{"transactions":[{"id":763034,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2026-05-27T18:00:53.000Z","date":"2026-04-29","kind":"grant","planned":false,"acquired":true,"shares":630,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each deferred stock unit represents the right to receive one share of Cullen/Frost Bankers, Inc. common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The deferred stock units vested on April 29, 2026.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The deferred stock units vested on April 29, 2026.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."}],"balance_after":2860,"derivative":{"underlying":"Common Stock","underlying_shares":630},"source":{"system":"sec-edgar","filing":"0001964771-26-000002","document":"wk-form4_1779904850.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/39263/000196477126000002/wk-form4_1779904850.xml","form_type":"4"}},{"id":1163126,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2025-05-01T19:44:59.000Z","date":"2025-04-30","kind":"grant","planned":false,"acquired":true,"shares":730,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each deferred stock unit represents the right to receive one share of Cullen/Frost Bankers, Inc. common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The deferred stock units vested on April 30, 2025.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The deferred stock units vested on April 30, 2025.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."}],"balance_after":2230,"derivative":{"underlying":"Common Stock","underlying_shares":730},"source":{"system":"sec-edgar","filing":"0000039263-25-000082","document":"wk-form4_1746128692.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/39263/000003926325000082/wk-form4_1746128692.xml","form_type":"4"}},{"id":1535215,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2024-04-26T15:49:19.000Z","date":"2024-04-24","kind":"grant","planned":false,"acquired":true,"shares":727,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each deferred stock unit represents the right to receive one share of Cullen/Frost Bankers, Inc. common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The deferred stock units vested on April 24, 2024.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The deferred stock units vested on April 24, 2024.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."}],"balance_after":1500,"derivative":{"underlying":"Common Stock","underlying_shares":727},"source":{"system":"sec-edgar","filing":"0000950170-24-048794","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/39263/000095017024048794/ownership.xml","form_type":"4"}},{"id":1892893,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, $0.01 par value","published_at":"2023-05-16T14:56:48.000Z","date":"2023-05-15","kind":"purchase","planned":false,"acquired":true,"shares":2000,"price":98.6562,"value":197312.4,"ownership":{"direct":false,"nature":"Through Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price in Column 4 is based on a weighted average price.  The prices actually paid range from $98.595 to $98.82.  The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range set forth in footnote 1 to this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Reflects shares of Common Stock held by a trust of which Mr. Willome and his wife are co-trustees and beneficiaries."}],"balance_after":9000,"source":{"system":"sec-edgar","filing":"0001209191-23-029664","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/39263/000120919123029664/doc4.xml","form_type":"4"}},{"id":1911962,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2023-04-28T16:01:01.000Z","date":"2023-04-26","kind":"grant","planned":false,"acquired":true,"shares":773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each deferred stock unit represents the right to receive one share of Cullen/Frost Bankers, Inc. common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The deferred stock units vested on April 26, 2023.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The deferred stock units vested on April 26, 2023.  Shares will be delivered to the reporting person on the date when the reporting person experiences a separation from service with Cullen/Frost Bankers, Inc."}],"balance_after":773,"derivative":{"underlying":"Common Stock","underlying_shares":773},"source":{"system":"sec-edgar","filing":"0001209191-23-025983","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/39263/000120919123025983/doc4.xml","form_type":"4"}},{"id":1956076,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, $0.01 par value","published_at":"2023-03-14T19:38:30.000Z","date":"2023-03-13","kind":"purchase","acquired":true,"shares":1000,"price":108.3,"value":108300.0,"ownership":{"direct":false,"nature":"Through Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price in Column 4 is based on a weighted average price.  The prices actually paid range from $108.2345 to $108.3300.  The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range set forth in footnote 3 to this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Reflects shares of Common Stock held by a trust of which Mr. Willome and his wife are co-trustees and beneficiaries."}],"balance_after":7000,"source":{"system":"sec-edgar","filing":"0001209191-23-018401","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/39263/000120919123018401/doc4.xml","form_type":"4"}},{"id":1956075,"issuer":{"id":3533,"kind":"organization","name":"CULLEN/FROST BANKERS, INC."},"owners":[{"id":44050,"kind":"person","name":"John Howard Willome","position":1,"cik":"0001964771","reported_name":"John Howard Willome","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, $0.01 par value","published_at":"2023-03-14T19:38:30.000Z","date":"2023-03-13","kind":"purchase","acquired":true,"shares":1000,"price":105.7,"value":105700.0,"ownership":{"direct":false,"nature":"Through Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price in Column 4 is based on a weighted average price.  The prices actually paid range from $105.6550 to $105.7199.  The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range set forth in footnote 1 to this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Reflects shares of Common Stock held by a trust of which Mr. Willome and his wife are co-trustees and beneficiaries."}],"balance_after":6000,"source":{"system":"sec-edgar","filing":"0001209191-23-018401","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/39263/000120919123018401/doc4.xml","form_type":"4"}}]}