================================================================================ 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 811-05531 MassMutual Participation 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: 09/30/09 ___________________ ================================================================================ MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES - 90.13%:(A) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ CORPORATE RESTRICTED SECURITIES - 89.99%: (A) PRIVATE PLACEMENT INVESTMENTS - 85.66% 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 $ 1,302,382 11/21/07 $ 1,274,945 $ 1,328,430 Limited Partnership Interest (B) 12.26% int. 11/21/07 119,009 113,278 ------------ ------------ 1,393,954 1,441,708 ------------ ------------ 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 $ 600,667 12/31/08 521,754 618,687 Limited Liability Company Unit Class A-2 (B) 677 uts. 12/31/08 74,333 70,616 Limited Liability Company Unit Class A-3 (B) 608 uts. 12/31/08 66,899 6 ------------ ------------ 662,986 689,309 ------------ ------------ A T I ACQUISITION COMPANY A for-profit post-secondary school serving students in Texas, Florida and Arizona. 12% Senior Subordinated Note due 2012 $ 1,125,000 04/08/04 1,125,000 1,125,000 Warrant, exercisable until 2012, to purchase preferred stock at $.01 per share (B) 7 shs. 11/16/07 -- 12,801 Warrant, exercisable until 2012, to purchase common stock at $.02 per share (B) 1,230 shs. 04/08/04 -- 1,519,992 ------------ ------------ 1,125,000 2,657,793 ------------ ------------ 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 $ 420,000 05/15/08 411,600 396,235 13% Senior Subordinated Note due 2015 $ 420,000 05/15/08 380,633 386,509 Common Stock (B) 60,000 shs. 05/15/08 60,000 -- Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 21,099 shs. 05/15/08 35,654 -- ------------ ------------ 887,887 782,744 ------------ ------------ ADVANCED TECHNOLOGIES HOLDINGS A provider of factory maintenance services to industrial companies. 15% Senior Subordinated Note due 2013 $ 1,138,368 12/27/07 1,115,662 1,161,136 Preferred Stock (B) 546 shs. 12/27/07 270,000 250,018 ------------ ------------ 1,385,662 1,411,154 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 7 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 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 $ 930,000 03/09/07 $ 916,050 $ 958,419 14% Senior Subordinated Note due 2015 $ 720,000 03/09/07 656,294 727,200 Common Stock (B) 150,000 shs. 03/09/07 150,000 153,556 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 37,780 shs. 03/09/07 63,730 38,676 ------------ ------------ 1,786,074 1,877,851 ------------ ------------ ALL CURRENT HOLDING COMPANY A specialty re-seller of essential electrical parts and components primarily serving wholesale distributors. 12% Senior Subordinated Note due 2015 $ 603,697 09/26/08 552,444 615,475 Common Stock (B) 713 shs. 09/26/08 71,303 70,507 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 507 shs. 09/26/08 46,584 50,136 ------------ ------------ 670,331 736,118 ------------ ------------ AMERICAN HOSPICE MANAGEMENT HOLDING LLC A for-profit hospice care provider in the United States. 12% Senior Subordinated Note due 2013 $ 1,687,503 * 1,606,040 1,687,503 Preferred Class A Unit (B) 1,706 uts. ** 170,600 264,086 Preferred Class B Unit (B) 808 uts. 06/09/08 80,789 97,087 Common Class B Unit (B) 16,100 uts. 01/22/04 1 9,347 Common Class D Unit (B) 3,690 uts. 09/12/06 -- 2,142 ------------ ------------ 1,857,430 2,060,165 ------------ ------------ APEX ANALYTIX HOLDING CORP. A provider of audit recovery and fraud detection services and software to commercial and retail businesses in the U.S. and Europe. 12.5% Senior Subordinated Note due 2016 $ 1,012,500 04/28/09 835,326 1,042,875 Preferred Stock Series B (B) 1.623 shs. 04/28/09 162,269 16 Common Stock (B) 723 shs. 04/28/09 723 7 ------------ ------------ 998,318 1,042,898 ------------ ------------ 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 $ 861,702 05/18/05 832,799 732,447 Common Stock (B) 263 shs. 05/18/05 263,298 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 69 shs. 05/18/05 59,362 -- ------------ ------------ 1,155,459 732,447 ------------ ------------ * 01/22/04 and 06/09/08. ** 01/22/04 and 09/12/06. -------------------------------------------------------------------------------------------------------------------------------- 8 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 1,207,902 06/30/06 $ 1,148,853 $ 1,171,382 Preferred Stock Class A (B) 465 shs. 06/30/06 141,946 46,302 Common Stock (B) 1 sh. 06/30/06 152 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 164 shs. 06/30/06 48,760 16,273 ------------ ------------ 1,339,711 1,233,957 ------------ ------------ 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 $ 429,070 08/07/08 420,489 402,875 12.5% Senior Subordinated Note due 2015 $ 429,070 08/07/08 391,509 389,153 Common Stock (B) 41,860 shs. 08/07/08 41,860 -- Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 32,914 shs. 08/07/08 32,965 -- ------------ ------------ 886,823 792,028 ------------ ------------ CAPITAL SPECIALTY PLASTICS, INC. A producer of desiccant strips used for packaging pharmaceutical products. Common Stock (B) 55 shs. * 252 385,762 ------------ ------------ CLOUGH, HARBOUR AND ASSOCIATES An engineering service firm that is located in Albany, NY. 12.25% Senior Subordinated Note due 2015 $ 1,270,588 12/02/08 1,177,994 1,308,706 Preferred Stock (B) 147 shs. 12/02/08 146,594 139,261 ------------ ------------ 1,324,588 1,447,967 ------------ ------------ COEUR, INC. A producer of proprietary, disposable power injection syringes. 12% Senior Subordinated Note due 2016 $ 642,857 10/10/08 581,786 662,143 Common Stock (B) 321 shs. 10/10/08 32,143 30,536 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 495 shs. 10/10/08 48,214 5 ------------ ------------ 662,143 692,684 ------------ ------------ CONNECTICUT ELECTRIC, INC. A supplier and distributor of electrical products sold into the retail and wholesale markets. 12% Senior Subordinated Note due 2014 (D) $ 1,267,387 01/12/07 1,182,283 633,694 Limited Liability Company Unit Class A (B) 82,613 uts. 01/12/07 82,613 -- Limited Liability Company Unit Class C (B) 59,756 uts. 01/12/07 59,756 -- ------------ ------------ 1,324,652 633,694 ------------ ------------ * 12/30/97 and 05/29/99. -------------------------------------------------------------------------------------------------------------------------------- 9 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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) 9,081 shs. 07/05/07 $ 370,796 $ 908,072 Preferred Stock Series C (B) 4,757 shs. 07/05/07 158,912 463,018 Common Stock (B) 380 shs. 07/05/07 4 4 Limited Partnership Interest (B) 6.88% int. * 103,135 -- ------------ ------------ 632,847 1,371,094 ------------ ------------ COREPHARMA LLC A manufacturer of oral dose generic pharmaceuticals targeted at niche applications. 12% Senior Subordinated Note due 2013 $ 1,350,000 08/04/05 1,303,161 1,350,000 Warrant, exercisable until 2013, to purchase common stock at $.001 per share (B) 10 shs. 08/04/05 72,617 95,669 ------------ ------------ 1,375,778 1,445,669 ------------ ------------ CRANE RENTAL CORPORATION A crane rental company. 13% Senior Subordinated Note due 2015 $ 1,215,000 08/21/08 1,098,420 1,239,300 Common Stock (B) 135,000 shs. 08/21/08 135,000 96,760 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 72,037 shs. 08/21/08 103,143 51,632 ------------ ------------ 1,336,563 1,387,692 ------------ ------------ 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 $ 978,261 10/30/06 926,681 984,484 Limited Partnership Interest (B) 0.97% int. 10/30/06 371,739 550,433 Warrant, exercisable until 2014, to purchase preferred stock at $.01 per share (B) 26 shs. 10/30/06 26,380 34,493 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 18 shs. 10/30/06 18,000 37,366 ------------ ------------ 1,342,800 1,606,776 ------------ ------------ 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) 13.57% int. 08/27/98 366,495 -- Preferred Stock (B) 1,639 shs. 12/14/01 1,392,067 659,713 Warrants, exercisable until 2011, to purchase common stock of DHI Holdings, Inc. at $.01 per share (B) 6,676 shs. ** 201,655 -- ------------ ------------ 1,960,217 659,713 ------------ ------------ * 08/12/04 and 01/14/05. ** 10/24/96 and 08/28/98. -------------------------------------------------------------------------------------------------------------------------------- 10 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ DUNCAN SYSTEMS, INC. A distributor of windshields and side glass for the recreational vehicle market. 10% Senior Secured Term Note due 2013 $ 308,571 11/01/06 $ 303,942 $ 315,204 13% Senior Subordinated Note due 2014 $ 488,572 11/01/06 445,662 493,458 Common Stock (B) 102,857 shs. 11/01/06 102,857 82,492 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 32,294 shs. 11/01/06 44,663 25,900 ------------ ------------ 897,124 917,054 ------------ ------------ DWYER GROUP, INC. A franchiser of a variety of home repair services. Common Stock (B) 3,656 shs. * 365,600 604,820 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 1,077 shs. 10/30/03 98,719 178,106 ------------ ------------ 464,319 782,926 ------------ ------------ 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 $ 1,216,653 01/08/08 1,194,321 1,183,528 Common Stock (B) 349 shs. 01/08/08 174,701 56,621 ------------ ------------ 1,369,022 1,240,149 ------------ ------------ 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) 11 shs. 06/28/04 40,875 140,506 ------------ ------------ 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 $ 1,152,031 10/06/08 1,128,635 1,164,625 Preferred Stock (B) 2,298 shs. 10/06/08 229,804 128,669 Common Stock (B) 1,625 shs. 10/06/08 1,625 -- ------------ ------------ 1,360,064 1,293,294 ------------ ------------ F H S HOLDINGS LLC A national provider of customized disease management services to large self-insured employers. 12% Senior Subordinated Note due 2014 (D) $ 1,265,625 06/01/06 1,175,533 632,813 Limited Liability Company Units of Linden/FHS Holdings LLC (B) 84 uts. 06/01/06 84,368 -- Common Unit Class B (B) 734 uts. 06/01/06 64,779 -- ------------ ------------ 1,324,680 632,813 ------------ ------------ * 10/30/03 and 01/02/04. -------------------------------------------------------------------------------------------------------------------------------- 11 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 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 (D) $ 524,791 04/13/06 $ 516,919 $ 131,198 14% Senior Subordinated Note due 2014 (D) $ 317,177 04/13/06 283,220 -- Common Stock (B) 62,535 shs. 04/13/06 62,535 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 17,680 shs. 04/13/06 27,676 -- ------------ ------------ 890,350 131,198 ------------ ------------ 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) $ 1,252,174 02/03/06 1,123,044 -- Common Stock (B) 98 shs. 02/03/06 97,826 -- Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 135 shs. 02/03/06 110,348 -- ------------ ------------ 1,331,218 -- ------------ ------------ 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) $ 1,237,500 01/31/06 1,149,638 -- Preferred Stock (B) 16,792 shs. 06/12/08 16,792 -- Common Stock (B) 112,500 shs. 01/31/06 112,500 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 73,275 shs. 01/31/06 63,113 -- ------------ ------------ 1,342,043 -- ------------ ------------ GOLDEN COUNTY FOODS HOLDING, INC. A manufacturer of frozen appetizers and snacks. 12% Senior Subordinated Note due 2015 $ 1,012,500 11/01/07 914,607 810,000 16% PIK Note due 2015 $ 207,545 12/31/08 169,580 166,036 8% Series A Convertible Preferred Stock, convertible into 4.25% of the fully diluted common shares (B) 77,643 shs. 11/01/07 77,643 -- ------------ ------------ 1,161,830 976,036 ------------ ------------ H M HOLDING COMPANY A designer, manufacturer, and importer of promotional and wood furniture. 12% Senior Subordinated Note due 2013 (D) $ 1,170,000 02/10/06 1,084,725 -- Preferred Stock (B) 21 shs. * 21,428 -- Common Stock (B) 180 shs. 02/10/06 180,000 -- Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 67 shs. 02/10/06 61,875 -- ------------ ------------ 1,348,028 -- ------------ ------------ * 09/18/07 and 06/27/08. -------------------------------------------------------------------------------------------------------------------------------- 12 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ HIGHGATE CAPITAL LLC An acquirer of controlling or substantial interests in manufacturing and marketing entities. Series A Preferred Units (B) 0.30% int. 07/21/94 $ 91,866 $ -- ------------ ------------ HOME DECOR HOLDING COMPANY A designer, manufacturer and marketer of framed art and wall decor products. 12.5% Senior Subordinated Note due 2012 $ 1,081,731 * 1,022,243 1,074,883 Common Stock (B) 33 shs. * 33,216 28,072 Warrant, exercisable until 2012, to purchase common stock at $.02 per share (B) 106 shs. * 105,618 89,252 ------------ ------------ 1,161,077 1,192,207 ------------ ------------ HOSPITALITY MINTS HOLDING COMPANY A manufacturer of individually-wrapped imprinted promotional mints. 12% Senior Subordinated Note due 2016 $ 1,098,837 08/19/08 1,016,628 1,071,987 Common Stock (B) 251 shs. 08/19/08 251,163 66,151 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 65 shs. 08/19/08 60,233 17,099 ------------ ------------ 1,328,024 1,155,237 ------------ ------------ INSURANCE CLAIMS MANAGEMENT, INC. A third party administrator providing auto and property claim administration services for insurance companies. Common Stock (B) 37 shs. 02/27/07 1,100 60,292 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 11 shs. 02/27/07 324 17,761 ------------ ------------ 1,424 78,053 ------------ ------------ 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 $ 25,055 03/01/04 1 -- Common Stock (B) 130 shs. 06/01/00 149,500 -- ------------ ------------ 149,501 -- ------------ ------------ INTERNATIONAL OFFSHORE SERVICES LLC A leading provider of marine transportation services, platform decomissioning, and salvage services to oil and gas producers, in the shallow waters of the Gulf of Mexico. 14.25% Senior Subordinated Secured Note due 2017 $ 1,350,000 07/07/09 1,217,417 1,390,500 Limited Liability Company Unit (B) 1,647 uts. 07/07/09 98,833 16 ------------ ------------ 1,316,250 1,390,516 ------------ ------------ * 06/30/04 and 08/19/04. -------------------------------------------------------------------------------------------------------------------------------- 13 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 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 (D) $ 510,187 08/04/00 $ 449,086 $ 255,094 Limited Partnership Interest of Saw Mill Capital Fund II, L.P. (B) 1.30% int. 08/03/00 469,312 -- Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 26,931 shs. 08/04/00 61,101 -- ------------ ------------ 979,499 255,094 ------------ ------------ JUSTRITE MANUFACTURING ACQUISITION CO. A manufacturer of safety products such as storage cabinets and containers. 12% Senior Subordinated Note due 2011 $ 843,750 12/15/04 819,336 843,750 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 594 shs. 12/15/04 53,528 96,998 ------------ ------------ 872,864 940,748 ------------ ------------ 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 $ 1,282,379 10/15/07 1,256,778 1,308,026 Common Stock (B) 116,827 shs. 10/15/07 116,827 88,614 ------------ ------------ 1,373,605 1,396,640 ------------ ------------ K N B HOLDINGS CORPORATION A designer, manufacturer and marketer of products for the custom framing market. 13.5% Senior Subordinated Note due 2013 $ 1,344,732 05/25/06 1,292,963 1,143,022 Common Stock (B) 71,053 shs. 05/25/06 71,053 -- Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 43,600 shs. 05/25/06 37,871 -- ------------ ------------ 1,401,887 1,143,022 ------------ ------------ 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 (D) $ 1,115,217 07/16/08 1,042,077 836,413 Convertible Preferred Stock Series C (B) 29 shs. 06/30/09 29,348 21,750 Convertible Preferred Stock Series D (B) 13 shs. 09/17/09 12,958 9,720 Common Stock (B) 235 shs. 07/15/08 234,783 -- Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 51 shs. 07/16/08 50,836 -- ------------ ------------ 1,370,002 867,883 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 14 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 1,372,848 03/14/07 $ 1,256,317 $ 1,098,278 Common Stock (B) 123 shs. 03/13/07 123,000 -- Warrant, exercisable until 2019 to purchase preferred stock at $.01 per share (B) 71 shs. 07/07/09 -- -- Warrant, exercisable until 2017, to purchase common stock at $.01 per share (B) 89 shs. 03/14/07 85,890 -- ------------ ------------ 1,465,207 1,098,278 ------------ ------------ 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 $ 1,198,984 12/20/07 1,176,925 1,222,964 Preferred Stock (B) 192,314 shs. 12/20/07 192,314 217,065 Common Stock (B) 54,326 shs. 12/20/07 543 28,343 ------------ ------------ 1,369,782 1,468,372 ------------ ------------ 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 $ 649,635 09/12/08 601,873 662,626 Common Stock (B) 32 shs. 09/12/08 32,143 32,446 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 35 shs. 09/12/08 34,714 35,040 ------------ ------------ 668,730 730,112 ------------ ------------ 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 $ 516,177 05/04/07 483,072 516,177 Limited Liability Company Unit (B) 12,763 uts. * 166,481 175,556 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 1,787 shs. 05/04/07 22,781 24,579 ------------ ------------ 672,334 716,312 ------------ ------------ MAVERICK ACQUISITION COMPANY A manufacturer of capsules that cover the cork and neck of wine bottles. 6.78% Senior Secured Tranche A Note due 2010 (C) $ 168,042 09/03/04 168,042 166,914 12.5% Senior Secured Tranche B Note due 2011 $ 179,104 09/03/04 170,213 172,534 Limited Partnership Interest (B) 4.48% int. 09/03/04 33,582 6,819 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 243 shs. 09/03/04 22,556 4,927 ------------ ------------ 394,393 351,194 ------------ ------------ * 05/04/07 and 01/02/08. -------------------------------------------------------------------------------------------------------------------------------- 15 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 614,508 08/29/08 $ 544,558 $ 626,798 Preferred Unit (B) 66 uts. 08/29/08 66,451 71,000 Common Unit Class A (B) 671 uts. 08/29/08 671 30,138 Common Unit Class B (B) 250 uts. 08/29/08 63,564 11,214 ------------ ------------ 675,244 739,150 ------------ ------------ MEGTEC HOLDINGS, INC. A supplier of industrial and environmental products and services to a broad array of industries. 12% Senior Subordinated Note due 2016 $ 1,144,068 09/24/08 1,048,910 1,127,236 Preferred Stock (B) 56 shs. 09/24/08 54,040 58,279 Limited Partnership Interest (B) 205,932 int. 09/16/08 205,932 -- Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 18 shs. 09/24/08 18,237 -- ------------ ------------ 1,327,119 1,185,515 ------------ ------------ 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 $ 1,421,795 * 1,362,207 1,436,013 Common Stock (B) 238 shs. * 238,000 337,426 Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 87 shs. * 86,281 123,076 ------------ ------------ 1,686,488 1,896,515 ------------ ------------ 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 $ 1,246,154 07/21/08 1,177,306 1,230,173 Preferred Stock (B) 139 shs. 07/21/08 138,374 131,716 Common Stock (B) 9 shs. 07/21/08 10,000 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 6 shs. 07/21/08 5,510 -- ------------ ------------ 1,331,190 1,361,889 ------------ ------------ MOMENTUM HOLDING CO. A designer and supplier of upholstery fabric to commercial furniture manufacturers and architectural and design firms. Limited Partnership Interest (B) 11.24% int. 08/04/06 56,198 126,364 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 586 shs. 08/04/06 56,705 131,720 ------------ ------------ 112,903 258,084 ------------ ------------ * 08/12/05 and 09/11/06. -------------------------------------------------------------------------------------------------------------------------------- 16 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 1,350,000 07/25/08 $ 1,271,272 $ 1,080,000 14% PIK Note due 2014 $ 359,867 07/25/08 312,512 287,894 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 81 shs. 03/31/06 73,125 -- ------------ ------------ 1,656,909 1,367,894 ------------ ------------ NABCO, INC. A producer of explosive containment vessels in the United States. 14% Senior Subordinated Note due 2014 $ 431,692 02/24/06 370,490 323,769 Limited Liability Company Unit (B) 437 uts. * 436,984 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 68 shs. 02/24/06 19,687 -- ------------ ------------ 827,161 323,769 ------------ ------------ 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 2010 $ 67,416 11/14/08 67,416 67,416 14% Senior Subordinated Note due 2014 (D) $ 764,921 05/28/04 660,453 -- 10.75% Senior Secured Note due 2011 (D) $ 348,118 05/28/04 347,086 87,030 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 116,521 shs. 05/28/04 74,736 -- ------------ ------------ 1,149,691 154,446 ------------ ------------ 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 $ 1,125,000 08/02/07 999,658 1,136,250 Common Stock (B) 225,000 shs. 08/02/07 225,000 346,845 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 63,191 shs. 08/02/07 102,842 97,411 ------------ ------------ 1,327,500 1,580,506 ------------ ------------ * 02/24/06 and 06/22/07. -------------------------------------------------------------------------------------------------------------------------------- 17 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 810,000 02/02/07 $ 745,713 $ 627,618 Limited Partnership Interest of Saw Mill PCG Partners LLC (B) 1.38% int. 02/01/07 539,978 -- Limited Liability Company Unit Class D of Saw Mill PCG Partners LLC (B) 22 uts. * 22,083 11,040 Preferred Stock Class A (B) 1 sh. 12/18/08 726 360 Preferred Stock Class A-1 (B) 1 sh. 09/30/09 1,209 605 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 48 shs. 02/02/07 48,087 -- ------------ ------------ 1,357,796 639,623 ------------ ------------ NORTHWEST MAILING SERVICES, INC. A producer of promotional materials for companies that use direct mail as part of their customer retention and loyalty programs. 12% Senior Subordinated Note due 2016 $ 1,207,895 07/09/09 1,001,888 1,256,211 Limited Partnership Interest (B) 1,421 uts. 07/09/09 142,105 135,000 Warrant, exercisable until 2019, to purchase common stock at $.01 per share (B) 1,852 shs. 07/09/09 185,163 19 ------------ ------------ 1,329,156 1,391,230 ------------ ------------ NYLONCRAFT, INC. A supplier of engineered plastic components for the automotive industry. 9% Senior Secured Note due 2009 $ 464,286 01/28/02 464,286 348,215 11.5% Senior Subordinated Note due 2012 (D) $ 857,143 01/28/02 820,159 -- Common Stock (B) 178,571 shs. 01/28/02 178,571 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 138,928 shs. 01/28/02 92,597 -- ------------ ------------ 1,555,613 348,215 ------------ ------------ 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 $ 167,771 01/03/06 165,255 171,233 13% Senior Subordinated Note due 2013 $ 392,709 01/03/06 361,756 392,709 Common Stock (B) 184,176 shs. 01/03/06 184,176 136,048 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 43,073 shs. 01/03/06 35,900 31,817 ------------ ------------ 747,087 731,807 ------------ ------------ * 12/18/08 and 09/30/09. -------------------------------------------------------------------------------------------------------------------------------- 18 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ OLYMPIC SALES, INC. A boat retailer in Washington state, Oregon, California and British Columbia. 12% Senior Subordinated Note due 2009 (D) $ 511,000 08/07/98 $ 511,000 $ 76,650 12% Senior Subordinated Note due 2009 (D) $ 244,154 02/09/00 213,313 36,623 ------------ ------------ 724,313 113,273 ------------ ------------ ONTARIO DRIVE & GEAR LTD. A manufacturer of all-wheel drive, off-road amphibious vehicles and related accessories. Limited Liability Company Unit (B) 1,942 uts. 01/17/06 302,885 240,042 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 328 shs. 01/17/06 90,424 40,528 ------------ ------------ 393,309 280,570 ------------ ------------ 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 $ 1,224,360 07/03/06 1,173,762 1,236,604 Preferred Unit (B) 202 uts. 07/03/06 202,320 281,552 Preferred Unit (B) 36 uts. 07/03/06 36,420 50,683 Common Unit Class I (B) 78 uts. 07/03/06 -- 171,450 Common Unit Class L (B) 17 uts. 07/03/06 -- 36,220 ------------ ------------ 1,412,502 1,776,509 ------------ ------------ 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 $ 1,215,000 03/31/06 1,155,486 1,215,000 Preferred Stock (B) 19 shs. 03/31/06 174,492 231,669 Common Stock (B) 12 shs. 03/31/06 13,500 53,713 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 7 shs. 03/31/06 5,888 31,255 ------------ ------------ 1,349,366 1,531,637 ------------ ------------ 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 $ 704,835 04/27/07 660,393 675,760 Limited Liability Company Unit (B) 928,962 uts. 04/27/07 33,477 -- ------------ ------------ 693,870 675,760 ------------ ------------ 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 $ 1,125,000 12/19/00 1,081,714 1,119,352 Membership Interests of MM/Lincap PPI Investments, Inc., LLC (B) 1.28% int. 12/21/00 140,625 93,799 ------------ ------------ 1,222,339 1,213,151 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 19 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ PEARLMAN ENTERPRISES, INC. A developer and distributor of tools, equipment and supplies to the natural and engineered stone industry. Preferred Stock Series A (B) 1,236 shs. 05/22/09 $ 59,034 $ -- Preferred Stock Series B (B) 7,059 shs. 05/22/09 290,050 -- Common Stock (B) 21,462 shs. 05/22/09 993,816 -- ------------ ------------ 1,342,900 -- ------------ ------------ POSTLE ALUMINUM COMPANY LLC A manufacturer and distributor of aluminum extruded products. 3% Senior Subordinated PIK Note due 2014 (D) $ 1,163,700 10/02/06 1,066,355 290,925 Limited Liability Company Unit Class A 733 uts. 10/02/06 270,000 -- Limited Liability Company Unit 76 uts. 05/22/09 38,140 36,049 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 4,550 shs. 10/02/06 65,988 -- ------------ ------------ 1,440,483 326,974 ------------ ------------ 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 $ 1,255,814 02/11/08 1,153,083 1,280,930 Limited Partnership Interest (B) 12.55% int. 02/11/08 94,092 48,744 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 700 shs. 02/11/08 88,723 96,065 ------------ ------------ 1,335,898 1,425,739 ------------ ------------ QUALIS AUTOMOTIVE LLC A distributor of aftermarket automotive brake and chassis products. 12% Senior Subordinated Note due 2012 $ 922,612 05/28/04 846,452 948,254 Common Stock (B) 187,500 shs. 05/28/04 187,500 30,995 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 199,969 shs. 05/28/04 199,969 33,056 ------------ ------------ 1,233,921 1,012,305 ------------ ------------ 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 $ 1,200,277 12/15/06 1,106,663 1,189,097 Limited Liability Company Unit (B) 1,497 uts. 12/15/06 149,723 84,048 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 2 shs. 12/15/06 69,609 39,662 ------------ ------------ 1,325,995 1,312,807 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 20 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 1,350,000 01/18/08 $ 1,306,541 $ 1,365,987 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 3 shs. 01/18/08 16,459 30,196 ------------ ------------ 1,323,000 1,396,183 ------------ ------------ ROYAL BATHS MANUFACTURING COMPANY A manufacturer and distributor of acrylic and cultured marble bathroom products. 12.5% Senior Subordinated Note due 2011 $ 562,500 11/14/03 538,325 542,790 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 74 shs. 11/14/03 65,089 -- ------------ ------------ 603,414 542,790 ------------ ------------ SAFETY SPEED CUT MANUFACTURING COMPANY, INC. A manufacturer of vertical panel saws and routers for the wood working industry. Class B Common Stock (B) 846 shs. 06/02/99 146,456 264,562 SAVAGE SPORTS HOLDING, INC. A manufacturer of sporting firearms. 12% Senior Subordinated Note due 2012 $ 814,655 09/10/04 783,332 814,655 Common Stock (B) 324 shs. * 340,378 543,999 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 71 shs. 09/10/04 60,129 118,773 ------------ ------------ 1,183,839 1,477,427 ------------ ------------ 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 $ 934,615 01/15/09 816,574 853,234 Common Stock (B) 69 shs. 01/15/09 69,231 17,308 Warrant, exercisable until 2019, to purchase common stock at $.01 per share (B) 149 shs. 01/15/09 149,084 1 ------------ ------------ 1,034,889 870,543 ------------ ------------ SMART SOURCE HOLDINGS LLC A short-term computer rental company. 12% Senior Subordinated Note due 2015 $ 1,176,924 ** 1,079,914 1,176,924 Limited Liability Company Unit (B) 328 uts. ** 337,762 272,481 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 83 shs. ** 87,231 69,020 ------------ ------------ 1,504,907 1,518,425 ------------ ------------ * 09/10/04 and 10/05/07. ** 08/31/07 and 03/06/08. -------------------------------------------------------------------------------------------------------------------------------- 21 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ SPECIALTY COMMODITIES, INC. A distributor of specialty food ingredients. 13.25% Senior Subordinated Note due 2016 $ 1,205,175 10/23/08 $ 1,131,035 $ 1,241,331 Common Stock (B) 15,882 shs. 10/23/08 158,824 150,879 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 5,852 shs. 10/23/08 53,285 59 ------------ ------------ 1,343,144 1,392,269 ------------ ------------ STANTON CARPET HOLDING CO. A designer and marketer of high and mid-priced decorative carpets and rugs. 12.13% Senior Subordinated Note due 2014 $ 1,185,366 08/01/06 1,125,694 1,105,070 Common Stock (B) 165 shs. 08/01/06 164,634 13,038 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 55 shs. 08/01/06 49,390 4,342 ------------ ------------ 1,339,718 1,122,450 ------------ ------------ SYNTERACT HOLDINGS CORPORATION A provider of outsourced clinical trial management services to pharmaceutical and biotechnology companies. 14% Senior Subordinated Note due 2016 $ 1,364,800 09/02/08 1,276,154 1,392,096 Redeemable Preferred Stock Series A (B) 678 shs. 09/02/08 6,629 23,054 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 6,778 shs. 09/02/08 59,661 -- ------------ ------------ 1,342,444 1,415,150 ------------ ------------ T H I ACQUISITION, INC. A machine servicing company providing value-added steel services to long steel products. 12% Senior Subordinated Note due 2016 $ 1,350,000 01/14/08 1,276,383 1,350,000 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 5 shs. 01/14/08 46,617 39,699 ------------ ------------ 1,323,000 1,389,699 ------------ ------------ 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 $ 1,173,909 10/14/05 1,033,473 1,173,909 Common Stock (B) 1,167 shs. 10/14/05 1,167 488,518 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 631 shs. 09/30/08 300,683 264,143 ------------ ------------ 1,335,323 1,926,570 ------------ ------------ TELECORPS HOLDINGS, INC. A provider of equipment and services to producers of television shows and motion pictures. 12.75% Senior Subordinated Note due 2016 $ 1,681,677 * 1,474,695 1,732,127 Common Stock (B) 143 shs. 09/02/09 5,823 5,532 Warrant, exercisable until 2019, to purchase common stock at $.01 per share (B) 4,187 shs. * 173,349 42 ------------ ------------ 1,653,867 1,737,701 ------------ ------------ * 05/20/09 and 09/02/09. -------------------------------------------------------------------------------------------------------------------------------- 22 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 664,062 * $ 637,480 $ 531,250 6.75% Term Note due 2012 (C) $ 861,861 * 858,653 775,675 Limited Partnership Interest of Saw Mill Capital Fund V, LLC (B) 2.27% int. ** 85,292 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 41 shs. 04/28/06 33,738 -- ------------ ------------ 1,615,163 1,306,925 ------------ ------------ 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 $ 1,185,366 10/26/07 1,113,016 1,007,561 Series A Preferred Stock (B) 219 shs. 10/26/07 219,203 -- ------------ ------------ 1,332,219 1,007,561 ------------ ------------ 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 $ 486,487 03/02/07 479,190 462,163 13% Senior Subordinated Note due 2014 $ 341,971 03/02/07 280,347 256,478 Common Stock (B) 71,542 shs. 03/02/07 71,542 -- Warrant, exercisable until 2014 to purchase common stock at $.01 per share (B) 19,733 shs. 03/02/07 54,784 -- ------------ ------------ 885,863 718,641 ------------ ------------ TRANSPAC HOLDING COMPANY A designer, importer, and wholesaler of home decor and seasonal gift products. 12% Senior Subordinated Note due 2015 (D) $ 938,651 10/31/07 873,498 797,853 Common Stock (B) 110 shs. 10/31/07 110,430 -- Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 50 shs. 10/31/07 46,380 -- ------------ ------------ 1,030,308 797,853 ------------ ------------ TRANSTAR HOLDING COMPANY A distributor of aftermarket automotive transmission parts. 12% Senior Subordinated Note due 2014 $ 918,000 08/31/05 889,663 927,180 Common Stock (B) 571 shs. *** 570,944 519,016 Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 46 shs. 08/31/05 41,021 41,362 ------------ ------------ 1,501,628 1,487,558 ------------ ------------ * 04/28/06 and 09/13/06. ** 03/01/05 and 10/10/08. *** 08/31/05 and 04/30/07. -------------------------------------------------------------------------------------------------------------------------------- 23 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ 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 $ 1,356,000 02/05/98 $ 1,326,978 $ 1,356,000 Common Stock (B) 315 shs. 02/04/98 315,000 271,830 Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 222 shs. 02/05/98 184,416 191,575 ------------ ------------ 1,826,394 1,819,405 ------------ ------------ 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) $ 1,222,698 * 1,133,973 305,675 16% PIK Note due 2010 (D) $ 338,540 12/30/08 84,635 84,635 Preferred Stock Series B (B) 128 shs. 10/20/08 127,677 -- Common Stock (B) 393 shs. * 423,985 -- Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 81 shs. * 84,650 -- Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 558 shs. 10/20/08 -- -- ------------ ------------ 1,854,920 390,310 ------------ ------------ TRUSTILE DOORS, INC. A manufacturer and distributor of interior doors. Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 3,060 shs. 04/11/03 36,032 120,575 ------------ ------------ U M A ENTERPRISES, INC. An importer and wholesaler of home decor products. 15% Senior Subordinated Note due 2015 $ 924,872 02/08/08 904,738 903,270 Convertible Preferred Stock (B) 470 shs. 02/08/08 469,565 12,267 ------------ ------------ 1,374,303 915,537 ------------ ------------ 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 $ 996,500 04/30/04 943,396 847,025 Common Stock (B) 96 shs. 04/30/04 96,400 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 122 shs. 04/30/04 112,106 -- ------------ ------------ 1,151,902 847,025 ------------ ------------ * 07/19/05 and 12/22/05. -------------------------------------------------------------------------------------------------------------------------------- 24 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ VISIONEERING, INC. A designer and manufacturer of tooling and fixtures for the aerospace industry. 10.5% Senior Secured Term Loan due 2013 $ 458,824 05/17/07 $ 451,941 $ 464,797 13% Senior Subordinated Note due 2014 $ 370,588 05/17/07 338,606 374,294 18% PIK Convertable Preferred Stock (B) 21,361 shs. 03/13/09 41,440 39,368 Common Stock (B) 70,588 shs. 05/17/07 70,588 1,970 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 20,003 shs. 05/17/07 31,460 558 ------------ ------------ 934,035 880,987 ------------ ------------ VITALITY FOODSERVICE, INC. A non-carbonated beverage dispensing company focused on the foodservice industry. 13% Senior Subordinated Note due 2011 $ 999,153 09/24/04 959,785 994,887 Common Stock (B) 14,006 shs. * 140,064 152,980 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 12,593 shs. 09/24/04 98,938 137,547 ------------ ------------ 1,198,787 1,285,414 ------------ ------------ 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) $ 900,000 07/19/04 785,152 -- 14.5% PIK Note due 2010 (D) $ 215,976 06/30/07 180,500 -- Limited Liability Company Unit Class A (B) 219,375 uts. 07/19/04 219,375 -- Limited Liability Company Unit Class B (B) 96,848 uts. 07/19/04 96,848 -- ------------ ------------ 1,281,875 -- ------------ ------------ WAGGIN' TRAIN HOLDINGS LLC A producer of premium quality meat dog treats. 14% Senior Subordinated Note due 2014 $ 1,169,238 11/15/07 1,145,033 1,192,619 Limited Liability Company Unit Class B (B) 224 uts. 11/15/07 223,757 254,503 Limited Liability Company Unit Class C (B) 224 uts. 11/15/07 -- 118,259 ------------ ------------ 1,368,790 1,565,381 ------------ ------------ WALLS INDUSTRIES, INC. A provider of branded workwear and sporting goods apparel. Limited Partnership Interest (B) 0.20% int. 07/12/04 1,974 -- Common Stock (B) 2,133 shs. 12/21/07 -- -- ------------ ------------ 1,974 -- ------------ ------------ WELLBORN FOREST HOLDING CO. A manufacturer of semi-custom kitchen and bath cabinetry. 12.13% Senior Subordinated Note due 2014 $ 911,250 11/30/06 858,327 774,563 Common Stock (B) 101 shs. 11/30/06 101,250 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 51 shs. 11/30/06 45,790 -- ------------ ------------ 1,005,367 774,563 ------------ ------------ * 09/24/04 and 12/22/06. -------------------------------------------------------------------------------------------------------------------------------- 25 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ WORKPLACE MEDIA HOLDING CO. A direct marketer specializing in providing advertisers with access to consumers in the workplace. 13% Senior Subordinated Note due 2015 $ 613,692 05/14/07 $ 565,304 $ 567,056 Limited Partnership Interest (B) 12.26% int. 05/14/07 61,308 -- Warrant, exercisable until 2015, to purchase common stock at $.02 per share (B) 47 shs. 05/14/07 44,186 -- ------------ ------------ 670,798 567,056 ------------ ------------ 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 (D) $ 1,229,741 09/08/08 1,203,293 614,870 Common Stock (B) 150 shs. 09/08/08 150,000 -- ------------ ------------ 1,353,293 614,870 ------------ ------------ TOTAL PRIVATE PLACEMENT INVESTMENTS (E) 112,371,878 95,787,665 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 26 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Shares or Interest Due Principal CORPORATE RESTRICTED SECURITIES: (A) (Continued) Rate Date Amount Cost Fair Value ------- -------- ------------ ------------ ------------ RULE 144A SECURITIES - 4.33%: BONDS - 4.33% ACCO Brands Corporation 10.625% 03/15/15 $ 45,000 $ 44,326 $ 47,081 Affinia Group, Inc. 10.750 08/15/16 25,000 24,700 26,813 Allegheny Energy Supply 8.250 04/15/12 500,000 518,944 550,790 Anheuser-Busch Inbev Wld, Inc. 7.720 01/15/19 500,000 499,615 591,630 Appleton Papers, Inc. 11.250 12/15/15 252,500 250,000 204,841 Cenveo Corporation 10.500 08/15/16 45,000 45,000 42,300 Compucom Systems, Inc. 12.500 10/01/15 670,000 650,817 624,775 Douglas Dynamics LLC 7.750 01/15/12 485,000 461,804 417,100 G F S I, Inc. (C) 10.500 06/01/11 358,000 343,948 266,710 Gannett Company, Inc. 8.750 11/15/14 25,000 24,616 24,500 Gannett Company, Inc. 9.375 11/15/17 60,000 59,149 58,800 H C A, Inc. 9.875 02/15/17 15,000 14,526 15,975 MGM Mirage, Inc. 10.375 05/15/14 30,000 29,203 32,025 MGM Mirage, Inc. 11.125 11/15/17 50,000 48,706 54,625 Markwest Energy Operating Co. 6.875 11/01/14 35,000 27,653 32,725 Newpage Corporation 11.375 12/31/14 375,000 367,074 365,625 Packaging Dynamics Corporation of America 10.000 05/01/16 975,000 969,680 441,187 Sealed Air Corporation 7.875 06/15/17 500,000 492,132 527,245 Speedway Motorsports, Inc. 8.750 06/01/16 35,000 33,932 36,400 Tunica-Biloxi Gaming Authority 9.000 11/15/15 540,000 556,042 486,000 ------------ ------------ TOTAL BONDS 5,461,867 4,847,147 ------------ ------------ CONVERTIBLE PREFERRED STOCK - 0.00% ETEX Corporation (B) 194 179 -- ------------ ------------ TOTAL CONVERTIBLE PREFERRED STOCK 179 -- ------------ ------------ PREFERRED STOCK - 0.00% TherOX, Inc. (B) 26 1,032 -- ------------ ------------ TOTAL PREFERRED STOCK 1,032 -- ------------ ------------ COMMON STOCK - 0.00% Touchstone Health Partnership (B) 292 1,062 -- ------------ ------------ TOTAL COMMON STOCK 1,062 -- ------------ ------------ TOTAL RULE 144A SECURITIES 5,464,140 4,847,147 ------------ ------------ TOTAL CORPORATE RESTRICTED SECURITIES $117,836,018 $100,634,812 ------------ ------------ ---------------------------------------------------------------------------------------------------------------- 27 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Interest Due Principal Market CORPORATE PUBLIC SECURITIES - 14.48%:(A) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ BONDS - 13.51% Allegheny Technologies, Inc. 9.375% 06/12/19 $ 500,000 $ 522,147 $ 566,085 Allied Waste NA 7.125 05/15/16 500,000 506,250 527,500 Aramark Corporation (C) 3.983 02/01/15 100,000 100,000 86,750 Bunge Limited Finance Corporation 8.500 06/15/19 500,000 512,170 576,415 C R H America, Inc. 5.300 10/15/13 500,000 418,430 516,065 C V S Caremark Corporation 5.750 06/01/17 500,000 407,380 535,252 Citigroup, Inc. 5.500 04/11/13 500,000 437,890 511,663 Comcast Corporation 6.500 01/15/15 500,000 443,545 557,146 Corrections Corporation of America 7.750 06/01/17 75,000 72,901 77,438 Cytec Industries, Inc. 8.950 07/01/17 600,000 604,097 648,124 Denbury Resources, Inc. 9.750 03/01/16 25,000 23,318 26,562 El Paso Corporation 12.000 12/12/13 25,000 22,549 28,561 Electronic Data Systems Corporation 7.125 10/15/09 500,000 500,058 501,014 Gencorp, Inc. 9.500 08/15/13 130,000 130,000 104,000 Goldman Sachs Group, Inc. 4.750 07/15/13 500,000 418,645 521,797 Goodyear Tire & Rubber Co. 10.500 05/15/16 50,000 48,002 54,250 Inergy LP/Inergy Fin 8.250 03/01/16 75,000 75,000 75,375 Intelsat Bermuda Ltd. 9.250 06/15/16 690,000 714,782 677,925 International Game Technology 7.500 06/15/19 500,000 499,720 554,075 Iron Mountain, Inc. 8.750 07/15/18 500,000 513,135 520,000 Iron Mountain, Inc. 8.375 07/15/18 20,000 19,925 20,675 Johnson Controls, Inc. 5.500 01/15/16 500,000 398,125 517,940 Lubrizol Corporation 8.875 02/01/19 500,000 496,280 617,191 Manitowoc Company, Inc. 7.125 11/01/13 100,000 100,000 86,500 N R G Energy, Inc. 8.500 06/15/19 100,000 98,348 100,375 Nortek, Inc. 10.000 12/01/13 100,000 98,957 102,000 Owens Corning, Inc. 9.000 06/15/19 30,000 29,516 32,400 Pliant Corporation (C) 11.850 12/15/09 857,441 834,631 738,471 Quicksilver Resources, Inc. 7.125 04/01/16 350,000 334,250 303,625 Rental Service Corporation 9.500 12/01/14 175,000 175,734 168,875 Sheridan Acquisition Corporation 10.250 08/15/11 225,000 222,001 189,000 Stewart & Stevenson LLC 10.000 07/15/14 735,000 755,033 676,200 Teck Resources Ltd 9.750 05/15/14 25,000 23,895 27,500 Teck Resources Ltd 10.250 05/15/16 40,000 37,952 45,200 Teck Resources Ltd 10.750 05/15/19 30,000 28,508 34,875 Texas Industries, Inc. 7.250 07/15/13 35,000 35,000 33,600 ---------------------------------------------------------------------------------------------------------------- 28 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Shares or Interest Due Principal Market CORPORATE PUBLIC SECURITIES: (A) (Continued) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ The Valspar Corporation 7.250% 06/15/19 $ 500,000 $ 501,547 $ 541,980 Ticketmaster Entertainment, Inc. 10.750 07/28/16 250,000 250,000 256,250 Titan International, Inc. 8.000 01/15/12 70,000 70,000 67,725 Tube City IMS Corporation 9.750 02/01/15 1,000,000 990,072 810,000 Tyco International Group SA 8.500 01/15/19 125,000 124,996 151,859 Tyco International Group SA 6.550 10/01/17 500,000 457,495 523,410 United Components, Inc. 9.375 06/15/13 535,000 535,441 429,337 United Rentals, Inc. 6.500 02/15/12 325,000 235,625 325,812 Vought Aircraft Industries 8.000 07/15/11 650,000 647,540 643,500 ------------ ------------ TOTAL BONDS 14,470,890 15,110,297 ------------ ------------ COMMON STOCK - 0.51% A123 System, Inc. 350 4,725 7,462 CKX, Inc. (B) 52,500 422,625 352,275 Directed Electronics, Inc. (B) 195,118 982,867 81,949 ITC^DeltaCom, Inc. (B) 94,588 827,645 122,019 Intrepid Potash, Inc. (B) 185 5,920 4,364 ------------ ------------ TOTAL COMMON STOCK 2,243,782 568,069 ------------ ------------ CONVERTIBLE BONDS - 0.46% Citadel Broadcasting Corporation 4.000% 02/15/11 $ 250,000 194,063 37,500 Transocean, Inc. 1.500 12/15/37 500,000 411,093 476,250 ------------ ------------ TOTAL CONVERTIBLE BONDS 605,156 513,750 ------------ ------------ TOTAL CORPORATE PUBLIC SECURITIES $ 17,319,828 $ 16,192,116 ------------ ------------ TOTAL INVESTMENTS 104.47% $135,155,846 $116,826,928 ============ ------------ Other Assets 6.99 7,819,552 Liabilities (11.46) (12,812,616) ------- ------------ TOTAL NET ASSETS 100.00% $111,833,864 ======= ============ (A) In each of the convertible note, warrant, 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 09/30/09. (D) Defaulted security; interest not accrued. (E) Illiquid security. At September 30, 2009, the values of these securities amounted to $95,787,665 or 85.66% of net assets. PIK - Payment-in-kind ---------------------------------------------------------------------------------------------------------------- 29 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- AEROSPACE - 3.05% CHEMICAL, PLASTICS & RUBBER - 0.34% Gencorp, Inc. $ 104,000 Capital Specialty Plastics, Inc. 385,762 P A S Holdco LLC 1,776,509 -------------- Visioneering, Inc. 880,987 CONSUMER PRODUCTS - 7.56% Vought Aircraft Industries 643,500 Aero Holdings, Inc. 1,877,851 -------------- Bravo Sports Holding Corporation 1,233,957 3,404,996 G F S I, Inc. 266,710 -------------- K N B Holdings Corporation 1,143,022 AUTOMOBILE - 3.98% Momentum Holding Co. 258,084 Goodyear Tire & Rubber Co. 54,250 R A J Manufacturing Holdings LLC 1,312,807 Jason, Inc. 255,094 Royal Baths Manufacturing Company 542,790 Johnson Controls, Inc. 517,940 The Tranzonic Companies 1,819,405 Nyloncraft, Inc. 348,215 Walls Industries, Inc. -- Ontario Drive & Gear Ltd. 280,570 -------------- Qualis Automotive LLC 1,012,305 8,454,626 Titan International, Inc. 67,725 -------------- Transtar Holding Company 1,487,558 CONTAINERS, PACKAGING & GLASS - 4.41% United Components, Inc. 429,337 Flutes, Inc. 131,198 -------------- Maverick Acquisition Company 351,194 4,452,994 P I I Holding Corporation 1,531,637 -------------- Packaging Dynamics Corporation of America 441,187 BEVERAGE, DRUG & FOOD - 4.91% Paradigm Packaging, Inc. 1,213,151 Anheuser-Busch 591,630 Pliant Corporation 738,471 Aramark Corporation 86,750 Sealed Air Corporation 527,245 Golden County Foods Holding, Inc. 976,036 Vitex Packaging Group, Inc. -- Hospitality Mints Holding Company 1,155,237 -------------- Specialty Commodities, Inc. 1,392,269 4,934,083 Vitality Foodservice, Inc. 1,285,414 -------------- -------------- DISTRIBUTION - 1.98% 5,487,336 Duncan Systems, Inc. 917,054 -------------- FCX Holdings Corporation 1,293,294 BROADCASTING & ENTERTAINMENT - 1.39% -------------- Citadel Broadcasting Corporation 37,500 2,210,348 CKX, Inc. 352,275 -------------- Comcast Corporation 557,146 Speedway Motorsports, Inc. 36,400 Workplace Media Holding Co. 567,056 -------------- 1,550,377 -------------- BUILDINGS & REAL ESTATE - 1.15% K W P I Holdings Corporation 1,098,278 Owens Corning, Inc. 32,400 Texas Industries, Inc. 33,600 TruStile Doors, Inc. 120,575 -------------- 1,284,853 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 30 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- DIVERSIFIED/CONGLOMERATE, ELECTRONICS - 1.10% MANUFACTURING - 8.61% A123 Systems, Inc. $ 7,462 A H C Holdings Company, Inc. $ 1,441,708 Connecticut Electric, Inc. 633,694 Arrow Tru-Line Holdings, Inc. 732,447 Directed Electronics, Inc. 81,949 C D N T, Inc. 792,028 Electronic Data Systems Corporation 501,014 Douglas Dynamics LLC 417,100 -------------- K P I Holdings, Inc. 867,883 1,224,119 MEGTEC Holdings, Inc. 1,185,515 -------------- Milwaukee Gear Company 1,361,889 FARMING & AGRICULTURE - 1.92% Nortek, Inc. 102,000 Bunge Limited Finance Corporation 576,415 Northwest Mailing Services, Inc. 1,391,230 Waggin' Train Holdings LLC 1,565,381 Postle Aluminum Company LLC 326,974 -------------- Truck Bodies & Equipment International 390,310 2,141,796 Xaloy Superior Holdings, Inc. 614,870 -------------- -------------- FINANCIAL SERVICES - 0.92% 9,623,954 Citigroup, Inc. 511,663 -------------- Goldman Sachs Group, Inc. 521,797 DIVERSIFIED/CONGLOMERATE, SERVICE - 10.53% Highgate Capital LLC -- ACCO Brands Corporation 47,081 -------------- A W X Holdings Corporation 782,744 1,033,460 Advanced Technologies Holdings 1,411,154 -------------- Affinia Group, Inc. 26,813 HEALTHCARE, EDUCATION & CHILDCARE - 6.06% Apex Analytix Holding Corporation 1,042,898 A T I Acquisition Company 2,657,793 C R H America, Inc. 516,065 American Hospice Management Holding LLC 2,060,165 Clough, Harbour and Associates 1,447,967 F H S Holdings LLC 632,813 Corrections Corporation of America 77,438 H C A, Inc. 15,975 Crane Rental Corporation 1,387,692 Synteract Holdings Corporation 1,415,150 Diversco, Inc./DHI Holdings, Inc. 659,713 Touchstone Health Partnership -- Dwyer Group, Inc. 782,926 -------------- Fowler Holding, Inc. -- 6,781,896 Insurance Claims Management, Inc. 78,053 -------------- Iron Mountain, Inc. 540,675 HOME & OFFICE FURNISHINGS, HOUSEWARES, Mail Communications Group, Inc. 716,312 AND DURABLE CONSUMER PRODUCTS - 9.59% Nesco Holdings Corporation 1,580,506 Connor Sport Court International, Inc. 1,371,094 Pearlman Enterprises, Inc. -- H M Holding Company -- Tyco International Group 675,269 Home Decor Holding Company 1,192,207 -------------- Justrite Manufacturing Acquisition Co. 940,748 11,773,306 K H O F Holdings, Inc. 1,396,640 -------------- Monessen Holding Corporation 1,367,894 Stanton Carpet Holding Co. 1,122,450 Transpac Holdings Company 797,853 U M A Enterprises, Inc. 915,537 U-Line Corporation 847,025 Wellborn Forest Holding Co. 774,563 -------------- 10,726,011 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 31 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- LEISURE, AMUSEMENT, ENTERTAINMENT - 2.56% NATURAL RESOURCES - 2.17% International Game Technology $ 554,075 Appleton Papers, Inc. $ 204,841 MGM Mirage, Inc. 86,650 Cenveo Corporation 42,300 Savage Sports Holding, Inc. 1,477,427 Cytec Industries, Inc. 648,124 Ticketmaster Entertainment, Inc. 256,250 Intrepid Potash, Inc. 4,364 Tunica-Biloxi Gaming Authority 486,000 Lubrizol Corporation 617,191 -------------- Newpage Corporation 365,625 2,860,402 The Valspar Corporation 541,980 -------------- -------------- MACHINERY - 9.88% 2,424,425 A S A P Industries LLC 689,309 -------------- Davis-Standard LLC 1,606,776 OIL & GAS - 2.61% E S P Holdco, Inc. 1,240,149 Denbury Resources, Inc. 26,562 Integration Technology Systems, Inc. -- International Offshore Services LLC 1,390,516 K-Tek Holdings Corporation 1,468,372 Quicksilver Resources, Inc. 303,625 M V I Holding, Inc. 730,112 Total E & S, Inc. 718,641 Manitowoc Company, Inc. 86,500 Transocean, Inc. 476,250 Navis Global 154,446 -------------- NetShape Technologies, Inc. 639,623 2,915,594 Pacific Consolidated Holdings LLC 675,760 -------------- Power Services Holding Company 1,425,739 PHARMACEUTICALS - 1.29% R E I Delaware Holding, Inc. 1,396,183 CorePharma LLC 1,445,669 Safety Speed Cut Manufacturing Company, Inc. 264,562 -------------- Stewart & Stevenson LLC 676,200 PUBLISHING/PRINTING - 0.24% -------------- Gannett Company, Inc. 83,300 11,053,731 Sheridan Acquisition Corporation 189,000 -------------- -------------- MEDICAL DEVICES/BIOTECH - 3.76% 272,300 Coeur, Inc. 692,684 -------------- E X C Acquisition Corporation 140,506 RETAIL STORES - 1.02% ETEX Corporation -- CVS Caremark Corporation 535,252 MedSystems Holdings LLC 739,150 Olympic Sales, Inc. 113,273 MicroGroup, Inc. 1,896,515 Rental Service Corporation 168,875 OakRiver Technology, Inc. 731,807 United Rentals, Inc. 325,812 TherOX, Inc. -- -------------- -------------- 1,143,212 4,200,662 -------------- -------------- TECHNOLOGY - 2.69% MINING, STEEL, IRON & NON PRECIOUS Compucom Systems, Inc. 624,775 METALS - 2.57% Sencore Holding Company 870,543 Allegheny Technology, Inc. 566,085 Smart Source Holdings LLC 1,518,425 T H I Acquisition, Inc. 1,389,699 -------------- Teck Cominco, Ltd. 107,575 3,013,743 Tube City IMS Corporation 810,000 -------------- 2,873,359 ------------------------------------------------------------------------------------------------------------------------------------ 32 MassMutual Participation Investors CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2009 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- TELECOMMUNICATIONS - 2.93% WASTE MANAGEMENT / POLLUTION - 2.54% All Current Holding Company $ 736,118 Allied Waste NA $ 527,500 Intelsat Bermuda Ltd. 677,925 Terra Renewal LLC 1,306,925 ITC^DeltaCom, Inc. 122,019 Torrent Group Holdings, Inc. 1,007,561 Telecorps Holdings, Inc. 1,737,701 -------------- -------------- 2,841,986 3,273,763 -------------- -------------- TRANSPORTATION - 2.01% NABCO, Inc. 323,769 Tangent Rail Corporation 1,926,570 TOTAL INVESTMENTS - 104.47% $ 116,826,928 -------------- ============== 2,250,339 -------------- UTILITIES - 0.70% Allegheny Energy Supply 550,790 El Paso Corporation 28,561 Inergy LP 75,375 Markwest Energy Operating Co. 32,725 N R G Energy, Inc. 100,375 -------------- 787,826 -------------- See Notes to Consolidated Financial Statements ------------------------------------------------------------------------------------------------------------------------------------ 33 INCOME TAX INFORMATION The aggregate cost of investments is substantially the same for financial reporting and federal income tax purposes as of September 30, 2009. The net unrealized depreciation of investments for financial reporting and federal tax purposes as of September 30, 2009 is $18,328,918 and consists of $11,382,396 appreciation and $29,711,314 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 September 30, 2009: ASSETS TOTAL LEVEL 1 LEVEL 2 LEVEL 3 ----------------------------------------------------------------------------- Restricted Securities $100,634,812 $ -- $ 4,847,147 $95,787,665 Public Securities 16,192,116 568,069 15,624,047 -- ----------------------------------------------------------------------------- TOTAL $116,826,928 $568,069 $20,471,194 $95,787,665 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 $97,424,749 $ -- $ -- $97,424,749 Total gains or losses (realized/unrealized) included in earnings* (6,719,713) -- -- (6,719,713) Purchases, sales, issuances & settlements (net) 5,082,629 -- -- 5,082,629 Transfers in and / or out of Level 3 -- -- -- -- ----------------------------------------------------------------------------- ENDING BALANCE AT 09/30/2009 $95,787,665 $ -- $ -- $95,787,665 *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 09/30/09 is $(5,692,959). 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 has 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 Participation Investors ---------------------------------- By (Signature and Title)* /s/ Michael L. Klofas --------------------------------------------- Michael L. Klofas, President Date November 30, 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 November 30, 2009 ------------------------------------------------------------------ By (Signature and Title)* /s/ James M. Roy --------------------------------------------- James M. Roy, Vice President and Chief Financial Officer Date November 30, 2009 ------------------------------------------------------------------ * PRINT THE NAME AND TITLE OF EACH SIGNING OFFICER UNDER HIS OR HER SIGNATURE.