SUPPLEMENT DATED APRIL 30, 2012

to

PROSPECTUSES DATED APRIL 29, 2011

FOR SUN LIFE FINANCIAL MASTERS ACCESS AND SUN LIFE FINANCIAL MASTERS EXTRA II

ISSUED BY SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

SUN LIFE OF CANADA (U.S.) VARIABLE ACCOUNT F

On January 17, 2012, the Board of Trustees of the Huntington Funds approved a proposal to reorganize the Huntington VA New Economy Fund into the Huntington VA Mid Corp America Fund after the close of business on April 27, 2012.

Therefore, Huntington VA New Economy Fund is no longer available for investment and all references to the fund are hereby deleted from each prospectus listed above.

Please retain this supplement with your prospectus for future reference.

Masters Access Masters Extra II 5/2012