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All of the other terms of the options remained unchanged."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Twenty-five percent of the shares subject to the option vests on the first anniversary of the vesting commencement date, and the remainder vests in 36 equal monthly installments thereafter for the following three years."}],"balance_after":0,"derivative":{"exercise_price":2.45,"expiration_date":"2028-09-12","underlying":"Common Stock","underlying_shares":35695},"source":{"system":"sec-edgar","filing":"0001415889-25-004763","document":"form4-02202025_120255.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000141588925004763/form4-02202025_120255.xml","form_type":"4"}},{"id":1260225,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer Christine","position":1,"cik":"0001797818","reported_name":"Zedelmayer Christine","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. Vice President and COO"}}],"security":"Employee Stock Option (right to buy)","published_at":"2025-02-20T00:44:59.000Z","date":"2025-02-14","kind":"grant","planned":false,"acquired":true,"shares":35695,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"On August 7, 2023, the Board of Directors of the Company approved the repricing of certain options based on the closing price of the Company's common stock on August 14, 2023. The repricing of these options was subject to a holding period that lapsed on February 14, 2025. The repricing resulted in the impacted options having a lower exercise price of $0.785 per share, which is the closing price of the Company's common stock on the Nasdaq Capital Market on August 14, 2023.  All of the other terms of the options remained unchanged."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Twenty-five percent of the shares subject to the option vests on the first anniversary of the vesting commencement date, and the remainder vests in 36 equal monthly installments thereafter for the following three years."}],"balance_after":35695,"derivative":{"exercise_price":0.785,"expiration_date":"2028-09-12","underlying":"Common Stock","underlying_shares":35695},"source":{"system":"sec-edgar","filing":"0001415889-25-004763","document":"form4-02202025_120255.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000141588925004763/form4-02202025_120255.xml","form_type":"4"}},{"id":1310854,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer 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Options that have different exercise prices or expiration dates are not considered to be of the same \"class.\""}],"balance_after":75000,"derivative":{"exercise_price":2.45,"exercise_date":"2020-12-10","expiration_date":"2029-12-09","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0001209191-21-065041","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000120919121065041/doc4.xml","form_type":"4"}},{"id":2507633,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer Christine","position":1,"cik":"0001797818","reported_name":"Zedelmayer Christine","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. Vice President and COO"}}],"security":"Employee Stock Option","published_at":"2021-11-17T20:27:36.000Z","date":"2021-11-16","kind":"exercise","acquired":false,"shares":8334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"In accordance with Instruction 4 to this Form, Column 9 reports only total beneficial ownership of the \"class\" of derivative security reported in Column 1. Options that have different exercise prices or expiration dates are not considered to be of the same \"class.\""}],"balance_after":41666,"derivative":{"exercise_price":2.45,"exercise_date":"2020-02-13","expiration_date":"2029-02-12","underlying":"Common Stock","underlying_shares":8334},"source":{"system":"sec-edgar","filing":"0001209191-21-065041","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000120919121065041/doc4.xml","form_type":"4"}},{"id":2507632,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer Christine","position":1,"cik":"0001797818","reported_name":"Zedelmayer Christine","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. Vice President and COO"}}],"security":"Common Stock","published_at":"2021-11-17T20:27:36.000Z","date":"2021-11-16","kind":"sale","acquired":false,"shares":7350,"price":5.485,"value":40314.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 17, 2021. The transaction was a sell-to-cover exercise, with shares sold to cover the option exercise price and taxes."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.40 to $5.59, inclusive. The reporting person undertakes to provide to Equillium, Inc., any security holder of Equillium, Inc., 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 footnote (3) to this Form 4."}],"balance_after":102409,"source":{"system":"sec-edgar","filing":"0001209191-21-065041","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000120919121065041/doc4.xml","form_type":"4"}},{"id":2507631,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer Christine","position":1,"cik":"0001797818","reported_name":"Zedelmayer Christine","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. Vice President and COO"}}],"security":"Common Stock","published_at":"2021-11-17T20:27:36.000Z","date":"2021-11-16","kind":"exercise","acquired":true,"shares":15000,"price":2.45,"value":36750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The stock option exercises reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the reporting person on September 17, 2021."}],"balance_after":109759,"source":{"system":"sec-edgar","filing":"0001209191-21-065041","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000120919121065041/doc4.xml","form_type":"4"}},{"id":2507630,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer Christine","position":1,"cik":"0001797818","reported_name":"Zedelmayer Christine","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. Vice President and COO"}}],"security":"Common Stock","published_at":"2021-11-17T20:27:36.000Z","date":"2021-11-16","kind":"sale","acquired":false,"shares":4084,"price":5.485,"value":22400.74,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 17, 2021. 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The reporting person undertakes to provide to Equillium, Inc., any security holder of Equillium, Inc., 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 footnote (3) to this Form 4."}],"balance_after":94759,"source":{"system":"sec-edgar","filing":"0001209191-21-065041","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1797818/000120919121065041/doc4.xml","form_type":"4"}},{"id":2507629,"issuer":{"id":6560,"kind":"organization","name":"Equillium, Inc."},"owners":[{"id":40958,"kind":"person","name":"Zedelmayer Christine","position":1,"cik":"0001797818","reported_name":"Zedelmayer Christine","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. Vice President and COO"}}],"security":"Common 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