MCHB

SEC source: 0002103004-26-000004 · wk-form4_1771467017.xml · nonDerivative · entry 2

Shields Kristie S · CIK 0002103004 · EVP & Chief Compliance Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,242

SEC source: 0002103004-26-000004 · wk-form4_1771467017.xml · nonDerivative · entry 1

Shields Kristie S · CIK 0002103004 · EVP & Chief Compliance Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,642

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 incentive unit represents a contingent right to receive one share of Issuer Class A common stock. Incentive units do not require the holder to pay any consideration upon vesting.

SEC source: 0002102022-26-000006 · wk-form4_1771466564.xml · derivative · entry 3

Kallingal Tony P · CIK 0002102022 · EVP & Chief Banking Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,162

Underlying: Class A Common Stock · 4,580 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 incentive unit is the economic equivalent of one share of Issuer Class A Common Stock.

F3 · derivative.exercise_date: The incentive units vest in two equal annual installments beginning February 15, 2027.

F3 · derivative.expiration_date: The incentive units vest in two equal annual installments beginning February 15, 2027.

SEC source: 0002102022-26-000006 · wk-form4_1771466564.xml · nonDerivative · entry 2

Kallingal Tony P · CIK 0002102022 · EVP & Chief Banking Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,542

SEC source: 0002102022-26-000006 · wk-form4_1771466564.xml · nonDerivative · entry 1

Kallingal Tony P · CIK 0002102022 · EVP & Chief Banking Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,429

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 incentive unit represents a contingent right to receive one share of Issuer Class A common stock. Incentive units do not require the holder to pay any consideration upon vesting.

SEC source: 0002103476-26-000004 · wk-form4_1771466506.xml · derivative · entry 3

Pierce Christopher D · CIK 0002103476 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,162

Underlying: Class A Common Stock · 4,580 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 incentive unit is the economic equivalent of one share of Issuer Class A Common Stock.

F3 · derivative.exercise_date: The incentive units vest in two equal annual installments beginning February 15, 2027.

F3 · derivative.expiration_date: The incentive units vest in two equal annual installments beginning February 15, 2027.

SEC source: 0002103476-26-000004 · wk-form4_1771466506.xml · nonDerivative · entry 2

Pierce Christopher D · CIK 0002103476 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,870

SEC source: 0002103476-26-000004 · wk-form4_1771466506.xml · nonDerivative · entry 1

Pierce Christopher D · CIK 0002103476 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,757

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 incentive unit represents a contingent right to receive one share of Issuer Class A common stock. Incentive units do not require the holder to pay any consideration upon vesting.

SEC source: 0001509989-26-000002 · wk-form4_1767660290.xml · nonDerivative · entry 3

Givans Scott A. · CIK 0001509989 · EVP & Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,114

SEC source: 0001602088-26-000002 · wk-form4_1767660532.xml · nonDerivative · entry 3

Duda Nathan · CIK 0001602088 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,597

SEC source: 0002102022-26-000004 · wk-form4_1767660456.xml · nonDerivative · entry 3

Kallingal Tony P · CIK 0002102022 · EVP & Chief Banking Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,849

SEC source: 0002102020-26-000004 · wk-form4_1767660222.xml · nonDerivative · entry 2

Pelayo Fernando · CIK 0002102020 · EVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,588

SEC source: 0002103476-26-000002 · wk-form4_1767660354.xml · nonDerivative · entry 3

Pierce Christopher D · CIK 0002103476 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,177

SEC source: 0002103004-26-000002 · wk-form4_1767660083.xml · nonDerivative · entry 2

Shields Kristie S · CIK 0002103004 · EVP & Chief Compliance Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,244

SEC source: 0002102635-26-000002 · wk-form4_1767659968.xml · nonDerivative · entry 2

Shrader Glenn C · CIK 0002102635 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,595

SEC source: 0001518715-26-000028 · wk-form4_1774286364.xml · nonDerivative · entry 4

Downer Douglas E · CIK 0002104981 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Douglas E Downer Revocable Trust

Disclosed balance after: 2,317,764

F5 · price: On October 7, 2025, the reporting person gifted 75,000 shares of the issuer's Class A common stock to his daughter's trust, Robert P. Downer, TTEE, Grace Y. Downer Irrevocable Tr U/A Dtd 7/23/25. The reporting person disclaims any pecuniary interest in these shares.

SEC source: 0001518715-26-000028 · wk-form4_1774286364.xml · nonDerivative · entry 3

Downer Douglas E · CIK 0002104981 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Douglas E Downer Revocable Trust

Disclosed balance after: 2,392,764

F4 · price: On October 7, 2025, the reporting person gifted 75,000 shares of the issuer's Class A common stock to his son's trust, Robert P. Downer, TTEE, Jack Y. Downer Irrevocable Tr U/A Dtd 7/23/25. The reporting person disclaims any pecuniary interest in these shares.

SEC source: 0001509989-26-000002 · wk-form4_1767660290.xml · nonDerivative · entry 2

Givans Scott A. · CIK 0001509989 · EVP & Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,773

SEC source: 0001602088-26-000002 · wk-form4_1767660532.xml · nonDerivative · entry 2

Duda Nathan · CIK 0001602088 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,500

SEC source: 0002102022-26-000004 · wk-form4_1767660456.xml · nonDerivative · entry 2

Kallingal Tony P · CIK 0002102022 · EVP & Chief Banking Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,216

SEC source: 0002102020-26-000004 · wk-form4_1767660222.xml · nonDerivative · entry 1

Pelayo Fernando · CIK 0002102020 · EVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,727

SEC source: 0002103476-26-000002 · wk-form4_1767660354.xml · nonDerivative · entry 2

Pierce Christopher D · CIK 0002103476 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,080

SEC source: 0002103004-26-000002 · wk-form4_1767660083.xml · nonDerivative · entry 1

Shields Kristie S · CIK 0002103004 · EVP & Chief Compliance Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,545

SEC source: 0002102635-26-000002 · wk-form4_1767659968.xml · nonDerivative · entry 1

Shrader Glenn C · CIK 0002102635 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,636

SEC source: 0001518715-25-000155 · wk-form4_1757035923.xml · nonDerivative · entry 4

Novak Diane P · CIK 0001992611 · EVP, CHIEF RISK OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,506

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000155 · wk-form4_1757035923.xml · nonDerivative · entry 3

Novak Diane P · CIK 0001992611 · EVP, CHIEF RISK OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,252

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F4 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000155 · wk-form4_1757035923.xml · nonDerivative · entry 2

Novak Diane P · CIK 0001992611 · EVP, CHIEF RISK OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,796

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000155 · wk-form4_1757035923.xml · nonDerivative · entry 1

Novak Diane P · CIK 0001992611 · EVP, CHIEF RISK OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,228

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000169 · wk-form4_1757037361.xml · nonDerivative · entry 4

Parr David L · CIK 0001866512 · EVP, DIR. OF COMM'L BANKING

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,773

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000169 · wk-form4_1757037361.xml · nonDerivative · entry 3

Parr David L · CIK 0001866512 · EVP, DIR. OF COMM'L BANKING

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,946

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F4 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000169 · wk-form4_1757037361.xml · nonDerivative · entry 2

Parr David L · CIK 0001866512 · EVP, DIR. OF COMM'L BANKING

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,000

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000169 · wk-form4_1757037361.xml · nonDerivative · entry 1

Parr David L · CIK 0001866512 · EVP, DIR. OF COMM'L BANKING

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,920

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000164 · wk-form4_1757036414.xml · nonDerivative · entry 2

Hand Erik D · CIK 0001813509 · EVP, Mortgage Lending Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,236

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F3 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000164 · wk-form4_1757036414.xml · nonDerivative · entry 1

Hand Erik D · CIK 0001813509 · EVP, Mortgage Lending Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,194

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000162 · wk-form4_1757036304.xml · nonDerivative · entry 2

Endresen William · CIK 0001672215 · EVP, Comm'l RE & Capital Pres.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,299

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F3 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000162 · wk-form4_1757036304.xml · nonDerivative · entry 1

Endresen William · CIK 0001672215 · EVP, Comm'l RE & Capital Pres.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,538

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000166 · wk-form4_1757036517.xml · nonDerivative · entry 4

Price Marlene L · CIK 0001410546 · EVP, Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,208

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000166 · wk-form4_1757036517.xml · nonDerivative · entry 3

Price Marlene L · CIK 0001410546 · EVP, Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,226

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F4 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000166 · wk-form4_1757036517.xml · nonDerivative · entry 2

Price Marlene L · CIK 0001410546 · EVP, Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,461

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000166 · wk-form4_1757036517.xml · nonDerivative · entry 1

Price Marlene L · CIK 0001410546 · EVP, Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,785

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000151 · wk-form4_1757035708.xml · nonDerivative · entry 4

MASON MARK K · CIK 0001396928 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 225,665

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000151 · wk-form4_1757035708.xml · nonDerivative · entry 3

MASON MARK K · CIK 0001396928 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 240,099

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F4 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000151 · wk-form4_1757035708.xml · nonDerivative · entry 2

MASON MARK K · CIK 0001396928 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 206,766

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000151 · wk-form4_1757035708.xml · nonDerivative · entry 1

MASON MARK K · CIK 0001396928 · Director · CEO, President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,196

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000167 · wk-form4_1757037029.xml · nonDerivative · entry 2

MICHEL JOHN · CIK 0001594287 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,150

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F4 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

F3 · balance_after: Excludes 5,527 shares transferred to the J. Michel and R. Michel TTEE, The Michel Family Tr U/A DTD 6/14/18 subsequent to the prior Form 4 filed for this Reporting Person.

SEC source: 0001518715-25-000167 · wk-form4_1757037029.xml · nonDerivative · entry 1

MICHEL JOHN · CIK 0001594287 · EVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,098

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

F3 · balance_after: Excludes 5,527 shares transferred to the J. Michel and R. Michel TTEE, The Michel Family Tr U/A DTD 6/14/18 subsequent to the prior Form 4 filed for this Reporting Person.

SEC source: 0001518715-25-000158 · wk-form4_1757036012.xml · nonDerivative · entry 4

LEMON PAULETTE · CIK 0001529657 · EVP - Retail Banking Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,160.2

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000158 · wk-form4_1757036012.xml · nonDerivative · entry 3

LEMON PAULETTE · CIK 0001529657 · EVP - Retail Banking Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,888.2

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F4 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2024. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.

SEC source: 0001518715-25-000158 · wk-form4_1757036012.xml · nonDerivative · entry 2

LEMON PAULETTE · CIK 0001529657 · EVP - Retail Banking Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,499.2

F3 · shares: Shares withheld by the Issuer in payment of the withholding tax liability incurred upon the above-reported settlement of PSUs.

SEC source: 0001518715-25-000158 · wk-form4_1757036012.xml · nonDerivative · entry 1

LEMON PAULETTE · CIK 0001529657 · EVP - Retail Banking Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,028.2

F1 · shares: Reflects shares of Issuer Class A common stock received upon vesting of performance stock units ("PSUs"). Pursuant to the Agreement and Plan of Merger, dated as of March 28, 2025, among HomeStreet, Inc., HomeStreet Bank, a subsidiary of HomeStreet, Inc., and Mechanics Bank, at the effective time of the merger on September 2, 2025, each outstanding PSU held by the Reporting Person was accelerated and entitled the Reporting Person to receive shares of Issuer Class A common stock, plus a cash amount for any accrued but unpaid dividends on the PSUs. In the merger, HomeStreet, Inc. was renamed Mechanics Bancorp.

F2 · price: Shares of Issuer Class A common stock were issued to the Reporting Person without payment of any consideration in connection with the vesting of a PSU award granted to the Reporting Person on January 1, 2023. The number of shares issued on the vesting of the PSU was determined based on the achievement of certain performance factors set forth in the PSU. The unvested portion of the PSU was cancelled.