13D Filing: Nierenberg Investment Management and Rosetta Stone Inc (RST)

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SIGNATURE
After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in the Statement is true, complete and correct.
D3 Family Fund, L.P., D3 Family Bulldog
Fund, L.P.,
By: Nierenberg Investment Management
Company, Inc.
Its: General Partner


December 1, 2017          By: /s/ David Nierenberg
————————-                                                                          ——————————————-
                       David Nierenberg, President
DIII Offshore Fund, L.P.
By: Nierenberg Investment Management
Offshore, Inc.
Its: General Partner
December 1, 2017          By: /s/ David Nierenberg
————————-                                                                          ——————————————-
                       David Nierenberg, President
Nierenberg Investment Management
 Company, Inc.
December 1, 2017          By: /s/ David Nierenberg
————————-                                                                          ——————————————-
                       David Nierenberg, President
Nierenberg Investment Management
  Offshore, Inc.
December 1, 2017         By: /s/ David Nierenberg
————————-                                                                          ——————————————-
                        David Nierenberg, President
 December 1, 2017                                                                             /s/ David Nierenberg
 ————————–                                        ——————————————-
                                                                                                                  David Nierenberg

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