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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":313680,"source":{"system":"sec-edgar","filing":"0001193125-26-299749","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000119312526299749/ownership.xml","form_type":"4"}},{"id":767841,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PFO & PAO"}}],"security":"Common Stock","published_at":"2026-05-21T20:05:21.000Z","date":"2026-05-19","kind":"grant","planned":false,"acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The restricted stock unit award vests as to 50% of the shares of Class A Common Stock on each approximate anniversary of the grant thereof."}],"balance_after":441570,"source":{"system":"sec-edgar","filing":"0001193125-26-234397","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000119312526234397/ownership.xml","form_type":"4"}},{"id":845942,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Principal Accounting Officer"}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:05:05.000Z","date":"2026-03-10","kind":"grant","planned":false,"acquired":true,"shares":163934,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The restricted stock unit award, granted as an annual performance award, vests as to 25% of the shares of Class A Common Stock on each approximate anniversary of the grant thereof."}],"balance_after":416570,"source":{"system":"sec-edgar","filing":"0001193125-26-104110","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000119312526104110/ownership.xml","form_type":"4"}},{"id":881806,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Principal Accounting Officer"}}],"security":"Class A Common Stock","published_at":"2026-02-25T21:05:04.000Z","date":"2026-02-24","kind":"sale","planned":false,"acquired":false,"shares":12621,"price":3.66,"value":46192.86,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 represents shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the 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":"F3","text":"The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.60 to $3.73, 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":252636,"source":{"system":"sec-edgar","filing":"0001193125-26-071495","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000119312526071495/ownership.xml","form_type":"4"}},{"id":881805,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Principal Accounting Officer"}}],"security":"Class A Common Stock","published_at":"2026-02-25T21:05:04.000Z","date":"2026-02-23","kind":"sale","planned":false,"acquired":false,"shares":11552,"price":3.81,"value":44013.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 represents shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the 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 price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.70 to $4.05, inclusive. 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The sale occurred automatically to satisfy the tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary trade by the Reporting Person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person acquired 2,037 shares of Class A Common Stock under the issuer's employee stock purchase plan on June 30, 2023."}],"balance_after":134172,"source":{"system":"sec-edgar","filing":"0001209191-23-046018","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000120919123046018/doc4.xml","form_type":"4"}},{"id":1958632,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Principal Accounting Officer"}}],"security":"Class A Common Stock","published_at":"2023-03-10T22:15:29.000Z","date":"2023-03-08","kind":"grant","acquired":true,"shares":35620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The restricted stock unit award, granted as an annual performance award, vests as to 25% of the shares of Class A Common Stock on each approximate anniversary of the grant thereof."}],"balance_after":134111,"source":{"system":"sec-edgar","filing":"0001209191-23-017892","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000120919123017892/doc4.xml","form_type":"4"}},{"id":1983493,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Principal Accounting Officer"}}],"security":"Class A Common Stock","published_at":"2023-03-01T23:25:30.000Z","date":"2023-02-28","kind":"sale","acquired":false,"shares":3049,"price":11.31,"value":34484.19,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. 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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":98491,"source":{"system":"sec-edgar","filing":"0001209191-23-014286","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1446847/000120919123014286/doc4.xml","form_type":"4"}},{"id":1983492,"issuer":{"id":5213,"kind":"organization","name":"IRONWOOD PHARMACEUTICALS INC","symbol":"IRWD"},"owners":[{"id":31202,"kind":"person","name":"Silver Ronald","position":1,"cik":"0001873731","reported_name":"Silver Ronald","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Principal Accounting Officer"}}],"security":"Class A Common Stock","published_at":"2023-03-01T23:25:30.000Z","date":"2023-02-27","kind":"sale","acquired":false,"shares":2929,"price":11.41,"value":33419.89,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the 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 price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.29 to $11.53, inclusive. 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