O'Sullivan Stephanie L. 4

4 · HUNTINGTON INGALLS INDUSTRIES, INC. · Filed Jun 15, 2026

AI-generated summary of this filing

Updated Jun 15, 2026

Huntington Ingalls (HII) Director Stephanie O'Sullivan Receives Award

What Happened

Stephanie L. O'Sullivan, a director of Huntington Ingalls Industries (HII), was credited with 18.638 shares on June 12, 2026 under an award/grant (transaction code A). The filing reports an acquisition price of $0.00 and a total reported value of $0, reflecting dividend-equivalent share units rather than a cash purchase.

Key Details

Transaction date: 2026-06-12; filing date: 2026-06-15 (timely filed within SEC Form 4 rules).
Transaction type/code: Award/Grant (A).
Shares acquired: 18.638 share-equivalents; reported price per share: $0.00; reported total value: $0.
Shares owned after the transaction: not specified in the Form 4 provided.
Footnote: These shares reflect dividend equivalents credited on director stock units (SUAs) under HII’s 2012 and 2022 Long-Term Incentive Stock Plans. Dividend equivalents are converted into SUAs by dividing the dividend amount by the company’s closing share price on the dividend payment date.
No indication of 10b5-1 plan, tax withholding, sale, or exercise in this filing.

Context

This was not a market purchase or sale but a routine crediting of dividend equivalents to director stock units. Each SUA is a right to one share that generally becomes payable within ~30 days after a non-employee director stops serving on the board. Such credits are common and do not in themselves signal a buy/sell view by the insider.

Form 4

Period: 2026-06-12

Director

Transactions

Footnotes (1)

[F1]Pursuant to the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan (together, the "LTISPs"), dividend equivalents are credited on each director stock unit ("SUA") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each SUA represents a right to receive one share of Company common stock, which will generally become payable within 30 days following the date a non-employee director ceases to provide services as a member of the board of directors. The number of dividend equivalents acquired by the Reporting Person under the LTISPs is calculated by dividing the aggregate amount of the dividend paid on the total number of SUAs held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

Signature

/s/ Tiffany M. King, Attorney-in-Fact|2026-06-15

1 file