Mary D. Petryszyn is President at NORTHROP GRUMMAN CORP /DE/ (NOC). They have made 8 open-market trades across 2 companies since 2020, most recently 2026-10-01.
CIK 0001791724
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $19K since 2026, against 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NOC | 16,251 | $8.5M |
| WWD | 3,060 | $999K |
| KRMN | 2,863 | $98K |
| Total | $9.6M |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| KRMN | BUY | 2026-09-16 | 2026-09-18 | $37.44 | $19K | -10.8% | -6.7% | — |
| NOC | SELL | 2023-02-15 | 2023-02-17 | $465.92 | $798K | -1.4% | -5.4% | -6.6% |
| NOC | SELL | 2022-02-28 | 2022-03-02 | $414.31 | $519K | -2.4% | +0.5% | +3.4% |
| NOC | SELL | 2022-02-16 | 2022-02-17 | $384.99 | $129K | +14.1% | +12.4% | +14.4% |
| NOC | SELL | 2021-08-05 | 2021-08-09 | $358.65 | $640K | +0.2% | +0.1% | +0.8% |
| NOC | SELL | 2021-02-04 | 2021-02-08 | $302.93 | $526K | -0.6% | +0.3% | +25.0% |
| NOC | SELL | 2020-02-18 | 2020-02-20 | $370.95 | $445K | -8.7% | -25.2% | -11.2% |
| NOC | SELL | 2020-02-10 | 2020-02-11 | $362.27 | $2.8M | -2.2% | -17.5% | -10.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.