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The 42,113 shares referenced in Footnote 2(b) were previously reported as covering 110,000 restricted stock units (which have now vested) and 311,126 shares of common stock beneficially owned by the Reporting Person. 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This retainer award was granted in lieu and satisfaction of the annual cash retainer compensation to be earned by the director for her service on a committee of the Issuer's Board of Directors that the reporting person was appointed to following the 2018 Annual Meeting of Stockholders. The number of shares of common stock subject to such retainer award is equal to the amount of cash that would have been received had the applicable retainer all been paid in cash, divided by the average daily closing market price of the Issuer's common stock for the month of March, rounded to the nearest 100 shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (a) a deferred stock award of 1,200 restricted stock units which vest quarterly in equal installments on June 30, 2018, September 30, 2018 and December 31, 2018 as described in footnote 1 above; (b) a deferred stock award of 18,100 restricted stock units which fully vest on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders after May 17, 2018, immediately prior to the commencement of such meeting, and (ii) May 17, 2019; (c) a deferred stock award of 8,325 restricted stock units which vest quarterly in equal installments on June 30, 2018, September 30, 2018 and December 31, 2018; and (d) 5,075 shares of common stock held by the Reporting Person."}],"balance_after":32700,"source":{"system":"sec-edgar","filing":"0001209191-18-035658","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1123494/000120919118035658/doc4.xml","form_type":"4"}},{"id":3915793,"issuer":{"id":7369,"kind":"organization","name":"HARVARD BIOSCIENCE INC"},"owners":[{"id":38926,"kind":"person","name":"Eade Katherine A.","position":1,"cik":"0001721318","reported_name":"Eade Katherine A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-05-29T20:43:15.000Z","date":"2018-05-24","kind":"grant","acquired":true,"shares":18100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a deferred stock award of 18,100 restricted stock units which fully vest on the earlier to occur of (i) the date of the Issuer's next Annual Meeting of Stockholders after May 17, 2018, immediately prior to the commencement of such meeting, and (ii) May 24, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (a) a deferred stock award of 18,100 restricted stock units which fully vest on the earlier of (i) the date of the Issuer's next Annual Meeting of Stockholders after May 17, 2018, immediately prior to the commencement of such meeting, and (ii) May 17, 2019; (b) a deferred stock award of 8,325 restricted stock units which vest quarterly in equal installments on June 30, 2018, September 30, 2018 and December 31, 2018; and (c) 5,075 shares of common stock held by the Reporting Person."}],"balance_after":31500,"source":{"system":"sec-edgar","filing":"0001209191-18-033858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1123494/000120919118033858/doc4.xml","form_type":"4"}},{"id":4108041,"issuer":{"id":7369,"kind":"organization","name":"HARVARD BIOSCIENCE INC"},"owners":[{"id":38926,"kind":"person","name":"Eade Katherine A.","position":1,"cik":"0001721318","reported_name":"Eade Katherine A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-01-04T13:30:45.000Z","date":"2018-01-02","kind":"grant","acquired":true,"shares":11100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a deferred stock award of 11,100 restricted stock units which vest quarterly in equal installments on March 31, 2018, June 30, 2018, September 30, 2018 and December 31, 2018, and are subject to continued service as a non-employee director on the applicable vesting dates. These retainer awards are granted in lieu and satisfaction of the annual cash retainer compensation to be earned by the director for her service on the Issuer's Board of Directors and its Committees during 2018. The number of shares of common stock subject to such retainer award is equal to the amount of cash that would have been received had the retainers all been paid in cash, divided by the average daily closing market price of the Issuer's common stock for the month of November, rounded to the nearest 100 shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes (a) a deferred stock award of 11,100 restricted stock units which vest quarterly in equal installments on March 31, 2018, June 30, 2018, September 30, 2018 and December 31, 2018; and (b) 2,300 shares of common stock held by the Reporting Person."}],"balance_after":13400,"source":{"system":"sec-edgar","filing":"0001209191-18-001612","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1123494/000120919118001612/doc4.xml","form_type":"4"}},{"id":4176552,"issuer":{"id":7369,"kind":"organization","name":"HARVARD BIOSCIENCE INC"},"owners":[{"id":38926,"kind":"person","name":"Eade Katherine A.","position":1,"cik":"0001721318","reported_name":"Eade Katherine A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (right to buy)","published_at":"2017-11-01T21:11:40.000Z","date":"2017-10-30","kind":"grant","acquired":true,"shares":87600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest in three equal installments on October 30, 2018, 2019 and 2020."}],"balance_after":87600,"derivative":{"exercise_price":3.33,"expiration_date":"2027-10-30","underlying":"Common Stock, par value $0.01 per share","underlying_shares":87600},"source":{"system":"sec-edgar","filing":"0001209191-17-058649","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1123494/000120919117058649/doc4.xml","form_type":"4"}},{"id":4176551,"issuer":{"id":7369,"kind":"organization","name":"HARVARD BIOSCIENCE INC"},"owners":[{"id":38926,"kind":"person","name":"Eade Katherine A.","position":1,"cik":"0001721318","reported_name":"Eade Katherine A.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-11-01T21:11:40.000Z","date":"2017-11-01","kind":"grant","acquired":true,"shares":2300,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a deferred stock award of 2,300 restricted stock units which vests on December 31, 2017. This retainer award was granted in lieu and satisfaction of the annual cash retainer compensation to be earned by the director for her service on the board and a committee of the Issuer's Board of Directors. the number of shares of common stock subject to such retainer award is equal to the amount of cash that would have been received had the applicable retainer all been paid in cash, divided by the average daily closing market price of the Issuer's common stock for the month of August, rounded to the nearest 100 shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes a deferred stock award of 2,300 restricted stock units which vests on December 31, 2017."}],"balance_after":2300,"source":{"system":"sec-edgar","filing":"0001209191-17-058649","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1123494/000120919117058649/doc4.xml","form_type":"4"}}]}