HWM

SEC source: 0001104659-25-047916 · tm2515004-1_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,859

F1 · price: The price reported in column 4 is a weighted average price. The shares are sold in multiple transactions at prices ranging from $156.00 to $161.45. The reporting person undertakes to provide Howmet Aerospace Inc. ("Howmet"), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.

SEC source: 0001104659-25-045748 · tm2514443-4_4seq1.xml · nonDerivative · entry 2

Shultz Barbara Lou · CIK 0001864896 · Vice President and Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,044

SEC source: 0001104659-25-045748 · tm2514443-4_4seq1.xml · nonDerivative · entry 1

Shultz Barbara Lou · CIK 0001864896 · Vice President and Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,294

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-25-045746 · tm2514443-5_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,859

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-25-045745 · tm2514443-3_4seq1.xml · nonDerivative · entry 1

LIN LOLA FELICE · CIK 0001870422 · EVP, CL&CO and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,252

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-25-045744 · tm2514443-2_4seq1.xml · nonDerivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,365

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-25-045743 · tm2514443-1_4seq1.xml · nonDerivative · entry 1

Giacobbe Ken · CIK 0001688603 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,079

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-25-046866 · tm2514644-1_4aseq1.xml · nonDerivative · entry 1

Giacobbe Ken · CIK 0001688603 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 182,285

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

F2 · shares: This amendment is being filed to reflect a corrected calculation of the number of shares withheld for payment of the reporting person's tax liability incident to the vesting of previously issued restricted stock units, and to correct the number of shares held directly by the reporting person following this change.

F2 · balance_after: This amendment is being filed to reflect a corrected calculation of the number of shares withheld for payment of the reporting person's tax liability incident to the vesting of previously issued restricted stock units, and to correct the number of shares held directly by the reporting person following this change.

SEC source: 0001104659-25-031783 · tm2511506-2_4seq1.xml · nonDerivative · entry 1

LEDUC ROBERT F · CIK 0001184190 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,015

SEC source: 0001104659-25-031784 · tm2511506-3_4seq1.xml · nonDerivative · entry 1

Miller Jody · CIK 0001325501 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,319

SEC source: 0001104659-25-031782 · tm2511506-1_4seq1.xml · nonDerivative · entry 1

CANTIE JOSEPH S · CIK 0001275621 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,507

SEC source: 0001104659-25-061860 · tm2518757-1_4aseq1.xml · nonDerivative · entry 1

LEDUC ROBERT F · CIK 0001184190 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,970

F1 · shares: This amendment is being filed to correct a clerical error in reporting the number of deferred restricted share units (RSUs) acquired on April 2, 2025, and to correct the number of shares held by the reporting person following this change.

SEC source: 0001104659-25-015752 · tm257235-5_4seq1.xml · nonDerivative · entry 1

PLANT JOHN C · CIK 0001136562 · Director · Executive Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,193,671

F1 · shares: Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-015754 · tm257235-6_4seq1.xml · nonDerivative · entry 1

Shultz Barbara Lou · CIK 0001864896 · Vice President and Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,529

F1 · shares: Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-015749 · tm257235-2_4seq1.xml · nonDerivative · entry 1

Giacobbe Ken · CIK 0001688603 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 212,758

F1 · shares: Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-015750 · tm257235-3_4seq1.xml · nonDerivative · entry 2

LIN LOLA FELICE · CIK 0001870422 · EVP, CL&CO and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,134

F2 · price: The price reported in column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $136.3761 to $136.43. The reporting person undertakes to provide Howmet Aerospace Inc. ("Howmet"), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.

SEC source: 0001104659-25-015750 · tm257235-3_4seq1.xml · nonDerivative · entry 1

LIN LOLA FELICE · CIK 0001870422 · EVP, CL&CO and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,754

F1 · shares: Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-015751 · tm257235-4_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,131

F1 · shares: Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-015748 · tm257235-1_4seq1.xml · nonDerivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 179,654

F1 · shares: Reflects granted restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-010654 · tm255948-5_4seq1.xml · nonDerivative · entry 1

Shultz Barbara Lou · CIK 0001864896 · Vice President and Controller

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,704

F1 · shares: Reflects earned restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-010651 · tm255948-4_4seq1.xml · nonDerivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,849

F1 · shares: Reflects earned restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-010649 · tm255948-3_4seq1.xml · nonDerivative · entry 1

Giacobbe Ken · CIK 0001688603 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,904

F1 · shares: Reflects earned restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-010646 · tm255948-2_4seq1.xml · nonDerivative · entry 1

LIN LOLA FELICE · CIK 0001870422 · EVP, CL&CO and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,715

F1 · shares: Reflects earned restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-010644 · tm255948-1_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 187,692

F1 · shares: Reflects earned restricted share unit awards that are subject to vesting and tax withholding upon vesting.

SEC source: 0001104659-25-001692 · tm252210-2_4seq1.xml · nonDerivative · entry 1

CANTIE JOSEPH S · CIK 0001275621 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,255

SEC source: 0001104659-25-001691 · tm252210-1_4seq1.xml · nonDerivative · entry 1

LEDUC ROBERT F · CIK 0001184190 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,926

SEC source: 0001104659-24-132543 · tm2432243-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 609

Underlying: Common Stock · 146 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-124730 · tm2429972-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 462

Underlying: Common Stock · 138 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-113958 · tm2427422-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 325

Underlying: Common Stock · 163 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-110609 · tm2426672-1_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,687

SEC source: 0001104659-24-105873 · tm2425564-2_4seq1.xml · nonDerivative · entry 1

CANTIE JOSEPH S · CIK 0001275621 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,956

SEC source: 0001104659-24-105871 · tm2425564-1_4seq1.xml · nonDerivative · entry 1

LEDUC ROBERT F · CIK 0001184190 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,827

SEC source: 0001104659-24-105064 · tm2425376-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 162

Underlying: Common Stock · 162 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-098311 · tm2423676-1_4seq1.xml · derivative · entry 4

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 53,401 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.

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

F1 · price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

F1 · derivative.exercise_date: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

F1 · derivative.expiration_date: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

SEC source: 0001104659-24-098311 · tm2423676-1_4seq1.xml · nonDerivative · entry 2

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,053

F1 · balance_after: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

SEC source: 0001104659-24-098311 · tm2423676-1_4seq1.xml · nonDerivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,454

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.

F1 · price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

F1 · balance_after: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock. Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan. As permitted by the plan, the reporting person transferred the phantom stock units into an alternative investment account under the plan.

SEC source: 0001104659-24-096976 · tm2423405-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,374

Underlying: Common Stock · 151 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-092973 · tm2422736-1_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,687

F1 · price: The price reported in column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.41 to $97.54. The reporting person undertakes to provide Howmet Aerospace Inc. ("Howmet"), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.

SEC source: 0001104659-24-092490 · tm2422556-1_4seq1.xml · nonDerivative · entry 1

Giacobbe Ken · CIK 0001688603 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 155,135

F1 · price: The price reported in column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.2437 to $97.03. The reporting person undertakes to provide Howmet Aerospace Inc. ("Howmet"), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.

SEC source: 0001104659-24-085482 · tm2420808-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,186

Underlying: Common Stock · 110 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-077986 · tm2418962-2_4seq1.xml · nonDerivative · entry 1

LEDUC ROBERT F · CIK 0001184190 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,716

SEC source: 0001104659-24-077984 · tm2418962-1_4seq1.xml · nonDerivative · entry 1

CANTIE JOSEPH S · CIK 0001275621 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,623

SEC source: 0001104659-24-077447 · tm2418774-3_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,324

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-24-077446 · tm2418774-2_4seq1.xml · nonDerivative · entry 1

Giacobbe Ken · CIK 0001688603 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 310,044

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 16b-3.

SEC source: 0001104659-24-077443 · tm2418774-1_4seq1.xml · derivative · entry 3

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,227

Underlying: Common Stock · 136 shares

Expires not disclosed

F2 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F3 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F3 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-077443 · tm2418774-1_4seq1.xml · nonDerivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,053

F1 · shares: Represents payment of tax liability by delivering or withholding shares incident to the vesting of a stock award issued in accordance with Rule 10b-3.

SEC source: 0001104659-24-072432 · tm2417483-1_4seq1.xml · nonDerivative · entry 1

SCHMIDT ULRICH · CIK 0001142262 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,467

F1 · kind: On June 13, 2024, the reporting person transferred 5,333 shares of HWM common stock to a family trust for no consideration. The reporting person is trustee of the trust, and the reporting person's spouse is the primary beneficiary of the trust. The reporting person disclaims beneficial ownership of these shares.

F1 · ownership.direct: On June 13, 2024, the reporting person transferred 5,333 shares of HWM common stock to a family trust for no consideration. The reporting person is trustee of the trust, and the reporting person's spouse is the primary beneficiary of the trust. The reporting person disclaims beneficial ownership of these shares.

SEC source: 0001104659-24-068369 · tm2416463-1_4seq1.xml · nonDerivative · entry 1

Marchuk Neil Edward · CIK 0001301291 · EVP, HR

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 217,687

F1 · price: The price reported in column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $84.16 to $84.38. The reporting person undertakes to provide Howmet Aerospace Inc. ("Howmet"), any security holder of Howmet, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth in this footnote.

SEC source: 0001104659-24-067954 · tm2416357-1_4seq1.xml · derivative · entry 1

CHANATRY MICHAEL NIEM · CIK 0001898777 · Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,023

Underlying: Common Stock · 125 shares

Expires not disclosed

F1 · derivative.exercise_price: Each phantom stock unit is the economic equivalent of one share of Howmet Aerospace common stock.

F2 · derivative.exercise_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

F2 · derivative.expiration_date: Phantom stock units were acquired under the Howmet Aerospace Deferred Compensation Plan and will be paid out in cash after termination of employment. The reporting person may transfer the phantom stock units into an alternative investment account under the plan at times permitted under the plan.

SEC source: 0001104659-24-066285 · tm2415880-5_4seq1.xml · nonDerivative · entry 1

LEDUC ROBERT F · CIK 0001184190 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,551