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The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which at the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $21.66 to $21.69. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which at the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 1,584 shares restricted stock granted on May 8, 2023, which vest on May 8, 2024."}],"balance_after":112137,"source":{"system":"sec-edgar","filing":"0001437749-23-032341","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774923032341/rdgdoc.xml","form_type":"4"}},{"id":1739216,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-11-16T21:11:30.000Z","date":"2023-11-14","kind":"sale","planned":false,"acquired":false,"shares":20000,"price":20.99,"value":419800.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades at prices ranging from $20.03 to $21.21. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which at the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $21.66 to $21.69. The price reported above reflects the weighted average sale price. 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The restricted stock fully vests on the earlier of (a) June 22, 2023, or (b) the day immediately prior to the next annual meeting of shareholders following the grant."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 1,182 shares of unvested restricted stock, all of which will vest on the earlier of (a) June 22, 2023, or (b) the day immediately prior to the next annual meeting of shareholders following the grant.  Under the terms of the relevant restricted stock grants, the reported shares of unvested restricted stock are subject to forfeiture upon the occurrence of certain events.  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Under the terms of the relevant restricted stock grants, the reported shares of unvested restricted stock are subject to forfeiture upon the occurrence of certain events."}],"balance_after":141080,"source":{"system":"sec-edgar","filing":"0001437749-22-008231","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774922008231/rdgdoc.xml","form_type":"4"}},{"id":2414271,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"Common Stock","published_at":"2022-02-03T21:05:22.000Z","date":"2022-02-01","kind":"grant","acquired":true,"shares":10063,"price":27.13,"value":273009.19,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reflects the grant of restricted stock to reporting person. The terms of the restricted stock grant are described in footnote 2 below."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 10,063 shares of unvested restricted stock granted on 2/1/2022, of which 3,321 shares will vest on 3/31/2022, 3,321 shares will vest on 3/31/2023, and the remaining 3,421 shares will vest on 3/31/2024.  Under the terms of the relevant restricted stock grants, the reported shares of unvested restricted stock are subject to forfeiture upon the occurrence of certain events."}],"balance_after":142098,"source":{"system":"sec-edgar","filing":"0001437749-22-002372","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774922002372/rdgdoc.xml","form_type":"4"}},{"id":2492203,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"COMMON STOCK","published_at":"2021-12-01T00:11:26.000Z","date":"2021-11-18","kind":"sale","acquired":false,"shares":5000,"price":27.64,"value":138200.0,"ownership":{"direct":true},"balance_after":132035,"source":{"system":"sec-edgar","filing":"0001437749-21-027581","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774921027581/rdgdoc.xml","form_type":"4"}},{"id":2492202,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"COMMON STOCK","published_at":"2021-12-01T00:11:26.000Z","date":"2021-11-18","kind":"sale","acquired":false,"shares":397,"price":27.54,"value":10933.38,"ownership":{"direct":true},"balance_after":137035,"source":{"system":"sec-edgar","filing":"0001437749-21-027581","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774921027581/rdgdoc.xml","form_type":"4"}},{"id":2492201,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"COMMON STOCK","published_at":"2021-12-01T00:11:26.000Z","date":"2021-11-16","kind":"sale","acquired":false,"shares":1377,"price":28,"value":38556.0,"ownership":{"direct":true},"balance_after":137432,"source":{"system":"sec-edgar","filing":"0001437749-21-027581","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774921027581/rdgdoc.xml","form_type":"4"}},{"id":2492200,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"COMMON STOCK","published_at":"2021-12-01T00:11:26.000Z","date":"2021-11-10","kind":"sale","acquired":false,"shares":8519,"price":29,"value":247051.0,"ownership":{"direct":true},"balance_after":138809,"source":{"system":"sec-edgar","filing":"0001437749-21-027581","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774921027581/rdgdoc.xml","form_type":"4"}},{"id":2492199,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"COMMON STOCK","published_at":"2021-12-01T00:11:26.000Z","date":"2021-09-09","kind":"grant","acquired":true,"shares":15293,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Acquired under the Pedestal Bancshares, Inc. Employee Stock Ownership Plan. Transaction exempt under rule 16b-3(c)."}],"balance_after":147328,"source":{"system":"sec-edgar","filing":"0001437749-21-027581","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774921027581/rdgdoc.xml","form_type":"4"}},{"id":2492198,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP,Chief Risk Officer- b1BANK"}}],"security":"COMMON STOCK","published_at":"2021-12-01T00:11:26.000Z","date":"2021-06-30","kind":"gift","acquired":true,"shares":8000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":132035,"source":{"system":"sec-edgar","filing":"0001437749-21-027581","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774921027581/rdgdoc.xml","form_type":"4"}},{"id":3161512,"issuer":{"id":4961,"kind":"organization","name":"Business First Bancshares, Inc."},"owners":[{"id":34842,"kind":"person","name":"Folse Mark P.","position":1,"cik":"0001811376","reported_name":"Folse Mark P.","relationship":{"director":true,"officer":true,"officer_title":"EVP - b1BANK"}}],"security":"Common Stock","published_at":"2020-05-06T01:56:11.000Z","date":"2020-05-01","kind":"grant","acquired":true,"shares":124035,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Acquired in exchange for 71,081 shares of Pedestal Bancshares, Inc. (\"Pedestal\") in connection with the merger of Pedestal with and into the issuer (the \"Merger\").  At the effective time of the Merger, each share of Pedestal common stock was converted into the right to receive approximately 1.745 shares of the issuer's common stock.  On the effective date of the Merger, the closing price of the issuer's common stock was $12.96 per share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Acquired in exchange for 71,081 shares of Pedestal Bancshares, Inc. (\"Pedestal\") in connection with the merger of Pedestal with and into the issuer (the \"Merger\").  At the effective time of the Merger, each share of Pedestal common stock was converted into the right to receive approximately 1.745 shares of the issuer's common stock.  On the effective date of the Merger, the closing price of the issuer's common stock was $12.96 per share."}],"balance_after":124035,"source":{"system":"sec-edgar","filing":"0001437749-20-009504","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1811376/000143774920009504/rdgdoc.xml","form_type":"4"}}]}