ated Dec. 28,2012 (STC signed in a subsequent closing as of April 10,2013) -Amendment to Investors Rights Agreement, dated April 5, 2013 -Right of First Refusal & Co-Sale Agreement, dated Dec. 28, 2012 (STC signed in a subsequent closing as of April 10, 2013) -Amendment to Right of First Refusal & Co-Sale Agreement, dated Apri