{"transactions":[{"id":730220,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-06-22T20:05:03.000Z","date":"2026-06-18","kind":"sale","planned":false,"acquired":false,"shares":1776,"price":2.71,"value":4812.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 2,000 shares acquired under the Issuer's 2020 Employee Stock Purchase Plan on May 31, 2026."}],"balance_after":390247,"source":{"system":"sec-edgar","filing":"0001193125-26-277507","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000119312526277507/ownership.xml","form_type":"4"}},{"id":741370,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":27507,"kind":"person","name":"RA Capital Nexus Fund, L.P.","position":3,"cik":"0001780117","reported_name":"RA Capital Nexus Fund, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":4,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":5,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:30:26.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award, subject to Dr. Scheiner's continued service through the applicable vesting date. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Dr. Scheiner's separation from service with the Issuer due to the his death or \"disability\" (as described in the applicable award agreement)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\") and RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, the Nexus Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Under Dr. Scheiner's arrangement with the Adviser, Dr. Scheiner holds the option for the benefit of the Fund and the Nexus Fund. Dr. Scheiner is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Persons therefore disclaim beneficial ownership of the option and underlying common stock."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001231919-26-000621","document":"form4-06112026_080618.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000123191926000621/form4-06112026_080618.xml","form_type":"4"}},{"id":741208,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":31983,"kind":"person","name":"Behbahani Ali","position":1,"cik":"0001613867","reported_name":"Behbahani Ali","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:27:06.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267632","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1613867/000119312526267632/ownership.xml","form_type":"4"}},{"id":741221,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39164,"kind":"person","name":"George Simeon","position":1,"cik":"0001595117","reported_name":"George Simeon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:20:52.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267601","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1595117/000119312526267601/ownership.xml","form_type":"4"}},{"id":741994,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39339,"kind":"person","name":"Vratsanos George","position":1,"cik":"0002025731","reported_name":"Vratsanos George","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:11:22.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267538","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2025731/000119312526267538/ownership.xml","form_type":"4"}},{"id":741802,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":38207,"kind":"person","name":"Scheiner Zachary","position":1,"cik":"0001816523","reported_name":"Scheiner Zachary","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:08:38.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Under the Reporting Person's arrangement with RA Capital Management, L.P. (the \"Adviser\"), the Reporting Person holds the stock option for the benefit of the RA Capital Healthcare Fund, L.P. (the \"Fund\") and the RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the stock option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the stock option and underlying common stock."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267524","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816523/000119312526267524/ownership.xml","form_type":"4"}},{"id":741445,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39209,"kind":"person","name":"PATTERSON LEONE D","position":1,"cik":"0001233539","reported_name":"PATTERSON LEONE D","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:07:57.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267521","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1233539/000119312526267521/ownership.xml","form_type":"4"}},{"id":741215,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:07:23.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267519","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000119312526267519/ownership.xml","form_type":"4"}},{"id":741774,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39297,"kind":"person","name":"Thedinga Angela","position":1,"cik":"0001804588","reported_name":"Thedinga Angela","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-11T20:06:52.000Z","date":"2026-06-10","kind":"grant","planned":false,"acquired":true,"shares":37000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. 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connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."}],"balance_after":167727,"source":{"system":"sec-edgar","filing":"0001193125-26-016862","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816598/000119312526016862/ownership.xml","form_type":"4"}},{"id":943089,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Stock Option (right to 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The remaining portion of the option is scheduled to vest and become exercisable in 36 equal monthly installments occurring on the completion of each successive month of the Reporting Person's service to the Issuer following June 23, 2026."}],"balance_after":500000,"derivative":{"exercise_price":1.75,"expiration_date":"2035-06-22","underlying":"Common Stock","underlying_shares":500000},"source":{"system":"sec-edgar","filing":"0000950170-25-089939","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2073530/000095017025089939/ownership.xml","form_type":"4"}},{"id":1104787,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-06-20T20:08:53.000Z","date":"2025-06-18","kind":"sale","planned":false,"acquired":false,"shares":1790,"price":1.79,"value":3204.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $1.76 to $1.79. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 2,000 shares acquired under the Issuer's 2020 Employee Stock Purchase Plan on May 31, 2025."}],"balance_after":320069,"source":{"system":"sec-edgar","filing":"0000950170-25-088501","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000095017025088501/ownership.xml","form_type":"4"}},{"id":1117419,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39164,"kind":"person","name":"George Simeon","position":1,"cik":"0001595117","reported_name":"George Simeon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:39:15.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083803","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1595117/000095017025083803/ownership.xml","form_type":"4"}},{"id":1117385,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":31983,"kind":"person","name":"Behbahani Ali","position":1,"cik":"0001613867","reported_name":"Behbahani Ali","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:25:33.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083779","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1613867/000095017025083779/ownership.xml","form_type":"4"}},{"id":1117552,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":27507,"kind":"person","name":"RA Capital Nexus Fund, L.P.","position":3,"cik":"0001780117","reported_name":"RA Capital Nexus Fund, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":4,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":5,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:10:27.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award, subject to Dr. Scheiner's continued service through the applicable vesting date. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Dr. Scheiner's separation from service with the Issuer due to the his death or \"disability\" (as described in the applicable award agreement)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\") and RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, the Nexus Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Zachary Scheiner is a Principal of the Adviser who serves on the Issuer's board of directors. Under Dr. Scheiner's arrangement with the Adviser, Dr. Scheiner holds the option for the benefit of the Fund and the Nexus Fund. Dr. Scheiner is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Persons therefore disclaim beneficial ownership of the option and underlying common stock."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0001415889-25-016224","document":"form4-06092025_080617.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000141588925016224/form4-06092025_080617.xml","form_type":"4"}},{"id":1117557,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:05:57.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":377000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option is scheduled to vest and become exercisable as to 40% of the shares subject to the grant on June 5, 2026. The remaining 60% of the shares subject to the grant is scheduled to vest and become exercisable on June 5, 2027."}],"balance_after":377000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-05","underlying":"Common Stock","underlying_shares":377000},"source":{"system":"sec-edgar","filing":"0000950170-25-083708","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000095017025083708/ownership.xml","form_type":"4"}},{"id":1118294,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39339,"kind":"person","name":"Vratsanos George","position":1,"cik":"0002025731","reported_name":"Vratsanos George","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:05:32.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083707","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2025731/000095017025083707/ownership.xml","form_type":"4"}},{"id":1118034,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39297,"kind":"person","name":"Thedinga Angela","position":1,"cik":"0001804588","reported_name":"Thedinga Angela","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:04:10.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083688","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1804588/000095017025083688/ownership.xml","form_type":"4"}},{"id":1118071,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":38207,"kind":"person","name":"Scheiner Zachary","position":1,"cik":"0001816523","reported_name":"Scheiner Zachary","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:02:34.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Under the Reporting Person's arrangement with RA Capital Management, L.P. (the \"Adviser\"), the Reporting Person holds the stock option for the benefit of the RA Capital Healthcare Fund, L.P. (the \"Fund\") and the RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the stock option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the stock option and underlying common stock."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083684","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816523/000095017025083684/ownership.xml","form_type":"4"}},{"id":1117649,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39209,"kind":"person","name":"PATTERSON LEONE D","position":1,"cik":"0001233539","reported_name":"PATTERSON LEONE D","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:01:49.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083681","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1233539/000095017025083681/ownership.xml","form_type":"4"}},{"id":1117407,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T20:00:37.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":46000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 5, 2026 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":46000,"derivative":{"exercise_price":1.83,"expiration_date":"2035-06-04","underlying":"Common Stock","underlying_shares":46000},"source":{"system":"sec-edgar","filing":"0000950170-25-083677","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000095017025083677/ownership.xml","form_type":"4"}},{"id":1118075,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":69151,"kind":"person","name":"Mahmood Nadir","position":1,"cik":"0001816598","reported_name":"Mahmood Nadir","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Stock Option (right to buy)","published_at":"2025-06-09T16:08:31.000Z","date":"2025-06-05","kind":"grant","planned":false,"acquired":true,"shares":123500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option is scheduled to vest and become exercisable as to 40% of the shares subject to the grant on June 5, 2026. 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The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":240737,"source":{"system":"sec-edgar","filing":"0000950170-24-075732","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000095017024075732/ownership.xml","form_type":"4"}},{"id":1473480,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39325,"kind":"person","name":"Shook David","position":1,"cik":"0001959742","reported_name":"Shook David","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2024-06-20T21:03:21.000Z","date":"2024-06-18","kind":"sale","planned":false,"acquired":false,"shares":456,"price":5.6,"value":2553.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold as required by the applicable award terms to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $5.59 to $5.60. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":116524,"source":{"system":"sec-edgar","filing":"0000950170-24-075730","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1959742/000095017024075730/ownership.xml","form_type":"4"}},{"id":1473328,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":89723,"kind":"person","name":"Trager James","position":1,"cik":"0001816549","reported_name":"Trager James","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-06-20T17:04:43.000Z","date":"2024-06-18","kind":"sale","planned":false,"acquired":false,"shares":456,"price":5.6,"value":2553.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold as required by the applicable award terms to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $5.56 to $5.60. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":150959,"source":{"system":"sec-edgar","filing":"0000950170-24-075733","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816549/000095017024075733/ownership.xml","form_type":"4"}},{"id":1472828,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84039,"kind":"person","name":"Hager Alicia J.","position":1,"cik":"0001553354","reported_name":"Hager Alicia J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Common Stock","published_at":"2024-06-20T17:02:37.000Z","date":"2024-06-18","kind":"sale","planned":false,"acquired":false,"shares":727,"price":5.6,"value":4071.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold as required by the applicable award terms to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $5.58 to $5.60.  The price reported above reflects the weighted average price.  The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":107215,"source":{"system":"sec-edgar","filing":"0000950170-24-075728","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1553354/000095017024075728/ownership.xml","form_type":"4"}},{"id":1473355,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Common Stock","published_at":"2024-06-20T17:01:13.000Z","date":"2024-06-18","kind":"sale","planned":false,"acquired":false,"shares":229,"price":5.6,"value":1282.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold as required by the applicable award terms to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $5.58 to $5.60. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":79743,"source":{"system":"sec-edgar","filing":"0000950170-24-075723","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1853197/000095017024075723/ownership.xml","form_type":"4"}},{"id":1478488,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39164,"kind":"person","name":"George Simeon","position":1,"cik":"0001595117","reported_name":"George Simeon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:30:14.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0000950170-24-073730","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1595117/000095017024073730/ownership.xml","form_type":"4"}},{"id":1478470,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":31983,"kind":"person","name":"Behbahani Ali","position":1,"cik":"0001613867","reported_name":"Behbahani Ali","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:30:13.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's  separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0000950170-24-073729","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1613867/000095017024073729/ownership.xml","form_type":"4"}},{"id":1478695,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":27507,"kind":"person","name":"RA Capital Nexus Fund, L.P.","position":3,"cik":"0001780117","reported_name":"RA Capital Nexus Fund, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":4,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":5,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:18:05.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award, subject to Dr. Scheiner's continued service through the applicable vesting date. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Dr. Scheiner's separation from service with the Issuer due to the his death or \"disability\" (as described in the applicable award agreement)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\") and RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, the Nexus Fund, Dr. Kolchinsky and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Zachary Scheiner is a Principal of the Adviser who serves on the Issuer's board of directors. Under Dr. Scheiner's arrangement with the Adviser, Dr. Scheiner holds the option for the benefit of the Fund and the Nexus Fund. Dr. Scheiner is obligated to turn over to the Adviser any net cash or stock received upon exercise of the option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Persons therefore disclaim beneficial ownership of the option and underlying common stock."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0001415889-24-016893","document":"form4-06142024_080600.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000141588924016893/form4-06142024_080600.xml","form_type":"4"}},{"id":1479199,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":38207,"kind":"person","name":"Scheiner Zachary","position":1,"cik":"0001816523","reported_name":"Scheiner Zachary","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:10:51.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Under the Reporting Person's arrangement with RA Capital Management, L.P. (the \"Adviser\"), the Reporting Person holds the stock option for the benefit of the RA Capital Healthcare Fund, L.P. (the \"Fund\") and the RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the stock option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the stock option and underlying common stock."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0000950170-24-073652","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816523/000095017024073652/ownership.xml","form_type":"4"}},{"id":1478757,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39209,"kind":"person","name":"PATTERSON LEONE D","position":1,"cik":"0001233539","reported_name":"PATTERSON LEONE D","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:09:03.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0000950170-24-073643","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1233539/000095017024073643/ownership.xml","form_type":"4"}},{"id":1478473,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:08:33.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0000950170-24-073642","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000095017024073642/ownership.xml","form_type":"4"}},{"id":1479145,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39297,"kind":"person","name":"Thedinga Angela","position":1,"cik":"0001804588","reported_name":"Thedinga Angela","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:07:59.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":22500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2025 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":22500,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":22500},"source":{"system":"sec-edgar","filing":"0000950170-24-073641","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1804588/000095017024073641/ownership.xml","form_type":"4"}},{"id":1479460,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39339,"kind":"person","name":"Vratsanos George","position":1,"cik":"0002025731","reported_name":"Vratsanos George","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2024-06-14T20:07:22.000Z","date":"2024-06-13","kind":"grant","planned":false,"acquired":true,"shares":45000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option is scheduled to vest and become exercisable in three substantially equal installments on each of the first, second and third anniversaries of the grant date, subject to the Reporting Person's continued service to the Issuer."}],"balance_after":45000,"derivative":{"exercise_price":6.23,"expiration_date":"2034-06-12","underlying":"Common Stock","underlying_shares":45000},"source":{"system":"sec-edgar","filing":"0000950170-24-073639","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2025731/000095017024073639/ownership.xml","form_type":"4"}},{"id":1557471,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":27507,"kind":"person","name":"RA Capital Nexus Fund, L.P.","position":3,"cik":"0001780117","reported_name":"RA Capital Nexus Fund, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":4,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":5,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Pre- Funded Warrants (Right to Buy)","published_at":"2024-03-29T21:38:04.000Z","date":"2024-03-27","kind":"purchase","planned":false,"acquired":true,"shares":3000031,"price":9.9999,"value":30000009.9969,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The Pre-Funded Warrants have no expiration date and are exercisable at any time after the date of issuance. A holder of Pre-Funded Warrants may not exercise the Pre-Funded Warrant if the holder, together with its affiliates, would beneficially own more than 19.99% of the number of shares of common stock outstanding immediately after giving effect to such exercise."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The Pre-Funded Warrants have no expiration date and are exercisable at any time after the date of issuance. A holder of Pre-Funded Warrants may not exercise the Pre-Funded Warrant if the holder, together with its affiliates, would beneficially own more than 19.99% of the number of shares of common stock outstanding immediately after giving effect to such exercise."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\") and RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held directly by the Fund."}],"balance_after":3000031,"derivative":{"exercise_price":0.0001,"underlying":"Common Stock","underlying_shares":3000031},"source":{"system":"sec-edgar","filing":"0001415889-24-009447","document":"form4-03292024_090355.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000141588924009447/form4-03292024_090355.xml","form_type":"4"}},{"id":1557470,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":19524,"kind":"organization","name":"RA CAPITAL MANAGEMENT, L.P.","position":1,"cik":"0001346824","reported_name":"RA CAPITAL MANAGEMENT, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19525,"kind":"organization","name":"RA Capital Healthcare Fund LP","position":2,"cik":"0001315082","reported_name":"RA Capital Healthcare Fund LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":27507,"kind":"person","name":"RA Capital Nexus Fund, L.P.","position":3,"cik":"0001780117","reported_name":"RA Capital Nexus Fund, L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19526,"kind":"person","name":"Kolchinsky Peter","position":4,"cik":"0001384859","reported_name":"Kolchinsky Peter","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19527,"kind":"person","name":"Shah Rajeev M.","position":5,"cik":"0001619841","reported_name":"Shah Rajeev M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-03-29T21:38:04.000Z","date":"2024-03-27","kind":"purchase","planned":false,"acquired":true,"shares":3000000,"price":10,"value":30000000.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"RA Capital Management, L.P. (the \"Adviser\") is the investment manager for RA Capital Healthcare Fund, L.P. (the \"Fund\") and RA Capital Nexus Fund, L.P. (the \"Nexus Fund\"). The general partner of the Adviser is RA Capital Management GP, LLC (the \"Adviser GP\"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Held directly by the Fund."}],"balance_after":10050818,"source":{"system":"sec-edgar","filing":"0001415889-24-009447","document":"form4-03292024_090355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315082/000141588924009447/form4-03292024_090355.xml","form_type":"4"}},{"id":1558208,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39164,"kind":"person","name":"George Simeon","position":1,"cik":"0001595117","reported_name":"George Simeon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-03-28T20:30:06.000Z","date":"2024-03-27","kind":"purchase","planned":false,"acquired":true,"shares":451659,"price":10,"value":4516590.0,"ownership":{"direct":false,"nature":"See Note 3"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reports the purchase of shares in the underwritten public offering of common stock of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The Reporting Person is the sole managing member of SR One Capital Management, which is the sole general partner of SR One Capital Partners II, LP (\"SR One Partners II\"). SR One Partners II is the sole general partner of SR One Capital Fund II Aggregator, LP (\"SR One Fund II Aggregator\"), which is the direct beneficial owner of the securities. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended (\"Section 16\"), or otherwise of such portion of the securities held by SR One Fund II Aggregator in which the Reporting Person has no pecuniary interest."}],"balance_after":451659,"source":{"system":"sec-edgar","filing":"0000950170-24-038089","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1595117/000095017024038089/ownership.xml","form_type":"4"}},{"id":1558207,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39164,"kind":"person","name":"George Simeon","position":1,"cik":"0001595117","reported_name":"George Simeon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-03-28T20:30:06.000Z","date":"2024-03-27","kind":"purchase","planned":false,"acquired":true,"shares":1548341,"price":10,"value":15483410.0,"ownership":{"direct":false,"nature":"See Note 2"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reports the purchase of shares in the underwritten public offering of common stock of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The Reporting Person is the sole managing member of SR One Capital Management, LLC (\"SR One Capital Management\"), which is the sole general partner of SR One Capital Opportunities Partners I, LP (\"SR One Opportunities Partners I\"). SR One Opportunities Partners I is the sole general partner of SR One Capital Opportunities Fund I, LP (\"SR One Opportunities Fund I\"), which is the direct beneficial owner of the securities. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Opportunities Fund I in which the Reporting Person has no pecuniary interest."}],"balance_after":1548341,"source":{"system":"sec-edgar","filing":"0000950170-24-038089","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1595117/000095017024038089/ownership.xml","form_type":"4"}},{"id":1594903,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-05T21:33:51.000Z","date":"2024-03-04","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":137642,"price":13.33,"value":1834767.86,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on June 27, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $13.00 to $13.85. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":240507,"source":{"system":"sec-edgar","filing":"0000950170-24-026055","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000095017024026055/ownership.xml","form_type":"4"}},{"id":1594902,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-05T21:33:51.000Z","date":"2024-03-01","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":12358,"price":13,"value":160654.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on June 27, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $13.00 to $13.01. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":378149,"source":{"system":"sec-edgar","filing":"0000950170-24-026055","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000095017024026055/ownership.xml","form_type":"4"}},{"id":1597273,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Stock Option (right to buy)","published_at":"2024-03-05T16:26:27.000Z","date":"2024-03-01","kind":"exercise","planned":false,"acquired":false,"shares":2955,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on September 2, 2022."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The options exercised were fully vested. Unvested options will vest and become exercisable ratably in monthly installments until fully vested on July 1, 2024."}],"balance_after":25629,"derivative":{"exercise_price":3.89,"expiration_date":"2029-09-05","underlying":"Common Stock","underlying_shares":2955},"source":{"system":"sec-edgar","filing":"0000950170-24-026001","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1853197/000095017024026001/ownership.xml","form_type":"4"}},{"id":1597272,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Stock Option (right to buy)","published_at":"2024-03-05T16:26:27.000Z","date":"2024-03-01","kind":"exercise","planned":false,"acquired":false,"shares":3808,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on September 2, 2022."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options exercised were fully vested."}],"balance_after":22445,"derivative":{"exercise_price":3.89,"expiration_date":"2029-09-05","underlying":"Common Stock","underlying_shares":3808},"source":{"system":"sec-edgar","filing":"0000950170-24-026001","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1853197/000095017024026001/ownership.xml","form_type":"4"}},{"id":1597271,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Common Stock","published_at":"2024-03-05T16:26:27.000Z","date":"2024-03-01","kind":"sale","planned":false,"acquired":false,"shares":8367,"price":12.51,"value":104671.17,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on September 2, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $12.50 to $12.58. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":79972,"source":{"system":"sec-edgar","filing":"0000950170-24-026001","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1853197/000095017024026001/ownership.xml","form_type":"4"}},{"id":1597270,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Common Stock","published_at":"2024-03-05T16:26:27.000Z","date":"2024-03-01","kind":"exercise","planned":false,"acquired":true,"shares":2955,"price":3.89,"value":11494.95,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on September 2, 2022."}],"balance_after":88339,"source":{"system":"sec-edgar","filing":"0000950170-24-026001","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1853197/000095017024026001/ownership.xml","form_type":"4"}},{"id":1597269,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Common Stock","published_at":"2024-03-05T16:26:27.000Z","date":"2024-03-01","kind":"exercise","planned":false,"acquired":true,"shares":3808,"price":3.89,"value":14813.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on September 2, 2022."}],"balance_after":85384,"source":{"system":"sec-edgar","filing":"0000950170-24-026001","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1853197/000095017024026001/ownership.xml","form_type":"4"}},{"id":1643375,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":89723,"kind":"person","name":"Trager James","position":1,"cik":"0001816549","reported_name":"Trager James","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-02-14T21:12:29.000Z","date":"2024-02-12","kind":"sale","planned":false,"acquired":false,"shares":4143,"price":12,"value":49716.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person and most recently amended on June 22, 2022."}],"balance_after":149415,"source":{"system":"sec-edgar","filing":"0000950170-24-015564","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816549/000095017024015564/ownership.xml","form_type":"4"}},{"id":1676668,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39325,"kind":"person","name":"Shook David","position":1,"cik":"0001959742","reported_name":"Shook David","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2024-01-18T21:45:10.000Z","date":"2024-01-16","kind":"sale","planned":false,"acquired":false,"shares":3552,"price":8.74,"value":31044.48,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $8.74 to $8.96. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":114980,"source":{"system":"sec-edgar","filing":"0000950170-24-005431","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1959742/000095017024005431/ownership.xml","form_type":"4"}},{"id":1676131,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":36279,"kind":"person","name":"HASTINGS PAUL J","position":1,"cik":"0001309702","reported_name":"HASTINGS PAUL J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-01-18T21:40:06.000Z","date":"2024-01-16","kind":"sale","planned":false,"acquired":false,"shares":9697,"price":8.74,"value":84751.78,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $8.74 to $8.96. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":390507,"source":{"system":"sec-edgar","filing":"0000950170-24-005426","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1309702/000095017024005426/ownership.xml","form_type":"4"}},{"id":1676512,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":89723,"kind":"person","name":"Trager James","position":1,"cik":"0001816549","reported_name":"Trager James","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2024-01-18T16:43:20.000Z","date":"2024-01-16","kind":"sale","planned":false,"acquired":false,"shares":4560,"price":8.74,"value":39854.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $8.74 to $8.96. The price reported above reflects the weighted average price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":153558,"source":{"system":"sec-edgar","filing":"0000950170-24-005429","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1816549/000095017024005429/ownership.xml","form_type":"4"}},{"id":1676555,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":84052,"kind":"person","name":"Brandenberger Ralph","position":1,"cik":"0001853197","reported_name":"Brandenberger Ralph","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technical Officer"}}],"security":"Common Stock","published_at":"2024-01-18T16:40:51.000Z","date":"2024-01-16","kind":"sale","planned":false,"acquired":false,"shares":2512,"price":8.74,"value":21954.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $8.74 to $8.96. The price reported above reflects the weighted average price. 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