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(\"First Financial\") and MainSource Financial Group, Inc. (\"MainSource\"), dated July 25, 2017 (the \"Merger Agreement\"), pursuant to which MainSource was merged with and into First Financial on April 1, 2018 (the \"Effective Time\"). Pursuant to the Merger Agreement, as of the Effective Time, (i) each issued and outstanding share of MainSource's common stock converted into the right to receive 1.3875 shares of First Financial common stock and cash in lieu of fractional shares (the \"Merger Consideration\"), and (ii) each outstanding restricted share and each outstanding performance share unit fully vested and was cancelled and converted automatically into the right to receive the Merger Consideration in respect of each share of MainSource's common stock underlying such award, less applicable tax withholdings. On the trading day immediately preceding Effective Date, the closing price of MainSource's common stock was $40.65 per share and the closing price of First Financial's common stock was $29.35 per share."}],"balance_after":14828,"source":{"system":"sec-edgar","filing":"0001127602-18-013878","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/708955/000112760218013878/form4.xml","form_type":"4"}},{"id":3975333,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2018-04-03T16:11:35.000Z","date":"2018-04-01","kind":"disposition_to_issuer","acquired":false,"shares":449,"ownership":{"direct":false,"nature":"By 401-k Plan"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On April 1, 2018, MainSource completed its previously announced merger (the \"Merger\") with First Financial Bancorp, pursuant to an Agreement and Plan of Merger, dated as of July 25, 2017, between MainSource and First Financial. In accordance with the terms of the Merger Agreement, at the effective time of the Merger each share of MainSource common stock issued an outstanding immediately prior to the Merger was converted into the right to receive 1.3875 shares of common stock of First Financial Bancorp. A cash payment of equal value was made in lieu of the issuance of fractional share"}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001179110-18-005206","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911018005206/edgar.xml","form_type":"4"}},{"id":3975332,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2018-04-03T16:11:35.000Z","date":"2018-04-01","kind":"disposition_to_issuer","acquired":false,"shares":6795,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On April 1, 2018, MainSource completed its previously announced merger (the \"Merger\") with First Financial Bancorp, pursuant to an Agreement and Plan of Merger, dated as of July 25, 2017, between MainSource and First Financial. In accordance with the terms of the Merger Agreement, at the effective time of the Merger each share of MainSource common stock issued an outstanding immediately prior to the Merger was converted into the right to receive 1.3875 shares of common stock of First Financial Bancorp. A cash payment of equal value was made in lieu of the issuance of fractional share"}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001179110-18-005206","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911018005206/edgar.xml","form_type":"4"}},{"id":3979057,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2018-03-30T16:15:42.000Z","date":"2018-03-28","kind":"tax_withholding","acquired":false,"shares":446,"price":39.45,"value":17594.7,"ownership":{"direct":true},"balance_after":6795,"source":{"system":"sec-edgar","filing":"0001179110-18-004949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911018004949/edgar.xml","form_type":"4"}},{"id":3979056,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2018-03-30T16:15:42.000Z","date":"2018-03-28","kind":"tax_withholding","acquired":false,"shares":3000,"price":39.45,"value":118350.0,"ownership":{"direct":true},"balance_after":7241,"source":{"system":"sec-edgar","filing":"0001179110-18-004949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911018004949/edgar.xml","form_type":"4"}},{"id":3979055,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2018-03-30T16:15:42.000Z","date":"2018-03-28","kind":"tax_withholding","acquired":false,"shares":446,"price":39.54,"value":17634.84,"ownership":{"direct":true},"balance_after":10241,"source":{"system":"sec-edgar","filing":"0001179110-18-004949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911018004949/edgar.xml","form_type":"4"}},{"id":3979054,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2018-03-30T16:15:42.000Z","date":"2018-03-28","kind":"grant","acquired":true,"shares":1113,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Total reported includes 206 shares acquired through the reinvestment of cash dividends between 02/27/2017 and 03/28/2018"}],"balance_after":10687,"source":{"system":"sec-edgar","filing":"0001179110-18-004949","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911018004949/edgar.xml","form_type":"4"}},{"id":4415960,"issuer":{"id":167861,"kind":"organization","name":"MAINSOURCE FINANCIAL GROUP","symbol":"MSFG"},"owners":[{"id":55925,"kind":"person","name":"Woods Karen B","position":1,"cik":"0001662727","reported_name":"Woods Karen B","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Chief Risk Officer"}}],"security":"Common Stock","published_at":"2017-03-01T15:04:37.000Z","date":"2017-02-27","kind":"grant","acquired":true,"shares":1113,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Total reported includes 185 shares acquired through the reinvestment of cash dividends between 01/05/2016 and 02/27/2017."}],"balance_after":9368,"source":{"system":"sec-edgar","filing":"0001179110-17-003461","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/720002/000117911017003461/edgar.xml","form_type":"4"}}]}