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Arphra AIPlain-English read on Northrop Grumman Corporation’s valuationInsider signal · 90d
Net sellers
Bought
$0
Sold
$54.3K
Txns
11
Over the trailing 90 days insiders are net sellers — $0 bought against $54.3K sold across 11 open-market Form-4 transactions. Much insider selling is scheduled (10b5-1); read the asymmetry, not any single print.
Open-market Form 4
· insider_tradesInsider transactions · last 365d
Net −$34.6M0 buys
| Insider | Role | Type | Shares | Value | Date |
|---|---|---|---|---|---|
| WELSH MARK A III | director | Sell | −6 | $3.4K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −5 | $2.8K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −4 | $2.3K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −3 | $1.7K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −2 | $1.1K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −1 | $577 | May 04, 2026 |
| WELSH MARK A III | director | Sell | −1 | $567 | May 04, 2026 |
| WELSH MARK A III | director | Sell | −43 | $24.5K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −14 | $8.0K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −9 | $5.1K | May 04, 2026 |
| WELSH MARK A III | director | Sell | −7 | $4.0K | May 04, 2026 |
| Simpson Kathryn G | officer: Corp VP & General Counsel | Sell | −873 | $650.4K | Mar 02, 2026 |
| ROEDER ROSHAN S | officer: CVP & Pres. Mission Systems | Sell | −1,754 | $1.3M | Feb 27, 2026 |
| Simpson Kathryn G | officer: Corp VP & General Counsel | Sell | −194 | $141.2K | Feb 19, 2026 |
Transaction mix · 365d
100%
Sells62 · $34.6M
Buys0 · $0
Top sellers · 365d
Warden Kathy J · director, officer: Chair, CEO and President−$25.9M
ROEDER ROSHAN S · officer: CVP & Pres. Mission Systems−$1.9M
Fleming Robert J. · officer: CVP and Pres. Space Systems−$1.8M
Transactions
62
0 buys · 62 sells
Bought
$0
Open market
Sold
$34.56M
Open market
Net flow
−$34.56M
Buys − sells
Transactions
| Insider | Role | Action | Shares | Price | Value | Trade date | Filing |
|---|---|---|---|---|---|---|---|
| WELSH MARK A III | director | Sell | 6 | $572.72 | $3.44K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 5 | $568.75 | $2.84K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 4 | $575.59 | $2.3K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 3 | $571.74 | $1.72K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 2 | $574.51 | $1.15K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 1 | $577.05 | $577.05 | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 1 | $566.60 | $566.6 | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 43 | $570.47 | $24.53K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 14 | $573.51 | $8.03K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 9 | $569.49 | $5.13K | May 04, 2026 | May 05, 2026 |
| WELSH MARK A III | director | Sell | 7 | $576.38 | $4.03K | May 04, 2026 | May 05, 2026 |
| Simpson Kathryn G | officer: Corp VP & General Counsel | Sell | 873 | $745.00 | $650.39K | Mar 02, 2026 | Mar 03, 2026 |
| ROEDER ROSHAN S | officer: CVP & Pres. Mission Systems | Sell | 1,754 | $720.00 | $1.26M | Feb 27, 2026 | Mar 02, 2026 |
| Simpson Kathryn G | officer: Corp VP & General Counsel | Sell | 194 | $727.62 | $141.16K | Feb 19, 2026 | Feb 20, 2026 |
| Hardesty Michael A | officer: Corp VP, Controller & CAO | Sell | 147 | $732.98 | $107.75K | Feb 19, 2026 | Feb 20, 2026 |
| ROEDER ROSHAN S | officer: CVP & Pres. Mission Systems | Sell | 512 | $727.62 | $372.54K | Feb 19, 2026 | Feb 20, 2026 |
| Davies Benjamin R. | officer: CVP & Pres. Defense Systems | Sell | 2,189 | $719.61 | $1.58M | Feb 18, 2026 | Feb 19, 2026 |
| ROEDER ROSHAN S | officer: CVP & Pres. Mission Systems | Sell | 318 | $702.56 | $223.41K | Feb 17, 2026 | Feb 19, 2026 |
| Simpson Kathryn G | officer: Corp VP & General Counsel | Sell | 779 | $702.56 | $547.29K | Feb 17, 2026 | Feb 19, 2026 |
| Hardesty Michael A | officer: Corp VP, Controller & CAO | Sell | 716 | $700.63 | $501.61K | Feb 17, 2026 | Feb 19, 2026 |
| Hardesty Michael A | officer: Corp VP, Controller & CAO | Sell | 1 | $703.21 | $407.86 | Feb 13, 2026 | Feb 17, 2026 |
| Hardesty Michael A | officer: Corp VP, Controller & CAO | Sell | 783 | $702.43 | $550K | Feb 13, 2026 | Feb 17, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 2,303 | $708.63 | $1.63M | Feb 06, 2026 | Feb 10, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 214 | $705.84 | $151.05K | Feb 06, 2026 | Feb 10, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 1,306 | $711.14 | $928.75K | Feb 06, 2026 | Feb 10, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 2,196 | $706.65 | $1.55M | Feb 06, 2026 | Feb 10, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 3,552 | $710.36 | $2.52M | Feb 06, 2026 | Feb 10, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 4,695 | $707.45 | $3.32M | Feb 06, 2026 | Feb 10, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 5,734 | $709.49 | $4.07M | Feb 06, 2026 | Feb 10, 2026 |
| WELSH MARK A III | director | Sell | 6 | $683.79 | $4.1K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 2 | $677.43 | $1.35K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 8 | $681.68 | $5.45K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 8 | $687.64 | $5.5K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 4 | $680.49 | $2.72K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 5 | $689.31 | $3.45K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 7 | $684.67 | $4.79K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 10 | $685.33 | $6.85K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 10 | $688.51 | $6.89K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 11 | $686.43 | $7.55K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 22 | $682.47 | $15.01K | Feb 02, 2026 | Feb 03, 2026 |
| WELSH MARK A III | director | Sell | 2 | $676.14 | $1.35K | Feb 02, 2026 | Feb 03, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 3,000 | $615.00 | $1.85M | Jan 06, 2026 | Jan 07, 2026 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 7,000 | $600.00 | $4.2M | Jan 05, 2026 | Jan 07, 2026 |
| ROEDER ROSHAN S | officer: CVP & Pres. Mission Systems | Sell | 84 | $555.35 | $46.65K | Dec 09, 2025 | Dec 11, 2025 |
| WELSH MARK A III | director | Sell | 6 | $561.51 | $3.37K | Nov 24, 2025 | Nov 25, 2025 |
| WELSH MARK A III | director | Sell | 61 | $564.36 | $34.43K | Nov 24, 2025 | Nov 25, 2025 |
| WELSH MARK A III | director | Sell | 12 | $565.31 | $6.78K | Nov 24, 2025 | Nov 25, 2025 |
| WELSH MARK A III | director | Sell | 9 | $563.62 | $5.07K | Nov 24, 2025 | Nov 25, 2025 |
| WELSH MARK A III | director | Sell | 7 | $562.52 | $3.94K | Nov 24, 2025 | Nov 25, 2025 |
| WELSH MARK A III | director | Sell | 1 | $566.15 | $566.15 | Nov 24, 2025 | Nov 25, 2025 |
| WELSH MARK A III | director | Sell | 1 | $560.39 | $560.39 | Nov 24, 2025 | Nov 25, 2025 |
| Jones Thomas H | officer: CVP & Pres Aeronautics Systems | Sell | 729 | $525.00 | $382.73K | Jul 17, 2025 | Jul 18, 2025 |
| WELSH MARK A III | director | Sell | 3 | $507.25 | $1.52K | Jul 07, 2025 | Jul 08, 2025 |
| WELSH MARK A III | director | Sell | 5 | $508.17 | $2.54K | Jul 07, 2025 | Jul 08, 2025 |
| WELSH MARK A III | director | Sell | 1 | $509.59 | $509.59 | Jul 07, 2025 | Jul 08, 2025 |
| WELSH MARK A III | director | Sell | 1 | $503.59 | $503.59 | Jul 07, 2025 | Jul 08, 2025 |
| WELSH MARK A III | director | Sell | 21 | $506.36 | $10.63K | Jul 07, 2025 | Jul 08, 2025 |
| WELSH MARK A III | director | Sell | 2 | $505.44 | $1.01K | Jul 07, 2025 | Jul 08, 2025 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 7,500 | $505.77 | $3.79M | Jun 13, 2025 | Jun 13, 2025 |
| Jones Thomas H | officer: CVP & Pres Aeronautics Systems | Sell | 729 | $505.77 | $368.71K | Jun 13, 2025 | Jun 16, 2025 |
| Fleming Robert J. | officer: CVP and Pres. Space Systems | Sell | 3,500 | $505.77 | $1.77M | Jun 13, 2025 | Jun 16, 2025 |
| Warden Kathy J | director, officer: Chair, CEO and President | Sell | 3,750 | $495.00 | $1.86M | Jun 12, 2025 | Jun 13, 2025 |
By insider
- Warden Kathy J−$25.87Mdirector, officer: Chair, CEO and President0B · 11S
- ROEDER ROSHAN S−$1.91Mofficer: CVP & Pres. Mission Systems0B · 4S
- Fleming Robert J.−$1.77Mofficer: CVP and Pres. Space Systems0B · 1S
- Davies Benjamin R.−$1.58Mofficer: CVP & Pres. Defense Systems0B · 1S
- Simpson Kathryn G−$1.34Mofficer: Corp VP & General Counsel0B · 3S
- Hardesty Michael A−$1.16Mofficer: Corp VP, Controller & CAO0B · 4S
- Jones Thomas H−$751.43Kofficer: CVP & Pres Aeronautics Systems0B · 2S
- WELSH MARK A III−$190.77Kdirector0B · 36S
Beneficial ownership filings
Schedule 13D / 13G — investors holding more than 5% of NOC-US.
DB · acquisition_ownership47
| Filed | Reporting person | Form | Type | Aggregate owned | % Class | Sole voting | Shared voting | Citizenship | |
|---|---|---|---|---|---|---|---|---|---|
| May 14, 2026 | Capital International Investors | — | IA | — | +5.20% | 0 | 0 | DELAWARE | SEC → |
| Apr 30, 2026 | Vanguard Capital Management | — | IA | — | +7.22% | 0 | 0 | PENNSYLVANIA | SEC → |
| Mar 27, 2026 | The Vanguard Group | — | IA | — | 0.00% | 0 | 0 | PENNSYLVANIA | SEC → |
| Aug 13, 2025 | Capital International Investors | — | IA | — | +8.60% | 0 | 0 | DELAWARE | SEC → |
| Apr 30, 2025 | The Vanguard Group | — | IA | — | +9.16% | 597.67K | 597.67K | PENNSYLVANIA | SEC → |
| Feb 11, 2022 | 95-1411037 | — | IA | — | +8.20% | 12.92M | 0 | Delaware | SEC → |
| Feb 10, 2022 | The Vanguard Group - 23-1945930 | — | IA | — | +7.51% | 0 | 225.56K | Pennsylvania For | SEC → |
| Feb 03, 2022 | (1) BlackRock, Inc. | — | HC | — | +5.40% | 7.78M | 0 | Delaware | SEC → |
| Feb 12, 2021 | The Northwestern Mutual Life Insurance Company | — | IC | — | +5.10% | 0 | 15.64M | BOSTON MASSACHUSETTS | SEC → |
| Feb 04, 2021 | Wellington Group Holdings LLP | — | HC | — | +5.41% | 0 | 8.95M | Massachusetts | SEC → |
| Feb 04, 2021 | Wellington Management Company LLP | — | IA | — | +5.35% | 0 | 8.87M | Massachusetts | SEC → |
| Feb 04, 2021 | Wellington Management Group LLP | — | HC | — | +5.41% | 0 | 8.95M | Massachusetts | SEC → |
| Feb 04, 2021 | Wellington Investment Advisors Holdings LLP | — | HC | — | +5.41% | 0 | 8.95M | Massachusetts | SEC → |
| Feb 14, 2020 | Paolo Cavazza | — | IN | — | +15.40% | 0 | 16.53M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 14, 2019 | 52-0556948 | — | IA | — | +6.60% | 4.53M | 0 | Maryland | SEC → |
| Feb 14, 2019 | Capital International Investors ** | — | IA | — | +6.00% | 10.35M | 0 | California | SEC → |
| Feb 13, 2019 | STATE STREET CORPORATION | — | HC | — | +10.20% | 0 | 17.17M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 13, 2019 | STATE STREET GLOBAL ADVISORS TRUST COMPANY | — | IA | — | +8.80% | 0 | 3.83M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 13, 2019 | STATE STREET BANK & TRUST COMPANY | — | BK | — | +6.41% | 0 | 11.13M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 14, 2017 | STATE STREET CORPORATION | — | HC | — | +11.31% | 0 | 19.93M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 14, 2017 | STATE STREET BANK AND TRUST COMPANY ACTING IN VARIOUS CAPACITIES | — | BK | — | +9.92% | 0 | 17.49M | BOSTON, MASSACHUSETTS | SEC → |
| Oct 11, 2016 | STATE STREET CORPORATION | — | HC | — | +3.80% | 0 | 0 | BOSTON, MASSACHUSETTS | SEC → |
| Feb 16, 2016 | STATE STREET CORPORATION | — | HC | — | +11.00% | 0 | 20.02M | BOSTON MASSACHUSETTS | SEC → |
| Feb 12, 2015 | STATE STREET CORPORATION | — | HC | — | +11.20% | 0 | 22.56M | BOSTON MASSACHUSETTS | SEC → |
| Feb 12, 2015 | STATE STREET BANK AND TRUST COMPANY ACTING IN VARIOUS CAPACITIES | — | BK | — | +8.40% | 0 | 17.03M | BOSTON MASSACHUSETTS | SEC → |
| Feb 12, 2014 | BARCLAYS GLOBAL INVESTORS, NA. | — | BK | — | +2.55% | 363.94K | — | Pennsylvania | SEC → |
| Feb 04, 2014 | STATE STREET BANK AND TRUST COMPANY ACTING IN VARIOUS CAPACITIES | — | BK | — | +8.20% | 0 | 18.24M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 04, 2014 | STATE STREET CORPORATION | — | HC | — | +10.90% | 0 | 24.3M | BOSTON, MASSACHUSETTS | SEC → |
| Feb 12, 2013 | STATE STREET CORPORATION | — | HC | — | +10.80% | 0 | 0 | BOSTON MASSACHUSETTS | SEC → |
| Feb 12, 2013 | STATE STREET BANK AND TRUST COMPANY ACTING IN VARIOUS CAPACITIES | — | BK | — | +8.20% | 0 | 0 | BOSTON MASSACHUSETTS | SEC → |
Showing 30 of 47 filings. All disclosures →
Top 10 holders · 8 quarters
13F position evolutionNo 13F history in
institutional_holders for NOC-US.