X0306 4 2014-10-09 0 0001376339 MIMEDX GROUP, INC. MDXG 0000901434 PETIT PARKER H C/O MIMEDX GROUP, INC. 1775 WEST OAK COMMONS CT., NE MARIETTA GA 30062 1 1 1 0 Chairman & CEO Common Stock 2014-10-09 5 G 0 39240 0.0 D 4484884 D Common Stock 2014-10-29 4 A 0 50000 0.0 A 4534884 D In prior reports, Mr. Petit reported beneficial ownership of 150,000 shares of MDXG common stock owned by Petit Investments LP. The 39,240 shares were distributed to Mr. Petit as a liquidating distribution of Petit Investments LP and were subsequently disposed of by gift. Grant of Restricted Stock, which vests in equal installments over the first three anniversary dates of the grant. Number of shares held directly by Mr. Petit, including 177,705 shares of Restricted Stock, which vest in equal installments over first three anniversary dates of the grants. Mr. Petit also beneficially owns 1,250,000 shares held by Cox Road Partners II LLP, 1,250,000 shares held by Cox Road Partners LLLP, 1,250,000 shares held by Petit Investments LLLP II, and an aggregate of 1,350,000 shares held by six (6) Grantor Retained Annuity Trusts (GRATs). In prior reports, the shares held by the GRATs were reported as held by Mr. Petit directly. /s/ Michael J. Senken, by Power of Attorney 2014-10-31