SEC Form 4
Northrop Grumman Corp. (NOC) insider trading
In the 12 months to Oct 23, 2026, 6 NOC insiders reported open-market sales of $26.4M across 17 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $26.4M
- 17 filings · 6 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 12 of 17
- $9.5M of $26.4M sold (36%)
Who traded NOC, and when
- Sale
- Sale, pre-arranged (10b5-1)
NOC daily close from Oct 23, 2025 to Oct 23, 2026, between $473.46 and $768.02, last $552.17. 17 sale and 0 purchase filings by 6 insiders, marked at their filing dates. Kathy J. Warden, Chair, CEO and President: sold $20.2M across 2 filings, first filed Jan 7, 2026, last Feb 10, 2026. Roshan S. Roeder, CVP & Pres. Mission Systems: sold $1.9M across 4 filings, first filed Dec 11, 2025, last Mar 2, 2026. Benjamin R. Davies, CVP & Pres. Defense Systems: sold $1.6M across 1 filing, first filed Feb 19, 2026, last Feb 19, 2026. Kathryn G. Simpson, Corp VP & General Counsel: sold $1.3M across 3 filings, first filed Feb 19, 2026, last Mar 3, 2026. Michael A. Hardesty, Corp VP, Controller & CAO: sold $1.2M across 3 filings, first filed Feb 17, 2026, last Feb 20, 2026. Mark A. Welsh III, Director: sold $226.1K across 4 filings, first filed Nov 25, 2025, last Aug 4, 2026.
Largest mark · tap a row for others
Kathy J. Warden · Chair, CEO and President
Sale $14,176,469
20,000 shares at $708.82 avg
Filed Feb 10, 2026 · traded Feb 6
Close on filing date $685.00
Kathy J. Warden · Chair, CEO and President
Chair, CEO and President
$20.2M soldRoshan S. Roeder · CVP & Pres. Mission Systems
CVP & Pres. Mission Systems
$1.9M soldBenjamin R. Davies · CVP & Pres. Defense Systems
CVP & Pres. Defense Systems
$1.6M soldKathryn G. Simpson · Corp VP & General Counsel
Corp VP & General Counsel
$1.3M soldMichael A. Hardesty · Corp VP, Controller & CAO
Corp VP, Controller & CAO
$1.2M soldMark A. Welsh III · Director
Director
$226.1K soldHas Northrop Grumman Corp.'s CEO sold stock?
Yes. Kathy J. Warden (CEO) sold 30,000 shares ($20.2M) between Jan 2026 and Feb 2026, $6.0M of it under a pre-arranged 10b5-1 plan.
Open-market trades
17 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Kathy J. Warden | Chair, CEO and President | $20.2M | — | 2 | 30% of sales | |
| Roshan S. Roeder | CVP & Pres. Mission Systems | $1.9M | — | 4 | 100% of sales | |
| Benjamin R. Davies | CVP & Pres. Defense Systems | $1.6M | — | 1 | — | |
| Kathryn G. Simpson | Corp VP & General Counsel | $1.3M | — | 3 | 100% of sales | |
| Michael A. Hardesty | Corp VP, Controller & CAO | $1.2M | — | 3 | — | |
| Mark A. Welsh III | Director | $226.1K | — | 4 | 100% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Mark A. Welsh III Director | SalePre-arranged (10b5-1) | 95 | $547.53 | $52.0K | 4,419 | |
traded | Mark A. Welsh III Director | SalePre-arranged (10b5-1) | 95 | $571.68 | $54.3K | 4,215 | |
traded | Kathryn G. Simpson Corp VP & General Counsel | SalePre-arranged (10b5-1) | 873 | $745.00 | $650.4K | 1 | |
traded | Roshan S. Roeder CVP & Pres. Mission Systems | SalePre-arranged (10b5-1) | 1,754 | $720.00 | $1.3M | 2,353 | |
traded | Michael A. Hardesty Corp VP, Controller & CAO | Sale | 147 | $732.98 | $107.7K | 2,525 | |
traded | Roshan S. Roeder CVP & Pres. Mission Systems | SalePre-arranged (10b5-1) | 512 | $727.62 | $372.5K | 4,107 | |
traded | Kathryn G. Simpson Corp VP & General Counsel | SalePre-arranged (10b5-1) | 194 | $727.62 | $141.2K | 874 | |
traded | Roshan S. Roeder CVP & Pres. Mission Systems | SalePre-arranged (10b5-1) | 318 | $702.56 | $223.4K | 4,619 | |
traded | Kathryn G. Simpson Corp VP & General Counsel | SalePre-arranged (10b5-1) | 779 | $702.56 | $547.3K | 1,068 | |
traded | Michael A. Hardesty Corp VP, Controller & CAO | Sale | 716 | $700.63 | $501.6K | 2,672 | |
traded | Benjamin R. Davies CVP & Pres. Defense Systems | Sale | 2,189 | $719.61 | $1.6M | 151 | |
traded | Michael A. Hardesty Corp VP, Controller & CAO | Sale | 784 | $702.43 | $550.4K | 3,094 | |
traded | Kathy J. Warden Chair, CEO and President | Sale | 20,000 | $708.82 | $14.2M | 182,194 | |
traded | Mark A. Welsh III Director | SalePre-arranged (10b5-1) | 95 | $684.52 | $65.0K | 4,203 | |
traded | Kathy J. Warden Chair, CEO and President | SalePre-arranged (10b5-1) | 10,000 | $604.50 | $6.0M | 191,602 | |
traded | Roshan S. Roeder CVP & Pres. Mission Systems | SalePre-arranged (10b5-1) | 84 | $555.35 | $46.6K | 404 | |
traded | Mark A. Welsh III Director | SalePre-arranged (10b5-1) | 97 | $564.08 | $54.7K | 4,377 |
GET /stocks/filings/vX/form-4?tickers=NOC&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"NOC"
],
"issuer_cik": "0001133421",
"owner_cik": "0001692554",
"accession_number": "0001628280-26-052370",
"form_type": "4",
"filing_date": "2026-08-04",
"period_of_report": "2026-08-03",
"issuer_name": "NORTHROP GRUMMAN CORP /DE/",
"issuer_trading_symbol": "NOC",
"owner_name": "WELSH MARK A III",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-08-03",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2,
"transaction_price_per_share": 550.68,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 4401,
"transaction_value": 1101.36,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2025."
}
]
},
{
"tickers": [
"NOC"
],
"issuer_cik": "0001133421",
"owner_cik": "0001692554",
"accession_number": "0001628280-26-052370",
"form_type": "4",
"filing_date": "2026-08-04",
"period_of_report": "2026-08-03",
"issuer_name": "NORTHROP GRUMMAN CORP /DE/",
"issuer_trading_symbol": "NOC",
"owner_name": "WELSH MARK A III",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-08-03",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 11,
"transaction_price_per_share": 546.42,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 4450,
"transaction_value": 6010.62,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2025."
},
{
"id": "F4",
"description": "Represents the weighted average sale price of $546.42 rounded to the nearest hundredth. The highest price at which the shares were sold was $546.89 and the lowest price at which the shares were sold was $546.05. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 49 records
- Option exercises15 records
- Tax withholding15 records
- Grants and awards19 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for NOC every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.