X0305 4 2012-06-06 0 0001351285 ROSETTA STONE INC RST 0001184343 GROSS PATRICK W C/O ROSETTA STONE INC. 1919 NORTH LYNN STREET, 7TH FLOOR ARLINGTON VA 22209 1 0 0 0 Common Stock 2012-06-06 4 P 0 10000 14.00 A 10000 I Shares held by wife Common Stock 2012-06-07 4 P 0 20000 13.96 A 30000 I Shares held by wife This transaction was executed in multiple trades at prices ranging from $13.94 to $13.99 per share. The reporting person hereby undertakes to provide upon written request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The reporting person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for the purpose of Section 16 or for any other purpose. Michael C. Wu, Attorney-in-fact 2012-06-08