Director Mark A. Welsh III filed a Form 4 with the SEC on August 4, 2026, disclosing the sale of 95 shares of Northrop Grumman Corp /DE/ (NYSE: NOC) common stock on August 3, 2026, pursuant to a pre-established Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: Mark A. Welsh III, identified as a Director of Northrop Grumman Corp /DE/
  • Total shares sold: 95 shares of common stock across 10 separate transactions on August 3, 2026
  • Price range: Weighted average sale prices ranged from $544.53 to $554.14 per share across the reported transactions
  • Trading plan: All sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2025
  • Remaining ownership: Following the reported transactions, Welsh directly beneficially owned 4,393 shares of common stock
  • Ownership form: All shares sold and remaining shares are held directly

Welsh's August 2026 Share Sales Under 10b5-1 Plan

According to the filing, Mark A. Welsh III disposed of Northrop Grumman common stock through 10 separate sale transactions, all occurring on August 3, 2026. The sales were executed under a Rule 10b5-1 trading plan that the filing states was adopted on August 23, 2025. The filing box indicating a transaction made pursuant to a contract, instruction, or written plan satisfying the affirmative defense conditions of Rule 10b5-1(c) is checked.

The 10 transactions involved the following share counts and weighted average prices: 8 shares at $544.53, 19 shares at $545.59, 11 shares at $546.42, 31 shares at $547.42, 10 shares at $548.32, 6 shares at $549.50, 2 shares at $550.68, 2 shares at $552.95, 2 shares at $553.90, and 4 shares at $554.14. Several of these prices represent weighted averages, and the filing notes that for those transactions, Welsh "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."

Prior to these sales, Welsh held 4,488 shares directly, based on the opening figure implied by the sequential transaction totals reported in the filing. After all 10 transactions, his directly held beneficial ownership stood at 4,393 shares, as disclosed in the filing. No derivative securities transactions were reported in Table II.

What Was Disclosed

The filing disclosed 10 open-market sales of Northrop Grumman common stock totaling 95 shares by Director Mark A. Welsh III on August 3, 2026, at weighted average prices between $544.53 and $554.14, carried out under a Rule 10b5-1 plan adopted August 23, 2025.