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These shares were purchased in multiple transactions at prices ranging from $0.29 to $0.34, inclusive. The reporting person hereby undertakes to provide to Biostage, Inc., any security holder of Biostage, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4."}],"balance_after":193998,"source":{"system":"sec-edgar","filing":"0001144204-17-044867","document":"v473946_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1641900/000114420417044867/v473946_form4.xml","form_type":"4"}},{"id":4382495,"issuer":{"id":7501,"kind":"organization","name":"Harvard Apparatus Regenerative Technology, Inc.","symbol":"HRGN"},"owners":[{"id":173598,"kind":"person","name":"LaFrancesca Saverio","position":1,"cik":"0001641900","reported_name":"LaFrancesca Saverio","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2017-03-16T16:17:26.000Z","date":"2017-03-14","kind":"grant","acquired":true,"shares":107250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Restricted stock units granted by the Issuer pursuant to its 2013 Equity Incentive Plan and qualified under Rule 16b-3(d).  Each restricted stock unit represents a contingent right to receive one share of Common Stock of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest and settle in four equal installments on March 14, 2018, 2019, 2020 and 2021."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest and settle in four equal installments on March 14, 2018, 2019, 2020 and 2021."}],"balance_after":107250,"derivative":{"underlying":"Common Stock, par value $0.01 per share","underlying_shares":107250},"source":{"system":"sec-edgar","filing":"0001144204-17-015097","document":"v461956_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1641900/000114420417015097/v461956_4.xml","form_type":"4"}},{"id":4382494,"issuer":{"id":7501,"kind":"organization","name":"Harvard Apparatus Regenerative Technology, Inc.","symbol":"HRGN"},"owners":[{"id":173598,"kind":"person","name":"LaFrancesca Saverio","position":1,"cik":"0001641900","reported_name":"LaFrancesca Saverio","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Stock Option (right to buy)","published_at":"2017-03-16T16:17:26.000Z","date":"2017-03-14","kind":"grant","acquired":true,"shares":217750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option shares vest in four equal installments on March 14, 2018, 2019, 2020 and 2021."}],"balance_after":217750,"derivative":{"exercise_price":0.38,"expiration_date":"2027-03-14","underlying":"Common Stock, par value $0.01 per share","underlying_shares":217750},"source":{"system":"sec-edgar","filing":"0001144204-17-015097","document":"v461956_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1641900/000114420417015097/v461956_4.xml","form_type":"4"}}]}