| SC 13G/A | 2015-02-17 | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | Air Transport Services Group, Inc. | 6,217,933 | 9.6% | EDGAR |
| SC 13G | 2015-02-11 | VANGUARD GROUP INC | Air Transport Services Group, Inc. | 3,374,991 | 5.2% | EDGAR |
| SC 13G/A | 2015-02-05 | DIMENSIONAL FUND ADVISORS LP | Air Transport Services Group, Inc. | 3,644,947 | 5.6% | EDGAR |
| SC 13G | 2014-02-10 | DIMENSIONAL FUND ADVISORS LP | Air Transport Services Group, Inc. | 3,285,498 | 5.1% | EDGAR |
| SC 13G/A | 2013-04-10 | BlackRock Inc. | Air Transport Services Group, Inc. | 3,142,593 | 4.9% | EDGAR |
| SC 13G/A | 2013-02-14 | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | Air Transport Services Group, Inc. | 5,786,687 | 9.0% | EDGAR |
| SC 13G/A | 2013-02-11 | NORTHPOINTE CAPITAL LLC | Air Transport Services Group, Inc. | 0 | 0.0% | EDGAR |
| SC 13G | 2013-01-30 | BlackRock Inc. | Air Transport Services Group, Inc. | 3,274,210 | 5.1% | EDGAR |
| SC 13D/A | 2012-08-14 | RED MOUNTAIN CAPITAL PARTNERS LLC | Air Transport Services Group, Inc. | 10,850,425 | 16.9% | EDGAR |
| SC 13D/A | 2012-06-18 | RED MOUNTAIN CAPITAL PARTNERS LLC | Air Transport Services Group, Inc. | 9,552,730 | 14.9% | EDGAR |
| SC 13G/A | 2012-02-14 | FMR LLC | Air Transport Services Group, Inc. | 1,279,248 | 2.0% | EDGAR |
| SC 13G | 2012-02-10 | NORTHPOINTE CAPITAL LLC | Air Transport Services Group, Inc. | 4,823,070 | 7.5% | EDGAR |
| SC 13G/A | 2012-02-07 | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | Air Transport Services Group, Inc. | 5,420,629 | 8.5% | EDGAR |
| SC 13D/A | 2011-08-29 | RED MOUNTAIN CAPITAL PARTNERS LLC | Air Transport Services Group, Inc. | 9,437,730 | 14.7% | EDGAR |
| SC 13G/A | 2011-03-09 | BlackRock Inc. | Air Transport Services Group, Inc. | 3,113,375 | 4.9% | EDGAR |
| SC 13G/A | 2011-02-14 | PRESCOTT GROUP CAPITAL MANAGEMENT LLC | Air Transport Services Group, Inc. | 4,690,540 | 7.4% | EDGAR |
| SC 13G | 2011-02-14 | FMR LLC | Air Transport Services Group, Inc. | 3,915,070 | 6.1% | EDGAR |
| SC 13G | 2011-02-03 | BlackRock Inc. | Air Transport Services Group, Inc. | 3,486,419 | 5.5% | EDGAR |
| SC 13G/A | 2010-02-12 | PRESCOTT GROUP CAPITAL MANAGEMENT LLC | Air Transport Services Group, Inc. | 7,112,892 | 11.2% | EDGAR |
| SC 13D/A | 2009-06-01 | RED MOUNTAIN CAPITAL PARTNERS LLC | Air Transport Services Group, Inc. | 7,882,230 | 12.5% | EDGAR |