SUPPLEMENT DATED MAY 29, 2014

to

PROSPECTUSES DATED MAY 1, 2014

FOR SUN LIFE FINANCIAL MASTERS CHOICE, SUN LIFE FINANCIAL MASTERS FLEX,

SUN LIFE FINANCIAL MASTERS EXTRA, MFS REGATTA PLATINUM

AND MFS REGATTA GOLD

PROSPECTUS DATED MAY 1, 2012

FOR MFS REGATTA CHOICE

PROSPECTUSES DATED APRIL 29, 2011

FOR SUN LIFE FINANCIAL MASTERS ACCESS

PROSPECTUS DATED MAY 1, 2008

FOR MFS REGATTA EXTRA

PROSPECTUSES DATED MAY 1, 2007

FOR MFS REGATTA CHOICE II AND MFS REGATTA FLEX II

PROSPECTUS DATED JULY 18, 2006

FOR MFS REGATTA CLASSIC

PROSPECTUSES DATED APRIL 11, 2006, AS SUPPLEMENTED DECEMBER 29, 2006,

AND PROSPECTUSES DATED MAY 1, 2006

FOR SUN LIFE FINANCIAL MASTERS IV AND SUN LIFE FINANCIAL MASTERS VII

PROSPECTUSES DATED MAY 1, 2006

FOR MFS REGATTA FLEX FOUR AND MFS REGATTA ACCESS

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

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

The Board of Trustees of the MFS Variable Insurance Trust II (the “Trust”) approved a proposal to reorganize the following MFS Variable Insurance Trust II Portfolios (each an “Acquired Fund”) into the corresponding Series (each, an “Acquiring Fund”) of the MFS Variable Insurance Trust I listed in the table below. If an Acquiring Fund is not a current investment option under your Contract, it will be added as an investment option immediately prior to the reorganization.

Acquired Fund		Acquiring Fund
MFS® Value Portfolio	to reorganize into	MFS® Value Series
MFS® Utilities Portfolio	to reorganize into	MFS® Utilities Series
MFS® New Discovery Portfolio	to reorganize into	MFS® New Discovery Series

Each of the reorganizations identified in the table above is subject to approval by shareholders at a shareholder’s meeting expected to be held in July, 2014.

If shareholders approve the proposal, all of the assets and liabilities of each Acquired Fund will be transferred to the corresponding Acquiring Fund and shareholders of an Acquired Fund will receive shares of the corresponding Acquiring Fund in exchange for their shares.

THIS SUPPLEMENT SHOULD BE READ AND RETAINED FOR FUTURE REFERENCE.

Masters/Regattas (US)                                                                                                                                          5/2014