AMENDMENT NO. 2 to STOCK PURCHASE AND ASSET TRANSFER AGREEMENT

Exhibit 10.23

CONFORMED COPY

AMENDMENT NO. 2

to

STOCK PURCHASE AND ASSET TRANSFER AGREEMENT

AMENDMENT NO. 2, dated as of February 20, 2004 (the “Amendment”), to the STOCK PURCHASE AND ASSET TRANSFER AGREEMENT, dated as of November 17, 2003, as amended by Amendment No. 1, dated as of February 2, 2004 (together with the Schedules thereto, the “Agreement”), by and among CIGNA Holdings, Inc., a Delaware corporation (“CIGNA Holdings”), Connecticut General Corporation, a Connecticut corporation and a wholly owned subsidiary of CIGNA Holdings (“Connecticut General”), Connecticut General Life Insurance Company, a specially-chartered Connecticut corporation and a wholly owned subsidiary of Connecticut General (“CGLIC”) and CIGNA Corporation, a Delaware corporation (“CIGNA” and, together with Connecticut General, CIGNA Holdings and CGLIC, “Sellers”) and Prudential Financial, Inc., a New Jersey corporation (“Buyer”).

WHEREAS, the parties desire to amend the Agreement to reflect certain additional or modified terms.

NOW, THEREFORE, in consideration of the foregoing premises and the mutual promises and covenants set forth herein and in the Agreement, and in reliance upon the representations, warranties, conditions and covenants contained herein and in the Agreement, and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto, intending to be legally bound, do hereby agree as follows:

-1-