Northrop Grumman's three largest insider shareholders as of September 29, 2026 are Kathy J Warden (Chair, Ceo And President, 196.68K shares), Donald E Felsinger (Director, 39.83K shares), Sheila C. Cheston (Corp. Vp General Counsel, 27.06K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Kathy J Warden | Chair, Ceo And President | 196,681 | 0 | 196,681 | 37.7% | 19 Feb, 2026 |
| 2 | Donald E Felsinger | Director | 39,831 | 0 | 39,831 | 7.6% | 19 May, 2022 |
| 3 | Sheila C. Cheston | Corp. Vp General Counsel | 27,058 | 0 | 27,058 | 5.2% | 22 Feb, 2023 |
| 4 | Karl J Krapek | Director | 23,942 | 0 | 23,942 | 4.6% | 04 Apr, 2023 |
| 5 | Madeleine Kleiner | Director | 21,002 | 0 | 21,002 | 4.0% | 21 May, 2025 |
| 6 | Lesley A Kalan | Cvp, Chief Strategy Dev Ofc | 17,933 | 0 | 17,933 | 3.4% | 21 Feb, 2023 |
| 7 | Thomas M Schoewe | Director | 16,737 | 0 | 16,737 | 3.2% | 21 May, 2026 |
| 8 | David F Keffer | Cvp Chief Financial Officer | 16,640 | 0 | 16,640 | 3.2% | 21 Feb, 2024 |
| 9 | Mark A Caylor | Cvp Pres, Mission Systems | 16,432 | 0 | 16,432 | 3.1% | 23 Feb, 2024 |
| 10 | Blake E Larson | Corporate Vice President | 14,843 | 0 | 14,843 | 2.8% | 04 Jan, 2022 |
| 11 | Mary D Petryszyn | Corporate Vice President | 12,592 | 0 | 12,592 | 2.4% | 21 Feb, 2023 |
| 12 | Gary Roughead | Director | 12,210 | 0 | 12,210 | 2.3% | 21 May, 2026 |
| 13 | Ann M Addison | Corp Vp Chief Hr Officer | 12,108 | 0 | 12,108 | 2.3% | 21 Feb, 2023 |
| 14 | Marianne Catherine Brown | Director | 11,558 | 0 | 11,558 | 2.2% | 01 Jul, 2026 |
| 15 | Thomas H Jones | Cvp Pres Aeronautics Systems | 11,205 | 0 | 11,205 | 2.1% | 19 Feb, 2026 |
| 16 | David T Perry | Cvp Chief Global Bus Off | 8,717 | 0 | 8,717 | 1.7% | 08 Mar, 2023 |
| 17 | Shawn N Purvis | Cvp, Pres, Enterprise Svcs | 8,167 | 0 | 8,167 | 1.6% | 17 Feb, 2022 |
| 18 | William H Hernandez | Director | 7,585 | 0 | 7,585 | 1.5% | 19 May, 2022 |
| 19 | James S Turley | Director | 6,738 | 0 | 6,738 | 1.3% | 21 May, 2026 |
| 20 | Ann M Fudge | Director | 5,792 | 0 | 5,792 | 1.1% | 21 May, 2025 |
| 21 | Mark A Iii Welsh | Director | 4,393 | 0 | 4,393 | 0.8% | 04 Aug, 2026 |
| 22 | Lucy C Ryan | Corp Vp, Communications | 4,144 | 0 | 4,144 | 0.8% | 06 Mar, 2023 |
| 23 | Thomas L Jr Wilson | Cvp And Pres. Space Systems | 3,000 | 0 | 3,000 | 0.6% | 21 Feb, 2023 |
| 24 | David P Abney | Director | 2,824 | 0 | 2,824 | 0.5% | 21 May, 2026 |
| 25 | Arvind Krishna | Director | 2,749 | 0 | 2,749 | 0.5% | 01 Jul, 2026 |
| 26 | Kenneth B. Crews | Cvp Chief Financial Officer | 2,645 | 0 | 2,645 | 0.5% | 20 Feb, 2025 |
| 27 | Robert J. Fleming | Cvp And Pres. Space Systems | 2,619 | 0 | 2,619 | 0.5% | 19 Feb, 2026 |
| 28 | Michael A Hardesty | Corp Vp, Controller Cao | 2,525 | 0 | 2,525 | 0.5% | 20 Feb, 2026 |
| 29 | Roshan S Roeder | Cvp Pres. Mission Systems | 2,353 | 0 | 2,353 | 0.5% | 02 Mar, 2026 |
| 30 | Graham Robinson | Director | 1,984 | 0 | 1,984 | 0.4% | 01 Apr, 2025 |
| 31 | Kimberly A. Ross | Director | 1,612 | 0 | 1,612 | 0.3% | 21 May, 2026 |
| 32 | Mary A Winston | Director | 1,609 | 0 | 1,609 | 0.3% | 21 May, 2026 |
| 33 | Matthew Fox Bromberg | Cvp, Global Operations | 1,585 | 0 | 1,585 | 0.3% | 08 May, 2023 |
| 34 | Christopher W. Grady | Director | 421 | 0 | 421 | 0.1% | 21 May, 2026 |
| 35 | Benjamin R. Davies | Cvp Pres. Defense Systems | 151 | 0 | 151 | 0.0% | 19 Feb, 2026 |
| 36 | Kathryn G Simpson | Corp Vp General Counsel | 1 | 0 | 1 | 0.0% | 03 Mar, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 19 Aug, 2026 | Kathy J Warden | Chair, Ceo And President | Acquired A | 35,910 | $0.00 | $0 | 35,910 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 8 | $544.53 | $4.36K | 4,480 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 19 | $545.59 | $10.37K | 4,461 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 11 | $546.42 | $6.01K | 4,450 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 31 | $547.42 | $16.97K | 4,419 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 10 | $548.32 | $5.48K | 4,409 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 6 | $549.50 | $3.30K | 4,403 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 2 | $550.68 | $1.10K | 4,401 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 2 | $552.95 | $1.11K | 4,399 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 2 | $553.90 | $1.11K | 4,397 | Direct |
| 03 Aug, 2026 | Mark A Iii Welsh | Director | Disposed S | 4 | $554.14 | $2.22K | 4,393 | Direct |
| 30 Jun, 2026 | Marianne Catherine Brown | Director | Acquired A | 91 | $509.31 | $46.35K | 11,558 | Direct |
| 30 Jun, 2026 | Arvind Krishna | Director | Acquired A | 71 | $509.31 | $36.16K | 2,749 | Direct |
| 20 May, 2026 | Christopher W. Grady | Director | Acquired A | 349 | $552.17 | $192.71K | 421 | Direct |
| 20 May, 2026 | James S Turley | Director | Acquired A | 349 | $552.17 | $192.71K | 6,738 | Direct |
| 20 May, 2026 | David P Abney | Director | Acquired A | 349 | $552.17 | $192.71K | 2,824 | Direct |
| 20 May, 2026 | Thomas M Schoewe | Director | Acquired A | 349 | $552.17 | $192.71K | 16,737 | Direct |
| 20 May, 2026 | Arvind Krishna | Director | Acquired A | 349 | $552.17 | $192.71K | 2,666 | Direct |
| 20 May, 2026 | Mark A Iii Welsh | Director | Acquired A | 349 | $552.17 | $192.71K | 4,470 | Direct |
| 20 May, 2026 | Kimberly A. Ross | Director | Acquired A | 349 | $552.17 | $192.71K | 1,612 | Direct |