sc13dza
 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13D
(Rule 13d-101)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
RULE 13d-1(a) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(a)
(Amendment No. 6)1
Aspen Technology, Inc.
 
(Name of issuer)
Common Stock, par value $0.10
 
(Title of class of securities)
045327103
 
(CUSIP number)
Jarlyth H. Gibson, Compliance Officer 617-951-9493
C/o Advent International Corporation, 75 State Street, 29th Floor
Boston, MA 02109
 
(Name, Address and Telephone Number of Person Authorized to Receive
Notices and Communications)
September 28, 2010
 
(Date of event which requires filing of this statement)
     If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box :.o
     Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.
(Continued on following pages)
1   The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.
     The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).
 
 

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
2 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent International Corporation
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   8,812,336
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   8,812,336
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  8,812,336
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  9.49%
     
14   TYPE OF REPORTING PERSON*
   
  CO, IA

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
3 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent International Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   8,649,037
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   8,649,037
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  8,649,037
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  9.31%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
4 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent Energy II Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   581,621
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   581,621
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  581,621
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.63%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
5 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent PGGM Global Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   123,365
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   123,365
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  123,365
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.13%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
6 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Digital Media & Communications III Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   569,617
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   569,617
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  569,617
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.61%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
7 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Digital Media & Communications III-A Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   282,007
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   282,007
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  282,007
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.30%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
8 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Digital Media & Communications III-B Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   70,485
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   70,485
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  70,485
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.08%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
9 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Digital Media & Communications III-C Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   1,128,000
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   1,128,000
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  1,128,000
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  1.21%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
10 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Digital Media & Communications III-D C.V.
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Netherlands
       
  7   SOLE VOTING POWER
     
NUMBER OF   211,489
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   211,489
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  211,489
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.23%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
11 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Digital Media & Communications III-E C.V.
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Netherlands
       
  7   SOLE VOTING POWER
     
NUMBER OF   141,004
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   141,004
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  141,004
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.15%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
12 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Global Private Equity III Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   1,233,729
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   1,233,729
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  1,233,729
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  1.33%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
13 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Global Private Equity IV Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   4,307,720
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   4,307,720
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  4,307,720
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  4.64%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
14 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent Partners (NA) GPE-III Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   3,137
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   3,137
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  3,137
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  0.00%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
15 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent Partners DMC III Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   32,689
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   32,689
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  32,689
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 
   
  0.04%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
16 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent Partners GPE-III Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   10,563
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   10,563
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  10,563
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 
   
  0.01%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
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1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent Partners GPE-IV Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   54,523
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   54,523
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  54,523
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 
   
  0.06%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D Page  
18 
   of   
21 

 

           
1   NAME OF REPORTING PERSON
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

Advent Partners II Limited Partnership
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a)   þ 
  (b)   o 
     
3   SEC USE ONLY
   
   
     
4   SOURCE OF FUNDS
   
  WC
     
5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
   
  o
     
6   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  Delaware
       
  7   SOLE VOTING POWER
     
NUMBER OF   62,387
       
SHARES 8   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   None
       
EACH 9   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   62,387
       
WITH 10   SHARED DISPOSITIVE POWER
     
    None
     
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  62,387
     
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
   
  o
     
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 
   
  0.07%
     
14   TYPE OF REPORTING PERSON*
   
  PN

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
19 
   of   
21 
Item 1. Security and Issuer
     This statement on Amendment No. 6 to Schedule 13D (“Amendment No. 6”) relates to the Reporting Persons’ beneficial ownership interest in the Common Stock, par value $0.10 per share, of Aspen Technology, Inc., a Delaware corporation (the “Corporation”). The address of the principal executive office of the Corporation is 200 Wheeler Road, Burlington, MA 01803. This Amendment No. 6 amends the initial statement on Schedule 13D filed with the Securities and Exchange Commission (the “Commission”) on August 22, 2003, as amended by Amendment No. 1 thereto filed with the Commission on June 6, 2006, Amendment No. 2 thereto filed with the Commission on July 26, 2006, Amendment No. 3 thereto filed with the Commission on December 15, 2006, Amendment No. 4 thereto filed with the Commission on December 22, 2006 and Amendment No. 5 thereto filed with the Commission on February 14, 2008 (as so amended, the “Schedule 13D”). This Amendment No. 6 is being filed by the Reporting Persons to amend Item 5. Terms defined in the Schedule 13D are used herein as so defined.
Item 5. Interest in Securities of the Issuer.
          Item 5 of the Schedule 13D is hereby amended as set forth in the following table which reports the aggregate number and percentage of the Common Stock beneficially owned by each Reporting Person named in Item 2 of the Schedule 13D (based upon 92,892,014 shares of Common Stock outstanding as of September 1, 2010). The table has been amended to reflect sales made on behalf of each Reporting Person since Amendment No. 5 was filed. On September 28, 2010, the Reporting Persons listed below completed the sale of an aggregate of 20,700,000 shares of Commons Stock in an underwritten offering, at a price per share to the underwriters of $8.569. The aggregate number and percentage of the Common Stock beneficially owned by each Reporting Person is calculated in accordance with Rule 13d-3.
                                 
                    Number of   Number of
    Number of   Percentage   Shares   Shares
    Shares   of Common   Acquired   Disposed of
    Beneficially   Stock   during Past   during Past
    Owned   Outstanding   60 Days   60 Days
Reporting Person
                                
Advent International Corporation (1),(2)
     8,812,336       9.49 %     0       20,700,000  
Advent International Limited Partnership (1)
     8,649,037       9.31 %     0       20,316,398  
Advent Energy II Limited Partnership (1)
     581,621       0.63 %     0       1,366,214  
Advent PGGM Global Limited Partnership (1)
     123,365       0.13 %     0       289,786  
Digital Media & Communications III Limited Partnership (1)
     569,617       0.61 %     0       1,338,021  
Digital Media & Communications III-A Limited Partnership (1)
     282,007       0.30 %     0       662,428  
Digital Media & Communications III-B Limited Partnership (1)
     70,485       0.08 %     0       165,572  
Digital Media & Communications III-C Limited Partnership (1)
     1,128,000       1.21 %     0       2,649,641  
Digital Media & Communications III-D C.V. (1)
     211,489       0.23 %     0       496,786  
Digital Media & Communications III-E C.V. (1)
     141,004       0.15 %     0       331,214  
Global Private Equity III Limited Partnership (1)
     1,233,729       1.33 %     0       2,897,999  
Global Private Equity IV Limited Partnership (1)
     4,307,720       4.64 %     0       10,118,737  
 
Advent Partners (NA) GPE-III Limited Partnership (2)
     3,137       0.00 %     0       7,376  
Advent Partners DMC III Limited Partnership (2)
     32,689       0.04 %     0       76,789  
Advent Partners GPE-III Limited Partnership (2)
     10,563       0.01 %     0       24,815  

 

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
20 
   of   
21 
                                 
                    Number of   Number of
    Number of   Percentage   Shares   Shares
    Shares   of Common   Acquired   Disposed of
    Beneficially   Stock   during Past   during Past
    Owned   Outstanding   60 Days   60 Days
Advent Partners GPE-IV Limited Partnership (2)
     54,523       0.06 %     0       128,074  
Advent Partners II Limited Partnership (2)
     62,387       0.07 %     0       146,548  
Total Group
     8,812,336       9.49 %     0       20,700,000  
 
(1)   Advent International Corporation (“AIC”) is the General Partner of Advent International Limited Partnership (“AILP”) which in turn is the General Partner of the indicated Reporting Persons. As such, AIC has the sole power to vote and dispose of the securities owned by the indicated Reporting Persons. The beneficial ownership of AIC and AILP derive from such power.
 
(2)   AIC is the General Partner of the indicated Reporting Person. As such, AIC has the sole power to vote and dispose of the securities owned by the indicated reporting persons. The beneficial ownership of AIC derives from such power.
 
(b)   Each of the Reporting Persons listed in the table set forth above has sole voting and dispositive power over the Common Stock beneficially owned by it as indicated above.

 

 

                     
CUSIP No.
  
045327103 
 Schedule 13D  Page  
21 
   of   
21 
SIGNATURE
     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
September 30, 2010
Global Private Equity IV Limited Partnership
Global Private Equity III Limited Partnership
Advent PGGM Global Limited Partnership
Digital Media & Communications III Limited Partnership
Digital Media & Communications III-A Limited Partnership
Digital Media & Communications III-B Limited Partnership
Digital Media & Communications III-C Limited Partnership
Digital Media & Communications III-D C.V.
Digital Media & Communications III-E C.V.
Advent Energy II Limited Partnership
By: Advent International Limited Partnership,
       General Partner
By: Advent International Corporation,
       General Partner
By: Jarlyth H. Gibson, Compliance Officer*
Advent International Limited Partnership
Advent Partners II Limited Partnership
Advent Partners GPE-IV Limited Partnership
Advent Partners GPE-III Limited Partnership
Advent Partners (NA) GPE-III Limited Partnership
Advent Partners DMC-III Limited Partnership
By: Advent International Corporation,
       General Partner
By: Jarlyth H. Gibson, Compliance Officer *
ADVENT INTERNATIONAL CORPORATION
By: Jarlyth H. Gibson, Compliance Officer *
*For all of the above:
/s/ Jarlyth H. Gibson                    
Jarlyth H. Gibson, Compliance Officer