HII

SEC source: 0001628280-25-007792 · wk-form4_1740520190.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,676.513

Underlying: Common Stock · 1,777 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007792 · wk-form4_1740520190.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: 4,874.242

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007792 · wk-form4_1740520190.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: 5,996.877

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007803 · wk-form4_1740520291.xml · derivative · entry 4

Hughes Edmond E. Jr. · CIK 0001920500 · Ex VP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,676.513

Underlying: Common Stock · 1,777 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007803 · wk-form4_1740520291.xml · nonDerivative · entry 2

Hughes Edmond E. Jr. · CIK 0001920500 · Ex VP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,710.796

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007803 · wk-form4_1740520291.xml · nonDerivative · entry 1

Hughes Edmond E. Jr. · CIK 0001920500 · Ex VP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,701.787

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007790 · wk-form4_1740520170.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,409.513

Underlying: Common Stock · 1,510 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007790 · wk-form4_1740520170.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,716.334

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007790 · wk-form4_1740520170.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: 8,976.071

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007804 · wk-form4_1740520302.xml · derivative · entry 3

Hart Brooke · CIK 0001886264 · Ex. VP, Communications

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,204.757

Underlying: Common Stock · 755 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007804 · wk-form4_1740520302.xml · nonDerivative · entry 2

Hart Brooke · CIK 0001886264 · Ex. VP, Communications

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,350.269

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007804 · wk-form4_1740520302.xml · nonDerivative · entry 1

Hart Brooke · CIK 0001886264 · Ex. VP, Communications

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,420.799

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007794 · wk-form4_1740520211.xml · derivative · entry 3

Wilkinson Kara R. · CIK 0001852543 · Ex. VP and President, NNS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,881.988

Underlying: Common Stock · 2,665 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007794 · wk-form4_1740520211.xml · nonDerivative · entry 2

Wilkinson Kara R. · CIK 0001852543 · Ex. VP and President, NNS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,376.352

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007794 · wk-form4_1740520211.xml · nonDerivative · entry 1

Wilkinson Kara R. · CIK 0001852543 · Ex. VP and President, NNS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,368.307

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007802 · wk-form4_1740520280.xml · derivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,148.988

Underlying: Common Stock · 2,932 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007802 · wk-form4_1740520280.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,970.876

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007802 · wk-form4_1740520280.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: 25,929.397

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007793 · wk-form4_1740520200.xml · nonDerivative · entry 2

Boykin Jennifer R. · CIK 0001706050 · Executive VP, Special Projects

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,640.788

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007793 · wk-form4_1740520200.xml · nonDerivative · entry 1

Boykin Jennifer R. · CIK 0001706050 · Executive VP, Special Projects

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,483.436

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007796 · wk-form4_1740520230.xml · derivative · entry 4

Green Edgar A III · CIK 0001691442 · Ex VP, Pres. HII Mission Tech

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,881.988

Underlying: Common Stock · 2,665 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007796 · wk-form4_1740520230.xml · nonDerivative · entry 2

Green Edgar A III · CIK 0001691442 · Ex VP, Pres. HII Mission Tech

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,033.851

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007796 · wk-form4_1740520230.xml · nonDerivative · entry 1

Green Edgar A III · CIK 0001691442 · Ex VP, Pres. HII Mission Tech

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,999.451

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007805 · wk-form4_1740520313.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,700.95

Underlying: Common Stock · 1,066 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007805 · wk-form4_1740520313.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,708.849

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007805 · wk-form4_1740520313.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,427.133

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007798 · wk-form4_1740520249.xml · derivative · entry 5

Kastner Christopher D · CIK 0001569904 · Director · Director, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,986.681

Underlying: Common Stock · 15,105 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007798 · wk-form4_1740520249.xml · nonDerivative · entry 2

Kastner Christopher D · CIK 0001569904 · Director · Director, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,190.744

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007798 · wk-form4_1740520249.xml · nonDerivative · entry 1

Kastner Christopher D · CIK 0001569904 · Director · Director, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,445.901

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007795 · wk-form4_1740520220.xml · derivative · entry 3

Stiehle Thomas E. · CIK 0001846302 · Ex. VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,785.376

Underlying: Common Stock · 3,198 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007795 · wk-form4_1740520220.xml · nonDerivative · entry 2

Stiehle Thomas E. · CIK 0001846302 · Ex. VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,644.088

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007795 · wk-form4_1740520220.xml · nonDerivative · entry 1

Stiehle Thomas E. · CIK 0001846302 · Ex. VP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,498.298

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007791 · wk-form4_1740520180.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,248.757

Underlying: Common Stock · 799 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · shares: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.exercise_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F3 · derivative.expiration_date: Each restricted stock rights ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-007791 · wk-form4_1740520180.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,552.013

F2 · shares: Shares withheld by issuer for payment of withholding taxes on RPSRs.

SEC source: 0001628280-25-007791 · wk-form4_1740520180.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,669.326

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2024.

SEC source: 0001628280-25-007789 · wk-form4_1740520157.xml · derivative · entry 1

Chewning Eric D. · CIK 0001964855 · Ex VP, Strategy & Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,676.513

Underlying: Common Stock · 1,777 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F1 · shares: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F1 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F1 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Company common stock, or, at the discretion of the Company's Compensation Committee, cash or a combination of cash and Company common stock. The RSRs were granted under the 2022 Long-Term Incentive Stock Plan on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

SEC source: 0001628280-25-005759 · wk-form4_1739568659.xml · nonDerivative · entry 1

SCHIEVELBEIN THOMAS C · CIK 0001216515 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,967.365

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: 0001628280-25-000277 · wk-form4_1735939324.xml · nonDerivative · entry 1

Jimenez Frank R · CIK 0001465175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,427.885

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: 0001628280-25-000272 · wk-form4_1735939267.xml · nonDerivative · entry 1

Harker Victoria D · CIK 0001350579 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,008

F1 · shares: Represents shares of common stock deferred into stock unit account.

SEC source: 0001628280-25-000267 · wk-form4_1735939226.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,847.904

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: 0001628280-25-000274 · wk-form4_1735939292.xml · nonDerivative · entry 1

WELCH JOHN K · CIK 0001222207 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,822.999

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: 0001628280-25-000273 · wk-form4_1735939281.xml · nonDerivative · entry 1

SCHIEVELBEIN THOMAS C · CIK 0001216515 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,728.979

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: 0001628280-25-000265 · wk-form4_1735939216.xml · nonDerivative · entry 1

KELLY ANASTASI D · CIK 0001200231 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,756

F1 · shares: Represents shares of common stock deferred into stock unit account.

SEC source: 0001628280-25-000275 · wk-form4_1735939303.xml · nonDerivative · entry 1

DONALD KIRKLAND H · CIK 0001579933 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,881.271

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: 0001628280-25-000271 · wk-form4_1735939256.xml · nonDerivative · entry 1

McKibben Tracy B · CIK 0001584119 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,681.696

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: 0001628280-25-000270 · wk-form4_1735939246.xml · nonDerivative · entry 1

Faller Craig S. · CIK 0001996124 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,053.498

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: 0001628280-25-000269 · wk-form4_1735939236.xml · nonDerivative · entry 1

O'Sullivan Stephanie L. · CIK 0001842003 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,155.566

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: 0001628280-25-000059 · wk-form4_1735852686.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,628.904

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.