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(\"Issuer\"), or of equity awards in respect of such Common Stock, as applicable, in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of March 12, 2023 (the \"Merger Agreement\"), by and among the Issuer, Pfizer Inc. (\"Parent\") and Aris Merger Sub, Inc. (\"Merger Sub\"), a wholly owned subsidiary of Parent, pursuant to which, at 12:01 a.m. EST on December 14, 2023, the effective time of the Merger (the \"Effective Time\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent (the \"Merger\")."},{"field":"shares","element":"transactionShares","label":"F1","text":"Reflects the disposition of shares of common stock, par value $0.001 per share (\"Common Stock\"), of Seagen Inc. (\"Issuer\"), or of equity awards in respect of such Common Stock, as applicable, in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of March 12, 2023 (the \"Merger Agreement\"), by and among the Issuer, Pfizer Inc. (\"Parent\") and Aris Merger Sub, Inc. (\"Merger Sub\"), a wholly owned subsidiary of Parent, pursuant to which, at 12:01 a.m. EST on December 14, 2023, the effective time of the Merger (the \"Effective Time\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Reflects the disposition of shares of common stock, par value $0.001 per share (\"Common Stock\"), of Seagen Inc. (\"Issuer\"), or of equity awards in respect of such Common Stock, as applicable, in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of March 12, 2023 (the \"Merger Agreement\"), by and among the Issuer, Pfizer Inc. (\"Parent\") and Aris Merger Sub, Inc. (\"Merger Sub\"), a wholly owned subsidiary of Parent, pursuant to which, at 12:01 a.m. EST on December 14, 2023, the effective time of the Merger (the \"Effective Time\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Pursuant to the Merger Agreement, at the Effective Time, each issued and outstanding share of Common Stock (other than certain excluded shares described in the Merger Agreement) was cancelled and converted automatically into the right to receive cash in an amount equal to $229.00 per share of Common Stock (the \"Merger Consideration\")."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-070874","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000095017023070874/ownership.xml","form_type":"4"}},{"id":1709896,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-12-15T18:31:12.000Z","date":"2023-12-14","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":4750,"price":229,"value":1087750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reflects the disposition of shares of common stock, par value $0.001 per share (\"Common Stock\"), of Seagen Inc. (\"Issuer\"), or of equity awards in respect of such Common Stock, as applicable, in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of March 12, 2023 (the \"Merger Agreement\"), by and among the Issuer, Pfizer Inc. (\"Parent\") and Aris Merger Sub, Inc. (\"Merger Sub\"), a wholly owned subsidiary of Parent, pursuant to which, at 12:01 a.m. EST on December 14, 2023, the effective time of the Merger (the \"Effective Time\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent (the \"Merger\")."},{"field":"shares","element":"transactionShares","label":"F1","text":"Reflects the disposition of shares of common stock, par value $0.001 per share (\"Common Stock\"), of Seagen Inc. (\"Issuer\"), or of equity awards in respect of such Common Stock, as applicable, in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of March 12, 2023 (the \"Merger Agreement\"), by and among the Issuer, Pfizer Inc. (\"Parent\") and Aris Merger Sub, Inc. (\"Merger Sub\"), a wholly owned subsidiary of Parent, pursuant to which, at 12:01 a.m. EST on December 14, 2023, the effective time of the Merger (the \"Effective Time\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Reflects the disposition of shares of common stock, par value $0.001 per share (\"Common Stock\"), of Seagen Inc. (\"Issuer\"), or of equity awards in respect of such Common Stock, as applicable, in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of March 12, 2023 (the \"Merger Agreement\"), by and among the Issuer, Pfizer Inc. (\"Parent\") and Aris Merger Sub, Inc. (\"Merger Sub\"), a wholly owned subsidiary of Parent, pursuant to which, at 12:01 a.m. EST on December 14, 2023, the effective time of the Merger (the \"Effective Time\"), Merger Sub merged with and into the Issuer, with the Issuer surviving as a subsidiary of Parent (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Pursuant to the Merger Agreement, at the Effective Time, each issued and outstanding share of Common Stock (other than certain excluded shares described in the Merger Agreement) was cancelled and converted automatically into the right to receive cash in an amount equal to $229.00 per share of Common Stock (the \"Merger Consideration\")."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-070874","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000095017023070874/ownership.xml","form_type":"4"}},{"id":1794465,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (right to buy)","published_at":"2023-08-29T18:22:59.000Z","date":"2023-08-28","kind":"exercise","planned":false,"acquired":false,"shares":1812,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Options vested in full on 5/13/23."}],"balance_after":0,"derivative":{"exercise_price":135.63,"exercise_date":"2023-05-13","expiration_date":"2032-05-13","underlying":"Common Stock","underlying_shares":1812},"source":{"system":"sec-edgar","filing":"0001203311-23-000087","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000120331123000087/edgardoc.xml","form_type":"4"}},{"id":1794464,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-08-29T18:22:59.000Z","date":"2023-08-28","kind":"sale","planned":false,"acquired":false,"shares":1610,"price":209.08,"value":336618.8,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $208.92 to $209.25. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":10725,"source":{"system":"sec-edgar","filing":"0001203311-23-000087","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000120331123000087/edgardoc.xml","form_type":"4"}},{"id":1794463,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-08-29T18:22:59.000Z","date":"2023-08-28","kind":"sale","planned":false,"acquired":false,"shares":1812,"price":209.01,"value":378726.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $208.92 to $209.21. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6794,"source":{"system":"sec-edgar","filing":"0001203311-23-000087","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000120331123000087/edgardoc.xml","form_type":"4"}},{"id":1794462,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-08-29T18:22:59.000Z","date":"2023-08-28","kind":"sale","planned":false,"acquired":false,"shares":1503,"price":209.16,"value":314367.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $209.06 to $209.25. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":8606,"source":{"system":"sec-edgar","filing":"0001203311-23-000087","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000120331123000087/edgardoc.xml","form_type":"4"}},{"id":1794461,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-08-29T18:22:59.000Z","date":"2023-08-28","kind":"exercise","planned":false,"acquired":true,"shares":1812,"price":135.63,"value":245761.56,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":10109,"source":{"system":"sec-edgar","filing":"0001203311-23-000087","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000120331123000087/edgardoc.xml","form_type":"4"}},{"id":1814780,"issuer":{"id":1222,"kind":"organization","name":"Structure Therapeutics Inc.","symbol":"GPCR"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock option (right to buy)","published_at":"2023-08-04T21:37:44.000Z","date":"2023-08-03","kind":"other","planned":false,"acquired":true,"shares":205500,"price":7.97,"value":1637835.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The reported transactions involve the Reporting Person's transfer of the vested portion of his option to trusts established for the benefit of his\nchildren.  The transfer was a substitution for minority interests in a family limited partnership of equivalent value previously gifted to the trusts.  The price per share is 1/3 of the closing price of the Issuer's American Depositary Shares (\"ADS\") on the date of transfer less the exercise price per share of the option.  Each ADS consist of three of the Issuer's ordinary shares."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported transactions involve the Reporting Person's transfer of the vested portion of his option to trusts established for the benefit of his\nchildren.  The transfer was a substitution for minority interests in a family limited partnership of equivalent value previously gifted to the trusts.  The price per share is 1/3 of the closing price of the Issuer's American Depositary Shares (\"ADS\") on the date of transfer less the exercise price per share of the option.  Each ADS consist of three of the Issuer's ordinary shares."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"1/3rd of the shares vested one year after January 5, 2022 (the \"Vesting Commencement Date\"); the balance of the shares vest in a series of 24 successive equal monthly installments measured from the first anniversary of the Vesting Commencement Date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The option is held by the Michael D. Welch 2020 Irrevocable GST Trust, dated July 1, 2020.  The Reporting Person is trustee of such trust and his son and such son's descendants are the sole beneficiaries of such trust."}],"balance_after":205500,"derivative":{"exercise_price":2.6,"expiration_date":"2032-01-19","underlying":"Ordinary Shares","underlying_shares":205500},"source":{"system":"sec-edgar","filing":"0001209191-23-044645","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1206199/000120919123044645/doc4.xml","form_type":"4"}},{"id":1814779,"issuer":{"id":1222,"kind":"organization","name":"Structure Therapeutics Inc.","symbol":"GPCR"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock option (right to buy)","published_at":"2023-08-04T21:37:44.000Z","date":"2023-08-03","kind":"other","planned":false,"acquired":true,"shares":205500,"price":7.97,"value":1637835.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The reported transactions involve the Reporting Person's transfer of the vested portion of his option to trusts established for the benefit of his\nchildren.  The transfer was a substitution for minority interests in a family limited partnership of equivalent value previously gifted to the trusts.  The price per share is 1/3 of the closing price of the Issuer's American Depositary Shares (\"ADS\") on the date of transfer less the exercise price per share of the option.  Each ADS consist of three of the Issuer's ordinary shares."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported transactions involve the Reporting Person's transfer of the vested portion of his option to trusts established for the benefit of his\nchildren.  The transfer was a substitution for minority interests in a family limited partnership of equivalent value previously gifted to the trusts.  The price per share is 1/3 of the closing price of the Issuer's American Depositary Shares (\"ADS\") on the date of transfer less the exercise price per share of the option.  Each ADS consist of three of the Issuer's ordinary shares."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"1/3rd of the shares vested one year after January 5, 2022 (the \"Vesting Commencement Date\"); the balance of the shares vest in a series of 24 successive equal monthly installments measured from the first anniversary of the Vesting Commencement Date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The option is held by the Andrew J. Welch 2020 Irrevocable GST Trust, dated July 1, 2020. The Reporting Person is trustee of such trust and his son is the sole beneficiary of such trust."}],"balance_after":205500,"derivative":{"exercise_price":2.6,"expiration_date":"2032-01-19","underlying":"Ordinary Shares","underlying_shares":205500},"source":{"system":"sec-edgar","filing":"0001209191-23-044645","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1206199/000120919123044645/doc4.xml","form_type":"4"}},{"id":1814778,"issuer":{"id":1222,"kind":"organization","name":"Structure Therapeutics Inc.","symbol":"GPCR"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock option (right to buy)","published_at":"2023-08-04T21:37:44.000Z","date":"2023-08-03","kind":"other","planned":false,"acquired":false,"shares":411000,"price":7.97,"value":3275670.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The reported transactions involve the Reporting Person's transfer of the vested portion of his option to trusts established for the benefit of his\nchildren.  The transfer was a substitution for minority interests in a family limited partnership of equivalent value previously gifted to the trusts.  The price per share is 1/3 of the closing price of the Issuer's American Depositary Shares (\"ADS\") on the date of transfer less the exercise price per share of the option.  Each ADS consist of three of the Issuer's ordinary shares."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported transactions involve the Reporting Person's transfer of the vested portion of his option to trusts established for the benefit of his\nchildren.  The transfer was a substitution for minority interests in a family limited partnership of equivalent value previously gifted to the trusts.  The price per share is 1/3 of the closing price of the Issuer's American Depositary Shares (\"ADS\") on the date of transfer less the exercise price per share of the option.  Each ADS consist of three of the Issuer's ordinary shares."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"1/3rd of the shares vested one year after January 5, 2022 (the \"Vesting Commencement Date\"); the balance of the shares vest in a series of 24 successive equal monthly installments measured from the first anniversary of the Vesting Commencement Date."}],"balance_after":768122,"derivative":{"exercise_price":2.6,"expiration_date":"2032-01-19","underlying":"Ordinary Shares","underlying_shares":411000},"source":{"system":"sec-edgar","filing":"0001209191-23-044645","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1206199/000120919123044645/doc4.xml","form_type":"4"}},{"id":1860300,"issuer":{"id":4337,"kind":"organization","name":"Ultragenyx Pharmaceutical Inc.","symbol":"RARE"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2023-06-09T18:28:40.000Z","date":"2023-06-07","kind":"grant","planned":false,"acquired":true,"shares":7110,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option shall vest in full on the earlier of (i) the Company's next Annual Meeting of Stockholders or (ii) June 7, 2024."}],"balance_after":7110,"derivative":{"exercise_price":51.82,"expiration_date":"2033-06-07","underlying":"Common Stock","underlying_shares":7110},"source":{"system":"sec-edgar","filing":"0001209191-23-035686","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1206199/000120919123035686/doc4.xml","form_type":"4"}},{"id":1860299,"issuer":{"id":4337,"kind":"organization","name":"Ultragenyx Pharmaceutical Inc.","symbol":"RARE"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-06-09T18:28:40.000Z","date":"2023-06-07","kind":"grant","planned":false,"acquired":true,"shares":3860,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Award of Restricted Stock Units (\"RSUs\") under the Company's 2014 Incentive Plan. 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The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."}],"balance_after":6253,"source":{"system":"sec-edgar","filing":"0001203311-23-000046","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000120331123000046/edgardoc.xml","form_type":"4"}},{"id":1892102,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common 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The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."}],"balance_after":12335,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906721,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-02","kind":"sale","planned":true,"acquired":false,"shares":351,"price":200.07,"value":70224.57,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.04 to $200.16 The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6253,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906720,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-02","kind":"sale","planned":true,"acquired":false,"shares":3462,"price":200.1,"value":692746.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.05 to $200.16. 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The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6604,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906717,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-02","kind":"exercise","planned":true,"acquired":true,"shares":3171,"price":160.33,"value":508406.43,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":9775,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906716,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-02","kind":"sale","planned":true,"acquired":false,"shares":1888,"price":200.05,"value":377694.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.04 to $200.05. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6604,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906715,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-02","kind":"exercise","planned":true,"acquired":true,"shares":1888,"price":64.38,"value":121549.44,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":8492,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906714,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-01","kind":"sale","planned":true,"acquired":false,"shares":4890,"price":200.06,"value":978293.4,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.02 to $200.43. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."}],"balance_after":18170,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906713,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-01","kind":"sale","planned":true,"acquired":false,"shares":295,"price":200.06,"value":59017.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.02 to $200.41. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6604,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906712,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-01","kind":"sale","planned":true,"acquired":false,"shares":1990,"price":200.12,"value":398238.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.03 to $200.41. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6899,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906711,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-01","kind":"exercise","planned":true,"acquired":true,"shares":1990,"price":56.77,"value":112972.3,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":8889,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906710,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-03T21:16:11.000Z","date":"2023-05-01","kind":"sale","planned":true,"acquired":false,"shares":5150,"price":200.04,"value":1030206.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Sales reported in this Form 4 were effected pursuant to written plans, entered into on September 7, 2022, that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c)."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.02 to $200.06. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6899,"source":{"system":"sec-edgar","filing":"0000899243-23-012178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323012178/doc4.xml","form_type":"4"}},{"id":1906709,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL 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The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."}],"balance_after":12335,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925611,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":3317,"price":201.51,"value":668408.67,"ownership":{"direct":false,"nature":"By Trust"},"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."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $201.10 to $202.05. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."}],"balance_after":16619,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925610,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":3124,"price":200.45,"value":626205.8,"ownership":{"direct":false,"nature":"By Trust"},"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."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.10 to $201.07. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."}],"balance_after":19936,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925609,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":1082,"price":202.54,"value":219148.28,"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."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $202.11 to $203.05. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":4149,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925608,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":851,"price":201.51,"value":171485.01,"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."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $201.10 to $202.05. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":5231,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925607,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":817,"price":200.45,"value":163767.65,"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."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $200.10 to $201.07. 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The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6082,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925606,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":112,"price":203.05,"value":22741.6,"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":6899,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925605,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"exercise","planned":false,"acquired":true,"shares":112,"price":56.77,"value":6358.24,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting."}],"balance_after":7011,"source":{"system":"sec-edgar","filing":"0000899243-23-010823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1060736/000089924323010823/doc4.xml","form_type":"4"}},{"id":1925604,"issuer":{"id":13956,"kind":"organization","name":"Seagen Inc.","symbol":"SGEN"},"owners":[{"id":36750,"kind":"person","name":"WELCH DANIEL G","position":1,"cik":"0001206199","reported_name":"WELCH DANIEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-05T21:07:45.000Z","date":"2023-04-03","kind":"sale","planned":false,"acquired":false,"shares":7158,"price":202.51,"value":1449566.58,"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."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Reflects sales of common stock executed in multiple transactions at prices ranging from $201.92 to $202.91. 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