SOBS Solvay Bank Corporation (PK)

LEGG MASON GLOBAL ASSET MANAGEMENT TRUST

SUPPLEMENT DATED JANUARY 4, 2013

TO THE SUMMARY PROSPECTUS DATED MAY 1, 2012 OF

LEGG MASON BATTERYMARCH EMERGING MARKETS TRUST

The last sentence of the legend on the cover of the fund’s Summary Prospectus is deleted and replaced with the following:

The fund’s Prospectus, dated May 1, 2012, as supplemented on May 31, 2012, and as may be amended or further supplemented, the fund’s statement of additional information, dated May 1, 2012, as supplemented on May 31, 2012, November 28, 2012, and January 4, 2013, and as may be amended or further supplemented, and the independent registered public accounting firm’s report and financial statements in the fund’s annual report to shareholders, dated December 31, 2011, are incorporated by reference into this Summary Prospectus.

Please retain this supplement for future reference.

LMFX015229