| Date | Time | Source | Headline | Symbol | Company |
| 10/23/2017 | 6:02AM | Edgar (US Regulatory) | Proxy Soliciting Materials (revised) (prer14a) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 10/20/2017 | 1:46PM | Business Wire | Orbital ATK to Report Third Quarter 2017 Financial Results on November 2 | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 10/17/2017 | 4:43PM | PR Newswire (US) | SHAREHOLDER ALERT: Monteverde & Associates PC Announces An Investigation Of Orbital ATK, Inc. - OA | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 10/13/2017 | 5:19PM | Edgar (US Regulatory) | Additional Proxy Soliciting Materials (definitive) (defa14a) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 10/09/2017 | 4:56PM | PR Newswire (US) | Bernstein Liebhard LLP Announces Investigation Into The Proposed Sale Of Orbital ATK, Inc. | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 10/02/2017 | 5:22PM | Edgar (US Regulatory) | Proxy Statement - Merger or Acquistion (preliminary) (prem14a) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/28/2017 | 4:07PM | Edgar (US Regulatory) | Additional Proxy Soliciting Materials (definitive) (defa14a) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/27/2017 | 8:30AM | Business Wire | Orbital ATK Awarded $350 Million Advanced Anti-Radar Guided Missile Contract | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/25/2017 | 1:57PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/25/2017 | 1:41PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/25/2017 | 1:35PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/22/2017 | 8:30AM | PR Newswire (US) | Financialinsiders.com Earnings Recap Week Ending September 22nd, 2017 | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/21/2017 | 8:30AM | Business Wire | Orbital ATK Successfully Launches Patriot Target Vehicle for Missile Defense Test | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/19/2017 | 5:31PM | PR Newswire (US) | WEISSLAW LLP: Orbital ATK Inc Acquisition May Not Be in the Best Interests of OA Shareholders | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/19/2017 | 3:08PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/19/2017 | 8:30AM | Business Wire | Orbital ATK Receives $123 Million in Orders for Artillery Precision Guidance Kit from the U.S. Army | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/19/2017 | 7:07AM | Dow Jones News | Today's Top Supply Chain and Logistics News From WSJ | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/19/2017 | 3:02AM | Dow Jones News | Northrop's Deal Fuels Space Race -- WSJ | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 10:09PM | Dow Jones News | Northrop Grumman Move to Acquire Rocket Maker Reflects Military Space Race | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 5:31PM | Edgar (US Regulatory) | Additional Proxy Soliciting Materials (definitive) (defa14a) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 5:01PM | PR Newswire (US) | Harwood Feffer LLP Announces Investigation of Orbital ATK, Inc. | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 2:45PM | PR Newswire (US) | ALERT: Rowley Law PLLC is Investigating Proposed Acquisition of Orbital ATK, Inc. | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 1:04PM | Dow Jones News | Northrop Grumman Looks To Get Foothold in Military Space Race | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 8:35AM | Dow Jones News | Northrop Grumman to Buy Orbital ATK for $7.8 Billion -- 2nd Update | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 8:19AM | PR Newswire (US) | Orbital (OA) Alert: Johnson Fistel Investigates Proposed Sale of Orbital ATK, Inc.; Is $134.50 a Fair Price? | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 8:07AM | Dow Jones News | Northrop Grumman to Buy Orbital ATK for $7.8 Billion -- Update | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 7:06AM | Dow Jones News | Northrop Grumman to Buy Orbital ATK for $7.8 Billion | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 6:43AM | PR Newswire (US) | Northrop Grumman to Acquire Orbital ATK for $9.2 Billion | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 6:29AM | Edgar (US Regulatory) | Current Report Filing (8-k) | NYSE:OA | Orbital Atk, Inc. (delisted) |
| 09/18/2017 | 6:27AM | Edgar (US Regulatory) | Additional Proxy Soliciting Materials (definitive) (defa14a) | NYSE:OA | Orbital Atk, Inc. (delisted) |