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This sale is mandated by the Issuer's election under its 2013 Stock Incentive Plan to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $3.90 to $3.93 per share. 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 range set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Of the reported securities beneficially owned, 53,875 shares are represented by unvested RSUs."}],"balance_after":211821,"source":{"system":"sec-edgar","filing":"0001179110-21-000524","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911021000524/edgar.xml","form_type":"4"}},{"id":2935349,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Common Stock","published_at":"2020-12-22T18:45:51.000Z","date":"2020-12-22","kind":"sale","acquired":false,"shares":37169,"price":4.3188,"value":160525.4772,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales represent the sale of shares necessary to meet tax withholding obligations in connection with the settlement of the RSUs, and were effected pursuant to a Rule 10b5-1 trading plan adopted between the Company and the Reporting Person on September 30, 2020. The sales do not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $4.18 to $4.54 per share. 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 range set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Of the reported securities beneficially owned, 62,313 shares are represented by unvested RSUs."}],"balance_after":214561,"source":{"system":"sec-edgar","filing":"0001179110-20-012194","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020012194/edgar.xml","form_type":"4"}},{"id":2935348,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Common Stock","published_at":"2020-12-22T18:45:51.000Z","date":"2020-12-18","kind":"grant","acquired":true,"shares":128170,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"As previously disclosed in the Company's securities filings, on December 18, 2020 (the \"Grant Date\"), Reporting Person received an award of restricted stock units (\"RSUs\") in lieu of salary pursuant to a January 10, 2020 amendment to Reporting Person's employment agreement, granted consistent with Issuer's 2013 Stock Incentive Plan. Each RSU represents the right to receive one share of common stock of the Issuer. The RSUs were fully vested on the Grant Date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Of the reported securities beneficially owned, 62,313 shares are represented by unvested RSUs."}],"balance_after":251730,"source":{"system":"sec-edgar","filing":"0001179110-20-012194","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020012194/edgar.xml","form_type":"4"}},{"id":3077158,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-07-23T16:34:25.000Z","date":"2020-07-21","kind":"grant","acquired":true,"shares":92000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option award was granted under the Issuer's 2013 Stock Incentive Plan. The stock option vests and becomes exercisable over a four-year period commencing on July 21, 2020. Twenty-five percent (25%) of the stock option vests and becomes exercisable on July 21, 2021 (first anniversary of the date of grant) and the balance vests in twelve equal quarterly installments over the remaining three years of the four-year period, subject to continued service with the Issuer."}],"balance_after":92000,"derivative":{"exercise_price":2.48,"expiration_date":"2030-07-21","underlying":"Common Stock","underlying_shares":92000},"source":{"system":"sec-edgar","filing":"0001179110-20-008427","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020008427/edgar.xml","form_type":"4"}},{"id":3118365,"issuer":{"id":5041,"kind":"organization","name":"Aclaris Therapeutics, Inc."},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option Grant (right to buy)","published_at":"2020-06-08T21:24:49.000Z","date":"2020-06-04","kind":"grant","acquired":true,"shares":16500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares subject this option will vest in twelve equal monthly installments commencing July 4, 2020, subject to Reporting Person's continuous service through each such date."}],"balance_after":16500,"derivative":{"exercise_price":1.41,"expiration_date":"2030-06-03","underlying":"Common Stock","underlying_shares":16500},"source":{"system":"sec-edgar","filing":"0001209191-20-035025","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1187159/000120919120035025/doc4.xml","form_type":"4"}},{"id":3312045,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-01-14T18:19:55.000Z","date":"2020-01-10","kind":"grant","acquired":true,"shares":92000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The stock option award was granted under the Issuer's 2013 Stock Incentive Plan. The stock option vests and becomes exercisable over a four-year period commencing on January 10, 2020. Twenty-five percent (25%) of the stock option vests and becomes exercisable on January 10, 2021 (first anniversary of the date of grant) and the balance vests in twelve equal quarterly installments over the remaining three years of the four-year period, subject to continued service with the Issuer."}],"balance_after":92000,"derivative":{"exercise_price":1.79,"expiration_date":"2030-01-10","underlying":"Common Stock","underlying_shares":92000},"source":{"system":"sec-edgar","filing":"0001179110-20-000562","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020000562/edgar.xml","form_type":"4"}},{"id":3312044,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Common Stock","published_at":"2020-01-14T18:19:55.000Z","date":"2020-01-10","kind":"grant","acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a restricted stock unit (\"RSU\") award granted under the Issuer's 2013 Stock Incentive Plan. Each RSU represents a right to receive one share of Issuer common stock. The RSU award vests over a four-year period commencing on January 10, 2020. Twenty-five percent (25%) of the shares subject to the RSU award shall vest on each one-year anniversary of the grant date of the award."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Securities beneficially owned totaling 123,560 includes 61,247 shares of Issuer common stock owned and 62,313 of unvested RSU's held by the reporting person."}],"balance_after":123560,"source":{"system":"sec-edgar","filing":"0001179110-20-000562","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020000562/edgar.xml","form_type":"4"}},{"id":3311996,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Common Stock","published_at":"2020-01-14T18:05:03.000Z","date":"2020-01-07","kind":"sale","acquired":false,"shares":3006,"price":1.7804,"value":5351.8824,"ownership":{"direct":true},"footnotes":[{"field":"deemedExecutionDate","element":"deemedExecutionDate","label":"F1","text":"The Form 4 filed on January 10, 2020 did not include the Deemed Execution Date in Column 2A and corresponding footnote disclosure. This amendment to the Form 4 is being filed to include this information for the reported transaction."},{"field":"deemedExecutionDate","element":"deemedExecutionDate","label":"F2","text":"In accordance with terms of the RSU agreement, the \"sell to cover\" provision is intended to comply with the requirements of Rule 10b5-1(c)(1) under the Exchange Act and be interpreted to comply with the requirements of Rule 10b5-1(c) under the Exchange Act."},{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares of Issuer common stock required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of 8,437 Restricted Stock Units (\"RSUs\") on January 3, 2020. This sale is mandated by the Issuer's election under its 2013 Stock Incentive Plan to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $1.76 to $1.82 per share. 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 range set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Of the reported shares, 25,313 shares are represented by unvested RSUs."}],"balance_after":86560,"source":{"system":"sec-edgar","filing":"0001179110-20-000555","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020000555/edgar.xml","form_type":"4/A","original_submission_date":"2020-01-10"}},{"id":3313946,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Common Stock","published_at":"2020-01-10T08:14:21.000Z","date":"2020-01-07","kind":"sale","acquired":false,"shares":3006,"price":1.7804,"value":5351.8824,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares of Issuer common stock required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of 8,437 Restricted Stock Units (\"RSUs\") on January 3, 2020. This sale is mandated by the Issuer's election under its 2013 Stock Incentive Plan to require the satisfaction of tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $1.76 to $1.82 per share. 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 range set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Of the reported shares, 25,313 shares are represented by unvested RSUs."}],"balance_after":86560,"source":{"system":"sec-edgar","filing":"0001179110-20-000449","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911020000449/edgar.xml","form_type":"4"}},{"id":3314387,"issuer":{"id":5041,"kind":"organization","name":"Aclaris Therapeutics, Inc."},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO 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Stock","underlying_shares":22000},"source":{"system":"sec-edgar","filing":"0001209191-20-002767","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1187159/000120919120002767/doc4.xml","form_type":"4"}},{"id":3338563,"issuer":{"id":153045,"kind":"organization","name":"Spark Therapeutics, Inc.","symbol":"ONCE"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2019-12-17T21:49:17.000Z","date":"2019-12-17","kind":"disposition_to_issuer","acquired":false,"shares":37203,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Pursuant to the terms of the Merger Agreement, immediately prior to the effective time of the Merger, each outstanding Spark stock option, whether vested or unvested, was converted into the right to an amount in cash (less applicable tax withholdings) equal to the product of (a) the excess of $114.50 over the per share exercise price of such stock option and (b) the total number of shares of common stock subject to such stock option."}],"balance_after":0,"derivative":{"exercise_price":3.45,"expiration_date":"2024-08-11","underlying":"Common Stock","underlying_shares":37203},"source":{"system":"sec-edgar","filing":"0000899243-19-029444","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1187159/000089924319029444/doc4.xml","form_type":"4"}},{"id":3338562,"issuer":{"id":153045,"kind":"organization","name":"Spark Therapeutics, Inc.","symbol":"ONCE"},"owners":[{"id":391,"kind":"person","name":"MILANO 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to the effective time of the Merger, each outstanding Spark stock option, whether vested or unvested, was converted into the right to an amount in cash (less applicable tax withholdings) equal to the product of (a) the excess of $114.50 over the per share exercise price of such stock option and (b) the total number of shares of common stock subject to such stock option."}],"balance_after":0,"derivative":{"exercise_price":81.53,"expiration_date":"2028-05-29","underlying":"Common Stock","underlying_shares":4000},"source":{"system":"sec-edgar","filing":"0000899243-19-029444","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1187159/000089924319029444/doc4.xml","form_type":"4"}},{"id":3338559,"issuer":{"id":153045,"kind":"organization","name":"Spark Therapeutics, Inc.","symbol":"ONCE"},"owners":[{"id":391,"kind":"person","name":"MILANO 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(\"Spark\"), Roche Holdings, Inc. (\"Roche\") and 022019 Merger Subsidiary, Inc. (\"Merger Sub\") (the \"Merger Agreement\" and the transactions contemplated thereby, the \"Merger\"), whereby Roche caused Merger Sub to conduct a tender offer for all of the issued and outstanding shares of common stock, par value $0.001 per share, of Spark, at a price of $114.50 per share. 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Vested shares will be delivered to the reporting person on the vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"100% of the restricted stock units vest on the one-year anniversary of the grant date.  Vested shares will be delivered to the reporting person on the vesting date."}],"balance_after":1500,"derivative":{"underlying":"Common Stock","underlying_shares":1500},"source":{"system":"sec-edgar","filing":"0001609351-17-000046","document":"wf-form4_149643389367660.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1187159/000160935117000046/wf-form4_149643389367660.xml","form_type":"4"}},{"id":4295449,"issuer":{"id":153045,"kind":"organization","name":"Spark Therapeutics, Inc.","symbol":"ONCE"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2017-06-02T20:05:11.000Z","date":"2017-05-31","kind":"grant","acquired":true,"shares":4000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"100% of the shares vest on the one-year anniversary of the grant date."}],"balance_after":4000,"derivative":{"exercise_price":50.93,"expiration_date":"2027-05-30","underlying":"Common Stock","underlying_shares":4000},"source":{"system":"sec-edgar","filing":"0001609351-17-000046","document":"wf-form4_149643389367660.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1187159/000160935117000046/wf-form4_149643389367660.xml","form_type":"4"}},{"id":4496987,"issuer":{"id":110652,"kind":"organization","name":"Aceragen, Inc.","symbol":"ACGN"},"owners":[{"id":391,"kind":"person","name":"MILANO VINCENT","position":1,"cik":"0001187159","reported_name":"MILANO VINCENT","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Stock Option","published_at":"2017-01-06T16:23:19.000Z","date":"2017-01-03","kind":"grant","acquired":true,"shares":300000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option was granted under the Company's 2013 Stock Incentive Plan.  The options vest with respect to 25% of the underlying shares on the first anniversary of the date of grant and the balance of the underlying shares vest in twelve equal quarterly installments following the first anniversary of the date of grant."}],"balance_after":300000,"derivative":{"exercise_price":1.59,"expiration_date":"2027-01-03","underlying":"Common Stock","underlying_shares":300000},"source":{"system":"sec-edgar","filing":"0001179110-17-000643","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/861838/000117911017000643/edgar.xml","form_type":"4"}}]}