GOVERNANCE, PROCESS AND DECISIONS

Under its charter, the Committee, which is composed solely of independent directors, has the sole authority to determine and approve compensation for AECOM's executive officers. The Committee is also responsible for reviewing the compensation for the members of the Company's Board of Directors and submits any modifications for approval by the Board of Directors.

To implement the compensation principles outlined above, the Committee reviews compensation for the NEOs considering base salary, as well as STI and LTI compensation, with a focus on the total reward package. The Company looks to AECOM's peer group of companies, as well as the broader market, as a base line for compensation decisions for NEOs. However, AECOM does not target executive officer compensation at a specific level or percentage relative to compensation provided by the companies in the peer group or broader market, whether for TDC or any element of TDC. Instead, when determining compensation for the executive officers, the Committee takes into account a broad array of factors, including the experience level of the individuals in their current positions, the overall financial and strategic performance of the Company during the year, and the performance and contribution of each individual executive during the year relative to pre-defined goals and objectives for each individual.

At the beginning of each year, the Committee:

•

Approves design changes to the executive compensation program, as applicable.



•

Reviews the Company's financial, strategic and operational metrics and goals, and approves the performance objectives of the CEO and other executive officers.

During the following November, the Committee:

•

Reviews full-year Company financial and strategic performance to understand what was accomplished relative to established objectives.



•

Evaluates the CEO's performance in light of the review of Company performance.



•

Discusses with the CEO his evaluation of the performance of each of the other executive officers relative to their individual performance objectives.

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•

Determines TDC amounts for the CEO and each of the other executive officers, starting with the prior year's compensation, and adjusted based on:



–

Performance assessments (described in the 2014 TDC Decisions section above).



–

Market considerations.



–

Company payment guidelines, individual performance and succession planning and retention considerations.



–

Input from the Committee's independent compensation consultant.



–

For the other NEOs (other than Mr. Dionisio): The CEO's recommendations.



•

Reviews and approves the payouts for each PEP with performance periods completed at the end of the fiscal year.

Compensation decisions for 2014 related to base salary and long-term compensation were made in November 2013, except with regard to Mr. Burke, whose compensation decisions were made upon his appointment as CEO on March 6, 2014. Decisions regarding short-term compensation were made in November 2014.

LTI COMPENSATION

The initial step in determining LTI awards is the Committee's determination of an overall pool for LTI awards. This determination is based on a recommendation from the CEO, which takes into account the size of previous pools relative to the growth in the Company's earnings and in eligible employees; the accounting expense; the number of shares that would be granted relative to AECOM common shares outstanding; and the external competitiveness of individual awards.

The Committee considers market data, including the comparable TDC, and determines the LTI value to be awarded to each NEO. In making these decisions, the Committee takes into account the impact of the awards to the NEOs on the remaining pool available for allocation to other executives. The dollar value awarded by the Committee to each NEO is then converted into a specific number of units, based on the fair market value of AECOM common stock on the date of grant. The grant date fair value of awards provided to each NEO for fiscal year 2014 can be found in the column labeled "Stock Awards" of the Summary Compensation Table.

The Committee has the authority to retain the services of outside consultants to assist it in performing its responsibilities. Since January 2010, the Committee has engaged the services of the consulting firm Exequity LLP. During fiscal year 2014, the consultant provided data on the compensation and relative performance of peer group companies as well as general industry data to the Committee; made presentations on regulatory and legislative matters affecting executive compensation; provided opinions on the degree to which compensation arrangements are consistent with market practices; and consulted on other compensation matters as needed. Exequity LLP does not provide any additional services to the Company.

The Committee has assessed the independence of Exequity LLP, considering the following six factors and other factors that it deemed relevant: (1) other services provided to the Company by Exequity LLP; (2) the amount of fees paid by the Company to Exequity LLP as a percentage of Exequity LLP's total revenue; (3) the policies or procedures maintained by Exequity LLP that are designed to prevent conflicts of interest; (4) any business or personal relationships between the individual employees of Exequity LLP involved in the engagement and a member of the Committee; (5) any Exequity LLP stock owned by Exequity LLP's employees involved in the engagement; and (6) any business or personal relationships between our executive officers and Exequity LLP or the employees of Exequity LLP involved in the engagement. Following such assessment, the Committee concluded that Exequity LLP is independent and that Exequity LLP's work raises no conflicts of interest.

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OTHER PROGRAMS, POLICIES AND GUIDELINES

NEOs are subject to stock ownership guidelines, which ensures their interests are aligned with those of stockholders. Under the guidelines, AECOM's CEO must maintain ownership of AECOM stock at six times base salary and the other NEOs at three times base salary. The minimum number of shares required to meet the guideline is updated annually based on each executive's salary and the 12-month trailing average AECOM stock price. Shares owned directly and indirectly, deferred stock units, unvested PEP units as well as other RSUs and vested stock options/shares are counted toward the guidelines. Executives have until five years from becoming subject to the guidelines to comply with these guidelines.

The following table outlines the stock ownership of AECOM's NEOs as of September 30, 2014. All of the Company's NEOs exceed the stock ownership guidelines.

To protect the Company's executives' health and well-being, facilitate the operation of the business, assist in the retention of current executives and aid in the recruitment of new executives, AECOM's NEOs are eligible to participate in benefit plans that are available to a substantial amount of all employees, including participation in retirement plans, medical insurance, dental insurance, life insurance and disability insurance programs. Further, the Company offers certain additional benefits only to executive officers and other senior officers, where applicable, which consist of the following:

•

Executive Life Insurance. AECOM provides life insurance coverage for an amount up to $2 million.



•

Executive Disability Program. AECOM provides an Executive Disability Program which offers salary replacement up to 60% of salary in the event of an executive's disability.



•

Executive Health Program. AECOM's CEO, Executive Chairman, and Group President, Design and Consulting Services, became executive officers prior to the time the plan became frozen to new participants, are eligible to participate in the U.S. Executive Health Program on an annual basis. This plan provides up to 100% reimbursement for medically necessary medical, prescription, dental and vision expenses.



•

AECOM Executive Deferred Compensation Plan (EDCP). The EDCP, which was ratified by the Company in December 2012, is a nonqualified deferred compensation plan that enables highly compensated U.S. employees to defer compensation.



•

AECOM Pension Plan, Management Supplemental Executive Retirement Plan (MSERP), 1992 Supplemental Executive Retirement Plan (92 SERP) and Excess Benefit Plan. Effective October 9, 2009, AECOM decided to freeze future accruals to the AECOM Pension Plan, MSERP, 92 SERP and Excess Benefit Plan for all plan participants. Since the October 9, 2009, freeze, participants have not

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accrued any additional benefits under the plans. Additional information is provided below in the Pension Benefits for Fiscal Year 2014 section.

•

Perquisites. The Company believes that offering NEOs certain limited perquisites, including an executive allowance (ranging from $20,000 to $40,000 annually), facilitates the operation of AECOM's business and assists in their retention.

Effective March 5, 2009, the Company adopted the "AECOM Technology Corporation Change in Control Severance Policy for Key Executives." The policy was created to provide severance benefits to key executives and to make certain that those executives would remain focused on stockholder interests in the event of a corporate transaction, in connection with a change in control of the Company.

The policy provides the following benefits upon termination without cause or for good reason following a change in control ("double trigger" for cash and equity):

•

A lump-sum severance payment equal to a multiple (two times for both the former and current CEO and one-and-a-half times for the other NEOs) of the sum of each individual's base salary and average bonus (the average of the bonus paid for the three fiscal years preceding the year of termination);



•

Continuation of group health benefits for the number of years equal to the severance multiple;



•

Accelerated vesting of all time vested equity awards, including stock options and RSUs;



•

Accelerated vesting of performance based awards, such as PEP awards, with payment based on performance achievement through the date of the change in control; and



•

Pro rata bonus payment during the year of termination.

The policy does not provide a gross-up for excise or other taxes. Additional details can be found under the "Payments and Benefits upon Termination or Change in Control" section of this Proxy Statement. The Company also entered into a letter agreement with Mr. Burke that provides certain enhanced severance benefits to him in the event of an involuntary termination that is not covered by the Change in Control Severance Policy. A summary of the key terms of this letter agreement, as well as additional details, can be found under the "Payments and Benefits upon Termination or Change in Control" section of this Proxy Statement.

The Company also maintains a severance policy for U.S. employees, including each of the NEOs. U.S. employees may be eligible for severance if their employment is terminated due to lack of work, restructuring/reorganization of a group, a reduction in force with no reasonable offer of an internal transfer, elimination of a job/position or voluntary acceptance of a Company-initiated retirement program. A release agreement must be signed in order to receive severance pay. Employees with a title of Vice President or above are eligible for 12 weeks of base pay regardless of years of service.

In November 2012, the Committee adopted a clawback policy with respect to incentive awards to executive officers under the Executive Incentive Plan and 2006 Stock Incentive Plan that were awarded subsequent to fiscal year 2012. In the event of material noncompliance with any financial reporting requirement under the securities laws, the Company is authorized to recover a portion of incentive awards paid to current or former executive officers during the three full fiscal years prior to the date of the covered event, but in no event prior to the effective date of the policy (October 1, 2012).

The Company's insider trading policy prohibits all directors, executive officers (as defined by Section 16 of the Securities Act of 1934) and certain other employees designated as insiders from engaging in any hedging or

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monetization transactions, such as zero-cost collars and forward-sale contracts, involving Company securities. In addition, the policy prohibits buying shares on margin and the pledging of Company securities by NEOs except in certain limited circumstances subject to Company approval and demonstration of the NEO's ability to repay the applicable loan without selling such securities.

Section 162(m) of the Internal Revenue Code limits a company's federal tax deduction on compensation paid in excess of $1 million a year to the CEO and the other NEOs other than the CFO. The IRS' limitation does not apply to compensation that qualifies as "performance based" under federal tax law. AECOM's policy is to structure compensation arrangements, to the extent practicable, with the Company's executive officers that are intended to be deductible under federal tax law, unless the benefit of such deductibility is outweighed by AECOM's corporate objectives. However, since corporate objectives may not always be consistent with the requirements for full deductibility, and further given that the application of Section 162(m) is complex and may change with time (with potentially retroactive effect), AECOM is prepared, when appropriate, to enter into compensation arrangements under which payments may not be deductible under Section 162(m).

Financial Accounting Standards Board Accounting Standards Codification Topic 718 (which formerly was referred to as SFAS 123R), requires a charge to compensation expense for the fair value of equity compensation awards. Grants of stock options, RSUs and PEP awards under the Company's 2006 Stock Incentive Plan are accounted for under Codification Topic 718. The Committee considers the accounting implications of significant compensation decisions, particularly in connection with decisions that relate to AECOM's LTI awards.

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REPORT OF THE COMPENSATION/ORGANIZATION
COMMITTEE OF THE BOARD OF DIRECTORS

The Compensation/Organization Committee has reviewed and discussed with management the Compensation Discussion and Analysis and, based on such review and discussions, recommended to the Board of Directors that the Compensation Discussion and Analysis be included in the Company's Annual Report on Form 10-K and this Proxy Statement.

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The following tables provide information regarding the compensation awarded to or earned during our Fiscal Year ("FY") ended September 30, 2014 (valued as of October 3, 2014), by our current Principal Executive Officer ("PEO"), our Principal Financial Officer ("PFO") and the four most highly compensated executive officers other than the PEO and PFO, collectively our "Named Executive Officers" or "NEOs."

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The Compensation/Organization Committee typically considers and approves non-equity incentive targets and long-term incentive awards in the first quarter of each fiscal year at regular meetings. The grant date for the long-term incentive award is the date the Compensation/Organization Committee meets and approves the award.

The following table sets forth information with respect to non-equity incentive targets and long-term incentive awards granted to Named Executive Officers during FY2014. The long-term incentive awards issued on November 20, 2013, used the following mix: 60% PEPs and 40% RSUs. Mr. Burke also received long-term incentive awards issued on March 5, 2014, related to his promotion to CEO, which were also granted in a 60% PEP and 40% RSUs mix. Refer to the "Compensation Discussion and Analysis — FY2014 NEO Total Direct Compensation (TDC) Decisions" section in this Proxy Statement for more information regarding the various long-term incentive programs. All of the long-term incentive awards in the table below were made pursuant to the Company's 2006 Stock Incentive Plan.

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The following table sets forth information with respect to all outstanding long-term incentive awards granted to Named Executive Officers as of September 30, 2014.