X0304 4/A 2011-09-30 2011-10-03 0 0001376339 MIMEDX GROUP, INC. MDXG 0000901434 PETIT PARKER H C/O MIMEDX GROUP, INC. 811 LIVINGSTON COURT, SUITE B MARIETTA GA 30067 0 1 1 0 Chief Executive Officer Common Stock 2011-09-30 4 X 0 275000 .73 A 4311922 D Common Stock 2011-09-30 4 X 0 187500 .50 A 4499422 D Stock Option .73 2011-09-30 4 X 0 275000 .73 D 2009-02-24 2019-02-24 Common Stock 275000 3986666 D Stock Option (Common Stock) .50 2011-09-30 4 X 0 187500 .50 D 2009-07-31 2019-07-31 Common Stock 187500 3799166 D Number of shares held directly by Mr. Petit. Mr. Petit also beneficially owns 150,000 shares held by the Parker H. Petit Grantor Trust, of which he serves as the Trustee; 150,000 shares held by Petit Investments LP of which he serves as General Partner and Limited Partner and possesses shared voting and investment control; and 975,000 shares held by Cox Road Partners II LLP, 975,000 shares held by Cox Road Partners LLLP, and 975,000 shares held by Petit Investments LLLP II, limited liability limited partnerships over which Mr. Petit possesses sole voting and investment control. The stock option vested 70% immediately, 15% on February 24, 2010, and 15% on February 24, 2011. The stock option vests and becomes exercisable 25% upon grant and 25% on the next three anniversary dates of the grant. Incorrectly entered the total amount of non-derivitive securites acquired. The amount should have been equal to the amount of derivitive securities disposed of. /s/ Michael J. Senken, by Power of Attorney 2011-04-08