{"transactions":[{"id":758482,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-29T23:07:18.000Z","date":"2026-05-28","kind":"grant","planned":false,"acquired":true,"shares":5513,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Mechanics Bancorp (the \"Company\") Class A common stock.  RSUs do not require the holder to pay any consideration on vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On May 28, 2026, the Reporting Person was granted 5,513 RSUs, which vest on May 28, 2027.  Upon vesting, the Reporting Person will receive a number of shares of the Company's Class A common stock equal to the number of RSU's that vest on that date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On May 28, 2026, the Reporting Person was granted 5,513 RSUs, which vest on May 28, 2027.  Upon vesting, the Reporting Person will receive a number of shares of the Company's Class A common stock equal to the number of RSU's that vest on that date."}],"balance_after":5513,"derivative":{"underlying":"Class A Common Stock","underlying_shares":5513},"source":{"system":"sec-edgar","filing":"0002104981-26-000005","document":"wk-form4_1780096036.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000210498126000005/wk-form4_1780096036.xml","form_type":"4"}},{"id":758481,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-29T23:07:18.000Z","date":"2026-05-27","kind":"exercise","planned":false,"acquired":false,"shares":3301,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Mechanics Bancorp (the \"Company\") Class A common stock.  RSUs do not require the holder to pay any consideration on vesting."},{"field":"shares","element":"transactionShares","label":"F2","text":"Granted but unvested RSUs were previously reported in Table I.  Going forward, granted but unvested RSUs will be reported in Table II and will be reported in Table I when they vest and convert into Class A common stock.  Share totals of securities beneficially owned following reported transaction(s) reported in Table I have been adjusted to reflect this change in reporting and do not include unvested RSUs."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On May 21, 2025, the Reporting Person was granted the equivalent of 3,301 of the Company's RSUs, which vest on May 27, 2026.  Upon vesting, the Reporting Person will receive a number of shares of the Company's Class A common stock equal to the number of RSU's that vest on that date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On May 21, 2025, the Reporting Person was granted the equivalent of 3,301 of the Company's RSUs, which vest on May 27, 2026.  Upon vesting, the Reporting Person will receive a number of shares of the Company's Class A common stock equal to the number of RSU's that vest on that date."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":3301},"source":{"system":"sec-edgar","filing":"0002104981-26-000005","document":"wk-form4_1780096036.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000210498126000005/wk-form4_1780096036.xml","form_type":"4"}},{"id":758480,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-05-29T23:07:18.000Z","date":"2026-05-27","kind":"exercise","planned":false,"acquired":true,"shares":3301,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Douglas E Downer Revocable Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents a contingent right to receive one share of Mechanics Bancorp (the \"Company\") Class A common stock.  RSUs do not require the holder to pay any consideration on vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Granted but unvested RSUs were previously reported in Table I.  Going forward, granted but unvested RSUs will be reported in Table II and will be reported in Table I when they vest and convert into Class A common stock.  Share totals of securities beneficially owned following reported transaction(s) reported in Table I have been adjusted to reflect this change in reporting and do not include unvested RSUs."}],"balance_after":2317764,"source":{"system":"sec-edgar","filing":"0002104981-26-000005","document":"wk-form4_1780096036.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000210498126000005/wk-form4_1780096036.xml","form_type":"4"}},{"id":830616,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Incentive Units - Deferred","published_at":"2026-03-23T17:19:27.000Z","date":"2025-09-02","kind":"grant","planned":false,"acquired":true,"shares":2554,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"As consideration for the Merger, (i) each share of MB voting common stock converted into the right to receive 3,301.0920 shares of Issuer Class A Common Stock, which, on the effective date of the Merger, had a closing price of $13.87 per share, (ii) each MB restricted stock unit of the Reporting Person converted into restricted stock units of Issuer for the right to receive 3,301.0920 shares of Issuer Class A Common Stock, and (iii) each MB incentive unit of the Reporting Person converted into incentive units of Issuer of the economic equivalent of 3,301.0920 shares of Issuer Class A Common Stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each incentive unit is the economic equivalent of one share of Issuer Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Reporting Person has elected to defer payment on such incentive units until the earlier of (i) the retirement or termination of the Reporting Person, or (ii) a change in control of Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The Reporting Person has elected to defer payment on such incentive units until the earlier of (i) the retirement or termination of the Reporting Person, or (ii) a change in control of Issuer."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F8","text":"Includes 37 dividend equivalent incentive units acquired on December 15, 2025."}],"balance_after":2591,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2554},"source":{"system":"sec-edgar","filing":"0001518715-26-000028","document":"wk-form4_1774286364.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000151871526000028/wk-form4_1774286364.xml","form_type":"4"}},{"id":830615,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-03-23T17:19:27.000Z","date":"2025-10-07","kind":"gift","planned":false,"acquired":false,"shares":75000,"ownership":{"direct":false,"nature":"Douglas E Downer Revocable Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"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."}],"balance_after":2317764,"source":{"system":"sec-edgar","filing":"0001518715-26-000028","document":"wk-form4_1774286364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000151871526000028/wk-form4_1774286364.xml","form_type":"4"}},{"id":830614,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-03-23T17:19:27.000Z","date":"2025-10-07","kind":"gift","planned":false,"acquired":false,"shares":75000,"ownership":{"direct":false,"nature":"Douglas E Downer Revocable Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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."}],"balance_after":2392764,"source":{"system":"sec-edgar","filing":"0001518715-26-000028","document":"wk-form4_1774286364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000151871526000028/wk-form4_1774286364.xml","form_type":"4"}},{"id":830613,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-03-23T17:19:27.000Z","date":"2025-09-02","kind":"grant","planned":false,"acquired":true,"shares":1121270,"ownership":{"direct":false,"nature":"Douglas Downer Family Dynasty Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"As consideration for the Merger, (i) each share of MB voting common stock converted into the right to receive 3,301.0920 shares of Issuer Class A Common Stock, which, on the effective date of the Merger, had a closing price of $13.87 per share, (ii) each MB restricted stock unit of the Reporting Person converted into restricted stock units of Issuer for the right to receive 3,301.0920 shares of Issuer Class A Common Stock, and (iii) each MB incentive unit of the Reporting Person converted into incentive units of Issuer of the economic equivalent of 3,301.0920 shares of Issuer Class A Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Received in exchange of 339 shares of MB original voting common stock in connection with the Merger.  E. Michael Downer is the voting trustee for the Douglas Downer Family Dynasty Trust."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Received in exchange of 339 shares of MB original voting common stock in connection with the Merger.  E. Michael Downer is the voting trustee for the Douglas Downer Family Dynasty Trust."}],"balance_after":1121270,"source":{"system":"sec-edgar","filing":"0001518715-26-000028","document":"wk-form4_1774286364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000151871526000028/wk-form4_1774286364.xml","form_type":"4"}},{"id":830612,"issuer":{"id":4145,"kind":"organization","name":"Mechanics Bancorp"},"owners":[{"id":43121,"kind":"person","name":"Downer Douglas E","position":1,"cik":"0002104981","reported_name":"Downer Douglas E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2026-03-23T17:19:27.000Z","date":"2025-09-02","kind":"grant","planned":false,"acquired":true,"shares":2467764,"ownership":{"direct":false,"nature":"Douglas E Downer Revocable Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Received in exchange for an aggregate of 747 shares of Mechanics Bank (\"MB\") original voting common stock and MB restricted stock units in connection with the merger of HomeStreet Bank, a wholly owned subsidiary of Issuer, with and into MB, pursuant to which MB continued as the surviving corporation and as a wholly owned subsidiary of Issuer (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"As consideration for the Merger, (i) each share of MB voting common stock converted into the right to receive 3,301.0920 shares of Issuer Class A Common Stock, which, on the effective date of the Merger, had a closing price of $13.87 per share, (ii) each MB restricted stock unit of the Reporting Person converted into restricted stock units of Issuer for the right to receive 3,301.0920 shares of Issuer Class A Common Stock, and (iii) each MB incentive unit of the Reporting Person converted into incentive units of Issuer of the economic equivalent of 3,301.0920 shares of Issuer Class A Common Stock."}],"balance_after":2467764,"source":{"system":"sec-edgar","filing":"0001518715-26-000028","document":"wk-form4_1774286364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1518715/000151871526000028/wk-form4_1774286364.xml","form_type":"4"}}]}