Massivemarkets

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

NOC daily closelast $552.17

Kathy J. Warden · Chair, CEO and President

$20.2M sold

Roshan S. Roeder · CVP & Pres. Mission Systems

$1.9M sold

Benjamin R. Davies · CVP & Pres. Defense Systems

$1.6M sold

Kathryn G. Simpson · Corp VP & General Counsel

$1.3M sold

Michael A. Hardesty · Corp VP, Controller & CAO

$1.2M sold

Mark A. Welsh III · Director

$226.1K sold
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Has 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
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Kathy J. WardenChair, CEO and President$20.2M—230% of sales
Roshan S. RoederCVP & Pres. Mission Systems$1.9M—4100% of sales
Benjamin R. DaviesCVP & Pres. Defense Systems$1.6M—1—
Kathryn G. SimpsonCorp VP & General Counsel$1.3M—3100% of sales
Michael A. HardestyCorp VP, Controller & CAO$1.2M—3—
Mark A. Welsh IIIDirector$226.1K—4100% of sales
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:

Agent prompt

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.