================================================================================ SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 ----------------- FORM N-PX ----------------- ANNUAL REPORT OF PROXY VOTING RECORD 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 Suite 600 Springfield, MA 01115 (Address of principal executive offices) (Zip code) -------------------------------------------------------------------------------- Rodney J. Dillman, Vice President and Secretary MassMutual Participation Investors 1500 Main Street, Suite 2800, Springfield, MA 01115 -------------------------------------------------------------------------------- (name and address of agent for service) Registrant's telephone number, including area code: 413-226-1516 Date of fiscal year end: December 31 Date of reporting period: July 1, 2007 - June 30, 2008 ================================================================================ ITEM 1. PROXY VOTING RECORD -------------------------------------------------------------------------------- COMCAST CORP. Ticker: CMCSA Security ID: 20030N101 Meeting Date: MAY 14, 2008 Meeting Type: Annual Record Date: MARCH 6, 2008 # Proposal Mgt Rec Vote Cast Sponsor 1. Elect Director S. Decker Anstrom For For Management 2. Elect Director Kenneth J. Bacon For For Management 3. Elect Director Sheldon M. Bonovitz For For Management 4. Elect Director Edward D. Breen For For Management 5. Elect Director Julian A. Brodsky For For Management 6. Elect Director Joseph J. Collins For For Management 7. Elect Director J. Michael Cook For For Management 8. Elect Director Gerald L. Hassell For For Management 9. Elect Director Jeffrey A. Honickman For For Management 10. Elect Director Brian L. Roberts For For Management 11. Elect Director Ralph J. Roberts For For Management 12. Elect Director Dr. Judith Rodin For For Management 13. Elect Director Michael I. Sovern For For Management 14. Ratify Auditors For For Management 15. Amend Restricted Stock Plan For For Management 16. Amend Stock Option Plan For For Management 17. Adopt Recapitalization Plan Against For Shareholder 18. Increase Disclosure of Executive Compensation Against Against Shareholder 19. Require More Director Nominations Than Open Seats Against Against Shareholder 20. Report on Pay Disparity Against Against Shareholder 21. Provide for Cumulative Voting for Class A Shareholders Against For Shareholder 22. Adopt Principles for Health Care Reform Against Against Shareholder 23. Advisory Vote to Ratify Named Executive Officers Against For Shareholder -------------------------------------------------------------------------------- DISTRIBUTED ENERGY SYSTEMS CORP. Ticker: DESCQ Security ID: 25475V104 Meeting Date: AUGUST 21, 2007 Meeting Type: Annual Record Date: JUNE 28, 2007 # Proposal Mgt Rec Vote Cast Sponsor 1. Elect Director Paul F. Koeppe For For Management 2. Elect Director Ambrose L. Schwallie For For Management 3. Approve Issuance of Warrants/Convertible For For Management Debentures 4. Increase Authorized Common Stock For For Management 5. Approve Reverse Split Stock For For Management -------------------------------------------------------------------------------- ENERNOC INC Ticker: ENOC Security ID: 292764107 Meeting Date: MAY 9, 2008 Meeting Type: Annual Record Date: MARCH 17, 2008 # Proposal Mgt Rec Vote Cast Sponsor 1. Elect Director Adam Grosser For For Management 2. Ratify Auditors For For Management -------------------------------------------------------------------------------- ITC DELTACOM, INC. Ticker: ITCD Security ID: 45031T872 Meeting Date: MAY 13, 2008 Meeting Type: Annual Record Date: MARCH 31, 2008 # Proposal Mgt Rec Vote Cast Sponsor 1. Elect Director John Almeida, Jr. For Withhold Management 2. Elect Director Phillip M. Tseng For Withhold Management 3. Elect Director Randall E Curran For Withhold Management 4. Elect Director John J. DeLucca For For Management 5. Elect Director Clyde A. Heintzelman For For Management 6. Elect Director Michael E. Leitner For Withhold Management 7. Elect Director Thomas E. Mcinerney For Withhold Management 8. Elect Director R. Gerald Mccarley For For Management 9. Elect Director Sanjay Swani For Withhold Management SIGNATURES [See General Instruction F] Pursuant to the requirements of 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/ Clifford M. Noreen --------------------------------- Clifford M. Noreen, President Date: August 29, 2008 * Print the name and title of each signing officer under his or her signature.