Collins Augustus L

SEC source: 0001689175-26-000016 · wk-form4_1790972579.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,297.42

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001689175-26-000014 · wk-form4_1789416772.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,120.42

F1 · shares: 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.

SEC source: 0001689175-26-000012 · wk-form4_1783023347.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,065.823

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001689175-26-000010 · wk-form4_1781554939.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,891.823

F1 · shares: 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.

SEC source: 0000036146-26-000057 · form4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,430

F1 · balance_after: Includes 39 shares acquired through TRMK Employee and Director Stock Purchase Plan and 1 share acquired through dividend reinvestment plan as of April 28, 2026.

SEC source: 0001689175-26-000007 · wk-form4_1775226067.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,841.561

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001689175-26-000004 · wk-form4_1773692213.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,718.561

F1 · shares: 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.

SEC source: 0001689175-26-000002 · wk-form4_1767647859.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,683.099

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001689175-25-000008 · wk-form4_1765833707.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,544.099

F1 · shares: 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.

SEC source: 0001689175-25-000006 · wk-form4_1759436415.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,499.775

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001689175-25-000005 · wk-form4_1757967181.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,355.775

F1 · shares: 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.

SEC source: 0001628280-25-033993 · wk-form4_1751487650.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,305.13

F1 · kind: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001628280-25-031575 · wk-form4_1750105060.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,138.13

F1 · shares: 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 ("DSU") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each DSU 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 stock units ("SUAs") held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

SEC source: 0001062993-25-007958 · form4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,994

F1 · balance_after: Includes 43 shares acquired through TRMK Employee and Director Stock Purchase Plan and 1 share acquired through dividend reinvestment plan as of April 22, 2025.

SEC source: 0001628280-25-016036 · wk-form4_1743553461.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,079.661

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001628280-25-013124 · wk-form4_1742242603.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,875.661

F1 · shares: 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 ("DSU") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each DSU 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 stock units held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

SEC source: 0001628280-25-000276 · wk-form4_1735939314.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,808.163

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001628280-25-000061 · wk-form4_1735852706.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,589.163

F1 · shares: Shares of common stock issued in lieu of cash pursuant to the Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan ("Plan") in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001628280-24-051447 · wk-form4_1734384990.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,398.163

F1 · shares: 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 ("DSU") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each DSU 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 stock units ("SUAs") held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

SEC source: 0001628280-24-041900 · wk-form4_1727900352.xml · nonDerivative · entry 2

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,332.589

F2 · shares: Shares of common stock deferred into stock unit account pursuant to the Plan in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001628280-24-041900 · wk-form4_1727900352.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,177.589

F1 · shares: Shares of common stock issued in lieu of cash pursuant to the Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan ("Plan") in an exempt transaction pursuant to Rule 16b-3.

SEC source: 0001628280-24-040490 · wk-form4_1726518539.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,040.589

F1 · shares: 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 ("DSU") held by the Reporting Person following the payment of the Company's quarterly cash dividend. Each DSU 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 DSUs held by the Reporting Person by the closing price of a share of Company common stock on the dividend payment date.

SEC source: 0000950170-24-080589 · ownership.xml · nonDerivative · entry 2

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,996.656

F3 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0000950170-24-080589 · ownership.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,829.656

F1 · shares: Shares of common stock issued in lieu of cash pursuant to the Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan ("Plan"), in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0000950170-24-075160 · ownership.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,682.656

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.30 per share of common stock on June 14, 2024. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001062993-24-008812 · form4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,007

F1 · balance_after: Includes 55 shares acquired through TRMK Employee and Director Stock Purchase Plan and 5 shares acquired through dividend reinvestment plan as of April 23, 2024.

SEC source: 0000950170-24-040401 · ownership.xml · nonDerivative · entry 2

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,635.583

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0000950170-24-040401 · ownership.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,492.583

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0000950170-24-030301 · ownership.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,368.583

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.30 per share of common stock on March 8, 2024. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0000950170-24-002057 · ownership.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,331.659

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0000950170-24-001065 · ownership.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,173.659

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-058331 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,053.659

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.30 per share of common stock on December 8, 2023. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-052033 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 8,011.479

F1 · shares: Shares of common stock issued in lieu of cash pursuant to the Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan ("Plan"), in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-051406 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,813.479

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-049152 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,661.479

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.24 per share of common stock on September 8, 2023. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-041661 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,616.689

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-041130 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,442.689

F1 · shares: Shares of common stock issued in lieu of cash pursuant to the Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan ("Plan"), in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-036647 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,305.689

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.24 per share of common stock on June 9, 2023. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001062993-23-009635 · form4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,855

F1 · balance_after: Includes 44 shares acquired through TRMK Employee and Director Stock Purchase Plan and 3 shares acquired through dividend reinvestment plan as of April 25, 2023.

SEC source: 0001209191-23-023484 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,263.858

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-022763 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,072.858

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-018703 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,922.858

F1 · shares: Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 Long-Term Incentive Stock Plan, the number of shares is determined by dividing the aggregate amount of the dividend by the closing price of a share of common stock on the date of the payment of the dividend.

F1 · ownership.nature: Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 Long-Term Incentive Stock Plan, the number of shares is determined by dividing the aggregate amount of the dividend by the closing price of a share of common stock on the date of the payment of the dividend.

SEC source: 0001209191-23-002156 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,881.83

F1 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 Long-Term Incentive Stock Plan. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-23-001198 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,706.83

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2011, 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-22-060952 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,571.83

F1 · kind: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.24 per share of common stock on December 9, 2022. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.direct: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-22-052797 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,537.1

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-22-052339 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,361.1

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2011, 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-22-049707 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,220.1

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.18 per share of common stock on September 9, 2022. Pursuant to the terms of the Huntington Ingalls Industries, Inc. 2012 and 2022 Long-Term Incentive Stock Plan, shares of common stock representing the dividend were deferred into a stock unit account in a transaction exempt by Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-22-041268 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,189.068

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.

SEC source: 0001209191-22-040737 · doc4.xml · nonDerivative · entry 1

Collins Augustus L · CIK 0001689175 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 6,008.068

F1 · shares: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan, in an exempt transaction pursuant to Rule 16b-3.

F2 · ownership.nature: Represents vested restricted stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc.'s 2012 and 2022 Long-Term Incentive Stock Plans. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value), 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.