{"transactions":[{"id":809471,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-04-13T20:51:09.000Z","date":"2026-04-09","kind":"grant","planned":false,"acquired":true,"shares":350000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares subject to the option shall be scheduled to vest monthly over a term of 48 months on the monthly anniversaries of the grant date, subject to the optionee continuing to be a Service Provider (as defined in the Issuer's 2026 Equity Incentive Plan) through the applicable vesting dates."}],"balance_after":350000,"derivative":{"exercise_price":9.54,"expiration_date":"2036-04-08","underlying":"Common Stock","underlying_shares":350000},"source":{"system":"sec-edgar","filing":"0001794629-26-000006","document":"form4-04132026_080459.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000006/form4-04132026_080459.xml","form_type":"4"}},{"id":857805,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-05T23:59:34.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":false,"shares":7418,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 3, 2025, the reporting person was granted 7,418 RSUs (as adjusted for the 10-for-1 reverse stock split completed on September 17, 2025). 100% of the RSUs vested on the one (1) year anniversary of the grant date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 3, 2025, the reporting person was granted 7,418 RSUs (as adjusted for the 10-for-1 reverse stock split completed on September 17, 2025). 100% of the RSUs vested on the one (1) year anniversary of the grant date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":7418},"source":{"system":"sec-edgar","filing":"0001794629-26-000004","document":"form4-03052026_110324.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000004/form4-03052026_110324.xml","form_type":"4"}},{"id":857804,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2026-03-05T23:59:34.000Z","date":"2026-03-04","kind":"sale","planned":false,"acquired":false,"shares":1720,"price":5.37,"value":9236.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock sold to cover tax withholding and remittance obligations in connection with the vesting of restricted stock units (\"RSU\") pursuant to mandatory \"sell to cover\" policies maintained by the Issuer and provisions contained in the reporting person's applicable RSU agreement, and does not represent a discretionary sale by the reporting person. No additional shares of common stock were sold by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The \"Amount\" and \"Price\" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $5.03 to $5.70, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein."}],"balance_after":15887,"source":{"system":"sec-edgar","filing":"0001794629-26-000004","document":"form4-03052026_110324.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000004/form4-03052026_110324.xml","form_type":"4"}},{"id":857803,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2026-03-05T23:59:34.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":true,"shares":7418,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":17607,"source":{"system":"sec-edgar","filing":"0001794629-26-000004","document":"form4-03052026_110324.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000004/form4-03052026_110324.xml","form_type":"4"}},{"id":949940,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-01-06T00:52:35.000Z","date":"2025-12-31","kind":"exercise","planned":false,"acquired":false,"shares":4667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F4","text":"RSUs convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On October 1, 2024, the reporting person was granted 14,000 RSUs. One-third (1/3rd) of the RSUs vest on each of December 31, 2024, June 30, 2025 and December 31, 2025, subject to the reporting person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On October 1, 2024, the reporting person was granted 14,000 RSUs. One-third (1/3rd) of the RSUs vest on each of December 31, 2024, June 30, 2025 and December 31, 2025, subject to the reporting person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":4667},"source":{"system":"sec-edgar","filing":"0001794629-26-000002","document":"form4-01062026_120132.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000002/form4-01062026_120132.xml","form_type":"4"}},{"id":949939,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2026-01-06T00:52:35.000Z","date":"2026-01-02","kind":"sale","planned":false,"acquired":false,"shares":1644,"price":6.88,"value":11310.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents shares of common stock sold to cover tax withholding and remittance obligations in connection with the vesting of restricted stock units (\"RSU\") pursuant to mandatory \"sell to cover\" policies maintained by the issuer and provisions contained in the reporting person's applicable RSU agreement, and does not represent a discretionary sale by the reporting person. No additional shares of common stock were sold by the reporting person and the shares of common stock received upon settlement of the RSUs are subject to a lock-up agreement with Cantor Fitzgerald & Co. entered into in connection with the Issuer's private placement in December 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The \"Amount\" and \"Price\" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $6.60 to $7.56, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein."}],"balance_after":10189,"source":{"system":"sec-edgar","filing":"0001794629-26-000002","document":"form4-01062026_120132.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000002/form4-01062026_120132.xml","form_type":"4"}},{"id":949938,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2026-01-06T00:52:35.000Z","date":"2025-12-31","kind":"exercise","planned":false,"acquired":true,"shares":4667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reported number of shares in this Form 4 has been adjusted to reflect the impact of the Issuer's 10-for-1 reverse stock split completed on September 17, 2025 (the \"Reverse Stock Split\")."}],"balance_after":11833,"source":{"system":"sec-edgar","filing":"0001794629-26-000002","document":"form4-01062026_120132.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462926000002/form4-01062026_120132.xml","form_type":"4"}},{"id":957892,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Stock Option (Right to Buy)","published_at":"2025-12-29T21:14:11.000Z","date":"2025-12-24","kind":"grant","planned":false,"acquired":true,"shares":44508,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The exercise price is equal to the closing price per share of Common Stock as reported on the Nasdaq Global Market on the date of grant."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On September 24, 2025, the reporting person was granted an option to purchase 44,508 shares of common stock. The option was scheduled to vest only upon satisfaction of both a milestone requirement (the \"Milestone Requirement\") and a service-based requirement (the \"Service-Based Requirement\"). The Milestone Requirement was satisfied on December 23, 2025. The Service-Based Requirement will be satisfied as to 50% of the total number of shares granted under the option on December 23, 2026 and as to 1/36th of the remaining 50% on the 23rd day of each month thereafter, subject to the optionee continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan) through the applicable vesting dates."}],"balance_after":44508,"derivative":{"exercise_price":4.07,"expiration_date":"2035-09-23","underlying":"Common Stock","underlying_shares":44508},"source":{"system":"sec-edgar","filing":"0001794629-25-000003","document":"form4-12292025_091206.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000179462925000003/form4-12292025_091206.xml","form_type":"4"}},{"id":1094204,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2025-07-02T20:33:46.000Z","date":"2025-06-30","kind":"exercise","planned":false,"acquired":false,"shares":46666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"RSUs convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On October 1, 2024, the reporting person was granted 140,000 RSUs. One-third (1/3rd) of the RSUs vest on each of December 31, 2024, June 30, 2025 and December 31, 2025, subject to the reporting person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On October 1, 2024, the reporting person was granted 140,000 RSUs. One-third (1/3rd) of the RSUs vest on each of December 31, 2024, June 30, 2025 and December 31, 2025, subject to the reporting person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."}],"balance_after":46667,"derivative":{"underlying":"Common Stock","underlying_shares":46666},"source":{"system":"sec-edgar","filing":"0001415889-25-019068","document":"form4-07022025_080743.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000141588925019068/form4-07022025_080743.xml","form_type":"4"}},{"id":1094203,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2025-07-02T20:33:46.000Z","date":"2025-07-01","kind":"sale","planned":false,"acquired":false,"shares":10842,"price":0.2935,"value":3182.127,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock sold to cover tax withholding and remittance obligations in connection with the vesting of restricted stock units (\"RSU\") pursuant to mandatory \"sell to cover\" policies maintained by the issuer and provisions contained in the reporting person's applicable RSU agreement, and does not represent a discretionary sale by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The \"Amount\" and \"Price\" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $0.2854 to $0.3031, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein."}],"balance_after":71665,"source":{"system":"sec-edgar","filing":"0001415889-25-019068","document":"form4-07022025_080743.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000141588925019068/form4-07022025_080743.xml","form_type":"4"}},{"id":1094202,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common 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convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On October 1, 2024, the reporting person was granted 140,000 RSUs. One-third (1/3rd) of the RSUs vest on each of December 31, 2024, June 30, 2025 and December 31, 2025, subject to the reporting person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On October 1, 2024, the reporting person was granted 140,000 RSUs. One-third (1/3rd) of the RSUs vest on each of December 31, 2024, June 30, 2025 and December 31, 2025, subject to the reporting person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."}],"balance_after":93333,"derivative":{"underlying":"Common Stock","underlying_shares":46667},"source":{"system":"sec-edgar","filing":"0001415889-25-000544","document":"form4-01032025_100122.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000141588925000544/form4-01032025_100122.xml","form_type":"4"}},{"id":1313362,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2025-01-03T22:05:26.000Z","date":"2025-01-02","kind":"sale","planned":false,"acquired":false,"shares":10826,"price":0.5619,"value":6083.1294,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock sold to cover tax withholding and remittance obligations in connection with the vesting of restricted stock units (\"RSU\") pursuant to mandatory \"sell to cover\" policies maintained by the issuer and provisions contained in the reporting person's applicable RSU agreement, and does not represent a discretionary sale by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The \"Amount\" and \"Price\" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $0.5414 to $0.5939, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein."}],"balance_after":35841,"source":{"system":"sec-edgar","filing":"0001415889-25-000544","document":"form4-01032025_100122.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000141588925000544/form4-01032025_100122.xml","form_type":"4"}},{"id":1313361,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common 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Person continuing to be a Service Provider (as defined in the Issuer's 2020 Equity Incentive Plan (the \"Plan\")) through the applicable vesting dates."}],"balance_after":140000,"derivative":{"underlying":"Common Stock","underlying_shares":140000},"source":{"system":"sec-edgar","filing":"0001415889-24-024685","document":"form4-10032024_111055.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1620463/000141588924024685/form4-10032024_111055.xml","form_type":"4"}},{"id":1540964,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Stock Option (Right to 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sold pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported on Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $35.53 to $35.91, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F3","text":"Partial disposition of RSUs to satisfy tax withholding obligations."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":198497,"source":{"system":"sec-edgar","filing":"0001628280-24-000865","document":"wk-form4_1704752165.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/879407/000162828024000865/wk-form4_1704752165.xml","form_type":"4"}},{"id":1684796,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2024-01-08T22:16:14.000Z","date":"2024-01-05","kind":"sale","planned":true,"acquired":false,"shares":3100,"price":35.03,"value":108593.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares were sold pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported on Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $34.54 to $35.51, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F3","text":"Partial disposition of RSUs to satisfy tax withholding obligations."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":202900,"source":{"system":"sec-edgar","filing":"0001628280-24-000865","document":"wk-form4_1704752165.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/879407/000162828024000865/wk-form4_1704752165.xml","form_type":"4"}},{"id":1684795,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2024-01-08T22:16:14.000Z","date":"2024-01-05","kind":"sale","planned":true,"acquired":false,"shares":800,"price":34.11,"value":27288.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares were sold pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported on Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $33.54 to $34.49, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F3","text":"Partial disposition of RSUs to satisfy tax withholding obligations."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":206000,"source":{"system":"sec-edgar","filing":"0001628280-24-000865","document":"wk-form4_1704752165.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879407/000162828024000865/wk-form4_1704752165.xml","form_type":"4"}},{"id":1684794,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2024-01-08T22:16:14.000Z","date":"2024-01-04","kind":"grant","planned":true,"acquired":true,"shares":75000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares underlying restricted stock units with a grant date 01/04/24, which will vest in four equal annual installments."}],"balance_after":206800,"source":{"system":"sec-edgar","filing":"0001628280-24-000865","document":"wk-form4_1704752165.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879407/000162828024000865/wk-form4_1704752165.xml","form_type":"4"}},{"id":1731835,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2023-11-22T19:31:42.000Z","date":"2023-11-20","kind":"sale","planned":true,"acquired":false,"shares":4942,"price":29,"value":143318.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported on Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $28.91 to $29.15, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":131800,"source":{"system":"sec-edgar","filing":"0001628280-23-039850","document":"wk-form4_1700681491.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879407/000162828023039850/wk-form4_1700681491.xml","form_type":"4"}},{"id":1731834,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2023-11-22T19:31:42.000Z","date":"2023-11-20","kind":"sale","planned":true,"acquired":false,"shares":14758,"price":28.73,"value":423997.34,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported on Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $27.97 to $28.90, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":136742,"source":{"system":"sec-edgar","filing":"0001628280-23-039850","document":"wk-form4_1700681491.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879407/000162828023039850/wk-form4_1700681491.xml","form_type":"4"}},{"id":2064211,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2023-01-06T00:18:35.000Z","date":"2023-01-04","kind":"grant","acquired":true,"shares":60000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares underlying a restricted stock unit, which shares will vest in four equal annual installments, with a commencement date of 1/4/23."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":151500,"source":{"system":"sec-edgar","filing":"0001209191-23-002119","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919123002119/doc4.xml","form_type":"4"}},{"id":2107562,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"COMMON STOCK","published_at":"2022-11-22T23:05:55.000Z","date":"2022-11-21","kind":"sale","acquired":false,"shares":200,"price":30.62,"value":6124.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Open market sale pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The sale was made to generate proceeds to cover the tax liability incident to the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.61 to $30.62, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":91500,"source":{"system":"sec-edgar","filing":"0001209191-22-058469","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919122058469/doc4.xml","form_type":"4"}},{"id":2107561,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"COMMON STOCK","published_at":"2022-11-22T23:05:55.000Z","date":"2022-11-21","kind":"sale","acquired":false,"shares":19300,"price":29.98,"value":578614.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Open market sale pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The sale was made to generate proceeds to cover the tax liability incident to the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.60 to $30.55, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."}],"balance_after":91700,"source":{"system":"sec-edgar","filing":"0001209191-22-058469","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919122058469/doc4.xml","form_type":"4"}},{"id":2501561,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2021-11-22T21:56:08.000Z","date":"2021-11-19","kind":"sale","acquired":false,"shares":100,"price":70.99,"value":7099.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Open market sale pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The sale was made to generate proceeds to cover the tax liability incident to the vesting of restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person which are subject to certain vesting conditions."}],"balance_after":111000,"source":{"system":"sec-edgar","filing":"0001209191-21-066123","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919121066123/doc4.xml","form_type":"4"}},{"id":2501560,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2021-11-22T21:56:08.000Z","date":"2021-11-19","kind":"sale","acquired":false,"shares":5696,"price":70.01,"value":398776.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Open market sale pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The sale was made to generate proceeds to cover the tax liability incident to the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.54 to $70.36, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."}],"balance_after":111100,"source":{"system":"sec-edgar","filing":"0001209191-21-066123","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919121066123/doc4.xml","form_type":"4"}},{"id":2501559,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2021-11-22T21:56:08.000Z","date":"2021-11-19","kind":"sale","acquired":false,"shares":13704,"price":69.01,"value":945713.04,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Open market sale pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The sale was made to generate proceeds to cover the tax liability incident to the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported on Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.54 to $69.53, inclusive. The reporting person undertakes to provide to Arrowhead Pharmaceuticals, Inc., any security holder of Arrowhead Pharmaceuticals, 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 ranges set forth in this footnote of this Form 4."}],"balance_after":116796,"source":{"system":"sec-edgar","filing":"0001209191-21-066123","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919121066123/doc4.xml","form_type":"4"}},{"id":2971862,"issuer":{"id":3472,"kind":"organization","name":"ARROWHEAD PHARMACEUTICALS, INC."},"owners":[{"id":52680,"kind":"person","name":"San Martin Javier","position":1,"cik":"0001794629","reported_name":"San Martin Javier","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2020-11-20T23:03:03.000Z","date":"2020-11-19","kind":"sale","acquired":false,"shares":19500,"price":69.39,"value":1353105.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Open market sale pursuant to a 10b5-1 trading plan adopted by the Reporting Person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. The sale was made to generate proceeds to cover the tax liability incident to the vesting of restricted stock units."}],"balance_after":130500,"source":{"system":"sec-edgar","filing":"0001209191-20-059753","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879407/000120919120059753/doc4.xml","form_type":"4"}}]}