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The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to 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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The reporting person is a trustee of the Forsyth Family Trust Dated July 20, 2001 and, in such capacity, may be deemed to indirectly beneficially own the securities owned by the Forsyth Family Trust Dated July 20, 2001."}],"balance_after":227064,"source":{"system":"sec-edgar","filing":"0001240801-26-000004","document":"wk-form4_1788899160.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2007919/000124080126000004/wk-form4_1788899160.xml","form_type":"4"}},{"id":749402,"issuer":{"id":4576,"kind":"organization","name":"Inhibrx Biosciences, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-04T21:28:55.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This stock option will be fully exercisable on June 3, 2027, subject to the reporting person's continued service through such date."}],"balance_after":15000,"derivative":{"exercise_price":95.22,"exercise_date":"2027-06-03","expiration_date":"2036-06-03","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0001240801-26-000002","document":"wk-form4_1780608533.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000124080126000002/wk-form4_1780608533.xml","form_type":"4"}},{"id":1130388,"issuer":{"id":4576,"kind":"organization","name":"Inhibrx Biosciences, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-05-29T20:24:59.000Z","date":"2025-05-28","kind":"grant","planned":false,"acquired":true,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This stock option will be fully exercisable on May 28, 2026, subject to the reporting person's continued service through such date."}],"balance_after":15000,"derivative":{"exercise_price":12.91,"exercise_date":"2026-05-28","expiration_date":"2035-05-28","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0002007919-25-000066","document":"wk-form4_1748550291.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000200791925000066/wk-form4_1748550291.xml","form_type":"4"}},{"id":1423144,"issuer":{"id":4576,"kind":"organization","name":"Inhibrx Biosciences, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-08-26T20:26:53.000Z","date":"2024-08-23","kind":"purchase","planned":false,"acquired":true,"shares":59812,"price":14.07,"value":841554.84,"ownership":{"direct":false,"nature":"By the Forsyth Family Trust Dated July 20, 2001"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The shares were purchased in multiple transactions at prices ranging from $13.48 to $14.25, inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to 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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The reporting person is a trustee of the Forsyth Family Trust Dated July 20, 2001 and, in such capacity, may be deemed to indirectly beneficially own the securities owned by the Forsyth Family Trust Dated July 20, 2001."}],"balance_after":224564,"source":{"system":"sec-edgar","filing":"0002007919-24-000040","document":"wk-form4_1724704006.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000200791924000040/wk-form4_1724704006.xml","form_type":"4"}},{"id":1423143,"issuer":{"id":4576,"kind":"organization","name":"Inhibrx Biosciences, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-08-26T20:26:53.000Z","date":"2024-08-22","kind":"purchase","planned":false,"acquired":true,"shares":15188,"price":12.89,"value":195773.32,"ownership":{"direct":false,"nature":"By the Forsyth Family Trust Dated July 20, 2001"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares were purchased in multiple transactions at prices ranging from $12.80 to $13.00, inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to 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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The reporting person is a trustee of the Forsyth Family Trust Dated July 20, 2001 and, in such capacity, may be deemed to indirectly beneficially own the securities owned by the Forsyth Family Trust Dated July 20, 2001."}],"balance_after":164752,"source":{"system":"sec-edgar","filing":"0002007919-24-000040","document":"wk-form4_1724704006.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000200791924000040/wk-form4_1724704006.xml","form_type":"4"}},{"id":1497661,"issuer":{"id":90351,"kind":"organization","name":"Inhibrx, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-05-30T22:22:18.000Z","date":"2024-05-30","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":15000,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Under the Agreement and Plan of Merger, dated January 22, 2024 (the \"Merger Agreement\"), by and among the Inhibrx, Inc. (the \"Issuer\"), Aventis Inc., a Pennsylvania corporation (\"Parent\") and wholly owned subsidiary of Sanofi, and Art Acquisition Sub, Inc., a Delaware corporation (\"Merger Sub\") and wholly owned subsidiary of Parent, following satisfaction or waiver of the closing conditions set forth in the Merger Agreement, on May 30, 2024, Merger Sub merged with and into the Issuer with the Issuer surviving as the surviving company (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This stock option was cancelled in the Merger and converted into the right to receive (A) an amount in cash, without interest and less any applicable withholding taxes, equal to the product of (x) the total number of shares of the Issuer's common stock subject to such stock option immediately prior to the Effective Time, multiplied by (y) the excess of (I) the Closing Amount over (II) the exercise price payable per share of the Issuer common stock under such option and (B) one (1) CVR for each share of the Issuer common stock subject to such stock option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"Twenty-five percent (25%) of the total shares subject to the stock option became exercisable on June 7, 2022, with the balance to vest and become exercisable in equal successive monthly installments for thirty-six (36) months thereafter."}],"balance_after":0,"derivative":{"exercise_price":24.78,"expiration_date":"2031-06-07","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0000950142-24-001498","document":"es240484807_4-forsyth.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001498/es240484807_4-forsyth.xml","form_type":"4"}},{"id":1497660,"issuer":{"id":90351,"kind":"organization","name":"Inhibrx, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-05-30T22:22:18.000Z","date":"2024-05-30","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":15000,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Under the Agreement and Plan of Merger, dated January 22, 2024 (the \"Merger Agreement\"), by and among the Inhibrx, Inc. (the \"Issuer\"), Aventis Inc., a Pennsylvania corporation (\"Parent\") and wholly owned subsidiary of Sanofi, and Art Acquisition Sub, Inc., a Delaware corporation (\"Merger Sub\") and wholly owned subsidiary of Parent, following satisfaction or waiver of the closing conditions set forth in the Merger Agreement, on May 30, 2024, Merger Sub merged with and into the Issuer with the Issuer surviving as the surviving company (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This stock option was cancelled in the Merger and converted into the right to receive (A) an amount in cash, without interest and less any applicable withholding taxes, equal to the product of (x) the total number of shares of the Issuer's common stock subject to such stock option immediately prior to the Effective Time, multiplied by (y) the excess of (I) the Closing Amount over (II) the exercise price payable per share of the Issuer common stock under such option and (B) one (1) CVR for each share of the Issuer common stock subject to such stock option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"Twenty-five percent (25%) of the total shares subject to the stock option became exercisable on May 25, 2023, with the balance to vest and become exercisable in equal successive monthly installments for thirty-six (36) months thereafter."}],"balance_after":0,"derivative":{"exercise_price":12.57,"expiration_date":"2032-05-25","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0000950142-24-001498","document":"es240484807_4-forsyth.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001498/es240484807_4-forsyth.xml","form_type":"4"}},{"id":1497659,"issuer":{"id":90351,"kind":"organization","name":"Inhibrx, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-05-30T22:22:18.000Z","date":"2024-05-30","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":15000,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Under the Agreement and Plan of Merger, dated January 22, 2024 (the \"Merger Agreement\"), by and among the Inhibrx, Inc. (the \"Issuer\"), Aventis Inc., a Pennsylvania corporation (\"Parent\") and wholly owned subsidiary of Sanofi, and Art Acquisition Sub, Inc., a Delaware corporation (\"Merger Sub\") and wholly owned subsidiary of Parent, following satisfaction or waiver of the closing conditions set forth in the Merger Agreement, on May 30, 2024, Merger Sub merged with and into the Issuer with the Issuer surviving as the surviving company (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This stock option was cancelled in the Merger and converted into the right to receive (A) an amount in cash, without interest and less any applicable withholding taxes, equal to the product of (x) the total number of shares of the Issuer's common stock subject to such stock option immediately prior to the Effective Time, multiplied by (y) the excess of (I) the Closing Amount over (II) the exercise price payable per share of the Issuer common stock under such option and (B) one (1) CVR for each share of the Issuer common stock subject to such stock option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Twenty-five percent (25%) of the total shares subject to the stock option became exercisable on May 25, 2024, with the balance to vest and become exercisable in equal successive monthly installments for thirty-six (36) months thereafter."}],"balance_after":0,"derivative":{"exercise_price":23.03,"expiration_date":"2033-05-25","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0000950142-24-001498","document":"es240484807_4-forsyth.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001498/es240484807_4-forsyth.xml","form_type":"4"}},{"id":1497658,"issuer":{"id":90351,"kind":"organization","name":"Inhibrx, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-05-30T22:22:18.000Z","date":"2024-05-30","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":17259,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Under the Agreement and Plan of Merger, dated January 22, 2024 (the \"Merger Agreement\"), by and among the Inhibrx, Inc. (the \"Issuer\"), Aventis Inc., a Pennsylvania corporation (\"Parent\") and wholly owned subsidiary of Sanofi, and Art Acquisition Sub, Inc., a Delaware corporation (\"Merger Sub\") and wholly owned subsidiary of Parent, following satisfaction or waiver of the closing conditions set forth in the Merger Agreement, on May 30, 2024, Merger Sub merged with and into the Issuer with the Issuer surviving as the surviving company (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This stock option was cancelled in the Merger and converted into the right to receive (A) an amount in cash, without interest and less any applicable withholding taxes, equal to the product of (x) the total number of shares of the Issuer's common stock subject to such stock option immediately prior to the Effective Time, multiplied by (y) the excess of (I) the Closing Amount over (II) the exercise price payable per share of the Issuer common stock under such option and (B) one (1) CVR for each share of the Issuer common stock subject to such stock option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Twenty-five percent (25%) of the total shares subject to the stock option became exercisable on November 26, 2019, with the balance having vested and have become exercisable in equal successive monthly installments for thirty-six (36) months thereafter"}],"balance_after":0,"derivative":{"exercise_price":10.52,"expiration_date":"2028-11-26","underlying":"Common Stock","underlying_shares":17259},"source":{"system":"sec-edgar","filing":"0000950142-24-001498","document":"es240484807_4-forsyth.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001498/es240484807_4-forsyth.xml","form_type":"4"}},{"id":1497657,"issuer":{"id":90351,"kind":"organization","name":"Inhibrx, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-05-30T22:22:18.000Z","date":"2024-05-30","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":598257,"price":30,"value":17947710.0,"ownership":{"direct":false,"nature":"By the Forsyth Family Trust Dated July 20, 2001"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Under the Agreement and Plan of Merger, dated January 22, 2024 (the \"Merger Agreement\"), by and among the Inhibrx, Inc. (the \"Issuer\"), Aventis Inc., a Pennsylvania corporation (\"Parent\") and wholly owned subsidiary of Sanofi, and Art Acquisition Sub, Inc., a Delaware corporation (\"Merger Sub\") and wholly owned subsidiary of Parent, following satisfaction or waiver of the closing conditions set forth in the Merger Agreement, on May 30, 2024, Merger Sub merged with and into the Issuer with the Issuer surviving as the surviving company (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"In the Merger, each share of common stock of the Issuer that was outstanding immediately prior to the effective time of the Merger (the \"Effective Time\") (other than (A) the Issuer's common stock owned by the Issuer as treasury shares, (B) the Issuer's common stock owned by Parent or Merger Sub and (C) any dissenting shares), was automatically cancelled, extinguished and converted into the right to receive (i) an amount in cash equal to $30.00, without interest thereon (the \"Closing Amount\"), plus (ii) one (1) contractual contingent value right (\"CVR\") representing the right to receive a contingent payment of $5.00, without interest thereon, in cash (the \"Milestone Payment\"), upon the achievement of certain regulatory milestones (\"Milestone\") set forth in the Contingent Value Rights Agreement between Parent and Continental Stock Transfer & Trust Company."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The reporting person is a trustee of the Forsyth Family Trust Dated July 20, 2001 and, in such capacity, may be deemed to indirectly beneficially own the securities owned by the Forsyth Family Trust Dated July 20, 2001."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950142-24-001498","document":"es240484807_4-forsyth.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001498/es240484807_4-forsyth.xml","form_type":"4"}},{"id":1497656,"issuer":{"id":4576,"kind":"organization","name":"Inhibrx Biosciences, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-05-30T22:10:12.000Z","date":"2024-05-30","kind":"grant","planned":false,"acquired":true,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F3","text":"This stock option was granted following the consummation of the merger of Inhibrx, Inc. with a wholly owned indirect subsidiary of Sanofi."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This stock option will be fully exercisable on May 30, 2025, subject to the reporting person's continued service through such date."}],"balance_after":30000,"derivative":{"exercise_price":15.86,"expiration_date":"2034-05-30","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0000950142-24-001491","document":"es240484861_4-forsyth.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001491/es240484861_4-forsyth.xml","form_type":"4"}},{"id":1497655,"issuer":{"id":4576,"kind":"organization","name":"Inhibrx Biosciences, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH DOUGLAS","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-05-30T22:10:12.000Z","date":"2024-05-29","kind":"grant","planned":false,"acquired":true,"shares":149564,"ownership":{"direct":false,"nature":"By the Forsyth Family Trust Dated July 20, 2001"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The transactions reported herein are the result of the consummation on May 29, 2024 of the distribution by Inhibrx, Inc. of 92% of the issued and outstanding shares of common stock of its subsidiary, Inhibrx Biosciences, Inc. (the \"Issuer\"), to holders of shares of Inhibrx, Inc.'s common stock as of the distribution record date of May 17, 2024, on a pro rata basis, at a ratio of one share of the Company's common stock for every four shares of Inhibrx, Inc.'s issued and outstanding common stock held on the distribution record date. These transactions are voluntarily reported notwithstanding the exemption provided by Rule 16a-9."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The reporting person is a trustee of the Forsyth Family Trust Dated July 20, 2001 and, in such capacity, may be deemed to indirectly beneficially own the securities owned by the Forsyth Family Trust Dated July 20, 2001."}],"balance_after":149564,"source":{"system":"sec-edgar","filing":"0000950142-24-001491","document":"es240484861_4-forsyth.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1240801/000095014224001491/es240484861_4-forsyth.xml","form_type":"4"}},{"id":1874515,"issuer":{"id":90351,"kind":"organization","name":"Inhibrx, Inc.","symbol":"INBX"},"owners":[{"id":41288,"kind":"person","name":"FORSYTH DOUGLAS","position":1,"cik":"0001240801","reported_name":"FORSYTH 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