X0303 4 2008-10-03 0 0000275694 MASSMUTUAL CORPORATE INVESTORS MCI 0000225602 MASSACHUSETTS MUTUAL LIFE INSURANCE CO 1295 STATE STREET SPRINGFIELD MA 01111 0 0 0 1 See Footer 0000009015 BABSON CAPITAL MANAGEMENT LLC 1500 MAIN STREET SPRINGFIELD MA 01115 0 0 0 1 Advisor the to Issuer Shares of Beneficial Interest ("Common Shares") 2008-10-03 4 P 0 3700 24.22 A 8033.00 I By Babson Capital Management LLC Shares of Beneficial Interest ("Common Shares") 2008-10-06 4 P 0 4533 23.95 A 12566.00 I By Babson Capital Management LLC Senior Fixed Rate Convertible Note Due 11/15/2017 1.00 D Shares of Beneficial Interest ("Common Shares") 27009.00 I By Cornerstone Real Estate Advisers LLC Represents average price. Actual purchase prices ranged from $24.21 to $ 24.54. Babson Capital undertakes to provide full information upon request. Purchased pursuant to Rule 10b5-1 Plan for Babson Capital, the investment adviser to Issuer and wholly-owned indirect subsidiary of MassMutual. The inclusion of the Babson Capital held securities of the Issuer shall not be construed as an admission that MassMutual or Cornerstone Real Estate Advisers LLC ("Cornerstone") is for the purpose of Section 16 of the Securities Exchange Act of 1934, the direct or indirect beneficial owner of any of the securities of the Issuer beneficially owned by Babson Capital. Represents average price. Actual purchase prices ranged from $23.51 to $ 24.01. Babson Capital undertakes to provide full information upon request. Note held by MassMutual that is convertible based on average price of Issuer's common shares ten days prior to exercise. Cornerstone is a wholly-owned indirect subsidiary of MassMutual. This a joint filing made on behalf of Massachusetts Mutual Life Insurance Company ("MassMutual") and Babson Capital Management LLC ("Babson Capital"). By: Christopher DeFrancis, Vice President and Assistant General Counsel 2008-10-07 By: James Masur, Chief Operating Officer & Chief Compliance Officer 2008-10-07