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SFNC shares will be delivered within 30 days of vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Restricted Stock Unit vested on January 10, 2020. 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SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other\nspecified events in the agreement may result in earlier vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"1,253 Restricted Stock Units vest on December 16, 2020; 1,254 Restricted Stock Units vest on December 16, 2021 and 1,254 Restricted Stock Units\nvest on December 16, 2022. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other\nspecified events in the agreement may result in earlier vesting."}],"balance_after":3761,"derivative":{"underlying":"Common","underlying_shares":3761},"source":{"system":"sec-edgar","filing":"0001171843-19-008214","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/90498/000117184319008214/ownership.xml","form_type":"4"}},{"id":3370767,"issuer":{"id":4185,"kind":"organization","name":"SIMMONS FIRST NATIONAL CORP","symbol":"SFNC"},"owners":[{"id":129846,"kind":"person","name":"Kanneman Paul D","position":1,"cik":"0001693249","reported_name":"Kanneman Paul D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"SFNC","published_at":"2019-11-15T18:04:30.000Z","date":"2019-11-14","kind":"sale","acquired":false,"shares":1013,"price":25.06,"value":25385.78,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Previously, shares of SFNC common stock beneficially owned directly by the Reporting Person (\"Shares\") were reported on separate lines to reflect their location in particular brokerage accounts. These Shares have now been consolidated into a single line."}],"balance_after":8785,"source":{"system":"sec-edgar","filing":"0001171843-19-007582","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/90498/000117184319007582/ownership.xml","form_type":"4"}},{"id":3628027,"issuer":{"id":4185,"kind":"organization","name":"SIMMONS FIRST NATIONAL CORP","symbol":"SFNC"},"owners":[{"id":129846,"kind":"person","name":"Kanneman Paul D","position":1,"cik":"0001693249","reported_name":"Kanneman Paul D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Performance Stock Unit","published_at":"2019-02-28T20:54:12.000Z","date":"2019-02-26","kind":"grant","acquired":true,"shares":5098,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each Performance Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The shares listed are the maximum number of shares which may vest under this grant. Vesting will occur subsequent to the attainment of performance goals set and verified by the Compensation Committee of the Company's Board of Directors for the performance period ending December 31, 2021, contingent upon the reporting person's continued employment with the registrant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The shares listed are the maximum number of shares which may vest under this grant. Vesting will occur subsequent to the attainment of performance goals set and verified by the Compensation Committee of the Company's Board of Directors for the performance period ending December 31, 2021, contingent upon the reporting person's continued employment with the registrant."}],"balance_after":5098,"derivative":{"underlying":"Common","underlying_shares":5098},"source":{"system":"sec-edgar","filing":"0001171843-19-001373","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/90498/000117184319001373/ownership.xml","form_type":"4"}},{"id":3628026,"issuer":{"id":4185,"kind":"organization","name":"SIMMONS FIRST NATIONAL CORP","symbol":"SFNC"},"owners":[{"id":129846,"kind":"person","name":"Kanneman Paul D","position":1,"cik":"0001693249","reported_name":"Kanneman Paul D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"Restricted Stock Unit","published_at":"2019-02-28T20:54:12.000Z","date":"2019-02-26","kind":"grant","acquired":true,"shares":2549,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"849 Restricted Stock Units vest on February 26, 2020; 850 Restricted Stock Units vest on February 26, 2021 and 850 Restricted Stock Units vest on February 26, 2022. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"849 Restricted Stock Units vest on February 26, 2020; 850 Restricted Stock Units vest on February 26, 2021 and 850 Restricted Stock Units vest on February 26, 2022. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting."}],"balance_after":2549,"derivative":{"underlying":"Common","underlying_shares":2549},"source":{"system":"sec-edgar","filing":"0001171843-19-001373","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/90498/000117184319001373/ownership.xml","form_type":"4"}},{"id":3648544,"issuer":{"id":4185,"kind":"organization","name":"SIMMONS FIRST NATIONAL CORP","symbol":"SFNC"},"owners":[{"id":129846,"kind":"person","name":"Kanneman Paul D","position":1,"cik":"0001693249","reported_name":"Kanneman Paul D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP"}}],"security":"SFNC","published_at":"2019-02-20T22:11:37.000Z","date":"2019-01-18","kind":"tax_withholding","acquired":false,"shares":215,"price":26.48,"value":5693.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The numbers of shares originally reported (259) was incorrectly stated due to a miscalculation. 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