HII

SEC source: 0001569904-26-000004 · wk-form4_1772227162.xml · derivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,834.54

Underlying: Common Stock · 5,854 shares

Expires not disclosed

F3 · 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 ("LTISP") on 2/25/26 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 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 ("LTISP") on 2/25/26 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 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 ("LTISP") on 2/25/26 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

SEC source: 0001569904-26-000004 · wk-form4_1772227162.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,007.095

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

SEC source: 0001569904-26-000004 · wk-form4_1772227162.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,726.833

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2025.

SEC source: 0001964855-26-000004 · wk-form4_1772227152.xml · derivative · entry 3

Chewning Eric D. · CIK 0001964855 · EVP, Maritime Sys & Corp STR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,512.625

Underlying: Common Stock · 688 shares

Expires not disclosed

F3 · 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 ("LTISP") on 2/25/26 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 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 ("LTISP") on 2/25/26 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 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 ("LTISP") on 2/25/26 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

SEC source: 0001964855-26-000004 · wk-form4_1772227152.xml · nonDerivative · entry 2

Chewning Eric D. · CIK 0001964855 · EVP, Maritime Sys & Corp STR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,481.067

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

SEC source: 0001964855-26-000004 · wk-form4_1772227152.xml · nonDerivative · entry 1

Chewning Eric D. · CIK 0001964855 · EVP, Maritime Sys & Corp STR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,386.666

F1 · shares: Shares issued upon settlement of restricted performance stock rights ("RPSRs") for the performance period that ended on 12/31/2025.

SEC source: 0002049633-26-000002 · wk-form4_1772058497.xml · derivative · entry 4

Blanchette Brian D. · CIK 0002049633 · Ex VP and President, Ingalls

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,008.474

Underlying: Restricted Stock Rights · 907.531 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0002049633-26-000002 · wk-form4_1772058497.xml · nonDerivative · entry 2

Blanchette Brian D. · CIK 0002049633 · Ex VP and President, Ingalls

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,716.681

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0002049633-26-000002 · wk-form4_1772058497.xml · nonDerivative · entry 1

Blanchette Brian D. · CIK 0002049633 · Ex VP and President, Ingalls

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,122.374

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001920500-26-000002 · wk-form4_1772058532.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: 1,824.625

Underlying: Common Stock · 605.021 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001920500-26-000002 · wk-form4_1772058532.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: 9,063.919

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001920500-26-000002 · wk-form4_1772058532.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: 9,336.038

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001852543-26-000003 · wk-form4_1772058725.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: 2,645.95

Underlying: Common Stock · 907.531 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001852543-26-000003 · wk-form4_1772058725.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: 11,086.864

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 26, 2025.

SEC source: 0001852543-26-000003 · wk-form4_1772058725.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: 11,506.219

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001808160-26-000002 · wk-form4_1772058520.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,827.865

Underlying: Common Stock · 998.489 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001808160-26-000002 · wk-form4_1772058520.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: 20,980.202

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001808160-26-000002 · wk-form4_1772058520.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: 21,439.815

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001691442-26-000002 · wk-form4_1772058512.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: 2,645.95

Underlying: Common Stock · 907.531 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001691442-26-000002 · wk-form4_1772058512.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: 7,673.736

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001691442-26-000002 · wk-form4_1772058512.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: 7,957.171

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001846302-26-000002 · wk-form4_1772058541.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,260.422

Underlying: Common Stock · 1,089.446 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001846302-26-000002 · wk-form4_1772058541.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,523.182

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001846302-26-000002 · wk-form4_1772058541.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,024.024

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001964855-26-000002 · wk-form4_1772058526.xml · derivative · entry 3

Chewning Eric D. · CIK 0001964855 · EVP, Maritime Sys & Corp STR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,824.625

Underlying: Common Stock · 605.021 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001964855-26-000002 · wk-form4_1772058526.xml · nonDerivative · entry 2

Chewning Eric D. · CIK 0001964855 · EVP, Maritime Sys & Corp STR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 604.666

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001964855-26-000002 · wk-form4_1772058526.xml · nonDerivative · entry 1

Chewning Eric D. · CIK 0001964855 · EVP, Maritime Sys & Corp STR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 798.277

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001569904-26-000002 · wk-form4_1772058506.xml · derivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,980.54

Underlying: Common Stock · 5,145.748 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001569904-26-000002 · wk-form4_1772058506.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,088.833

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001569904-26-000002 · wk-form4_1772058506.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,409.566

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001651056-26-000002 · wk-form4_1772058491.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 851.501

Underlying: Common Stock · 271.852 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.exercise_date: Each 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 ("LTISP") on 2/24/25 and vest ratably in three equal installments upon each of the first, second and third anniversaries of the grant date.

F2 · derivative.expiration_date: Each 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 ("LTISP") 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: 0001651056-26-000002 · wk-form4_1772058491.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,553.451

F1 · shares: Shares withheld by issuer for the payment of withholding taxes on Restricted Stock Rights ("RSRs") that vested on February 24, 2026.

SEC source: 0001651056-26-000002 · wk-form4_1772058491.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,690.303

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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: 0001465175-26-000002 · wk-form4_1767647841.xml · nonDerivative · entry 1

Jimenez Frank R · CIK 0001465175 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,140.486

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: 0001350579-26-000003 · wk-form4_1767647810.xml · nonDerivative · entry 1

Harker Victoria D · CIK 0001350579 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,662

SEC source: 0001281986-26-000004 · wk-form4_1767647821.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,161.529

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: 0001222207-26-000002 · wk-form4_1767647750.xml · nonDerivative · entry 1

WELCH JOHN K · CIK 0001222207 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,632.27

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: 0001216515-26-000002 · wk-form4_1767647804.xml · nonDerivative · entry 1

SCHIEVELBEIN THOMAS C · CIK 0001216515 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,866.11

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: 0001200231-26-000003 · wk-form4_1767647880.xml · nonDerivative · entry 1

KELLY ANASTASI D · CIK 0001200231 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 450

SEC source: 0001348489-26-000003 · wk-form4_1767647775.xml · nonDerivative · entry 1

Stanage Nick L · CIK 0001348489 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,639

SEC source: 0001579933-26-000002 · wk-form4_1767647827.xml · nonDerivative · entry 1

DONALD KIRKLAND H · CIK 0001579933 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,669.827

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: 0001842003-26-000002 · wk-form4_1767647798.xml · nonDerivative · entry 1

O'Sullivan Stephanie L. · CIK 0001842003 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,884.172

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: 0001584119-26-000002 · wk-form4_1767647783.xml · nonDerivative · entry 1

McKibben Tracy B · CIK 0001584119 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,443.869

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: 0001996124-26-000002 · wk-form4_1767647758.xml · nonDerivative · entry 1

Faller Craig S. · CIK 0001996124 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,735.868

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: 0001281986-26-000002 · wk-form4_1767388961.xml · nonDerivative · entry 1

DENAULT LEO P · CIK 0001281986 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,022.529

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: 0002049633-25-000006 · wk-form4_1765833671.xml · derivative · entry 1

Blanchette Brian D. · CIK 0002049633 · Ex VP and President, Ingalls

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,916.005

Underlying: Restricted Stock Rights · 12.258 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · shares: The amount acquired represents dividend equivalent rights on the RSRs, which are credited following payment of the Company's quarterly cash dividend. Pursuant to the LTISP, the number of dividend equivalent rights acquired is calculated by dividing the aggregate amount of the dividend paid on the total number of RSRs held by the reporting person by the closing price of a share of Company common stock on the dividend payment 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 ("LTISP") 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

SEC source: 0001920500-25-000011 · wk-form4_1765833632.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,429.646

Underlying: Common Stock · 10.213 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · shares: The amount acquired represents dividend equivalent rights on the RSRs, which are credited following payment of the Company's quarterly cash dividend. Pursuant to the LTISP, the number of dividend equivalent rights acquired is calculated by dividing the aggregate amount of the dividend paid on the total number of RSRs held by the reporting person by the closing price of a share of Company common stock on the dividend payment 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 ("LTISP") 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

SEC source: 0001852543-25-000006 · wk-form4_1765833759.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,553.481

Underlying: Common Stock · 14.937 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · shares: The amount acquired represents dividend equivalent rights on the RSRs, which are credited following payment of the Company's quarterly cash dividend. Pursuant to the LTISP, the number of dividend equivalent rights acquired is calculated by dividing the aggregate amount of the dividend paid on the total number of RSRs held by the reporting person by the closing price of a share of Company common stock on the dividend payment 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 ("LTISP") 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

SEC source: 0001808160-25-000008 · wk-form4_1765833713.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,826.354

Underlying: Common Stock · 16.084 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.

F2 · shares: The amount acquired represents dividend equivalent rights on the RSRs, which are credited following payment of the Company's quarterly cash dividend. Pursuant to the LTISP, the number of dividend equivalent rights acquired is calculated by dividing the aggregate amount of the dividend paid on the total number of RSRs held by the reporting person by the closing price of a share of Company common stock on the dividend payment 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 ("LTISP") 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 ("LTISP") and vest ratably in three equal installments upon each of the first, second, and third anniversaries of the grant date.