Air Transport Services Group (ATSG): Red Mountain Capital Sells Chunk of Shares to Issuer

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Page 8 of 10 – SEC Filing

CUSIP No. 00922R105 SCHEDULE 13D/A PAGE
8
OF 10 PAGES

Each of RMCP LLC, RMP and RMCP GP affirms membership in a group with each other but
disclaims membership in a group with RMCM or Mr. Mesdag. Each of RMCM and Mr. Mesdag disclaims membership in a group with any person.

The filing of this Schedule 13D shall not be construed as an admission that any Reporting Person is the beneficial owner of any of the shares
of Common Stock that such Reporting Person may be deemed to beneficially own. Without limiting the foregoing sentence, each of RMCM and Mr. Mesdag disclaims beneficial ownership of all shares of Common Stock reported in this Schedule 13D. In
addition, the filing of this Schedule 13D shall not be construed as an admission that any partner, member, director, officer or affiliate of any Reporting Person is the beneficial owner of any of the shares of Common Stock that such partner, member,
director, officer or affiliate may be deemed to beneficially own. Without limiting the foregoing sentence, Mr. Teets disclaims beneficial ownership of all shares of Common Stock reported in this Schedule 13D.

Item 5(c) of this Schedule 13D is hereby amended to include the following information:

(c) The information set forth below in Item 6 is hereby incorporated by reference in response to this Item 5(c).
ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER

Item 6 of this Schedule 13D is hereby amended to include the following information:

As previously disclosed, on June 21, 2016, RMP entered into a securities purchase agreement with ATSG (the Securities Purchase
Agreement), pursuant to which RMP agreed to sell, and ATSG agreed to repurchase, 3,825,554 shares of Common Stock for an aggregate purchase price of $50,000,000. The consummation of the transactions contemplated by the Securities Purchase
Agreement occurred on July 5, 2016.

The foregoing references to and description of the Securities Purchase Agreement do not purport
to be complete and are subject, and are qualified in their entirety by reference, to the full text of the Securities Purchase Agreement, which is incorporated by reference in this Item 6.

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