================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-Q Quarterly Schedule of Portfolio Holdings of Registered Management Investment Company Investment Company Act file number 811-02183 MassMutual Corporate Investors -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 1500 Main Street, Springfield, MA 01115 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Patricia J. Walsh, Vice President and Secretary, 1500 Main Street, Suite 2800, Springfield, MA 01115 -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: 413-226-1000 ___________________ Date of fiscal year end: 12/31 ___________________ Date of reporting period: 03/31/09 ___________________ ================================================================================ ITEM 1. SCHEDULE OF INVESTMENTS. MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES - 89.76%:(A) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ PRIVATE PLACEMENT INVESTMENTS - 85.97% A H C HOLDING COMPANY, INC. A designer and manufacturer of boilers and water heaters for the commercial sector. 15% Senior Subordinated Note due 2015 $ 2,422,966 11/21/07 $ 2,371,007 $ 2,251,383 Limited Partnership Interest (B) 23.16% int. 11/21/07 224,795 193,172 ------------ ------------ 2,595,802 2,444,555 ------------ ------------ A S A P INDUSTRIES LLC A designer and manufacturer of components used on oil and natural gas wells. 12.5% Senior Subordinated Note due 2015 $ 1,134,594 12/31/08 985,537 1,122,506 Limited Liability Company Unit Class A-2 (B) 1,276 uts. 12/31/08 140,406 133,386 Limited Liability Company Unit Class A-3 (B) 1,149 uts. 12/31/08 126,365 11 ------------ ------------ 1,252,308 1,255,903 ------------ ------------ A T I ACQUISITION COMPANY A for-profit post-secondary school serving students in Texas, Florida and Arizona. 12% Senior Subordinated Note due 2012 $ 2,125,000 04/08/04 2,125,000 2,125,000 Warrant, exercisable until 2012, to purchase preferred stock at $.01 per share (B) 13 shs. 11/16/07 -- 21,142 Warrant, exercisable until 2012, to purchase common stock at $.02 per share (B) 2,323 shs. 04/08/04 -- 1,412,684 ------------ ------------ 2,125,000 3,558,826 ------------ ------------ A W X HOLDINGS CORPORATION A provider of aerial equipment rental, sales and repair services to non-residential construction and maintenance contractors operating in the State of Indiana. 10.5% Senior Secured Term Note due 2014 $ 735,000 05/15/08 720,300 678,009 13% Senior Subordinated Note due 2015 $ 735,000 05/15/08 662,901 659,829 Common Stock (B) 105,000 shs. 05/15/08 105,000 84,000 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 36,923 shs. 05/15/08 62,395 369 ------------ ------------ 1,550,596 1,422,207 ------------ ------------ ADVANCED TECHNOLOGIES HOLDINGS A provider of factory maintenance services to industrial companies. 15% Senior Subordinated Note due 2013 $ 2,118,357 12/27/07 2,074,985 2,038,980 Preferred Stock (B) 1,031 shs. 12/27/07 510,000 568,940 ------------ ------------ 2,584,985 2,607,920 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 7 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ AERO HOLDINGS, INC. A provider of geospatial services to corporate and government clients. 10.5% Senior Secured Term Note due 2014 $ 1,627,500 03/09/07 $ 1,603,088 $ 1,591,207 14% Senior Subordinated Note due 2015 $ 1,260,000 03/09/07 1,142,821 1,223,659 Common Stock (B) 262,500 shs. 03/09/07 262,500 517,086 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 66,116 shs. 03/09/07 111,527 130,239 ------------ ------------ 3,119,936 3,462,191 ------------ ------------ ALL CURRENT HOLDING COMPANY A specialty re-seller of essential electrical parts and components primarily serving wholesale distributors. 12% Senior Subordinated Note due 2015 $ 1,140,317 09/26/08 1,039,164 1,065,587 Common Stock (B) 1,347 shs. 09/26/08 134,683 127,965 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 958 shs. 09/26/08 87,993 10 ------------ ------------ 1,261,840 1,193,562 ------------ ------------ AMERICAN HOSPICE MANAGEMENT HOLDING LLC A for-profit hospice care provider in the United States. 12% Senior Subordinated Note due 2013 $ 3,187,495 * 3,033,665 3,102,051 Preferred Class A Unit (B) 3,223 uts. ** 322,300 257,840 Preferred Class B Unit (B) 1,526 uts. 06/09/08 152,626 144,995 Common Class B Unit (B) 30,420 uts. 01/22/04 1 -- Common Class D Unit (B) 6,980 uts. 09/12/06 1 -- ------------ ------------ 3,508,593 3,504,886 ------------ ------------ ARROW TRU-LINE HOLDINGS, INC. A manufacturer of hardware for residential and commercial overhead garage doors in North America. 12% Senior Subordinated Note due 2012 $ 1,627,660 05/18/05 1,564,656 1,471,232 Common Stock (B) 497 shs. 05/18/05 497,340 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 130 shs. 05/18/05 112,128 -- ------------ ------------ 2,174,124 1,471,232 ------------ ------------ BRAVO SPORTS HOLDING CORPORATION A designer and marketer of niche branded consumer products including canopies, trampolines, in-line skates, skateboards, and urethane wheels. 12.5% Senior Subordinated Note due 2014 $ 2,281,593 06/30/06 2,165,262 2,012,790 Preferred Stock Class A (B) 879 shs. 06/30/06 268,121 41,232 Common Stock (B) 1 sh. 06/30/06 286 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 309 shs. 06/30/06 92,102 14,491 ------------ ------------ 2,525,771 2,068,513 ------------ ------------ * 01/22/04 and 06/09/08. ** 01/22/04 and 09/12/06. -------------------------------------------------------------------------------------------------------------------------------- 8 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ C D N T, INC. A value-added converter and distributor of specialty pressure sensitive adhesives, foams, films, and foils. 10.5% Senior Secured Term Note due 2014 $ 750,872 08/07/08 $ 735,855 $ 679,561 12.5% Senior Subordinated Note due 2015 $ 750,872 08/07/08 681,929 650,797 Common Stock (B) 73,256 shs. 08/07/08 73,256 36,628 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 57,600 shs. 08/07/08 57,689 576 ------------ ------------ 1,548,729 1,367,562 ------------ ------------ CAPITAL SPECIALTY PLASTICS, INC. A producer of desiccant strips used for packaging pharmaceutical products. Common Stock (B) 109 shs. * 503 279,466 ------------ ------------ CLOUGH, HARBOUR AND ASSOCIATES An engineering service firm that is located in Albany, NY. 12.25% Senior Subordinated Note due 2015 $ 2,400,000 12/02/08 2,225,100 2,351,312 Preferred Stock (B) 277 shs. 12/02/08 276,900 263,055 ------------ ------------ 2,502,000 2,614,367 ------------ ------------ COEUR, INC. A producer of proprietary, disposable power injection syringes. 12% Senior Subordinated Note due 2016 $ 1,214,286 10/10/08 1,098,929 1,147,163 Common Stock (B) 607 shs. 10/10/08 60,714 57,678 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 934 shs. 10/10/08 91,071 9 ------------ ------------ 1,250,714 1,204,850 ------------ ------------ CONNECTICUT ELECTRIC, INC. A supplier and distributor of electrical products sold into the retail and wholesale markets. 12% Senior Subordinated Note due 2014 $ 2,393,954 01/12/07 2,233,202 1,959,400 Limited Liability Company Unit Class A (B) 156,046 uts. 01/12/07 156,046 80,384 Limited Liability Company Unit Class C (B) 112,873 uts. 01/12/07 112,873 58,144 ------------ ------------ 2,502,121 2,097,928 ------------ ------------ CONNOR SPORT COURT INTERNATIONAL, INC. A designer and manufacturer of outdoor and indoor synthetic sports flooring and other temporary flooring products. Preferred Stock Series B-2 (B) 17,152 shs. 07/05/07 700,392 1,715,247 Preferred Stock Series C (B) 8,986 shs. 07/05/07 300,168 642,470 Common Stock (B) 718 shs. 07/05/07 7 7 Limited Partnership Interest (B) 12.64% int. ** 189,586 -- ------------ ------------ 1,190,153 2,357,724 ------------ ------------ * 12/30/97 and 05/29/99. ** 08/12/04 and 01/14/05. -------------------------------------------------------------------------------------------------------------------------------- 9 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ COREPHARMA LLC A manufacturer of oral dose generic pharmaceuticals targeted at niche applications. 12% Senior Subordinated Note due 2013 $ 2,550,000 08/04/05 $ 2,454,200 $ 2,386,866 Warrant, exercisable until 2013, to purchase common stock at $.001 per share (B) 20 shs. 08/04/05 137,166 147,425 ------------ ------------ 2,591,366 2,534,291 ------------ ------------ CRANE RENTAL CORPORATION A crane rental company. 13% Senior Subordinated Note due 2015 $ 2,295,000 08/21/08 2,065,184 2,204,056 Common Stock (B) 255,000 shs. 08/21/08 255,000 242,250 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 136,070 shs. 08/21/08 194,826 1,361 ------------ ------------ 2,515,010 2,447,667 ------------ ------------ DAVIS-STANDARD LLC A manufacturer, assembler, and installer of a broad range of capital equipment that is used in the extrusion, conversion, and processing of plastic materials. 12% Senior Subordinated Note due 2014 $ 1,847,826 10/30/06 1,745,715 1,752,467 Limited Partnership Interest (B) 1.82% int. 10/30/06 702,174 1,280,261 Warrant, exercisable until 2014, to purchase preferred stock at $.01 per share (B) 50 shs. 10/30/06 49,830 62,016 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 34 shs. 10/30/06 34,000 122,627 ------------ ------------ 2,531,719 3,217,371 ------------ ------------ DIVERSCO, INC./DHI HOLDINGS, INC. A contract provider of janitorial and equipment maintenance services and temporary production labor to industrial customers. Membership Interests of MM/Lincap Diversco Investments Ltd. LLC (B) 27.20% int. 08/27/98 734,090 -- Preferred Stock (B) 3,278 shs. 12/14/01 2,784,133 1,319,430 Warrant, exercisable until 2011, to purchase common stock of DHI Holdings, Inc. at $.01 per share (B) 13,352 shs. * 403,427 -- ------------ ------------ 3,921,650 1,319,430 ------------ ------------ DUNCAN SYSTEMS, INC. A distributor of windshields and side glass for the recreational vehicle market. 10% Senior Secured Term Note due 2013 $ 540,000 11/01/06 531,900 499,133 13% Senior Subordinated Note due 2014 $ 855,000 11/01/06 775,731 766,378 Common Stock (B) 180,000 shs. 11/01/06 180,000 129,267 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 56,514 shs. 11/01/06 78,160 40,586 ------------ ------------ 1,565,791 1,435,364 ------------ ------------ * 10/24/96 and 08/28/98. -------------------------------------------------------------------------------------------------------------------------------- 10 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ DWYER GROUP, INC. A franchiser of a variety of home repair services. Common Stock (B) 6,906 shs. * $ 690,600 $ 1,144,557 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 2,034 shs. 10/30/03 186,469 337,034 ------------ ------------ 877,069 1,481,591 ------------ ------------ E S P HOLDCO, INC. A manufacturer of power protection technology for commercial office equipment, primarily supplying the office equipment dealer network. 14% Senior Subordinated Note due 2015 $ 2,275,313 01/08/08 2,233,677 2,075,147 Common Stock (B) 660 shs. 01/08/08 329,990 167,844 ------------ ------------ 2,563,667 2,242,991 ------------ ------------ E X C ACQUISITION CORPORATION A manufacturer of pre-filled syringes and pump systems used for intravenous drug delivery. Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 22 shs. 06/28/04 77,208 211,487 ------------ ------------ ELECTRA BICYCLE COMPANY LLC A designer and marketer of branded leisure bicycles. Limited Liability Company Unit Series F 64,597 uts. 04/12/07 64,597 99,557 Limited Liability Company Unit Series G 4,990 uts. 04/12/07 4,990 7,691 ------------ ------------ 69,587 107,248 ------------ ------------ EVANS CONSOLES, INC. A designer and manufacturer of consoles and control center systems. Common Stock (B) 90,000 shs. 05/06/04 6 1,271,148 ------------ ------------ F C X HOLDINGS CORPORATION A distributor of specialty/technical valves, actuators, accessories, and process instrumentation supplying a number of industrial, high purity, and energy end markets in North America. 15% Senior Subordinated Note due 2015 $ 2,143,782 10/06/08 2,099,628 1,999,905 Preferred Stock (B) 4,341 shs. 10/06/08 434,074 412,395 Common Stock (B) 3,069 shs. 10/06/08 3,069 2,916 ------------ ------------ 2,536,771 2,415,216 ------------ ------------ F H S HOLDINGS LLC A national provider of customized disease management services to large self-insured employers. 12% Senior Subordinated Note due 2014 $ 2,390,625 06/01/06 2,252,674 1,792,969 Limited Liability Company Units of Linden/FHS Holdings LLC (B) 159 uts. 06/01/06 159,362 -- Common Unit Class B (B) 1,386 uts. 06/01/06 122,361 -- ------------ ------------ 2,534,397 1,792,969 ------------ ------------ * 10/30/03 and 01/02/04. -------------------------------------------------------------------------------------------------------------------------------- 11 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ FLUTES, INC. An independent manufacturer of micro fluted corrugated sheet material for the food and consumer products packaging industries. 10% Senior Secured Term Note due 2013 $ 918,385 04/13/06 $ 904,609 $ 688,789 14% Senior Subordinated Note due 2014 $ 555,059 04/13/06 507,310 -- Common Stock (B) 109,436 shs. 04/13/06 109,436 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 30,940 shs. 04/13/06 48,433 -- ------------ ------------ 1,569,788 688,789 ------------ ------------ FOWLER HOLDING, INC. A provider of site development services to residential homebuilders and developers in the Raleigh/Durham region of North Carolina. 12% Senior Subordinated Note due 2013 (D) $ 2,365,217 02/03/06 2,121,304 -- Common Stock (B) 185 shs. 02/03/06 184,783 -- Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 254 shs. 02/03/06 208,435 -- ------------ ------------ 2,514,522 -- ------------ ------------ FUEL SYSTEMS HOLDING CORPORATION An independent North American supplier of fuel tanks for a wide variety of commercial vehicles. 12% Senior Subordinated Note due 2014 (D) $ 2,337,500 01/31/06 2,171,538 -- Preferred Stock (B) 31,718 shs. 06/12/08 31,718 -- Common Stock (B) 212,500 shs. 01/31/06 212,500 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 138,408 shs. 01/31/06 119,213 -- ------------ ------------ 2,534,969 -- ------------ ------------ GOLDEN COUNTY FOODS HOLDING, INC. A manufacturer of frozen appetizers and snacks. 12% Senior Subordinated Note due 2015 $ 1,912,500 11/01/07 1,727,592 1,530,000 16% PIK Note due 2015 $ 136,218 * 115,668 108,974 8% Series A Convertible Preferred Stock, convertible into 4.25% of the fully dilluted common shares (B) 146,658 shs. 11/01/07 146,658 -- ------------ ------------ 1,989,918 1,638,974 ------------ ------------ GQ HOLDINGS LLC A developer and distributor of tools, equipment, and supplies to the natural and engineered stone industry. 15% Senior Subordinated Note due 2015 (D) $ 2,351,779 06/27/08 2,285,664 -- Common Stock (B) 7,304 shs. 06/27/08 250,923 -- ------------ ------------ 2,536,587 -- ------------ ------------ * 09/30/08, 12/31/08 and 03/31/09. -------------------------------------------------------------------------------------------------------------------------------- 12 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ H M HOLDING COMPANY A designer, manufacturer, and importer of promotional and wood furniture. 12% Senior Subordinated Note due 2013 (D) $ 2,210,000 02/10/06 $ 2,048,925 $ -- Preferred Stock (B) 40 shs. * 40,476 -- Common Stock (B) 340 shs. 02/10/06 340,000 -- Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 126 shs. 02/10/06 116,875 -- ------------ ------------ 2,546,276 -- ------------ ------------ HIGHGATE CAPITAL LLC An acquirer of controlling or substantial interests in manufacturing and marketing entities. Series A Preferred Units (B) 1.19% int. 07/21/94 367,440 -- ------------ ------------ HOME DECOR HOLDING COMPANY A designer, manufacturer and marketer of framed art and wall decor products. 12.5% Senior Subordinated Note due 2012 $ 2,043,269 ** 1,919,526 1,901,403 Common Stock (B) 63 shs. ** 62,742 43,022 Warrant, exercisable until 2012, to purchase common stock at $.02 per share (B) 200 shs. ** 199,501 136,800 ------------ ------------ 2,181,769 2,081,225 ------------ ------------ HOSPITALITY MINTS HOLDING COMPANY A manufacturer of individually-wrapped imprinted promotional mints. 12% Senior Subordinated Note due 2016 $ 2,075,581 08/19/08 1,920,297 1,905,887 Common Stock (B) 474 shs. 08/19/08 474,419 450,699 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 123 shs. 08/19/08 113,773 1 ------------ ------------ 2,508,489 2,356,587 ------------ ------------ INSURANCE CLAIMS MANAGEMENT, INC. A third party administrator providing auto and property claim administration services for insurance companies. Common Stock (B) 69 shs. 02/27/07 2,077 101,776 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 20 shs. 02/27/07 612 29,976 ------------ ------------ 2,689 131,752 ------------ ------------ INTEGRATION TECHNOLOGY SYSTEMS, INC. A manufacturer of steel protective computer and network systems for the industrial and office environments. 12% Senior Subordinated Note due on demand $ 43,943 03/01/04 1 -- Common Stock (B) 228 shs. 06/01/00 262,200 -- ------------ ------------ 262,201 -- ------------ ------------ * 09/18/07 and 06/27/08. ** 06/30/04 and 08/19/04. -------------------------------------------------------------------------------------------------------------------------------- 13 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ JASON, INC. A diversified manufacturing company serving various industrial markets. 13% Senior Subordinated Note due 2010 $ 963,687 08/04/00 $ 932,547 $ 912,997 Limited Partnership Interest of Saw Mill Capital Fund II, L.P. (B) 2.50% int. 08/03/00 886,479 23,311 Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 50,870 shs. 08/04/00 115,412 4,681 ------------ ------------ 1,934,438 940,989 ------------ ------------ JUSTRITE MANUFACTURING ACQUISITION CO. A manufacturer of safety products such as storage cabinets and containers. 12% Senior Subordinated Note due 2011 $ 1,593,750 12/15/04 1,540,117 1,547,998 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 1,121 shs. 12/15/04 101,109 234,485 ------------ ------------ 1,641,226 1,782,483 ------------ ------------ K H O F HOLDINGS, INC. A manufacturer of premium disposable tableware products serving both the foodservice and consumer channels. 14% Senior Subordinated Note due 2014 $ 2,386,297 10/15/07 2,349,840 2,263,668 Common Stock (B) 220,673 shs. 10/15/07 220,673 149,082 ------------ ------------ 2,570,513 2,412,750 ------------ ------------ K N B HOLDINGS CORPORATION A designer, manufacturer and marketer of products for the custom framing market. 13.5% Senior Subordinated Note due 2013 $ 2,521,107 05/25/06 2,420,867 2,268,996 Common Stock (B) 134,210 shs. 05/25/06 134,210 27,458 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 82,357 shs. 05/25/06 71,534 16,850 ------------ ------------ 2,626,611 2,313,304 ------------ ------------ K P I HOLDINGS, INC. Pace Industries is the largest player in the U.S. non-automotive, non-ferrous die casting segment. 13% Senior Subordinated Note due 2014 $ 2,106,522 07/16/08 1,968,368 1,790,544 Common Stock (B) 443 shs. 07/15/08 443,478 332,610 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 96 shs. 07/16/08 96,024 1 ------------ ------------ 2,507,870 2,123,155 ------------ ------------ K W P I HOLDINGS CORPORATION A manufacturer and distributor of vinyl windows and patio doors throughout the northwestern United States. 12.75% Senior Subordinated Note due 2014 $ 2,326,701 03/14/07 2,149,843 1,861,361 Common Stock (B) 232 shs. 03/13/07 232,000 -- Warrant, exercisable until 2017, to purchase common stock at $.01 per share (B) 167 shs. 03/14/07 162,260 -- ------------ ------------ 2,544,103 1,861,361 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 14 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ K-TEK HOLDING CORPORATION A manufacturer of instrumentation for liquid and bulk solids level detection for process and storage tanks. 14% Senior Subordinated Note due 2015 $ 2,242,269 12/20/07 $ 2,200,317 $ 2,098,349 Preferred Stock (B) 363,260 shs. 12/20/07 363,260 350,461 Common Stock (B) 102,616 shs. 12/20/07 1,026 -- ------------ ------------ 2,564,603 2,448,810 ------------ ------------ M V I HOLDING, INC. A manufacturer of large precision machined metal components used in equipment which services a variety of industries, including the oil & gas, mining, and defense markets. 13% Senior Subordinated Note due 2016 $ 1,220,974 09/12/08 1,130,660 1,153,865 Common Stock (B) 61 shs. 09/12/08 60,714 57,675 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 66 shs. 09/12/08 65,571 1 ------------ ------------ 1,256,945 1,211,541 ------------ ------------ MAIL COMMUNICATIONS GROUP, INC. A provider of mail processing and handling services, lettershop services, and commercial printing services. 12.5% Senior Subordinated Note due 2014 $ 975,000 05/04/07 912,469 921,962 Limited Liability Company Unit (B) 24,109 uts. * 314,464 378,292 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 3,375 shs. 05/04/07 43,031 52,957 ------------ ------------ 1,269,964 1,353,211 ------------ ------------ MAVERICK ACQUISITION COMPANY A manufacturer of capsules that cover the cork and neck of wine bottles. 8.26% Senior Secured Tranche A Note due 2010 (C) $ 322,013 09/03/04 322,013 317,086 12% Senior Secured Tranche B Note due 2011 $ 313,433 09/03/04 294,644 284,351 Limited Partnership Interest (B) 7.84% int. 09/03/04 58,769 16,028 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 425 shs. 09/03/04 39,473 11,581 ------------ ------------ 714,899 629,046 ------------ ------------ MEDSYSTEMS HOLDINGS LLC A manufacturer of enteral feeding products, such as feeding tubes and other products related to assisted feeding. 13% Senior Subordinated Note due 2015 $ 1,154,955 08/29/08 1,017,268 1,106,628 Preferred Unit (B) 126 uts. 08/29/08 125,519 119,244 Common Unit Class A (B) 1,268 uts. 08/29/08 1,268 1,205 Common Unit Class B (B) 472 uts. 08/29/08 120,064 5 ------------ ------------ 1,264,119 1,227,082 ------------ ------------ * 05/04/07 and 01/02/08. -------------------------------------------------------------------------------------------------------------------------------- 15 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ MEGTEC HOLDINGS, INC. A supplier of industrial and environmental products and services to a broad array of industries. 12% Senior Subordinated Note due 2016 $ 2,161,017 09/24/08 $ 1,981,274 $ 1,980,187 Preferred Stock (B) 107 shs. 09/24/08 103,255 1 Limited Partnership Interest (B) 388,983 int. 09/16/08 388,983 369,534 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 35 shs. 09/24/08 33,268 -- ------------ ------------ 2,506,780 2,349,722 ------------ ------------ MICROGROUP, INC. A manufacturer of precision parts and assemblies, and a value-added supplier of metal tubing and bars. 12% Senior Subordinated Note due 2013 $ 2,685,614 * 2,563,325 2,605,864 Common Stock (B) 450 shs. * 450,000 842,114 Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 164 shs. * 162,974 306,866 ------------ ------------ 3,176,299 3,754,844 ------------ ------------ MILWAUKEE GEAR COMPANY A manufacturer of high-precision custom gears and gear drives used by original equipment manufacturers operating in a number of industries. 13% Senior Subordinated Note due 2014 $ 2,353,846 07/21/08 2,218,036 2,236,039 Preferred Stock (B) 263 shs. 07/21/08 261,830 248,732 Common Stock (B) 18 shs. 07/21/08 20,000 19,000 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 10 shs. 07/21/08 11,285 -- ------------ ------------ 2,511,151 2,503,771 ------------ ------------ MOMENTUM HOLDING CO. A designer and supplier of upholstery fabric to commercial furniture manufacturers and architectural and design firms. Limited Partnership Interest (B) 21.23% int. 08/04/06 106,153 248,450 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 1,107 shs. 08/04/06 107,109 258,980 ------------ ------------ 213,262 507,430 ------------ ------------ MONESSEN HOLDING CORPORATION A designer and manufacturer of a broad line of gas, wood, and electric hearth products and accessories. 14% Senior Subordinated Note due 2014 $ 2,550,000 07/25/08 2,394,356 2,295,000 14% PIK Note due 2014 $ 465,006 ** 418,505 418,505 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 152 shs. 03/31/06 138,125 -- ------------ ------------ 2,950,986 2,713,505 ------------ ------------ * 08/12/05 and 09/11/06. ** 07/25/08, 09/30/08, 12/31/08 and 03/31/09. -------------------------------------------------------------------------------------------------------------------------------- 16 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ MORTON INDUSTRIAL GROUP, INC. A manufacturer of highly engineered metal fabricated components. 12% Senior Subordinated Note due 2014 (D) $ 2,440,909 08/25/06 $ 2,242,151 $ 244,091 30% Convertable Preferred Stock (B) 77,993 shs. 07/28/08 37,227 -- Common Stock (B) 1 sh. 08/25/06 1 -- ------------ ------------ 2,279,379 244,091 ------------ ------------ NABCO, INC. A producer of explosive containment vessels in the United States. 14% Senior Subordinated Note due 2014 $ 815,419 02/24/06 697,081 407,710 Limited Liability Company Unit (B) 825 uts. * 825,410 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 129 shs. 02/24/06 37,188 -- ------------ ------------ 1,559,679 407,710 ------------ ------------ NAVIS GLOBAL A designer, manufacturer, seller and servicer of finishing machinery for the knit and woven segments of the global textile industry. 12% Senior Secured Term Note Series A due 2009 $ 168,540 11/14/08 168,540 168,151 14% Senior Subordinated Note due 2014 (D) $ 1,338,613 05/28/04 1,155,793 -- 10.75% Senior Secured Note due 2011 (D) $ 609,206 05/28/04 607,397 152,302 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 203,912 shs. 05/28/04 130,789 -- ------------ ------------ 2,062,519 320,453 ------------ ------------ NESCO HOLDINGS CORPORATION A sales and leasing company that provides equipment to the electric utility, telecommunications, and various other industries. 12% Senior Secured Subordinated Note due 2015 $ 2,125,000 08/02/07 1,888,243 2,074,028 Common Stock (B) 425,000 shs. 08/02/07 425,000 588,336 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 119,360 shs. 08/02/07 194,257 165,233 ------------ ------------ 2,507,500 2,827,597 ------------ ------------ NETSHAPE TECHNOLOGIES, INC. A manufacturer of powder metal and metal injection molded precision components used in industrial, consumer, and other applications. 12% Senior Subordinated Note due 2014 $ 1,530,000 02/02/07 1,408,570 1,279,486 Limited Partnership Interest of Saw Mill PCG Partners LLC (B) 2.61% int. 02/01/07 1,019,958 -- Limited Liability Company Unit Class D of Saw Mill PCG Partners LLC (B) 15 uts. 12/18/08 15,389 12,312 Preferred Stock Class A (B) 1 sh. 12/18/08 1,370 1,097 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 91 shs. 02/02/07 90,830 -- ------------ ------------ 2,536,117 1,292,895 ------------ ------------ * 02/24/06 and 06/22/07. -------------------------------------------------------------------------------------------------------------------------------- 17 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ NYLONCRAFT, INC. A supplier of engineered plastic components for the automotive industry. 9% Senior Secured Note due 2009 $ 812,500 01/28/02 $ 812,500 $ 609,375 11.5% Senior Subordinated Note due 2012 (D) $ 1,500,000 01/28/02 1,435,279 -- Common Stock (B) 312,500 shs. 01/28/02 312,500 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 243,223 shs. 01/28/02 162,045 -- ------------ ------------ 2,722,324 609,375 ------------ ------------ OAKRIVER TECHNOLOGY, INC. Designs, engineers and assembles high precision automated process equipment for the medical device industry, with a focus on defibrillators and stents. 10% Senior Secured Note due 2012 $ 450,187 01/03/06 443,434 422,745 13% Senior Subordinated Note due 2013 $ 687,241 01/03/06 629,286 621,703 Common Stock (B) 322,307 shs. 01/03/06 322,307 -- Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 75,378 shs. 01/03/06 62,824 -- ------------ ------------ 1,457,851 1,044,448 ------------ ------------ OLYMPIC SALES, INC. A boat retailer in Washington state, Oregon, California and British Columbia. 12% Senior Subordinated Note due 2009 (D) $ 1,022,000 08/07/98 1,022,000 204,400 12% Senior Subordinated Note due 2009 (D) $ 307,071 02/09/00 268,283 61,414 ------------ ------------ 1,290,283 265,814 ------------ ------------ ONTARIO DRIVE & GEAR LTD. A manufacturer of all-wheel drive, off-road amphibious vehicles and related accessories. Limited Liability Company Unit (B) 3,667 uts. 01/17/06 572,115 1,398,760 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 619 shs. 01/17/06 170,801 236,160 ------------ ------------ 742,916 1,634,920 ------------ ------------ P A S HOLDCO LLC An independent provider of maintenance, repair and overhaul services to the aerospace gas turbine engine and airframe markets. 14% Senior Subordinated Note due 2014 $ 2,289,725 07/03/06 2,190,569 2,160,840 Preferred Unit (B) 382 uts. 07/03/06 382,150 501,520 Preferred Unit (B) 69 uts. 07/03/06 68,790 90,277 Common Unit Class I (B) 148 uts. 07/03/06 -- 4,731 Common Unit Class L (B) 31 uts. 07/03/06 -- 1,000 ------------ ------------ 2,641,509 2,758,368 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 18 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ P I I HOLDING CORPORATION A manufacturer of plastic film and bags for the general industrial, medical, and food industries. 12% Senior Subordinated Note due 2013 $ 2,295,000 03/31/06 $ 2,174,892 $ 2,223,687 Preferred Stock (B) 36 shs. 03/31/06 329,596 424,810 Common Stock (B) 23 shs. 03/31/06 25,500 23,470 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 13 shs. 03/31/06 11,122 13,652 ------------ ------------ 2,541,110 2,685,619 ------------ ------------ PACIFIC CONSOLIDATED HOLDINGS LLC A manufacturer of rugged, mobile liquid and gaseous oxygen and nitrogen generating systems used in the global defense, oil & gas, and medical sectors. 14% Senior Subordinated Note due 2012 $ 1,331,354 04/27/07 1,238,628 1,236,667 Limited Liability Company Unit (B) 1,754,707 uts. 04/27/07 63,233 -- ------------ ------------ 1,301,861 1,236,667 ------------ ------------ PARADIGM PACKAGING, INC. A manufacturer of plastic bottles and closures for the nutritional, pharmaceutical, personal care, and food packaging markets. 12% Senior Subordinated Note due 2011 $ 2,125,000 12/19/00 2,025,773 2,004,203 Membership Interests of MM/Lincap PPI Investments, Inc., LLC (B) 2.42% int. 12/21/00 265,625 -- ------------ ------------ 2,291,398 2,004,203 ------------ ------------ POSTLE ALUMINUM COMPANY LLC A manufacturer and distributor of aluminum extruded products. 12% Senior Subordinated Note due 2014 $ 2,200,481 10/02/06 2,014,286 550,120 Limited Liability Company Unit 1,384 uts. 10/02/06 510,000 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 8,595 shs. 10/02/06 124,644 -- ------------ ------------ 2,648,930 550,120 ------------ ------------ POWER SERVICES HOLDING COMPANY A provider of industrial motor repair services, predictive and preventative maintenance, and performance improvement consulting, serving the petrochemical, mining, power generation, metals, and paper industries. 12% Senior Subordinated Note due 2016 $ 2,372,093 02/11/08 2,171,028 2,286,066 Limited Partnership Interest (B) 23.70% int. 02/11/08 177,729 93,189 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 1,322 shs. 02/11/08 167,588 232,633 ------------ ------------ 2,516,345 2,611,888 ------------ ------------ PROTEIN GENETICS, INC. A producer of bovine artificial insemination products, related breeding and healthcare products and specialty genetics sold to the dairy and beef industries. 9.8% Redeemable Exchangeable Preferred Stock (B) 1,004 shs. 08/12/94 100,350 -- Common Stock (B) 2,600 shs. * 126,866 -- ------------ ------------ 227,216 -- ------------ ------------ * 08/12/94 and 11/14/01. -------------------------------------------------------------------------------------------------------------------------------- 19 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ QUALIS AUTOMOTIVE LLC A distributor of aftermarket automotive brake and chassis products. 12% Senior Subordinated Note due 2012 $ 1,770,833 05/28/04 $ 1,599,897 $ 1,695,718 Common Stock (B) 354,167 shs. 05/28/04 354,166 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 377,719 shs. 05/28/04 377,719 -- ------------ ------------ 2,331,782 1,695,718 ------------ ------------ R A J MANUFACTURING HOLDINGS LLC A designer and manufacturer of women's swimwear sold under a variety of licensed brand names. 12.5% Senior Subordinated Note due 2014 $ 2,267,190 12/15/06 2,090,363 2,114,717 Limited Liability Company Unit (B) 2,828 uts. 12/15/06 282,810 215,528 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 3 shs. 12/15/06 131,483 101,639 ------------ ------------ 2,504,656 2,431,884 ------------ ------------ R E I DELAWARE HOLDING, INC. An engineer and manufacturer of highly complex, close tolerance components, assemblies, tooling and custom automation equipment primarily for aerospace, medical and defense/radar markets. 12% Senior Subordinated Note due 2016 $ 2,550,000 01/18/08 2,467,911 2,280,269 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 6 shs. 01/18/08 31,089 44,013 ------------ ------------ 2,499,000 2,324,282 ------------ ------------ RADIAC ABRASIVES, INC. A manufacturer of bonded abrasive and super abrasive grinding wheels in the United States. 12% Senior Subordinated Note due 2014 $ 2,260,638 02/10/06 2,127,872 2,224,353 Common Stock (B) 289,362 shs. 02/10/06 289,362 513,179 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 131,555 shs. 02/10/06 119,796 233,311 ------------ ------------ 2,537,030 2,970,843 ------------ ------------ ROYAL BATHS MANUFACTURING COMPANY A manufacturer and distributor of acrylic and cultured marble bathroom products. 12.5% Senior Subordinated Note due 2011 $ 1,062,500 11/14/03 1,007,342 966,523 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 140 shs. 11/14/03 122,946 25,599 ------------ ------------ 1,130,288 992,122 ------------ ------------ SAFETY SPEED CUT MANUFACTURING COMPANY, INC. A manufacturer of vertical panel saws and routers for the wood working industry. Class B Common Stock (B) 1,480 shs. 06/02/99 256,212 740,586 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 20 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ SAVAGE SPORTS HOLDING, INC. A manufacturer of sporting firearms. 12% Senior Subordinated Note due 2012 $ 1,538,793 09/10/04 $ 1,472,432 $ 1,422,243 Common Stock (B) 612 shs. * 642,937 682,483 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 134 shs. 09/10/04 113,578 149,009 ------------ ------------ 2,228,947 2,253,735 ------------ ------------ SENCORE HOLDING COMPANY A designer, manufacturer, and marketer of decoders, receivers and modulators sold to broadcasters, satellite, cable and telecom operators for encoding/decoding analog and digital transmission video signals. 12.5% Senior Subordinated Note due 2014 $ 2,419,231 01/15/09 2,095,664 2,362,376 Common Stock (B) 131 shs. 01/15/09 130,769 124,232 Warrant, exercisable until 2019, to purchase common stock at $.01 per share (B) 282 shs. 01/15/09 281,604 3 ------------ ------------ 2,508,037 2,486,611 ------------ ------------ SMART SOURCE HOLDINGS LLC A short-term computer rental company. 12% Senior Subordinated Note due 2015 $ 2,223,076 ** 2,032,867 2,059,792 Limited Liability Company Unit (B) 619 uts. ** 637,996 712,260 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 157 shs. ** 164,769 180,439 ------------ ------------ 2,835,632 2,952,491 ------------ ------------ SPECIALTY COMMODITIES, INC. A distributor of specialty food ingredients. 13.25% Senior Subordinated Note due 2016 $ 2,262,282 10/23/08 2,118,511 2,193,758 Common Stock (B) 30,000 shs. 10/23/08 300,000 285,000 Warrant, excercisable until 2018, to purchase common stock at $.01 per share (B) 11,054 shs. 10/23/08 100,650 111 ------------ ------------ 2,519,161 2,478,869 ------------ ------------ STANTON CARPET HOLDING CO. A designer and marketer of high and mid-priced decorative carpets and rugs. 12.13% Senior Subordinated Note due 2014 $ 2,239,024 08/01/06 2,121,497 1,928,610 Common Stock (B) 311 shs. 08/01/06 310,976 206,207 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 104 shs. 08/01/06 93,293 68,676 ------------ ------------ 2,525,766 2,203,493 ------------ ------------ * 09/10/04 and 10/05/07. ** 08/31/07 and 03/06/08. -------------------------------------------------------------------------------------------------------------------------------- 21 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ SYNTERACT HOLDINGS CORPORATION A provider of outsourced clinical trial management services to pharmaceutical and biotechnology companies. 14% Senior Subordinated Note due 2016 $ 2,564,901 09/02/08 $ 2,392,577 $ 2,407,129 Redeemable Preferred Stock Series A (B) 1,280 shs. 09/02/08 12,523 13 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 12,803 shs. 09/02/08 112,693 128 ------------ ------------ 2,517,793 2,407,270 ------------ ------------ T H I ACQUISITION, INC. A machine servicing company providing value-added steel services to long steel products. 12% Senior Subordinated Note due 2016 $ 2,550,000 01/14/08 2,410,946 2,330,054 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 9 shs. 01/14/08 88,054 49,835 ------------ ------------ 2,499,000 2,379,889 ------------ ------------ TANGENT RAIL CORPORATION A manufacturer of rail ties and provider of specialty services to the North American railroad industry. 13% Senior Subordinated Note due 2015 $ 2,217,385 10/14/05 1,952,116 2,203,872 Common Stock (B) 2,203 shs. 10/14/05 2,203 693,932 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 1,192 shs. 09/30/08 568,009 375,473 ------------ ------------ 2,522,328 3,273,277 ------------ ------------ TERRA RENEWAL LLC A provider of wastewater residual management and required environmental reporting, permitting, nutrient management planning and record keeping to companies involved in poultry and food processing. 12% Senior Subordinated Note due 2014 $ 1,162,110 * 1,113,636 1,100,497 5.53%Term Note due 2012 (C) $ 706,881 ** 705,481 689,452 4.76% Term Note due 2012 (C) $ 706,881 ** 703,346 689,452 4.7% Term Note due 2012 (C) $ 97,376 ** 97,175 94,976 Limited Partnership Interest of Saw Mill Capital Fund V, LLC (B) 3.97% int. *** 149,259 369,114 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 72 shs. 04/28/06 59,041 59,642 ------------ ------------ 2,827,938 3,003,133 ------------ ------------ TORRENT GROUP HOLDINGS, INC. A contractor specializing in the sales and installation of engineered drywells for the retention and filtration of stormwater and nuisance water flow. 12.5% Senior Subordinated Note due 2013 $ 2,239,024 10/26/07 2,102,363 2,016,713 Series A Preferred Stock (B) 414 shs. 10/26/07 414,051 43,559 ------------ ------------ 2,516,414 2,060,272 ------------ ------------ * 04/28/06 and 09/13/06. ** 04/28/09 and 12/21/06. *** 03/01/05 and 10/10/08. -------------------------------------------------------------------------------------------------------------------------------- 22 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ TOTAL E & S, INC. A manufacturer of a wide variety of equipment used in the oil and gas industry. 10.5% Senior Secured Term Note due 2013 $ 851,351 03/02/07 $ 838,581 $ 817,022 13% Senior Subordinated Note due 2014 $ 598,450 03/02/07 490,608 560,927 Common Stock (B) 125,199 shs. 03/02/07 125,199 156,565 Warrant, exercisable until 2014 to purchase common stock at $.01 per share (B) 34,533 shs. 03/02/07 95,873 43,185 ------------ ------------ 1,550,261 1,577,699 ------------ ------------ TRANSPAC HOLDING COMPANY A designer, importer, and wholesaler of home decor and seasonal gift products. 12% Senior Subordinated Note due 2015 $ 1,773,006 10/31/07 1,659,362 1,507,055 Common Stock (B) 209 shs. 10/31/07 208,589 -- Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 94 shs. 10/31/07 87,607 -- ------------ ------------ 1,955,558 1,507,055 ------------ ------------ TRANSTAR HOLDING COMPANY A distributor of aftermarket automotive transmission parts. 12% Senior Subordinated Note due 2014 $ 1,734,000 08/31/05 1,676,739 1,600,649 Common Stock (B) 1,078 shs. * 1,078,450 522,656 Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 86 shs. 08/31/05 77,485 41,650 ------------ ------------ 2,832,674 2,164,955 ------------ ------------ TRANZONIC COMPANIES (THE) A producer of commercial and industrial supplies, such as safety products, janitorial supplies, work apparel, washroom and restroom supplies and sanitary care products. 13% Senior Subordinated Note due 2010 $ 2,712,000 02/05/98 2,627,474 2,675,679 Common Stock (B) 630 shs. 02/04/98 630,000 457,537 Warrant, exercisable until 2009, to purchase common stock at $.01 per share (B) 444 shs. 02/05/98 368,832 322,455 ------------ ------------ 3,626,306 3,455,671 ------------ ------------ * 08/31/05 and 04/30/07. -------------------------------------------------------------------------------------------------------------------------------- 23 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ TRUCK BODIES & EQUIPMENT INTERNATIONAL A designer and manufacturer of accessories for heavy and medium duty trucks, primarily dump bodies, hoists, various forms of flatbed bodies, landscape bodies and other accessories. 16% Senior Subordinated Note due 2010 (D) $ 2,309,541 * $ 2,141,949 $ 577,385 16% PIK Note due 2010 $ 416,980 12/30/08 161,677 104,245 Preferred Stock Series B (B) 241 shs. 10/20/08 241,172 Common Stock (B) 742 shs. * 800,860 -- Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 153 shs. * 159,894 -- Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 1,054 shs. 10/20/08 -- -- ------------ ------------ 3,505,552 681,630 ------------ ------------ TRUSTILE DOORS, INC. A manufacturer and distributor of interior doors. Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 5,781 shs. 04/11/03 68,059 279,417 ------------ ------------ U M A ENTERPRISES, INC. An importer and wholesaler of home decor products. 15% Senior Subordinated Note due 2015 $ 1,721,067 02/08/08 1,684,158 1,543,286 Convertible Preferred Stock (B) 887 shs. 02/08/08 886,956 180,379 ------------ ------------ 2,571,114 1,723,665 ------------ ------------ U-LINE CORPORATION A manufacturer of high-end, built-in, undercounter ice making, wine storage and refrigeration appliances. 12.5% Senior Subordinated Note due 2012 $ 1,882,100 04/30/04 1,767,452 1,752,737 Common Stock (B) 182 shs. 04/30/04 182,200 83,262 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 230 shs. 04/30/04 211,736 105,297 ------------ ------------ 2,161,388 1,941,296 ------------ ------------ VISIONEERING, INC. A designer and manufacturer of tooling and fixtures for the aerospace industry. 10.5% Senior Secured Term Loan due 2013 $ 802,941 05/17/07 790,897 787,963 13% Senior Subordinated Note due 2014 $ 648,530 05/17/07 589,680 628,425 18% PIK Convertable Preferred Stock (B) 37,381 shs. 03/13/09 72,519 68,893 Common Stock (B) 123,529 shs. 05/17/07 123,529 120,017 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 35,006 shs. 05/17/07 55,055 34,011 ------------ ------------ 1,631,680 1,639,309 ------------ ------------ * 07/19/05 and 12/22/05. -------------------------------------------------------------------------------------------------------------------------------- 24 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ VITALITY FOODSERVICE, INC. A non-carbonated beverage dispensing company focused on the foodservice industry. 13% Senior Subordinated Note due 2011 $ 1,887,288 09/24/04 $ 1,797,557 $ 1,747,030 Common Stock (B) 26,456 shs. * 264,558 226,666 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 23,787 shs. 09/24/04 186,883 203,798 ------------ ------------ 2,248,998 2,177,494 ------------ ------------ VITEX PACKAGING GROUP, INC. A manufacturer of specialty packaging, primarily envelopes and tags used on tea bags. 12.5% Senior Subordinated Note due 2012 (D) $ 1,700,000 07/19/04 1,483,065 -- 14.5% PIK Note due 2010 $ 546,244 06/30/07 374,902 -- Limited Liability Company Unit Class A (B) 414,375 uts. 07/19/04 414,375 -- Limited Liability Company Unit Class B (B) 182,935 uts. 07/19/04 182,935 -- ------------ ------------ 2,455,277 -- ------------ ------------ WAGGIN' TRAIN HOLDINGS LLC A producer of premium quality meat dog treats. 14% Senior Subordinated Note due 2014 $ 2,186,640 11/15/07 2,140,488 1,966,388 Limited Liability Company Unit Class B (B) 423 uts. 11/15/07 422,652 364,020 Limited Liability Company Unit Class C (B) 423 uts. 11/15/07 -- 364,020 ------------ ------------ 2,563,140 2,694,428 ------------ ------------ WALLS INDUSTRIES, INC. A provider of branded workwear and sporting goods apparel. Limited Partnership Interest (B) 0.40% int. 07/12/04 3,728 -- Common Stock (B) 4,028 shs. 12/21/07 -- -- ------------ ------------ 3,728 -- ------------ ------------ WELLBORN FOREST HOLDING CO. A manufacturer of semi-custom kitchen and bath cabinetry. 12.13% Senior Subordinated Note due 2014 $ 1,721,250 11/30/06 1,616,922 1,463,063 Common Stock (B) 191 shs. 11/30/06 191,250 38,343 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 95 shs. 11/30/06 86,493 19,143 ------------ ------------ 1,894,665 1,520,549 ------------ ------------ WORKPLACE MEDIA HOLDING CO. A direct marketer specializing in providing advertisers with access to consumers in the workplace. 13% Senior Subordinated Note due 2015 $ 1,159,196 05/14/07 1,064,103 975,024 Limited Partnership Interest (B) 23.16% int. 05/14/07 115,804 -- Warrant, exercisable until 2015, to purchase common stock at $.02 per share (B) 88 shs. 05/14/07 83,462 -- ------------ ------------ 1,263,369 975,024 ------------ ------------ * 09/24/04 and 12/22/06. -------------------------------------------------------------------------------------------------------------------------------- 25 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ XALOY SUPERIOR HOLDINGS, INC. A provider of melt processing components and ancillary equipment for both plastic injection molding and extrusion applications. 15% Senior Subordinated Note due 2015 $ 2,305,362 09/08/08 $ 2,256,683 $ 2,018,036 Common Stock (B) 283 shs. 09/08/08 283,331 226,661 ------------ ------------ 2,540,014 2,244,697 ------------ ------------ TOTAL PRIVATE PLACEMENT INVESTMENTS (E) 205,704,537 172,150,328 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 26 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Shares or Interest Due Principal CORPORATE RESTRICTED SECURITIES:(A)(Continued) Rate Date Amount Cost Fair Value ------- -------- ------------ ------------ ------------ RULE 144A SECURITIES - 3.79%: BONDS - 3.78% American Tire Distributor (C) 7.685% 04/01/12 $ 1,000,000 $ 950,000 $ 700,000 Cenveo Corporation 10.500 08/15/16 100,000 100,000 56,125 Charter Communications Op LLC 8.000 04/30/12 1,350,000 1,152,250 1,235,250 Compucom Systems, Inc. 12.500 10/01/15 1,330,000 1,289,649 811,300 Douglas Dynamics LLC 7.750 01/15/12 1,010,000 954,959 656,500 Forest Oil Corporation 8.500 02/15/14 100,000 95,242 92,750 G F S I, Inc. (C) 10.500 06/01/11 715,000 685,658 527,313 General Motors Acceptance Corporation 7.750 01/19/10 815,000 733,174 684,698 H C A, Inc. 9.875 02/15/17 35,000 33,846 33,075 Intergen NV 9.000 06/30/17 750,000 743,918 678,750 Packaging Dynamics Corporation of America 10.000 05/01/16 1,200,000 1,195,090 507,000 SandRidge Energy, Inc. 8.000 06/01/18 360,000 364,307 264,600 Ticketmaster Entertainment, Inc. 10.750 08/01/16 500,000 500,000 340,000 Tunica-Biloxi Gaming Authority 9.000 11/15/15 1,075,000 1,101,860 870,750 Tyson Foods, Inc. 10.500 03/01/14 70,000 64,973 71,400 Videotron, Ltd. 9.125 04/15/18 40,000 39,373 40,650 ------------ ------------ TOTAL BONDS 10,004,299 7,570,161 ------------ ------------ CONVERTIBLE PREFERRED STOCK - 0.00% ETEX Corporation (B) 777 716 -- ------------ ------------ TOTAL CONVERTIBLE PREFERRED STOCK 716 -- ------------ ------------ PREFERRED STOCK - 0.01% Preferred Blocker, Inc. 143 45,009 28,470 TherOX, Inc. (B) 103 4,131 -- ------------ ------------ TOTAL PREFERRED STOCK 49,140 28,470 ------------ ------------ COMMON STOCK - 0.00% Touchstone Health Partnership (B) 1,168 4,254 -- ------------ ------------ TOTAL COMMON STOCK 4,254 -- ------------ ------------ TOTAL RULE 144A SECURITIES 10,058,409 7,598,631 ------------ ------------ TOTAL CORPORATE RESTRICTED SECURITIES $215,762,946 $179,748,959 ------------ ------------ ---------------------------------------------------------------------------------------------------------------- 27 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Interest Due Principal Market CORPORATE PUBLIC SECURITIES - 20.44%: (A) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ BONDS - 19.45% A M C Entertainment, Inc. 11.000% 02/01/16 $ 1,315,000 $ 1,321,802 $ 1,196,650 Activant Solutions, Inc. 9.500 05/01/16 150,000 150,000 91,875 Appleton Papers, Inc. 8.125 06/15/11 300,000 300,000 180,750 Aramark Corporation (C) 4.670 02/01/15 200,000 200,000 152,500 Aramark Corporation 8.500 02/01/15 500,000 502,304 460,000 Bally Total Fitness Holdings Corporation (D)(F) 14.000 10/01/13 104,062 74,053 -- Basic Energy Services 7.125 04/15/16 225,000 225,000 130,500 Berry Plastics Corporation (C) 5.844 02/15/15 500,000 474,304 362,500 Brigham Exploration Co. 9.625 05/01/14 1,200,000 1,167,903 366,000 Cablevision Systems Corporation 8.000 04/15/12 1,000,000 1,008,467 972,500 Cenveo Corporation 7.875 12/01/13 1,300,000 1,192,500 676,000 Chaparral Energy, Inc. 8.875 02/01/17 1,500,000 1,491,780 517,500 Cincinnati Bell, Inc. 7.000 02/15/15 1,100,000 789,250 1,012,000 Community Health Systems, Inc. (C) 8.875 07/15/15 1,200,000 1,169,415 1,134,000 Denbury Resources, Inc. 9.750 03/01/16 50,000 46,450 48,250 Dynegy Holdings, Inc. 7.750 06/01/19 830,000 564,400 539,500 El Paso Corporation 12.000 12/12/13 55,000 49,159 58,300 Enterprise Products Operating Co. 9.750 01/31/14 750,000 750,000 824,102 Ford Motor Credit Co. 7.375 10/28/09 500,000 498,750 448,425 Gencorp, Inc. 9.500 08/15/13 259,000 259,000 186,480 Goodyear Tire & Rubber Co. 7.857 08/15/11 1,150,000 1,097,750 943,000 Graham Packaging Corporation 8.500 10/15/12 280,000 268,800 214,900 Great Lakes Dredge & Dock Corporation 7.750 12/15/13 1,000,000 948,750 800,000 H C A, Inc. 9.125 11/15/14 1,125,000 919,688 1,057,500 Hawker Beechcraft Acquisition Co. 9.750 04/01/17 1,000,000 1,009,128 170,000 Hughes Network Systems 9.500 04/15/14 1,325,000 1,345,980 1,185,875 Inergy LP 8.250 03/01/16 470,000 480,923 446,500 Intelsat Bermuda Ltd. 9.250 06/15/16 1,365,000 1,411,591 1,105,650 Interline Brands, Inc. 8.125 06/15/14 1,300,000 1,291,107 1,163,500 Kar Holdings, Inc. 8.750 05/01/14 50,000 50,000 26,500 L-3 Communications Holdings, Inc. 6.125 07/15/13 1,000,000 995,000 960,000 Leucadia National Corporation 7.000 08/15/13 450,000 450,763 369,000 Liberty Media Corporation 5.700 05/15/13 1,000,000 951,610 742,344 Manitowoc Company, Inc. 7.125 11/01/13 200,000 200,000 140,000 Markwest Energy Operating Co. 6.875 11/01/14 950,000 930,563 669,750 Markwest Energy Operating Co. 8.750 04/15/18 125,000 123,979 87,188 Mediacom Broadband LLC 9.500 01/15/13 1,250,000 975,000 1,168,750 ---------------------------------------------------------------------------------------------------------------- 28 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Interest Due Principal Market CORPORATE PUBLIC SECURITIES:(A)(Continued) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ N R G Energy, Inc. 7.375% 02/01/16 $ 175,000 $ 175,000 $ 162,750 Newark Group, Inc. 9.750 03/15/14 850,000 796,863 74,375 Nortek, Inc. 10.000 12/01/13 175,000 173,175 73,063 North American Energy Partners 8.750 12/01/11 1,165,000 1,172,843 850,450 O E D Corp./Diamond Jo Company Guarantee 8.750 04/15/12 1,000,000 985,960 800,000 Pliant Corporation 11.125 09/01/09 550,000 539,000 17,875 Pliant Corporation (C) 11.850 06/15/09 1,111,500 1,081,740 445,989 Polypore, Inc. 8.750 05/15/12 1,460,000 1,410,050 1,065,800 Pregis Corporation 12.375 10/15/13 1,000,000 981,490 442,500 Quebecor Media, Inc. 7.750 03/15/16 1,050,000 978,235 798,000 Rental Service Corporation 9.500 12/01/14 500,000 484,320 245,000 Rock-Tenn Co. 9.250 03/15/16 1,075,000 1,114,541 1,072,313 Scholastic Corporation 5.000 04/15/13 1,500,000 1,278,750 1,158,750 Seneca Gaming Corporation 7.250 05/01/12 500,000 477,500 319,375 Shaw Communications, Inc. 7.250 04/06/11 400,000 410,448 397,000 Sheridan Acquisition Corporation 10.250 08/15/11 375,000 370,001 219,375 Stanadyne Corporation 10.000 08/15/14 1,500,000 1,500,000 967,500 Stewart & Stevenson LLC 10.000 07/15/14 1,465,000 1,496,311 1,106,075 T X U Energy Company LLC 10.250 11/01/15 1,250,000 1,261,453 625,000 Tekni-Plex, Inc. 8.750 11/15/13 650,000 654,382 318,500 Tenneco, Inc. 8.125 11/15/15 1,100,000 540,000 220,000 Texas Industries, Inc. 7.250 07/15/13 70,000 70,000 52,850 Time Warner Telecom Holdings 9.250 02/15/14 1,000,000 1,008,635 965,000 Titan International, Inc. 8.000 01/15/12 1,070,000 1,062,100 834,600 Transdigm, Inc. 7.750 07/15/14 500,000 503,360 466,250 Trimas Corporation 9.875 06/15/12 1,073,000 982,375 525,770 Tube City IMS Corporation 9.750 02/01/15 1,500,000 1,484,568 228,750 United Components, Inc. 9.375 06/15/13 1,080,000 1,080,466 421,200 United Rentals, Inc. 6.500 02/15/12 1,125,000 815,625 900,000 Virgin Media Finance PLC 9.125 08/15/16 1,380,000 1,413,332 1,283,400 Vought Aircraft Industries 8.000 07/15/11 1,150,000 1,115,399 448,500 Waste Services, Inc. 9.500 04/15/14 1,100,000 1,118,341 827,749 ------------ ------------ TOTAL BONDS 54,221,432 38,942,048 ------------ ------------ ---------------------------------------------------------------------------------------------------------------- 29 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Shares or Interest Due Principal Market CORPORATE PUBLIC SECURITIES:(A)(Continued) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ COMMON STOCK - 0.88% Chase Packaging Corporation (B) $ 9,541 $ -- $ 954 CKX, Inc. (B) 97,500 784,875 399,750 Directed Electronics, Inc. (B) 368,560 1,856,534 36,856 El Paso Corporation (B) 65,000 808,362 406,250 EnerNOC, Inc. (B) 46,500 1,283,262 676,110 ITC^DeltaCom, Inc. (B) 178,666 1,563,328 121,493 Intrepid Potash, Inc. (B) 365 11,680 6,734 Supreme Industries, Inc. 125,116 267,319 112,604 ------------ ------------ TOTAL COMMON STOCK 6,575,360 1,760,751 ------------ ------------ CONVERTIBLE BONDS - 0.11% Citadel Broadcasting Corporation 4.000% 02/15/11 583,000 452,554 228,828 ------------ ------------ TOTAL CONVERTIBLE BONDS 452,554 228,828 ------------ ------------ TOTAL CORPORATE PUBLIC SECURITIES $ 61,249,346 $ 40,931,627 ------------ ------------ Interest Due Principal Market SHORT-TERM SECURITIES: Rate/Yield^ Date Amount Cost Value ------- -------- ------------ ------------ ------------ COMMERCIAL PAPER - 1.00% Pearson Holdings, Inc. 0.750% 04/07/09 $ 2,000,000 $ 1,999,750 $ 1,999,750 ------------ ------------ TOTAL SHORT-TERM SECURITIES $ 1,999,750 $ 1,999,750 ------------ ------------ TOTAL INVESTMENTS 111.20% $279,012,042 $222,680,336 ============ ------------ Other Assets 4.28 8,575,902 Liabilities (15.48) (31,010,739) ------ ------------ TOTAL NET ASSETS 100.00% $200,245,499 ====== ============ (A) In each of the convertible note, warrant, convertible preferred and common stock investments, the issuer has agreed to provide certain registration rights. (B) Non-income producing security. (C) Variable rate security; rate indicated is as of 03/31/09. (D) Defaulted security; interest not accrued. (E) Illiquid securities. At March 31, 2009, the value of these securities amounted to $172,150,328 or 85.97% of net assets. (F) Security valued at fair value using methods determined in good faith by or under the direction of the Board of Trustees. ^ Effective yield at purchase PIK - Payment-in-kind ---------------------------------------------------------------------------------------------------------------- 30 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- AEROSPACE - 3.82% BROADCASTING & ENTERTAINMENT - 3.70% Gencorp, Inc. $ 186,480 Cablevision Systems Corporation $ 972,500 Hughes Network Systems 1,185,875 Charter Communications Op LLC 1,235,250 L-3 Communications Holdings, Inc. 960,000 Citadel Broadcasting Corporation 228,828 P A S Holdco LLC 2,758,368 CKX, Inc. 399,750 Transdigm, Inc. 466,250 Liberty Media Corporation 742,344 Visioneering, Inc. 1,639,309 Mediacom Broadband LLC 1,168,750 Vought Aircraft Industries 448,500 Shaw Communications, Inc. 397,000 -------------- Virgin Media Finance PLC 1,283,400 7,644,782 Workplace Media Holding Co. 975,024 -------------- -------------- AUTOMOBILE - 5.08% 7,402,846 American Tire Distributor 700,000 -------------- Fuel Systems Holding Corporation -- BUILDINGS & REAL ESTATE - 1.10% Goodyear Tire & Rubber Co. 943,000 K W P I Holdings Corporation 1,861,361 Jason, Inc. 940,989 Texas Industries, Inc. 52,850 Nyloncraft, Inc. 609,375 TruStile Doors, Inc. 279,417 Ontario Drive & Gear Ltd. 1,634,920 -------------- Qualis Automotive LLC 1,695,718 2,193,628 Tenneco, Inc. 220,000 -------------- Titan International, Inc. 834,600 CHEMICAL, PLASTICS & RUBBER - 0.14% Transtar Holding Company 2,164,955 Capital Specialty Plastics, Inc. 279,466 United Components, Inc. 421,200 -------------- -------------- CONSUMER PRODUCTS - 7.88% 10,164,757 Aero Holdings, Inc. 3,462,191 -------------- Bravo Sports Holding Corporation 2,068,513 BEVERAGE, DRUG & FOOD - 4.63% G F S I, Inc. 527,313 Aramark Corporation 612,500 K N B Holdings Corporation 2,313,304 Golden County Foods Holding, Inc. 1,638,974 Kar Holdings, Inc. 26,500 Hospitality Mints Holding Company 2,356,587 Momentum Holding Co. 507,430 Specialty Commodities, Inc. 2,478,869 R A J Manufacturing Holdings LLC 2,431,884 Vitality Foodservice, Inc. 2,177,494 Royal Baths Manufacturing Company 992,122 -------------- The Tranzonic Companies 3,455,671 9,264,424 Walls Industries, Inc. -- -------------- -------------- 15,784,928 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 31 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION:(Continued) Market Value Market Value -------------- -------------- CONTAINERS, PACKAGING & GLASS - 4.15% DIVERSIFIED/CONGLOMERATE, SERVICE - 8.69% Berry Plastics Corporation $ 362,500 A W X Holdings Corporation $ 1,422,207 Chase Packaging Corporation 954 Advanced Technologies Holdings 2,607,920 Flutes, Inc. 688,789 CapeSuccess LLC -- Graham Packaging Corporation 214,900 Clough, Harbour, and Associates 2,614,367 Maverick Acquisition Company 629,046 Crane Rental Corporation 2,447,667 P I I Holding Corporation 2,685,619 Diversco, Inc./DHI Holdings, Inc. 1,319,430 Packaging Dynamics Corporation of America 507,000 Dwyer Group, Inc. 1,481,591 Paradigm Packaging, Inc. 2,004,203 Fowler Holding, Inc. -- Pliant Corporation 463,864 GQ Holdings LLC -- Pregis Corporation 442,500 Insurance Claims Management, Inc. 131,752 Tekni-Plex, Inc. 318,500 Interline Brands, Inc. 1,163,500 Vitex Packaging Group, Inc. -- Mail Communications Group, Inc. 1,353,211 -------------- Nesco Holdings Corporation 2,827,597 8,317,875 Videotron, Ltd. 40,650 -------------- -------------- DISTRIBUTION - 1.92% 17,409,892 Duncan Systems, Inc. 1,435,364 -------------- F C X Holdings Corporation 2,415,216 ELECTRONICS - 1.07% -------------- Connecticut Electric, Inc. 2,097,928 3,850,580 Directed Electronics, Inc. 36,856 -------------- -------------- DIVERSIFIED/CONGLOMERATE, 2,134,784 MANUFACTURING - 11.58% -------------- A H C Holding Company, Inc. 2,444,555 FARMING & AGRICULTURE - 1.38% Activant Solutions, Inc. 91,875 Protein Genetics, Inc. -- Arrow Tru-Line Holdings, Inc. 1,471,232 Tyson Foods, Inc. 71,400 C D N T, Inc. 1,367,562 Waggin' Train Holdings LLC 2,694,428 Douglas Dynamics LLC 656,500 -------------- Evans Consoles, Inc. 1,271,148 2,765,828 Great Lakes Dredge & Dock Corporation 800,000 -------------- K P I Holdings, Inc. 2,123,155 FINANCIAL SERVICES - 0.85% MEGTEC Holdings, Inc. 2,349,722 Ford Motor Credit Co. 448,425 Milwaukee Gear Company 2,503,771 General Motors Acceptance Corporation 684,698 Nortek, Inc. 73,063 Hawker Beechcraft Acquisition Co. 170,000 Polypore, Inc. 1,065,800 Highgate Capital LLC -- Postle Aluminum Company LLC 550,120 Leucadia National Corporation 369,000 Radiac Abrasives, Inc. 2,970,843 Preferred Blocker, Inc. 28,470 Trimas Corporation 525,770 -------------- Truck Bodies & Equipment International 681,630 1,700,593 Xaloy Superior Holdings, Inc. 2,244,697 -------------- -------------- 23,191,443 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 32 MassMutual Corporate Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- HEALTHCARE, EDUCATION & CHILDCARE - 6.74% MACHINERY - 10.72% A T I Acquisition Company $ 3,558,826 A S A P Industries LLC $ 1,255,903 American Hospice Management Holding LLC 3,504,886 Davis-Standard LLC 3,217,371 Community Health Systems, Inc. 1,134,000 E S P Holdco, Inc. 2,242,991 F H S Holdings LLC 1,792,969 Integration Technology Systems, Inc. -- H C A, Inc. 1,090,575 K-Tek Holdings Corporation 2,448,810 Synteract Holdings Corporation 2,407,270 M V I Holding, Inc. 1,211,541 Touchstone Health Partnership -- Manitowoc Company, Inc. 140,000 -------------- Morton Industrial Group, Inc. 244,091 13,488,526 Navis Global 320,453 -------------- NetShape Technologies, Inc. 1,292,895 HOME & OFFICE FURNISHINGS, HOUSEWARES, Pacific Consolidated Holdings LLC 1,236,667 AND DURABLE CONSUMER PRODUCTS - 10.11% Power Services Holding Company 2,611,888 Connor Sport Court International, Inc. 2,357,724 R E I Delaware Holding, Inc. 2,324,282 H M Holding Company -- Safety Speed Cut Manufacturing Company, Inc. 740,586 Home Decor Holding Company 2,081,225 Stanadyne Corporation 967,500 Justrite Manufacturing Acquisition Co. 1,782,483 Stewart & Stevenson LLC 1,106,075 K H O F Holdings, Inc. 2,412,750 Supreme Industries, Inc. 112,604 Monessen Holding Corporation 2,713,505 -------------- Stanton Carpet Holding Co. 2,203,493 21,473,657 Transpac Holdings Company 1,507,055 -------------- U M A Enterprises, Inc. 1,723,665 MEDICAL DEVICES/BIOTECH - 3.72% U-Line Corporation 1,941,296 Coeur, Inc. 1,204,850 Wellborn Forest Holding Co. 1,520,549 E X C Acquisition Corporation 211,487 -------------- ETEX Corporation -- 20,243,745 MedSystems Holdings LLC 1,227,082 -------------- MicroGroup, Inc. 3,754,844 LEISURE, AMUSEMENT, ENTERTAINMENT - 2.94% OakRiver Technology, Inc. 1,044,448 A M C Entertainment, Inc. 1,196,650 -------------- Bally Total Fitness Holding Corporation -- 7,442,711 Electra Bicycle Company LLC 107,248 -------------- O E D Corp/Diamond Jo Company Guarantee 800,000 MINING, STEEL, IRON & NON PRECIOUS Savage Sports Holding, Inc. 2,253,735 METALS - 1.30% Seneca Gaming Corporation 319,375 T H I Acquisition, Inc. 2,379,889 Ticketmaster Entertainment, Inc. 340,000 Tube City IMS Corporation 228,750 Tunica-Biloxi Gaming Authority 870,750 -------------- -------------- 2,608,639 5,887,758 -------------- -------------- NATURAL RESOURCES - 1.13% Appleton Papers, Inc. 180,750 Cenveo Corporation 732,125 Intrepid Potash, Inc. 6,734 Rock-Tenn Co. 1,072,313 SandRidge Energy, Inc. 264,600 -------------- 2,256,522 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 33 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) March 31, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- OIL & GAS - 2.20% TRANSPORTATION - 1.84% Basic Energy Services $ 130,500 NABCO, Inc. $ 407,710 Brigham Exploration Co. 366,000 Tangent Rail Corporation 3,273,277 Chaparral Energy, Inc. 517,500 -------------- Denbury Resources, Inc. 48,250 3,680,987 Enterprise Products Operating Co. 824,102 -------------- Forest Oil Corporation 92,750 UTILITIES - 1.82% North American Energy Partners 850,450 Dynegy Holdings, Inc. 539,500 Total E & S, Inc. 1,577,699 El Paso Corporation 464,550 -------------- Inergy LP 446,500 4,407,251 Intergen NV 678,750 -------------- Markwest Energy Operating Co. 756,938 PHARMACEUTICALS - 1.27% N R G Energy, Inc. 162,750 CorePharma LLC 2,534,291 T X U Energy Company LLC 625,000 -------------- -------------- PUBLISHING/PRINTING - 1.12% 3,673,988 Newark Group, Inc. 74,375 -------------- Quebecor Media, Inc. 798,000 WASTE MANAGEMENT / POLLUTION - 2.94% Scholastic Corporation 1,158,750 Terra Renewal LLC 3,003,133 Sheridan Acquisition Corporation 219,375 Torrent Group Holdings, Inc. 2,060,272 -------------- Waste Services, Inc. 827,749 2,250,500 -------------- -------------- 5,891,154 RETAIL STORES - 0.70% -------------- Olympic Sales, Inc. 265,814 Rental Service Corporation 245,000 United Rentals, Inc. 900,000 TOTAL CORPORATE RESTRICTED AND -------------- PUBLIC SECURITIES - 110.20% $ 220,680,586 1,410,814 ============== -------------- TECHNOLOGY - 3.46% Compucom Systems, Inc. 811,300 EnerNOC, Inc. 676,110 Sencore Holding Company 2,486,611 Smart Source Holdings LLC 2,952,491 -------------- 6,926,512 -------------- TELECOMMUNICATIONS - 2.20% All Current Holding Company 1,193,562 Cincinnati Bell, Inc. 1,012,000 Intelsat Bermuda Ltd. 1,105,650 ITC^DeltaCom, Inc. 121,493 Time Warner Telecom Holdings 965,000 -------------- 4,397,705 -------------- See Notes to Consolidated Financial Statements ------------------------------------------------------------------------------------------------------------------------------------ 34 INCOME TAX INFORMATION The aggregate cost of investments is substantially the same for financial reporting and federal income tax purposes as of March 31, 2009. The net unrealized depreciation of investments for financial reporting and federal tax purposes as of March 31, 2009 is $56,331,706 and consists of $14,202,706 appreciation and $70,534,412 depreciation. FAIR VALUE MEASUREMENTS Effective January 1, 2008, the Trust adopted FASB Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" ("FAS 157"). FAS 157 clarifies the definition of fair value, establishes a framework for measuring fair values and requires additional disclosures about the use of fair value measurements. FAS 157 requires companies to provide expanded information about the assets and liabilities measured at fair value and the potential effect of these fair valuations on an entity's financial performance. Various inputs are used in determining the value of the Trust's investments. Using the hierarchy established under FAS 157, these inputs are summarized in the three broad levels listed below: Level 1: quoted prices in active markets for identical securities Level 2: other significant observable inputs (including quoted prices for similar securities, interest rates, prepayments speeds, credit risk, etc.) Level 3: significant unobservable inputs (including the Trust's own assumptions in determining the fair value of investments) The inputs and methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. The following is a summary of the inputs used to value the Trust's net assets as of March 31, 2009: ASSETS TOTAL LEVEL 1 LEVEL 2 LEVEL 3 ----------------------------------------------------------------------------- Restricted Securities $179,748,959 $ -- $ 7,598,631 $172,150,328 Public Securities 40,931,627 1,760,751 39,170,876 -- Short-term Securities 1,999,750 -- 1,999,750 -- ----------------------------------------------------------------------------- TOTAL $222,680,336 $1,760,751 $48,769,257 $172,150,328 Following is a reconciliation of Level 3 assets for which significant unobservable inputs were used to determine fair value: RESTRICTED PUBLIC SHORT-TERM ASSETS SECURITIES SECURITIES SECURITIES TOTAL ----------------------------------------------------------------------------- Beginning balance at 12/31/2008 $182,799,290 $ 260 $ -- $182,799,550 Total gains or losses (realized/unrealized) included in earnings* (14,131,613) (260) -- (14,131,873) Purchases, sales, issuances & settlements (net) 3,482,651 -- -- 3,482,651 Transfers in and / or out of Level 3 -- -- -- -- ----------------------------------------------------------------------------- ENDING BALANCE AT 3/31/09 $172,150,328 $ -- $ -- $172,150,328 * The amount of net losses for the period included in earnings attributable to the change in unrealized gains or losses relating to Level 3 assets still held at 3/31/09 is $(14,647,114). ITEM 2. CONTROLS AND PROCEDURES. (a) The principal executive officer and principal financial officer of the Registrant evaluated the effectiveness of the Registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act") as of a date within 90 days of the filing date of this report and based on that evaluation have concluded that such disclosure controls and procedures are effective to provide reasonable assurance that material information required to be disclosed by the Registrant on Form N-Q is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (b) There were no changes in the Registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the Registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting. ITEM 3. EXHIBITS. Certifications pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) are attached hereto as an exhibit. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) MassMutual Corporate Investors ------------------------------ By (Signature and Title)* /s/ Michael L. Klofas --------------------------------------------- Michael L. Klofas, President Date May 29, 2009 ------------------------------------------------------------------ Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ Michael L. Klofas --------------------------------------------- Michael L. Klofas, President Date May 29, 2009 ------------------------------------------------------------------ By (Signature and Title)* /s/ James M. Roy --------------------------------------------- James M. Roy, Vice President and Chief Financial Officer Date May 29, 2009 ------------------------------------------------------------------ * PRINT THE NAME AND TITLE OF EACH SIGNING OFFICER UNDER HIS OR HER SIGNATURE.