HII

SEC source: 0001209191-23-052007 · doc4.xml · nonDerivative · entry 1

McKibben Tracy B · CIK 0001584119 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,728.304

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: 0001209191-23-052002 · doc4.xml · nonDerivative · entry 1

O'Sullivan Stephanie L. · CIK 0001842003 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,242.716

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: 0001209191-23-051406 · 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: 0001209191-23-051442 · doc4.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote (2)

Disclosed balance after: 1,001.981

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 2022 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: 0001209191-23-050780 · doc4.xml · nonDerivative · entry 1

Holmes Stewart H. · CIK 0001886377 · Ex. VP, Govt & Cust Relations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,863.089

F1 · kind: Shares withheld by the issuer for the payment of withholding taxes on restricted stock that vested on September 27, 2023.

SEC source: 0001209191-23-049138 · doc4.xml · nonDerivative · entry 2

Borkey Todd A. · CIK 0001948701 · Ex VP & Chief Technology Offic

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,424.636

SEC source: 0001209191-23-049149 · doc4.xml · nonDerivative · entry 2

Soong Christopher W. · CIK 0001971852 · Ex VP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,125.779

SEC source: 0001209191-23-049138 · doc4.xml · nonDerivative · entry 1

Borkey Todd A. · CIK 0001948701 · Ex VP & Chief Technology Offic

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,434.734

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 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.

SEC source: 0001209191-23-049141 · doc4.xml · nonDerivative · entry 1

Holmes Stewart H. · CIK 0001886377 · Ex. VP, Govt & Cust Relations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,782.488

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 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.

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: 0001209191-23-049163 · doc4.xml · nonDerivative · entry 1

Jimenez Frank R · CIK 0001465175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,336.47

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: 0001209191-23-049161 · doc4.xml · nonDerivative · entry 1

Harker Victoria D · CIK 0001350579 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,380.6535

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: 0001209191-23-049154 · doc4.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote (2)

Disclosed balance after: 840.981

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. 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 2022 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: 0001209191-23-049183 · doc4.xml · nonDerivative · entry 1

WELCH JOHN K · CIK 0001222207 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 5,614.422

F1 · shares: Huntington Ingalls Industries, Inc. paid a cash dividend of $1.24 per share of common stock on September 8. 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: 0001209191-23-049179 · doc4.xml · nonDerivative · entry 1

SCHIEVELBEIN THOMAS C · CIK 0001216515 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 20,122.321

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. 2011, 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 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: 0001209191-23-049165 · doc4.xml · nonDerivative · entry 1

KELLY ANASTASI D · CIK 0001200231 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 16,901.972

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. 2011, 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 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: 0001209191-23-049173 · doc4.xml · nonDerivative · entry 1

O'Sullivan Stephanie L. · CIK 0001842003 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,044.716

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: 0001209191-23-049167 · doc4.xml · nonDerivative · entry 1

McKibben Tracy B · CIK 0001584119 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,530.304

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: 0001209191-23-049159 · doc4.xml · nonDerivative · entry 1

DONALD KIRKLAND H · CIK 0001579933 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 4,697.839

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: 0001209191-23-049149 · doc4.xml · nonDerivative · entry 1

Soong Christopher W. · CIK 0001971852 · Ex VP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,135.877

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 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.

SEC source: 0001209191-23-048438 · doc4.xml · nonDerivative · entry 1

Boudreaux Chad N. · CIK 0001808160 · Ex VP & Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,209.627

F1 · price: The price shown is the weighted average price at which shares were acquired in multiple sales transactions made pursuant to a single market order. The range of prices for the transactions was $217.32 to $217.40. Upon request by SEC staff, the issuer or a security holder of the issuer, the reporting person will provide full information regarding the number of shares sold at each separate price.

SEC source: 0001209191-23-048218 · doc4.xml · nonDerivative · entry 1

Boykin Jennifer R. · CIK 0001706050 · Ex VP, President NNS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,619.847

SEC source: 0001209191-23-047395 · doc4.xml · nonDerivative · entry 1

Borkey Todd A. · CIK 0001948701 · Ex VP & Chief Technology Offic

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,392.924

F1 · shares: Shares withheld by the issuer for the payment of withholding taxes on restricted stock that vested on August 24, 2023.

SEC source: 0001209191-23-047390 · doc4.xml · nonDerivative · entry 1

Soong Christopher W. · CIK 0001971852 · Ex VP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,114.972

F1 · shares: Shares withheld by the issuer for the payment of withholding taxes on restricted stock that vested on August 24, 2023.

SEC source: 0001209191-23-045865 · doc4.xml · nonDerivative · entry 1

Wyatt D R · CIK 0001516245 · Corp VP & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,320.418

SEC source: 0001209191-23-046079 · doc4.xml · derivative · entry 2

Schuck Nicolas G · CIK 0001651056 · Corp VP, Controller & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,329.1918

Underlying: Common Stock · 1,735.0568 shares

Expires not disclosed

F1 · derivative.exercise_price: The transaction constitutes an intra-plan transfer in the Huntington Ingalls Industries, Inc. Savings Excess Plan (the "Plan") from the HII Stock Fund to another investment option in the Plan. The reporting person's interest in the HII Stock Fund is held in the form of units of interest. The Plan's administrator calculates the number of shares of issuer common stock represented by units in the HII Stock Fund.

F2 · date: Disgorgement pursuant to Section 16 has been paid to the Company in connection with this transaction.

F1 · derivative.exercise_date: The transaction constitutes an intra-plan transfer in the Huntington Ingalls Industries, Inc. Savings Excess Plan (the "Plan") from the HII Stock Fund to another investment option in the Plan. The reporting person's interest in the HII Stock Fund is held in the form of units of interest. The Plan's administrator calculates the number of shares of issuer common stock represented by units in the HII Stock Fund.

F1 · derivative.expiration_date: The transaction constitutes an intra-plan transfer in the Huntington Ingalls Industries, Inc. Savings Excess Plan (the "Plan") from the HII Stock Fund to another investment option in the Plan. The reporting person's interest in the HII Stock Fund is held in the form of units of interest. The Plan's administrator calculates the number of shares of issuer common stock represented by units in the HII Stock Fund.

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: 0001209191-23-041684 · doc4.xml · nonDerivative · entry 1

Jimenez Frank R · CIK 0001465175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,328.655

F1 · shares: Represents stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Stock Incentive Plan. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value).

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: 0001209191-23-041682 · doc4.xml · nonDerivative · entry 1

Harker Victoria D · CIK 0001350579 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,968

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: 0001209191-23-041666 · doc4.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote (2)

Disclosed balance after: 836.021

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 stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Stock Incentive Plan. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value).

SEC source: 0001209191-23-041699 · doc4.xml · nonDerivative · entry 1

WELCH JOHN K · CIK 0001222207 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 5,581.596

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: 0001209191-23-041697 · doc4.xml · nonDerivative · entry 1

SCHIEVELBEIN THOMAS C · CIK 0001216515 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 20,004.669

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: 0001209191-23-041688 · doc4.xml · nonDerivative · entry 1

KELLY ANASTASI D · CIK 0001200231 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 716

F1 · shares: Shares of common stock issued pursuant to the Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan ("Plan"), in an exempt transaction pursuant to Rule 16b-3. After the Reporting Person has accumulated a combination of restricted stock units and/or shares of common stock equal to at least five times the cash portion of their annual retainer, the Reporting Person may elect annually to receive and directly own common stock, rather than receiving a credit for restricted stock units.

SEC source: 0001209191-23-041693 · doc4.xml · nonDerivative · entry 1

O'Sullivan Stephanie L. · CIK 0001842003 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 2,032.76

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: 0001209191-23-041691 · doc4.xml · nonDerivative · entry 1

McKibben Tracy B · CIK 0001584119 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,509.663

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 2022 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: 0001209191-23-041669 · doc4.xml · nonDerivative · entry 1

DONALD KIRKLAND H · CIK 0001579933 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 4,670.372

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: 0001209191-23-041144 · doc4.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote (2)

Disclosed balance after: 662.021

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 stock units credited to the Reporting Person's account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Stock Incentive Plan. Each director stock unit represents a right to receive one share of Issuer common stock (or cash equivalent value).

SEC source: 0001209191-23-036780 · doc4.xml · nonDerivative · entry 1

Borkey Todd A. · CIK 0001948701 · Ex VP & Chief Technology Offic

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,109.924

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.

SEC source: 0001209191-23-036790 · doc4.xml · nonDerivative · entry 1

Holmes Stewart H. · CIK 0001886377 · Ex. VP, Govt & Cust Relations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,770.073

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.

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: 0001209191-23-036696 · doc4.xml · nonDerivative · entry 1

Jimenez Frank R · CIK 0001465175 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,154.655

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: 0001209191-23-036678 · doc4.xml · nonDerivative · entry 1

Harker Victoria D · CIK 0001350579 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 7,337.4945

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: 0001209191-23-036654 · doc4.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote (2)

Disclosed balance after: 520.021

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. 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 2022 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: 0001209191-23-036768 · doc4.xml · nonDerivative · entry 1

WELCH JOHN K · CIK 0001222207 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 5,407.596

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: 0001209191-23-036750 · doc4.xml · nonDerivative · entry 1

SCHIEVELBEIN THOMAS C · CIK 0001216515 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 19,830.669

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. 2011, 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 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: 0001209191-23-036714 · doc4.xml · nonDerivative · entry 1

KELLY ANASTASI D · CIK 0001200231 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 16,803.149

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. 2011, 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 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: 0001209191-23-036810 · doc4.xml · nonDerivative · entry 1

Soong Christopher W. · CIK 0001971852 · Ex VP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,030.972

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.

SEC source: 0001209191-23-036738 · doc4.xml · nonDerivative · entry 1

O'Sullivan Stephanie L. · CIK 0001842003 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,858.76

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: 0001209191-23-036729 · doc4.xml · nonDerivative · entry 1

McKibben Tracy B · CIK 0001584119 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 3,335.663

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.