Northrop Grumman insider activity
What the executives and directors of Northrop Grumman actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$26M
net open-market flow, 12 m
0 open-market buys, 12 m
36%
of sale value on 10b5-1 plans, 12 m
3,218 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 95 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Jun 30, 2026 | KRISHNA ARVIND | 71 |
| Jun 30, 2026 | Brown Marianne Catherine | 91 |
| May 20, 2026 | SCHOEWE THOMAS M | 349 |
| May 20, 2026 | ABNEY DAVID P | 349 |
| May 20, 2026 | WINSTON MARY A | 349 |
| May 20, 2026 | Ross Kimberly A. | 349 |
| May 20, 2026 | ROUGHEAD GARY | 349 |
| May 20, 2026 | Turley James S | 349 |
| May 20, 2026 | KRISHNA ARVIND | 349 |
| May 20, 2026 | WELSH MARK A III | 349 |
| May 20, 2026 | Brown Marianne Catherine | 349 |
| May 20, 2026 | Grady Christopher W. | 349 |
| Mar 31, 2026 | KRISHNA ARVIND | 53 |
| Mar 31, 2026 | Brown Marianne Catherine | 68 |
| Feb 17, 2026 | Warden Kathy J | 16K |
| Feb 17, 2026 | Hardesty Michael A | 781 |
| Feb 17, 2026 | Jones Thomas H | 3,157 |
| Feb 17, 2026 | ROEDER ROSHAN S | 3,009 |
| Feb 17, 2026 | Simpson Kathryn G | 580 |
| Feb 17, 2026 | Fleming Robert J. | 349 |
| Feb 17, 2026 | Davies Benjamin R. | 397 |
| Feb 12, 2026 | Grady Christopher W. | 71 |
| Feb 11, 2026 | Warden Kathy J | 50K |
| Feb 11, 2026 | Hardesty Michael A | 2,293 |
| Feb 11, 2026 | Jones Thomas H | 9,969 |
| Feb 11, 2026 | ROEDER ROSHAN S | 9,444 |
| Feb 11, 2026 | Simpson Kathryn G | 1,796 |
| Feb 11, 2026 | Fleming Robert J. | 1,213 |
| Feb 11, 2026 | Davies Benjamin R. | 4,372 |
| Dec 31, 2025 | KRISHNA ARVIND | 64 |
| Dec 31, 2025 | Brown Marianne Catherine | 81 |
| Dec 5, 2025 | ROEDER ROSHAN S | 487 |
| Sep 30, 2025 | KRISHNA ARVIND | 59 |
| Sep 30, 2025 | Brown Marianne Catherine | 76 |
| Jun 30, 2025 | KRISHNA ARVIND | 73 |
| Jun 30, 2025 | Brown Marianne Catherine | 93 |
| Jun 16, 2025 | Jones Thomas H | 616 |
| May 21, 2025 | SCHOEWE THOMAS M | 385 |
| May 21, 2025 | KLEINER MADELEINE | 385 |
| May 21, 2025 | FUDGE ANN M | 385 |
| May 21, 2025 | ABNEY DAVID P | 385 |
| May 21, 2025 | WINSTON MARY A | 385 |
| May 21, 2025 | Ross Kimberly A. | 385 |
| May 21, 2025 | ROUGHEAD GARY | 385 |
| May 21, 2025 | Turley James S | 385 |
| May 21, 2025 | KRISHNA ARVIND | 385 |
| May 21, 2025 | WELSH MARK A III | 385 |
| May 21, 2025 | Brown Marianne Catherine | 385 |
| Mar 31, 2025 | KRISHNA ARVIND | 71 |
| Mar 31, 2025 | Brown Marianne Catherine | 90 |
| Mar 31, 2025 | Robinson Graham | 43 |
| Feb 18, 2025 | Warden Kathy J | 56K |
| Feb 18, 2025 | Hardesty Michael A | 2,864 |
| Feb 18, 2025 | Jones Thomas H | 12K |
| Feb 18, 2025 | ROEDER ROSHAN S | 1,310 |
| Feb 18, 2025 | Simpson Kathryn G | 2,094 |
| Feb 18, 2025 | Fleming Robert J. | 1,192 |
| Feb 18, 2025 | Davies Benjamin R. | 1,297 |
| Feb 18, 2025 | Crews Kenneth B. | 1,115 |
| Dec 31, 2024 | KRISHNA ARVIND | 77 |
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
The chart, in numbers
| Flow | Shares |
|---|---|
| Granted | 4,124 |
| Vested / exercised | 72K |
| Withheld for tax | 32K |
| Planned sales (10b5-1) | 15K |
| Discretionary sales | 24K |
| Kept | 5,582 |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| Warden Kathy J | 116K | 197K | 169.8 |
| KLEINER MADELEINE | 19K | 21K | 111.1 |
| SCHOEWE THOMAS M | 14K | 17K | 115.8 |
| ROUGHEAD GARY | 10K | 12K | 122 |
Who holds what
the 14 largest holdings of 23| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| Warden Kathy J President and CEO Last trade Feb 6, 2026 | CEO | 202K | – | $20M | net selling over the year: 0 months buying, 2 months selling | Feb 6, 2026 |
| KLEINER MADELEINE Last trade May 22, 2019 | Director | 21K | – | – | May 22, 2019 | |
| Keffer David F CVP & Chief Financial Officer | CFO | 18K | – | – | – | |
| SCHOEWE THOMAS M Last trade Nov 8, 2012 | Director | 17K | – | – | Nov 8, 2012 | |
| Caylor Mark A CVP & Pres, Mission Systems Last trade Feb 21, 2024 | Officer | 16K | – | – | Feb 21, 2024 | |
| ROUGHEAD GARY | Director | 12K | – | – | – | |
| Jones Thomas H CVP & Pres Aeronautics Systems Last trade Jul 17, 2025 | Officer | 12K | – | – | Jul 17, 2025 | |
| Brown Marianne Catherine | Director | 12K | – | – | – | |
| Turley James S | Director | 6,738 | – | – | – | |
| FUDGE ANN M Last trade Nov 29, 2017 | Director | 5,792 | – | – | Nov 29, 2017 | |
| WELSH MARK A III Last trade Aug 3, 2026 | Director | 4,480 | – | $226K | net selling over the year: 0 months buying, 4 months selling | Aug 3, 2026 |
| ABNEY DAVID P | Director | 2,824 | – | – | – | |
| KRISHNA ARVIND | Director | 2,749 | – | – | – | |
| Fleming Robert J. CVP and Pres. Space Systems Last trade Jun 13, 2025 | Officer | 2,704 | – | – | Jun 13, 2025 |
Open-market trade log
the 60 most recent of 1,000| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Aug 3, 2026 | WELSH MARK A III (Director) 2 shares $550.68 −0.2% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 2 | $550.68 | $1K | −0.2% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 2 shares $552.95 −0.6% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 2 | $552.95 | $1K | −0.6% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 2 shares $553.90 −0.8% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 2 | $553.90 | $1K | −0.8% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 4 shares $554.14 −0.8% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 4 | $554.14 | $2K | −0.8% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 6 shares $549.50 +0.0% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 6 | $549.50 | $3K | +0.0% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 8 shares $544.53 +0.9% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 8 | $544.53 | $4K | +0.9% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 10 shares $548.32 +0.2% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 10 | $548.32 | $5K | +0.2% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 11 shares $546.42 +0.6% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 11 | $546.42 | $6K | +0.6% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 19 shares $545.59 +0.7% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 19 | $545.59 | $10K | +0.7% | Aug 4, 2026 |
| Aug 3, 2026 | WELSH MARK A III (Director) 31 shares $547.42 +0.4% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 31 | $547.42 | $17K | +0.4% | Aug 4, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 1 shares $566.60 −3.0% since trade filed May 5, 2026 | Planned sale (10b5-1) | 1 | $566.60 | $567 | −3.0% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 1 shares $577.05 −4.8% since trade filed May 5, 2026 | Planned sale (10b5-1) | 1 | $577.05 | $577 | −4.8% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 2 shares $574.51 −4.4% since trade filed May 5, 2026 | Planned sale (10b5-1) | 2 | $574.51 | $1K | −4.4% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 3 shares $571.74 −3.9% since trade filed May 5, 2026 | Planned sale (10b5-1) | 3 | $571.74 | $2K | −3.9% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 4 shares $575.59 −4.5% since trade filed May 5, 2026 | Planned sale (10b5-1) | 4 | $575.59 | $2K | −4.5% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 5 shares $568.75 −3.4% since trade filed May 5, 2026 | Planned sale (10b5-1) | 5 | $568.75 | $3K | −3.4% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 6 shares $572.72 −4.1% since trade filed May 5, 2026 | Planned sale (10b5-1) | 6 | $572.72 | $3K | −4.1% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 7 shares $576.38 −4.7% since trade filed May 5, 2026 | Planned sale (10b5-1) | 7 | $576.38 | $4K | −4.7% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 9 shares $569.49 −3.5% since trade filed May 5, 2026 | Planned sale (10b5-1) | 9 | $569.49 | $5K | −3.5% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 14 shares $573.51 −4.2% since trade filed May 5, 2026 | Planned sale (10b5-1) | 14 | $573.51 | $8K | −4.2% | May 5, 2026 |
| May 4, 2026 | WELSH MARK A III (Director) 43 shares $570.47 −3.7% since trade filed May 5, 2026 | Planned sale (10b5-1) | 43 | $570.47 | $25K | −3.7% | May 5, 2026 |
| Mar 2, 2026 | Simpson Kathryn G (Officer) 873 shares $745.00 −26.2% since trade filed Mar 3, 2026 | Planned sale (10b5-1) | 873 | $745.00 | $650K | −26.2% | Mar 3, 2026 |
| Feb 27, 2026 | ROEDER ROSHAN S (Officer) 1,754 shares $720.00 −23.7% since trade filed Mar 2, 2026 | Planned sale (10b5-1) | 1,754 | $720.00 | $1.3M | −23.7% | Mar 2, 2026 |
| Feb 19, 2026 | Hardesty Michael A (Officer) 147 shares $732.98 −25.0% since trade filed Feb 20, 2026 | Discretionary sale | 147 | $732.98 | $108K | −25.0% | Feb 20, 2026 |
| Feb 19, 2026 | ROEDER ROSHAN S (Officer) 512 shares $727.62 −24.5% since trade filed Feb 20, 2026 | Planned sale (10b5-1) | 512 | $727.62 | $373K | −24.5% | Feb 20, 2026 |
| Feb 19, 2026 | Simpson Kathryn G (Officer) 194 shares $727.62 −24.5% since trade filed Feb 20, 2026 | Planned sale (10b5-1) | 194 | $727.62 | $141K | −24.5% | Feb 20, 2026 |
| Feb 18, 2026 | Davies Benjamin R. (Officer) 2,189 shares $719.61 −23.6% since trade filed Feb 19, 2026 | Discretionary sale | 2,189 | $719.61 | $1.6M | −23.6% | Feb 19, 2026 |
| Feb 17, 2026 | Hardesty Michael A (Officer) 716 shares $700.63 −21.6% since trade filed Feb 19, 2026 | Discretionary sale | 716 | $700.63 | $502K | −21.6% | Feb 19, 2026 |
| Feb 17, 2026 | ROEDER ROSHAN S (Officer) 318 shares $702.56 −21.8% since trade filed Feb 19, 2026 | Planned sale (10b5-1) | 318 | $702.56 | $223K | −21.8% | Feb 19, 2026 |
| Feb 17, 2026 | Simpson Kathryn G (Officer) 779 shares $702.56 −21.8% since trade filed Feb 19, 2026 | Planned sale (10b5-1) | 779 | $702.56 | $547K | −21.8% | Feb 19, 2026 |
| Feb 13, 2026 | Hardesty Michael A (Officer) 1 shares $703.21 −21.9% since trade filed Feb 17, 2026 | Discretionary sale | 1 | $703.21 | $408 | −21.9% | Feb 17, 2026 |
| Feb 13, 2026 | Hardesty Michael A (Officer) 783 shares $702.43 −21.8% since trade filed Feb 17, 2026 | Discretionary sale | 783 | $702.43 | $550K | −21.8% | Feb 17, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 214 shares $705.84 −22.2% since trade filed Feb 10, 2026 | Discretionary sale | 214 | $705.84 | $151K | −22.2% | Feb 10, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 1,306 shares $711.14 −22.7% since trade filed Feb 10, 2026 | Discretionary sale | 1,306 | $711.14 | $929K | −22.7% | Feb 10, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 2,196 shares $706.65 −22.2% since trade filed Feb 10, 2026 | Discretionary sale | 2,196 | $706.65 | $1.6M | −22.2% | Feb 10, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 2,303 shares $708.63 −22.5% since trade filed Feb 10, 2026 | Discretionary sale | 2,303 | $708.63 | $1.6M | −22.5% | Feb 10, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 3,552 shares $710.36 −22.6% since trade filed Feb 10, 2026 | Discretionary sale | 3,552 | $710.36 | $2.5M | −22.6% | Feb 10, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 4,695 shares $707.45 −22.3% since trade filed Feb 10, 2026 | Discretionary sale | 4,695 | $707.45 | $3.3M | −22.3% | Feb 10, 2026 |
| Feb 6, 2026 | Warden Kathy J (CEO) 5,734 shares $709.49 −22.6% since trade filed Feb 10, 2026 | Discretionary sale | 5,734 | $709.49 | $4.1M | −22.6% | Feb 10, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 2 shares $676.14 −18.7% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 2 | $676.14 | $1K | −18.7% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 2 shares $677.43 −18.9% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 2 | $677.43 | $1K | −18.9% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 4 shares $680.49 −19.3% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 4 | $680.49 | $3K | −19.3% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 5 shares $689.31 −20.3% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 5 | $689.31 | $3K | −20.3% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 6 shares $683.79 −19.6% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 6 | $683.79 | $4K | −19.6% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 7 shares $684.67 −19.7% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 7 | $684.67 | $5K | −19.7% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 8 shares $681.68 −19.4% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 8 | $681.68 | $5K | −19.4% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 8 shares $687.64 −20.1% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 8 | $687.64 | $6K | −20.1% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 10 shares $685.33 −19.8% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 10 | $685.33 | $7K | −19.8% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 10 shares $688.51 −20.2% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 10 | $688.51 | $7K | −20.2% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 11 shares $686.43 −20.0% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 11 | $686.43 | $8K | −20.0% | Feb 3, 2026 |
| Feb 2, 2026 | WELSH MARK A III (Director) 22 shares $682.47 −19.5% since trade filed Feb 3, 2026 | Planned sale (10b5-1) | 22 | $682.47 | $15K | −19.5% | Feb 3, 2026 |
| Jan 6, 2026 | Warden Kathy J (CEO) 3,000 shares $615.00 −10.7% since trade filed Jan 7, 2026 | Planned sale (10b5-1) | 3,000 | $615.00 | $1.8M | −10.7% | Jan 7, 2026 |
| Jan 5, 2026 | Warden Kathy J (CEO) 7,000 shares $600.00 −8.4% since trade filed Jan 7, 2026 | Planned sale (10b5-1) | 7,000 | $600.00 | $4.2M | −8.4% | Jan 7, 2026 |
| Dec 9, 2025 | ROEDER ROSHAN S (Officer) 84 shares $555.35 −1.1% since trade filed Dec 11, 2025 | Planned sale (10b5-1) | 84 | $555.35 | $47K | −1.1% | Dec 11, 2025 |
| Nov 24, 2025 | WELSH MARK A III (Director) 1 shares $560.39 −1.9% since trade filed Nov 25, 2025 | Planned sale (10b5-1) | 1 | $560.39 | $560 | −1.9% | Nov 25, 2025 |
| Nov 24, 2025 | WELSH MARK A III (Director) 1 shares $566.15 −2.9% since trade filed Nov 25, 2025 | Planned sale (10b5-1) | 1 | $566.15 | $566 | −2.9% | Nov 25, 2025 |
| Nov 24, 2025 | WELSH MARK A III (Director) 6 shares $561.51 −2.1% since trade filed Nov 25, 2025 | Planned sale (10b5-1) | 6 | $561.51 | $3K | −2.1% | Nov 25, 2025 |
| Nov 24, 2025 | WELSH MARK A III (Director) 7 shares $562.52 −2.3% since trade filed Nov 25, 2025 | Planned sale (10b5-1) | 7 | $562.52 | $4K | −2.3% | Nov 25, 2025 |
| Nov 24, 2025 | WELSH MARK A III (Director) 9 shares $563.62 −2.5% since trade filed Nov 25, 2025 | Planned sale (10b5-1) | 9 | $563.62 | $5K | −2.5% | Nov 25, 2025 |
| Nov 24, 2025 | WELSH MARK A III (Director) 12 shares $565.31 −2.8% since trade filed Nov 25, 2025 | Planned sale (10b5-1) | 12 | $565.31 | $7K | −2.8% | Nov 25, 2025 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
156 Forms 4, 3 years
1 filed late
0 amendments
1.6 avg. days to file
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.