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The remainder of the shares will vest in 36 equal monthly installments thereafter."}],"balance_after":32000,"derivative":{"exercise_price":19.33,"expiration_date":"2027-07-06","underlying":"Common Stock","underlying_shares":32000},"source":{"system":"sec-edgar","filing":"0001638599-17-000698","document":"doc4_4847.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1453687/000163859917000698/doc4_4847.xml","form_type":"4"}},{"id":4271019,"issuer":{"id":6015,"kind":"organization","name":"Cartesian Therapeutics, Inc."},"owners":[{"id":174482,"kind":"person","name":"Keller Peter","position":1,"cik":"0001676904","reported_name":"Keller Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Employee Stock Option (right to buy)","published_at":"2017-06-28T20:35:20.000Z","date":"2017-06-27","kind":"exercise","acquired":false,"shares":4595,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"All shares underlying this option are fully vested."}],"balance_after":89588,"derivative":{"exercise_price":0.63,"expiration_date":"2021-02-16","underlying":"Common Stock","underlying_shares":4595},"source":{"system":"sec-edgar","filing":"0001638599-17-000661","document":"doc4_4823.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1453687/000163859917000661/doc4_4823.xml","form_type":"4"}},{"id":4271018,"issuer":{"id":6015,"kind":"organization","name":"Cartesian Therapeutics, Inc."},"owners":[{"id":174482,"kind":"person","name":"Keller Peter","position":1,"cik":"0001676904","reported_name":"Keller Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Common Stock","published_at":"2017-06-28T20:35:20.000Z","date":"2017-06-27","kind":"sale","acquired":false,"shares":4595,"price":19.2995,"value":88681.2025,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  The shares were sold in multiple transactions at prices ranging from $19.20 to $19.49, inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote."}],"balance_after":405,"source":{"system":"sec-edgar","filing":"0001638599-17-000661","document":"doc4_4823.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1453687/000163859917000661/doc4_4823.xml","form_type":"4"}},{"id":4271017,"issuer":{"id":6015,"kind":"organization","name":"Cartesian Therapeutics, Inc."},"owners":[{"id":174482,"kind":"person","name":"Keller Peter","position":1,"cik":"0001676904","reported_name":"Keller Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Common Stock","published_at":"2017-06-28T20:35:20.000Z","date":"2017-06-27","kind":"exercise","acquired":true,"shares":4595,"price":0.63,"value":2894.85,"ownership":{"direct":true},"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001638599-17-000661","document":"doc4_4823.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1453687/000163859917000661/doc4_4823.xml","form_type":"4"}},{"id":4514220,"issuer":{"id":6015,"kind":"organization","name":"Cartesian Therapeutics, Inc."},"owners":[{"id":174482,"kind":"person","name":"Keller Peter","position":1,"cik":"0001676904","reported_name":"Keller Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Common Stock","published_at":"2016-12-22T00:14:22.000Z","date":"2016-12-19","kind":"sale","acquired":false,"shares":4723,"price":18.58,"value":87753.34,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"These shares are restricted common stock which are subject to a right of repurchase by the Issuer until December 31, 2016."}],"balance_after":405,"source":{"system":"sec-edgar","filing":"0001104659-16-163295","document":"a4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1453687/000110465916163295/a4.xml","form_type":"4"}}]}