O'Sullivan Stephanie L. 4

What Happened
Stephanie L. O'Sullivan, a director of Huntington Ingalls Industries (HII), was awarded 174 shares on 2026-07-01. The shares are reported at $278.97 each, for a total value of approximately $48,541. The transaction is coded as an award/acquisition (A).

Key Details

• Transaction date: 2026-07-01; Form 4 filed: 2026-07-02 (timely filed).
• Shares awarded: 174 at $278.97 per share (total ≈ $48,541).
• Transaction type: Award/other acquisition (code A).
• Shares owned after transaction: Not disclosed in the filing excerpt.
• Footnote: Shares were deferred into a stock unit account under the Huntington Ingalls 2022 Long-Term Incentive Stock Plan; reported as an exempt transaction pursuant to Rule 16b-3.

Context
This was a compensation-related award (deferred stock units), not an open-market purchase. Such grants are a routine part of director compensation and may be subject to vesting or deferral rules, so they don't necessarily signal the director buying shares on the open market. The Rule 16b-3 exemption is standard for plan-based awards to insiders.