{"transactions":[{"id":809951,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-04-13T20:58:15.000Z","date":"2026-04-09","kind":"grant","planned":false,"acquired":true,"shares":300000,"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":300000,"derivative":{"exercise_price":9.54,"expiration_date":"2036-04-08","underlying":"Common Stock","underlying_shares":300000},"source":{"system":"sec-edgar","filing":"0001822499-26-000006","document":"form4-04132026_080410.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000006/form4-04132026_080410.xml","form_type":"4"}},{"id":859622,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-03-06T00:02:55.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":false,"shares":5856,"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 5,856 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 5,856 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":5856},"source":{"system":"sec-edgar","filing":"0001822499-26-000004","document":"form4-03062026_120346.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000004/form4-03062026_120346.xml","form_type":"4"}},{"id":859621,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2026-03-06T00:02:55.000Z","date":"2026-03-04","kind":"sale","planned":false,"acquired":false,"shares":1359,"price":5.37,"value":7297.83,"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":25178,"source":{"system":"sec-edgar","filing":"0001822499-26-000004","document":"form4-03062026_120346.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000004/form4-03062026_120346.xml","form_type":"4"}},{"id":859620,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2026-03-06T00:02:55.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":true,"shares":5856,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":26537,"source":{"system":"sec-edgar","filing":"0001822499-26-000004","document":"form4-03062026_120346.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000004/form4-03062026_120346.xml","form_type":"4"}},{"id":953355,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-01-06T00:50:13.000Z","date":"2025-12-31","kind":"exercise","planned":false,"acquired":false,"shares":3667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F7","text":"RSUs convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F8","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"On October 1, 2024, the reporting person was granted 11,000 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":"F9","text":"On October 1, 2024, the reporting person was granted 11,000 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":3667},"source":{"system":"sec-edgar","filing":"0001822499-26-000002","document":"form4-01062026_120110.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000002/form4-01062026_120110.xml","form_type":"4"}},{"id":953354,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2026-01-06T00:50:13.000Z","date":"2026-01-02","kind":"sale","planned":false,"acquired":false,"shares":876,"price":6.88,"value":6026.88,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","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":"F6","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":20681,"source":{"system":"sec-edgar","filing":"0001822499-26-000002","document":"form4-01062026_120110.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000002/form4-01062026_120110.xml","form_type":"4"}},{"id":953353,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2026-01-06T00:50:13.000Z","date":"2025-12-31","kind":"exercise","planned":false,"acquired":true,"shares":3667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":21557,"source":{"system":"sec-edgar","filing":"0001822499-26-000002","document":"form4-01062026_120110.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000002/form4-01062026_120110.xml","form_type":"4"}},{"id":953352,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2026-01-06T00:50:13.000Z","date":"2025-11-18","kind":"grant","planned":false,"acquired":true,"shares":1000,"price":2.31,"value":2310.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"), for the ESPP Purchase Period (as defined in the ESPP) of May 19, 2025 through November 18, 2025. This transaction is also exempt under Rule 16b-3(c)."},{"field":"security","element":"securityTitle","label":"F2","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\")."},{"field":"date","element":"transactionDate","label":"F3","text":"The Purchase Period ended November 18, 2025 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began May 19, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on November 18, 2025."}],"balance_after":17890,"source":{"system":"sec-edgar","filing":"0001822499-26-000002","document":"form4-01062026_120110.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249926000002/form4-01062026_120110.xml","form_type":"4"}},{"id":958922,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Stock Option (Right to Buy)","published_at":"2025-12-29T21:15:51.000Z","date":"2025-12-24","kind":"grant","planned":false,"acquired":true,"shares":35138,"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 35,138 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":35138,"derivative":{"exercise_price":4.07,"expiration_date":"2035-09-23","underlying":"Common Stock","underlying_shares":35138},"source":{"system":"sec-edgar","filing":"0001822499-25-000005","document":"form4-12292025_091245.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000182249925000005/form4-12292025_091245.xml","form_type":"4"}},{"id":1096511,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Restricted Stock Units","published_at":"2025-07-02T20:35:30.000Z","date":"2025-06-30","kind":"exercise","planned":false,"acquired":false,"shares":36666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F6","text":"RSUs convert into common stock on a one-for-one basis."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"On October 1, 2024, the reporting person was granted 110,000 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":"F8","text":"On October 1, 2024, the reporting person was granted 110,000 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":36667,"derivative":{"underlying":"Common Stock","underlying_shares":36666},"source":{"system":"sec-edgar","filing":"0001415889-25-019070","document":"form4-07022025_080725.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925019070/form4-07022025_080725.xml","form_type":"4"}},{"id":1096510,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2025-07-02T20:35:30.000Z","date":"2025-07-01","kind":"sale","planned":false,"acquired":false,"shares":8526,"price":0.2935,"value":2502.381,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","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":"F5","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":168901,"source":{"system":"sec-edgar","filing":"0001415889-25-019070","document":"form4-07022025_080725.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925019070/form4-07022025_080725.xml","form_type":"4"}},{"id":1096509,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2025-07-02T20:35:30.000Z","date":"2025-06-30","kind":"exercise","planned":false,"acquired":true,"shares":36666,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":177427,"source":{"system":"sec-edgar","filing":"0001415889-25-019070","document":"form4-07022025_080725.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925019070/form4-07022025_080725.xml","form_type":"4"}},{"id":1096508,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2025-07-02T20:35:30.000Z","date":"2025-05-19","kind":"grant","planned":false,"acquired":true,"shares":10000,"price":0.2312,"value":2312.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"),for the ESPP Purchase Period (as defined in the ESPP) of November 18, 2024 through May 19, 2025. This transaction is exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F2","text":"The Purchase Period ended March 19, 2025 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began November 18, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on May 19, 2025."}],"balance_after":140761,"source":{"system":"sec-edgar","filing":"0001415889-25-019070","document":"form4-07022025_080725.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925019070/form4-07022025_080725.xml","form_type":"4"}},{"id":1232003,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH 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of the RSUs shall vest on the one (1) year anniversary of the grant date, 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 vesting date."}],"balance_after":58563,"derivative":{"underlying":"Common Stock","underlying_shares":58563},"source":{"system":"sec-edgar","filing":"0001415889-25-006552","document":"form4-03042025_090334.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925006552/form4-03042025_090334.xml","form_type":"4"}},{"id":1232002,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Stock Option (Right to Buy)","published_at":"2025-03-04T21:30:43.000Z","date":"2025-03-03","kind":"grant","planned":false,"acquired":true,"shares":87845,"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 2020 Equity Incentive Plan) through the applicable vesting dates."}],"balance_after":87845,"derivative":{"exercise_price":0.3762,"expiration_date":"2035-03-02","underlying":"Common 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into common stock on a one-for-one basis."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"Each RSU represents a contingent right to receive one (1) share of Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"On October 1, 2024, the reporting person was granted 110,000 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":"F8","text":"On October 1, 2024, the reporting person was granted 110,000 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":73333,"derivative":{"underlying":"Common Stock","underlying_shares":36667},"source":{"system":"sec-edgar","filing":"0001415889-25-000534","document":"form4-01032025_100111.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925000534/form4-01032025_100111.xml","form_type":"4"}},{"id":1316671,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2025-01-03T22:03:14.000Z","date":"2025-01-02","kind":"sale","planned":false,"acquired":false,"shares":8510,"price":0.5619,"value":4781.769,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","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":"F5","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":130761,"source":{"system":"sec-edgar","filing":"0001415889-25-000534","document":"form4-01032025_100111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925000534/form4-01032025_100111.xml","form_type":"4"}},{"id":1316670,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2025-01-03T22:03:14.000Z","date":"2024-12-31","kind":"exercise","planned":false,"acquired":true,"shares":36667,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":139271,"source":{"system":"sec-edgar","filing":"0001415889-25-000534","document":"form4-01032025_100111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925000534/form4-01032025_100111.xml","form_type":"4"}},{"id":1316669,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2025-01-03T22:03:14.000Z","date":"2024-11-18","kind":"grant","planned":false,"acquired":true,"shares":9920,"price":0.55,"value":5456.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"), for the ESPP Purchase Period (as defined in the ESPP) of May 20, 2024 through November 18, 2024. This transaction is exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F2","text":"The Purchase Period ended November 18, 2024 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began May 20, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on November 18, 2024."}],"balance_after":102604,"source":{"system":"sec-edgar","filing":"0001415889-25-000534","document":"form4-01032025_100111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588925000534/form4-01032025_100111.xml","form_type":"4"}},{"id":1392724,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH 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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":110000,"derivative":{"underlying":"Common Stock","underlying_shares":110000},"source":{"system":"sec-edgar","filing":"0001415889-24-024684","document":"form4-10032024_111019.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924024684/form4-10032024_111019.xml","form_type":"4"}},{"id":1414589,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common 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These shares were sold in multiple transactions at prices ranging from $0.5505 to $0.5751, 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":92684,"source":{"system":"sec-edgar","filing":"0001415889-24-022985","document":"form4-09052024_110908.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924022985/form4-09052024_110908.xml","form_type":"4"}},{"id":1414588,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2024-09-05T23:49:11.000Z","date":"2024-09-03","kind":"grant","planned":false,"acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F4","text":"On November 3, 2021, the reporting person was granted restricted stock units (\"RSUs\") representing 30,000 shares of Common Stock of the Issuer. The RSUs are scheduled to vest according to the following amended vesting schedule: (1) one third (1/3rd) of the number of shares subject to the RSU award vest at the completion of the public readout of topline results of the Issuer's ACT-AD Phase 2 clinical trial; (2) one third (1/3rd) of the number of shares subject to the RSU award vest as of the date the Compensation Committee (the \"Committee\") determines that enrollment of the Company's LIFT-AD Phase 2/3 clinical trial has been completed, and (3) one third (1/3rd) of the number of shares subject to the RSU award vest as of the completion of the public readout of topline results of the Issuer's LIFT-AD Phase 2/3 clinical trial (the \"LIFT-AD Readout\"), in each case subject to continued service with the Issuer through the applicable vesting date."},{"field":"shares","element":"transactionShares","label":"F5","text":"On September 3, 2024, the Company completed the public readout of the topline results of its LIFT-AD Phase 2/3 clinical trial and 10,000 RSUs vested on such date."}],"balance_after":95209,"source":{"system":"sec-edgar","filing":"0001415889-24-022985","document":"form4-09052024_110908.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924022985/form4-09052024_110908.xml","form_type":"4"}},{"id":1414587,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2024-09-05T23:49:11.000Z","date":"2024-05-20","kind":"grant","planned":false,"acquired":true,"shares":4953,"price":1.34,"value":6637.02,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"), for the ESPP Purchase Period (as defined in the ESPP) of November 20, 2023 through May 20, 2024. This transaction is exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F2","text":"The Purchase Period ended May 20, 2024 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began November 20, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on November 20, 2023."}],"balance_after":85209,"source":{"system":"sec-edgar","filing":"0001415889-24-022985","document":"form4-09052024_110908.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924022985/form4-09052024_110908.xml","form_type":"4"}},{"id":1639388,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-02-16T21:54:12.000Z","date":"2024-02-14","kind":"grant","planned":false,"acquired":true,"shares":220000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"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 2020 Equity Incentive Plan) through the applicable vesting dates."}],"balance_after":220000,"derivative":{"exercise_price":3.26,"expiration_date":"2034-02-13","underlying":"Common Stock","underlying_shares":220000},"source":{"system":"sec-edgar","filing":"0001415889-24-004159","document":"form4-02162024_090202.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924004159/form4-02162024_090202.xml","form_type":"4"}},{"id":1639387,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2024-02-16T21:32:12.000Z","date":"2024-01-05","kind":"sale","planned":false,"acquired":false,"shares":2412,"price":2.91,"value":7018.92,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F10","text":"The original Form 4 incorrectly reported the transaction date as 01/05/2023."},{"field":"kind","element":"transactionCoding","label":"F11","text":"The reported shares were sold to cover the Issuer's tax withholding obligations in connection with the vesting of RSUs. Such sale was made pursuant to an Issuer-mandated policy and was not subject to discretion."},{"field":"price","element":"transactionPricePerShare","label":"F12","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 $2.84 to $3.01, 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":80256,"source":{"system":"sec-edgar","filing":"0001415889-24-004146","document":"form4a-02162024_090254.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924004146/form4a-02162024_090254.xml","form_type":"4/A","original_submission_date":"2024-01-08"}},{"id":1639386,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2024-02-16T21:32:12.000Z","date":"2024-01-04","kind":"grant","planned":false,"acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F7","text":"On November 3, 2021, the reporting person was granted restricted stock units (\"RSUs\") representing 30,000 shares of Common Stock of the Issuer. The RSUs are scheduled to vest according to the following amended vesting schedule: (1) one third (1/3rd) of the number of shares subject to the RSU award vest at the completion of the public readout of topline results of the Issuer's ACT-AD Phase 2 clinical trial; (2) one third (1/3rd) of the number of shares subject to the RSU award vest as of the date the Compensation Committee (the \"Committee\") determines that enrollment of the Company's LIFT-AD Phase 2/3 clinical trial has been completed, and (3) one third (1/3rd) of the number of shares subject to the RSU award vest as of the completion of the public readout of topline results of the Issuer's LIFT-AD Phase 2/3 clinical trial (the \"LIFT-AD Readout\"), in each case subject to continued service with the Issuer through the applicable vesting date."},{"field":"date","element":"transactionDate","label":"F8","text":"The original Form 4 incorrectly reported the transaction date as 01/04/2023."},{"field":"shares","element":"transactionShares","label":"F9","text":"On January 4, 2024, the Committee determined that enrollment of the Company's LIFT-AD Phase 2/3 clinical trial had been completed and 10,000 RSUs vested and settled on such date.  The original Form 4 incorrectly reported the determination date as January 4, 2023."}],"balance_after":82668,"source":{"system":"sec-edgar","filing":"0001415889-24-004146","document":"form4a-02162024_090254.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924004146/form4a-02162024_090254.xml","form_type":"4/A","original_submission_date":"2024-01-08"}},{"id":1639385,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2024-02-16T21:32:12.000Z","date":"2023-11-20","kind":"grant","planned":false,"acquired":true,"shares":3397,"price":1.34,"value":4551.98,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F4","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the ESPP, for the ESPP Purchase Period (as defined in the ESPP) of May 18, 2023 through November 20, 2023. This transaction is also exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F5","text":"The Purchase Period ended November 20, 2023 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began May 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on November 20, 2023."}],"balance_after":72668,"source":{"system":"sec-edgar","filing":"0001415889-24-004146","document":"form4a-02162024_090254.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924004146/form4a-02162024_090254.xml","form_type":"4/A","original_submission_date":"2024-01-08"}},{"id":1639384,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF SCIENTIFIC OFFICER"}}],"security":"Common Stock","published_at":"2024-02-16T21:32:12.000Z","date":"2023-05-18","kind":"grant","planned":false,"acquired":true,"shares":809,"price":2.41,"value":1949.69,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"), for the ESPP Purchase Period (as defined in the ESPP) of November 18, 2022 through May 18, 2023. This transaction is also exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F2","text":"The Purchase Period ended May 18, 2023 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began November 18, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on May 18, 2023."}],"balance_after":69271,"source":{"system":"sec-edgar","filing":"0001415889-24-004146","document":"form4a-02162024_090254.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000141588924004146/form4a-02162024_090254.xml","form_type":"4/A","original_submission_date":"2024-01-08"}},{"id":1684717,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-01-08T21:36:44.000Z","date":"2023-01-05","kind":"sale","planned":false,"acquired":false,"shares":2412,"price":2.91,"value":7018.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F9","text":"The reported shares were sold to cover the Issuer's tax withholding obligations in connection with the vesting of RSUs. Such sale was made pursuant to an Issuer-mandated policy and was not subject to discretion."},{"field":"price","element":"transactionPricePerShare","label":"F10","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 $2.84 to $3.01, 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":80256,"source":{"system":"sec-edgar","filing":"0001209191-24-001142","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919124001142/doc4.xml","form_type":"4"}},{"id":1684716,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-01-08T21:36:44.000Z","date":"2023-01-04","kind":"grant","planned":false,"acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F7","text":"On November 3, 2021, the reporting person was granted restricted stock units (\"RSUs\") representing 30,000 shares of Common Stock of the Issuer. The RSUs are scheduled to vest according to the following amended vesting schedule: (1) one third (1/3rd) of the number of shares subject to the RSU award vest at the completion of the public readout of topline results of the Issuer's ACT-AD Phase 2 clinical trial; (2) one third (1/3rd) of the number of shares subject to the RSU award vest as of the date the Compensation Committee (the \"Committee\") determines that enrollment of the Company's LIFT-AD Phase 2/3 clinical trial has been completed, and (3) one third (1/3rd) of the number of shares subject to the RSU award vest as of the completion of the public readout of topline results of the Issuer's LIFT-AD Phase 2/3 clinical trial (the \"LIFT-AD Readout\"), in each case subject to continued service with the Issuer through the applicable vesting date."},{"field":"shares","element":"transactionShares","label":"F8","text":"On January 4, 2023, the Committee determined that enrollment of the Company's LIFT-AD Phase 2/3 clinical trial had been completed and 10,000 RSUs vested and settled on such date."}],"balance_after":82668,"source":{"system":"sec-edgar","filing":"0001209191-24-001142","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919124001142/doc4.xml","form_type":"4"}},{"id":1684715,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-01-08T21:36:44.000Z","date":"2023-11-20","kind":"grant","planned":false,"acquired":true,"shares":3397,"price":1.34,"value":4551.98,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F4","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the ESPP, for the ESPP Purchase Period (as defined in the ESPP) of May 18, 2023 through November 20, 2023. This transaction is also exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F5","text":"The Purchase Period ended November 20, 2023 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began May 18, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on November 20, 2023."}],"balance_after":72668,"source":{"system":"sec-edgar","filing":"0001209191-24-001142","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919124001142/doc4.xml","form_type":"4"}},{"id":1684714,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-01-08T21:36:44.000Z","date":"2023-05-18","kind":"grant","planned":false,"acquired":true,"shares":809,"price":2.41,"value":1949.69,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"), for the ESPP Purchase Period (as defined in the ESPP) of November 18, 2022 through May 18, 2023. This transaction is also exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F2","text":"The Purchase Period ended May 18, 2023 and is the Purchase Period comprising the Offering Period (as defined in the ESPP) that began November 18, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on May 18, 2023."}],"balance_after":69271,"source":{"system":"sec-edgar","filing":"0001209191-24-001142","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919124001142/doc4.xml","form_type":"4"}},{"id":1938362,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2023-03-27T20:57:33.000Z","date":"2023-03-24","kind":"exercise","planned":false,"acquired":false,"shares":6410,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"One-fourth of the shares subject to the option vested on January 1, 2020 and one-fourth of the shares subject to the option vest on each year thereafter."}],"balance_after":0,"derivative":{"exercise_price":1.35,"expiration_date":"2028-12-17","underlying":"Common Stock","underlying_shares":6410},"source":{"system":"sec-edgar","filing":"0001209191-23-021248","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919123021248/doc4.xml","form_type":"4"}},{"id":1938361,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2023-03-27T20:57:33.000Z","date":"2023-03-24","kind":"exercise","planned":false,"acquired":true,"shares":6410,"price":1.35,"value":8653.5,"ownership":{"direct":true},"balance_after":68462,"source":{"system":"sec-edgar","filing":"0001209191-23-021248","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919123021248/doc4.xml","form_type":"4"}},{"id":2048935,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive VP, Research"}}],"security":"Stock Option (Right to Buy)","published_at":"2023-01-23T22:26:34.000Z","date":"2023-01-19","kind":"grant","acquired":true,"shares":150000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"One thirty-sixth (1/36th) of the shares subject to the option will vest on February 19, 2023 and one thirty-sixth of the shares subject to the option will vest each month thereafter."}],"balance_after":150000,"derivative":{"exercise_price":3.37,"expiration_date":"2033-01-18","underlying":"Common Stock","underlying_shares":150000},"source":{"system":"sec-edgar","filing":"0001209191-23-004468","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919123004468/doc4.xml","form_type":"4"}},{"id":2048934,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive VP, Research"}}],"security":"Common Stock","published_at":"2023-01-23T22:26:34.000Z","date":"2022-11-18","kind":"grant","acquired":true,"shares":657,"price":2.74,"value":1800.18,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Athira Pharma, Inc. 2020 Employee Stock Purchase Plan (\"ESPP\"), for the ESPP Purchase Period (as defined in the ESPP) of May 18, 2022 through November 18, 2022. This transaction is also exempt under Rule 16b-3(c)."},{"field":"date","element":"transactionDate","label":"F2","text":"The Purchase Period ended November 18, 2022 and is the sole Purchase Period in the Offering Period (as defined in the ESPP) that began May 18, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In accordance with the ESPP, these shares were purchased based on 85% of the closing price on November 18, 2022."}],"balance_after":62052,"source":{"system":"sec-edgar","filing":"0001209191-23-004468","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919123004468/doc4.xml","form_type":"4"}},{"id":2129981,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive VP, Research"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-11-01T00:17:37.000Z","date":"2022-10-28","kind":"exercise","acquired":false,"shares":3700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"One-fourth of the shares subject to the option vested on January 1, 2020 and one-fourth of the shares subject to the option vest on each year thereafter."}],"balance_after":6410,"derivative":{"exercise_price":1.35,"expiration_date":"2028-12-17","underlying":"Common Stock","underlying_shares":3700},"source":{"system":"sec-edgar","filing":"0001209191-22-054950","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919122054950/doc4.xml","form_type":"4"}},{"id":2129980,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive VP, Research"}}],"security":"Common Stock","published_at":"2022-11-01T00:17:37.000Z","date":"2022-10-28","kind":"exercise","acquired":true,"shares":3700,"price":1.35,"value":4995.0,"ownership":{"direct":true},"balance_after":61395,"source":{"system":"sec-edgar","filing":"0001209191-22-054950","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919122054950/doc4.xml","form_type":"4"}},{"id":2222362,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive VP, Research"}}],"security":"Common Stock","published_at":"2022-06-24T23:25:03.000Z","date":"2022-06-23","kind":"sale","acquired":false,"shares":2614,"price":2.69,"value":7031.66,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The reported shares were sold to cover the Issuer's tax withholding obligations in connection with the vesting of RSUs. Such sale was made pursuant to an Issuer-mandated policy and was not subject to discretion."},{"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 $2.62 to $2.78, 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":57695,"source":{"system":"sec-edgar","filing":"0001209191-22-039336","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822499/000120919122039336/doc4.xml","form_type":"4"}},{"id":2222361,"issuer":{"id":1487,"kind":"organization","name":"LeonaBio, Inc.","symbol":"LONA"},"owners":[{"id":52780,"kind":"person","name":"CHURCH KEVIN","position":1,"cik":"0001822499","reported_name":"CHURCH KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive VP, Research"}}],"security":"Common Stock","published_at":"2022-06-24T23:25:03.000Z","date":"2022-06-22","kind":"grant","acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 3, 2021, the reporting person was granted restricted stock units (\"RSUs\") representing 30,000 shares of Common Stock of the Issuer. 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