{"transactions":[{"id":4640184,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":183936,"kind":"person","name":"Myers Robert Paul","position":1,"cik":"0002155916","reported_name":"Myers Robert Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Restricted Stock Units","published_at":"2026-10-14T20:06:52.000Z","date":"2026-10-09","kind":"grant","planned":false,"acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"1/3rd of the shares subject to the restricted stock units shall vest on each anniversary of September 21, 2026 (the \"Vesting Commencement Date\"), such that the entire award will be vested on the three-year anniversary of the Vesting Commencement Date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"1/3rd of the shares subject to the restricted stock units shall vest on each anniversary of September 21, 2026 (the \"Vesting Commencement Date\"), such that the entire award will be vested on the three-year anniversary of the Vesting Commencement Date."}],"balance_after":25000,"derivative":{"underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0002155916-26-000004","document":"form4-10142026_081046.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2155916/000215591626000004/form4-10142026_081046.xml","form_type":"4"}},{"id":4640183,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":183936,"kind":"person","name":"Myers Robert Paul","position":1,"cik":"0002155916","reported_name":"Myers Robert Paul","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-10-14T20:06:52.000Z","date":"2026-10-09","kind":"grant","planned":false,"acquired":true,"shares":40000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"1/4th of the shares vest one year after September 21, 2026 (the \"Vesting Commencement Date\") and the balance of the shares vest in a series of 36 successive equal monthly installments measured from the first anniversary of the Vesting Commencement Date."}],"balance_after":40000,"derivative":{"exercise_price":86.01,"expiration_date":"2036-10-08","underlying":"Common Stock","underlying_shares":40000},"source":{"system":"sec-edgar","filing":"0002155916-26-000004","document":"form4-10142026_081046.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2155916/000215591626000004/form4-10142026_081046.xml","form_type":"4"}},{"id":4636651,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-10-07T00:38:23.000Z","date":"2026-10-06","kind":"exercise","planned":false,"acquired":false,"shares":6892,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option is fully vested."}],"balance_after":233108,"derivative":{"exercise_price":15.87,"expiration_date":"2032-01-05","underlying":"Common Stock","underlying_shares":6892},"source":{"system":"sec-edgar","filing":"0001614740-26-000014","document":"form4-10072026_121019.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000014/form4-10072026_121019.xml","form_type":"4"}},{"id":4636650,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-10-07T00:38:23.000Z","date":"2026-10-06","kind":"exercise","planned":false,"acquired":false,"shares":5305,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option is fully vested."}],"balance_after":169695,"derivative":{"exercise_price":19.19,"expiration_date":"2031-01-06","underlying":"Common Stock","underlying_shares":5305},"source":{"system":"sec-edgar","filing":"0001614740-26-000014","document":"form4-10072026_121019.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000014/form4-10072026_121019.xml","form_type":"4"}},{"id":4636649,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-10-07T00:38:23.000Z","date":"2026-10-06","kind":"exercise","planned":false,"acquired":true,"shares":6892,"price":15.87,"value":109376.04,"ownership":{"direct":true},"balance_after":206637,"source":{"system":"sec-edgar","filing":"0001614740-26-000014","document":"form4-10072026_121019.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000014/form4-10072026_121019.xml","form_type":"4"}},{"id":4636648,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-10-07T00:38:23.000Z","date":"2026-10-06","kind":"exercise","planned":false,"acquired":true,"shares":5305,"price":19.19,"value":101802.95,"ownership":{"direct":true},"balance_after":199745,"source":{"system":"sec-edgar","filing":"0001614740-26-000014","document":"form4-10072026_121019.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000014/form4-10072026_121019.xml","form_type":"4"}},{"id":4617864,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Restricted Stock Units","published_at":"2026-09-15T20:10:07.000Z","date":"2026-09-11","kind":"exercise","planned":false,"acquired":false,"shares":18333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in a series of three successive equal annual installments beginning on the one-year anniversary of September 11, 2023."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in a series of three successive equal annual installments beginning on the one-year anniversary of September 11, 2023."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":18333},"source":{"system":"sec-edgar","filing":"0001197350-26-000010","document":"form4-09152026_040901.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000010/form4-09152026_040901.xml","form_type":"4"}},{"id":4617863,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-09-15T20:10:07.000Z","date":"2026-09-14","kind":"sale","planned":false,"acquired":false,"shares":9943,"price":98.37,"value":978092.91,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to cover tax withholding obligations associated with the vesting of restricted stock units."}],"balance_after":44745,"source":{"system":"sec-edgar","filing":"0001197350-26-000010","document":"form4-09152026_040901.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000010/form4-09152026_040901.xml","form_type":"4"}},{"id":4617862,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-09-15T20:10:07.000Z","date":"2026-09-11","kind":"exercise","planned":false,"acquired":true,"shares":18333,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."}],"balance_after":54688,"source":{"system":"sec-edgar","filing":"0001197350-26-000010","document":"form4-09152026_040901.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000010/form4-09152026_040901.xml","form_type":"4"}},{"id":3519,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-09-03T22:54:17.000Z","date":"2026-09-02","kind":"sale","planned":true,"acquired":false,"shares":658,"price":100,"value":65800.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 18, 2026."}],"balance_after":616,"source":{"system":"sec-edgar","filing":"0001974200-26-000013","document":"form4-09032026_100913.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000013/form4-09032026_100913.xml","form_type":"4"}},{"id":3518,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-09-03T22:52:58.000Z","date":"2026-09-01","kind":"exercise","planned":true,"acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The stock option is fully vested."}],"balance_after":58487,"derivative":{"exercise_price":2.936,"expiration_date":"2029-03-11","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001614740-26-000013","document":"form4-09032026_100954.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000013/form4-09032026_100954.xml","form_type":"4"}},{"id":3517,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-09-03T22:52:58.000Z","date":"2026-09-01","kind":"sale","planned":true,"acquired":false,"shares":21688,"price":98.91,"value":2145160.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The weighted average sale price for the transaction reported was $98.91, and the range of prices were between $98.49 and $99.38. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":194440,"source":{"system":"sec-edgar","filing":"0001614740-26-000013","document":"form4-09032026_100954.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000013/form4-09032026_100954.xml","form_type":"4"}},{"id":3516,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-09-03T22:52:58.000Z","date":"2026-09-01","kind":"sale","planned":true,"acquired":false,"shares":8312,"price":98.08,"value":815240.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The weighted average sale price for the transaction reported was $98.08, and the range of prices were between $97.47 and $98.42. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":216128,"source":{"system":"sec-edgar","filing":"0001614740-26-000013","document":"form4-09032026_100954.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000013/form4-09032026_100954.xml","form_type":"4"}},{"id":3515,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-09-03T22:52:58.000Z","date":"2026-09-01","kind":"exercise","planned":true,"acquired":true,"shares":30000,"price":2.936,"value":88080.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 131 shares of Common Stock that were acquired by the Reporting Person on May 10, 2026, pursuant to the Issuer's Employee Stock Purchase Plan."}],"balance_after":224440,"source":{"system":"sec-edgar","filing":"0001614740-26-000013","document":"form4-09032026_100954.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000013/form4-09032026_100954.xml","form_type":"4"}},{"id":681675,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-08-19T22:19:30.000Z","date":"2026-08-18","kind":"exercise","planned":false,"acquired":false,"shares":40000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option is fully vested."}],"balance_after":0,"derivative":{"exercise_price":6.27,"expiration_date":"2029-05-13","underlying":"Common Stock","underlying_shares":40000},"source":{"system":"sec-edgar","filing":"0001974200-26-000012","document":"form4-08192026_100826.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000012/form4-08192026_100826.xml","form_type":"4"}},{"id":681674,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-08-19T22:19:30.000Z","date":"2026-08-18","kind":"sale","planned":false,"acquired":false,"shares":40000,"price":100,"value":4000000.0,"ownership":{"direct":true},"balance_after":1274,"source":{"system":"sec-edgar","filing":"0001974200-26-000012","document":"form4-08192026_100826.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000012/form4-08192026_100826.xml","form_type":"4"}},{"id":681673,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-08-19T22:19:30.000Z","date":"2026-08-18","kind":"exercise","planned":false,"acquired":true,"shares":40000,"price":6.27,"value":250800.0,"ownership":{"direct":true},"balance_after":41274,"source":{"system":"sec-edgar","filing":"0001974200-26-000012","document":"form4-08192026_100826.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000012/form4-08192026_100826.xml","form_type":"4"}},{"id":689314,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-08-12T21:14:43.000Z","date":"2026-08-11","kind":"sale","planned":true,"acquired":false,"shares":6001,"price":99.9016,"value":599509.5016,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":". The weighted average sale price for the transaction reported was $99.901633, and the range of prices were between $99.90 and $99.93. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 175 shares of common stock that were acquired by the Reporting Person on May 10, 2026, pursuant to the Issuer's Employee Stock Purchase Plan."}],"balance_after":36355,"source":{"system":"sec-edgar","filing":"0001197350-26-000009","document":"form4-08122026_090835.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000009/form4-08122026_090835.xml","form_type":"4"}},{"id":690846,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-08-11T21:41:43.000Z","date":"2026-08-10","kind":"exercise","planned":true,"acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The stock option is fully vested."}],"balance_after":88487,"derivative":{"exercise_price":2.936,"expiration_date":"2029-03-11","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001614740-26-000012","document":"form4-08112026_090838.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000012/form4-08112026_090838.xml","form_type":"4"}},{"id":690845,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-08-11T21:41:43.000Z","date":"2026-08-10","kind":"sale","planned":true,"acquired":false,"shares":2300,"price":100.14,"value":230322.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The weighted average sale price for the transaction reported was $100.14, and the range of prices were between $99.995 and $100.2425. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":194309,"source":{"system":"sec-edgar","filing":"0001614740-26-000012","document":"form4-08112026_090838.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000012/form4-08112026_090838.xml","form_type":"4"}},{"id":690844,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-08-11T21:41:43.000Z","date":"2026-08-10","kind":"sale","planned":true,"acquired":false,"shares":6017,"price":99.25,"value":597187.25,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The weighted average sale price for the transaction reported was $99.25, and the range of prices were between $98.94 and $99.655. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":196609,"source":{"system":"sec-edgar","filing":"0001614740-26-000012","document":"form4-08112026_090838.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000012/form4-08112026_090838.xml","form_type":"4"}},{"id":690843,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-08-11T21:41:43.000Z","date":"2026-08-10","kind":"sale","planned":true,"acquired":false,"shares":11683,"price":98.51,"value":1150892.33,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The weighted average sale price for the transaction reported was $98.51, and the range of prices were between $97.93 and $98.92. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":202626,"source":{"system":"sec-edgar","filing":"0001614740-26-000012","document":"form4-08112026_090838.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000012/form4-08112026_090838.xml","form_type":"4"}},{"id":690842,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-08-11T21:41:43.000Z","date":"2026-08-10","kind":"exercise","planned":true,"acquired":true,"shares":20000,"price":2.936,"value":58720.0,"ownership":{"direct":true},"balance_after":214309,"source":{"system":"sec-edgar","filing":"0001614740-26-000012","document":"form4-08112026_090838.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000012/form4-08112026_090838.xml","form_type":"4"}},{"id":695929,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-08-05T20:26:50.000Z","date":"2026-08-03","kind":"sale","planned":true,"acquired":false,"shares":1840,"price":105.29,"value":193733.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 18, 2026."}],"balance_after":1274,"source":{"system":"sec-edgar","filing":"0001974200-26-000011","document":"form4-08052026_080847.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000011/form4-08052026_080847.xml","form_type":"4"}},{"id":712675,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-07-08T21:12:48.000Z","date":"2026-07-06","kind":"exercise","planned":true,"acquired":false,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The stock option is fully vested."}],"balance_after":108487,"derivative":{"exercise_price":2.936,"expiration_date":"2029-03-11","underlying":"Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001614740-26-000011","document":"form4-07082026_090744.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000011/form4-07082026_090744.xml","form_type":"4"}},{"id":712674,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:12:48.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":1710,"price":124.79,"value":213390.9,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The weighted average sale price for the transaction reported was $124.79, and the range of prices were between $124.27 and $124.94. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":194309,"source":{"system":"sec-edgar","filing":"0001614740-26-000011","document":"form4-07082026_090744.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000011/form4-07082026_090744.xml","form_type":"4"}},{"id":712673,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:12:48.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":1975,"price":123.74,"value":244386.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The weighted average sale price for the transaction reported was $123.74, and the range of prices were between $123.24 and $124.10. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":196019,"source":{"system":"sec-edgar","filing":"0001614740-26-000011","document":"form4-07082026_090744.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000011/form4-07082026_090744.xml","form_type":"4"}},{"id":712672,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:12:48.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":4181,"price":122.34,"value":511503.54,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The weighted average sale price for the transaction reported was $122.34, and the range of prices were between $122.13 and $123.1125. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":197994,"source":{"system":"sec-edgar","filing":"0001614740-26-000011","document":"form4-07082026_090744.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000011/form4-07082026_090744.xml","form_type":"4"}},{"id":712671,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:12:48.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":12134,"price":121.65,"value":1476101.1,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The weighted average sale price for the transaction reported was $121.65, and the range of prices were between $121.11 and $122.105. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":202175,"source":{"system":"sec-edgar","filing":"0001614740-26-000011","document":"form4-07082026_090744.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000011/form4-07082026_090744.xml","form_type":"4"}},{"id":712670,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:12:48.000Z","date":"2026-07-06","kind":"exercise","planned":true,"acquired":true,"shares":20000,"price":2.936,"value":58720.0,"ownership":{"direct":true},"balance_after":214309,"source":{"system":"sec-edgar","filing":"0001614740-26-000011","document":"form4-07082026_090744.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000011/form4-07082026_090744.xml","form_type":"4"}},{"id":712669,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:07:31.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":300,"price":124.94,"value":37482.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."}],"balance_after":42181,"source":{"system":"sec-edgar","filing":"0001197350-26-000008","document":"form4-07082026_090727.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000008/form4-07082026_090727.xml","form_type":"4"}},{"id":712668,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:07:31.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":528,"price":123.84,"value":65387.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":". The weighted average sale price for the transaction reported was $123.84, and the range of prices were between $123.285 and $124.27. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":42481,"source":{"system":"sec-edgar","filing":"0001197350-26-000008","document":"form4-07082026_090727.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000008/form4-07082026_090727.xml","form_type":"4"}},{"id":712667,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:07:31.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":1048,"price":122.43,"value":128306.64,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":". The weighted average sale price for the transaction reported was $122.43, and the range of prices were between $122.235 and $123.10. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":43009,"source":{"system":"sec-edgar","filing":"0001197350-26-000008","document":"form4-07082026_090727.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000008/form4-07082026_090727.xml","form_type":"4"}},{"id":712666,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-07-08T21:07:31.000Z","date":"2026-07-06","kind":"sale","planned":true,"acquired":false,"shares":3124,"price":121.67,"value":380097.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":". The weighted average sale price for the transaction reported was $121.67, and the range of prices were between $121.13 and $122.13. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":44057,"source":{"system":"sec-edgar","filing":"0001197350-26-000008","document":"form4-07082026_090727.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000008/form4-07082026_090727.xml","form_type":"4"}},{"id":718507,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-07-02T22:01:00.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":2721,"price":120,"value":326520.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 18, 2026."}],"balance_after":3114,"source":{"system":"sec-edgar","filing":"0001974200-26-000010","document":"form4-07022026_100751.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000010/form4-07022026_100751.xml","form_type":"4"}},{"id":732362,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-06-18T22:39:42.000Z","date":"2026-06-17","kind":"sale","planned":true,"acquired":false,"shares":2594,"price":101.95,"value":264458.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 18, 2026."}],"balance_after":5835,"source":{"system":"sec-edgar","filing":"0001974200-26-000009","document":"form4-06182026_100638.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000009/form4-06182026_100638.xml","form_type":"4"}},{"id":734201,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":25937,"kind":"person","name":"Walbert Timothy P","position":1,"cik":"0001349376","reported_name":"Walbert Timothy P","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-18T00:30:23.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001349376-26-000004","document":"form4-06172026_080620.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000134937626000004/form4-06172026_080620.xml","form_type":"4"}},{"id":734200,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":25937,"kind":"person","name":"Walbert Timothy P","position":1,"cik":"0001349376","reported_name":"Walbert Timothy P","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:23.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001349376-26-000004","document":"form4-06172026_080620.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000134937626000004/form4-06172026_080620.xml","form_type":"4"}},{"id":734307,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37296,"kind":"person","name":"Cardon Lon","position":1,"cik":"0001854337","reported_name":"Cardon Lon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-18T00:30:22.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001854337-26-000004","document":"form4-06172026_080618.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1854337/000185433726000004/form4-06172026_080618.xml","form_type":"4"}},{"id":734306,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37296,"kind":"person","name":"Cardon Lon","position":1,"cik":"0001854337","reported_name":"Cardon Lon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:22.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001854337-26-000004","document":"form4-06172026_080618.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1854337/000185433726000004/form4-06172026_080618.xml","form_type":"4"}},{"id":734197,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-18T00:30:20.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001547959-26-000016","document":"form4-06172026_080616.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000016/form4-06172026_080616.xml","form_type":"4"}},{"id":734196,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:20.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001547959-26-000016","document":"form4-06172026_080616.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000016/form4-06172026_080616.xml","form_type":"4"}},{"id":734199,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37278,"kind":"person","name":"Fairey William","position":1,"cik":"0001727275","reported_name":"Fairey William","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2026-06-18T00:30:18.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001727275-26-000004","document":"form4-06172026_080609.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000172727526000004/form4-06172026_080609.xml","form_type":"4"}},{"id":734198,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37278,"kind":"person","name":"Fairey William","position":1,"cik":"0001727275","reported_name":"Fairey William","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:18.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001727275-26-000004","document":"form4-06172026_080609.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000172727526000004/form4-06172026_080609.xml","form_type":"4"}},{"id":734195,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37268,"kind":"person","name":"Brege Laura","position":1,"cik":"0001365619","reported_name":"Brege Laura","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2026-06-18T00:30:12.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001365619-26-000005","document":"form4-06172026_080608.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000136561926000005/form4-06172026_080608.xml","form_type":"4"}},{"id":734194,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37268,"kind":"person","name":"Brege Laura","position":1,"cik":"0001365619","reported_name":"Brege Laura","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:12.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001365619-26-000005","document":"form4-06172026_080608.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000136561926000005/form4-06172026_080608.xml","form_type":"4"}},{"id":734193,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37276,"kind":"person","name":"Heron Patrick J","position":1,"cik":"0001365617","reported_name":"Heron Patrick J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2026-06-18T00:30:10.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001365617-26-000004","document":"form4-06172026_080605.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000136561726000004/form4-06172026_080605.xml","form_type":"4"}},{"id":734192,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37276,"kind":"person","name":"Heron Patrick J","position":1,"cik":"0001365617","reported_name":"Heron Patrick J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:10.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001365617-26-000004","document":"form4-06172026_080605.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000136561726000004/form4-06172026_080605.xml","form_type":"4"}},{"id":734191,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37275,"kind":"person","name":"Fischer Laurent","position":1,"cik":"0001379344","reported_name":"Fischer Laurent","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Deferred Stock Units","published_at":"2026-06-18T00:30:07.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each deferred stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting. Each vested deferred stock unit will be paid out in the Issuer's common stock upon the earliest to occur of (i) a change in control of the Issuer and (ii) within 60 days following separation from service with the Issuer."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001379344-26-000005","document":"form4-06172026_080603.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000137934426000005/form4-06172026_080603.xml","form_type":"4"}},{"id":734190,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37275,"kind":"person","name":"Fischer Laurent","position":1,"cik":"0001379344","reported_name":"Fischer Laurent","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:07.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001379344-26-000005","document":"form4-06172026_080603.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000137934426000005/form4-06172026_080603.xml","form_type":"4"}},{"id":734189,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24548,"kind":"person","name":"GREY MICHAEL G","position":1,"cik":"0001240122","reported_name":"GREY MICHAEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-18T00:30:06.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":1980,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and will vest on the first anniversary of the grant date, provided that it will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":1980,"derivative":{"underlying":"Common Stock","underlying_shares":1980},"source":{"system":"sec-edgar","filing":"0001240122-26-000005","document":"form4-06172026_080601.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000124012226000005/form4-06172026_080601.xml","form_type":"4"}},{"id":734188,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24548,"kind":"person","name":"GREY MICHAEL G","position":1,"cik":"0001240122","reported_name":"GREY MICHAEL G","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-18T00:30:06.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3772,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares vest on the first anniversary of the grant date, provided that the option will in any case be fully vested on the date of the Issuer's 2027 annual stockholder meeting."}],"balance_after":3772,"derivative":{"exercise_price":101,"expiration_date":"2036-06-14","underlying":"Common Stock","underlying_shares":3772},"source":{"system":"sec-edgar","filing":"0001240122-26-000005","document":"form4-06172026_080601.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000124012226000005/form4-06172026_080601.xml","form_type":"4"}},{"id":744707,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-06-10T01:21:05.000Z","date":"2026-06-09","kind":"exercise","planned":true,"acquired":false,"shares":2393,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"1/4th of the shares vested one year after January 23, 2024 (the \"Vesting Commencement Date\") and the balance of the shares vest in a series of 36 successive equal monthly installments measured from the first anniversary of the Vesting Commencement Date."}],"balance_after":26653,"derivative":{"exercise_price":26.49,"expiration_date":"2034-01-22","underlying":"Common Stock","underlying_shares":2393},"source":{"system":"sec-edgar","filing":"0001197350-26-000007","document":"form4-06102026_010600.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000007/form4-06102026_010600.xml","form_type":"4"}},{"id":744706,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-06-10T01:21:05.000Z","date":"2026-06-09","kind":"exercise","planned":true,"acquired":true,"shares":2393,"price":26.49,"value":63390.57,"ownership":{"direct":true},"balance_after":47181,"source":{"system":"sec-edgar","filing":"0001197350-26-000007","document":"form4-06102026_010600.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000007/form4-06102026_010600.xml","form_type":"4"}},{"id":744705,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-06-10T01:21:05.000Z","date":"2026-06-08","kind":"sale","planned":true,"acquired":false,"shares":1567,"price":95.12,"value":149053.04,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":". The weighted average sale price for the transaction reported was $95.12, and the range of prices were between $94.62 and $95.44. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":44788,"source":{"system":"sec-edgar","filing":"0001197350-26-000007","document":"form4-06102026_010600.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000007/form4-06102026_010600.xml","form_type":"4"}},{"id":744704,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-06-10T01:21:05.000Z","date":"2026-06-08","kind":"sale","planned":true,"acquired":false,"shares":1175,"price":93.95,"value":110391.25,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":". The weighted average sale price for the transaction reported was $93.95, and the range of prices were between $93.49 and $94.47. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":46355,"source":{"system":"sec-edgar","filing":"0001197350-26-000007","document":"form4-06102026_010600.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000007/form4-06102026_010600.xml","form_type":"4"}},{"id":744703,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-06-10T01:21:05.000Z","date":"2026-06-08","kind":"sale","planned":true,"acquired":false,"shares":2258,"price":92.84,"value":209632.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 9, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":". The weighted average sale price for the transaction reported was $92.84, and the range of prices were between $92.485 and $93.31. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":47530,"source":{"system":"sec-edgar","filing":"0001197350-26-000007","document":"form4-06102026_010600.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000007/form4-06102026_010600.xml","form_type":"4"}},{"id":746303,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Stock Option (right to buy)","published_at":"2026-06-08T20:27:32.000Z","date":"2026-06-05","kind":"exercise","planned":false,"acquired":false,"shares":16988,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option is fully vested."}],"balance_after":48012,"derivative":{"exercise_price":19.19,"expiration_date":"2031-01-06","underlying":"Common Stock","underlying_shares":16988},"source":{"system":"sec-edgar","filing":"0001650131-26-000011","document":"form4-06082026_080628.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000011/form4-06082026_080628.xml","form_type":"4"}},{"id":746302,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Common Stock","published_at":"2026-06-08T20:27:32.000Z","date":"2026-06-05","kind":"exercise","planned":false,"acquired":true,"shares":16988,"price":19.19,"value":325999.72,"ownership":{"direct":true},"balance_after":57260,"source":{"system":"sec-edgar","filing":"0001650131-26-000011","document":"form4-06082026_080628.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000011/form4-06082026_080628.xml","form_type":"4"}},{"id":754919,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Employee Stock Option (right to buy)","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"exercise","planned":true,"acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The stock option is fully vested."}],"balance_after":128487,"derivative":{"exercise_price":2.936,"expiration_date":"2029-03-11","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754918,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":883,"price":99.66,"value":87999.78,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The weighted average sale price for the transaction reported was $99.66, and the range of prices were between $99.55 and $99.79. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":194309,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754917,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":1021,"price":98.2,"value":100262.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The weighted average sale price for the transaction reported was $98.20, and the range of prices were between $98.00 and $98.38. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":195192,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754916,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":1973,"price":97.56,"value":192485.88,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The weighted average sale price for the transaction reported was $97.56, and the range of prices were between $96.98 and $97.94. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":196213,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754915,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":6926,"price":96.15,"value":665934.9,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The weighted average sale price for the transaction reported was $96.15, and the range of prices were between $95.92 and $96.8675. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":198186,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754914,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":16595,"price":95.34,"value":1582167.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The weighted average sale price for the transaction reported was $95.34, and the range of prices were between $94.91 and $95.91. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":205112,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754913,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":2602,"price":94.64,"value":246253.28,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on March 2, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The weighted average sale price for the transaction reported was $94.64, and the range of prices were between $93.90 and $94.895. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided."}],"balance_after":221707,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754912,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2417,"kind":"person","name":"Peetz Christopher","position":1,"cik":"0001614740","reported_name":"Peetz Christopher","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2026-06-02T23:50:14.000Z","date":"2026-06-01","kind":"exercise","planned":true,"acquired":true,"shares":30000,"price":2.936,"value":88080.0,"ownership":{"direct":true},"balance_after":224309,"source":{"system":"sec-edgar","filing":"0001614740-26-000010","document":"form4-06022026_070609.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000161474026000010/form4-06022026_070609.xml","form_type":"4"}},{"id":754911,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":25937,"kind":"person","name":"Walbert Timothy P","position":1,"cik":"0001349376","reported_name":"Walbert Timothy P","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-02T23:50:12.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":false,"shares":3977,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3977},"source":{"system":"sec-edgar","filing":"0001349376-26-000002","document":"form4-06022026_070607.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000134937626000002/form4-06022026_070607.xml","form_type":"4"}},{"id":754910,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":25937,"kind":"person","name":"Walbert Timothy P","position":1,"cik":"0001349376","reported_name":"Walbert Timothy P","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T23:50:12.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":true,"shares":3977,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."}],"balance_after":9680,"source":{"system":"sec-edgar","filing":"0001349376-26-000002","document":"form4-06022026_070607.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000134937626000002/form4-06022026_070607.xml","form_type":"4"}},{"id":755079,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37296,"kind":"person","name":"Cardon Lon","position":1,"cik":"0001854337","reported_name":"Cardon Lon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-02T23:50:09.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":false,"shares":3977,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3977},"source":{"system":"sec-edgar","filing":"0001854337-26-000002","document":"form4-06022026_070605.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1854337/000185433726000002/form4-06022026_070605.xml","form_type":"4"}},{"id":755078,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37296,"kind":"person","name":"Cardon Lon","position":1,"cik":"0001854337","reported_name":"Cardon Lon","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T23:50:09.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":true,"shares":3977,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."}],"balance_after":9680,"source":{"system":"sec-edgar","filing":"0001854337-26-000002","document":"form4-06022026_070605.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1854337/000185433726000002/form4-06022026_070605.xml","form_type":"4"}},{"id":754909,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-02T23:50:07.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":false,"shares":3977,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3977},"source":{"system":"sec-edgar","filing":"0001547959-26-000011","document":"form4-06022026_070603.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000011/form4-06022026_070603.xml","form_type":"4"}},{"id":754908,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T23:50:07.000Z","date":"2026-06-01","kind":"sale","planned":false,"acquired":false,"shares":3977,"price":100,"value":397700.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on September 18, 2025."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001547959-26-000011","document":"form4-06022026_070603.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000011/form4-06022026_070603.xml","form_type":"4"}},{"id":754907,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T23:50:07.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":true,"shares":3977,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."}],"balance_after":3977,"source":{"system":"sec-edgar","filing":"0001547959-26-000011","document":"form4-06022026_070603.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000011/form4-06022026_070603.xml","form_type":"4"}},{"id":754906,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37275,"kind":"person","name":"Fischer Laurent","position":1,"cik":"0001379344","reported_name":"Fischer Laurent","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-02T23:50:05.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":false,"shares":3977,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock and vests on May 29, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3977},"source":{"system":"sec-edgar","filing":"0001379344-26-000003","document":"form4-06022026_070601.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000137934426000003/form4-06022026_070601.xml","form_type":"4"}},{"id":754905,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37275,"kind":"person","name":"Fischer Laurent","position":1,"cik":"0001379344","reported_name":"Fischer Laurent","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T23:50:05.000Z","date":"2026-05-29","kind":"exercise","planned":false,"acquired":true,"shares":3977,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock (or its cash equivalent, at the discretion of the Issuer)."}],"balance_after":10727,"source":{"system":"sec-edgar","filing":"0001379344-26-000003","document":"form4-06022026_070601.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000137934426000003/form4-06022026_070601.xml","form_type":"4"}},{"id":775115,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-05-19T00:32:36.000Z","date":"2026-05-15","kind":"exercise","planned":true,"acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option is fully vested."}],"balance_after":0,"derivative":{"exercise_price":23.51,"expiration_date":"2032-06-01","underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001547959-26-000009","document":"form4-05192026_120532.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000009/form4-05192026_120532.xml","form_type":"4"}},{"id":775114,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-19T00:32:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":2000,"price":109.47,"value":218940.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on September 18, 2025."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001547959-26-000009","document":"form4-05192026_120532.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000009/form4-05192026_120532.xml","form_type":"4"}},{"id":775113,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-19T00:32:36.000Z","date":"2026-05-15","kind":"exercise","planned":true,"acquired":true,"shares":2000,"price":23.51,"value":47020.0,"ownership":{"direct":true},"balance_after":2000,"source":{"system":"sec-edgar","filing":"0001547959-26-000009","document":"form4-05192026_120532.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000009/form4-05192026_120532.xml","form_type":"4"}},{"id":807124,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-04-17T00:40:23.000Z","date":"2026-04-15","kind":"exercise","planned":true,"acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option is fully vested."}],"balance_after":2000,"derivative":{"exercise_price":23.51,"expiration_date":"2032-06-01","underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001547959-26-000007","document":"form4-04172026_120419.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000007/form4-04172026_120419.xml","form_type":"4"}},{"id":807123,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-04-17T00:40:23.000Z","date":"2026-04-15","kind":"sale","planned":true,"acquired":false,"shares":2000,"price":96.9,"value":193800.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on September 18, 2025."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001547959-26-000007","document":"form4-04172026_120419.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000007/form4-04172026_120419.xml","form_type":"4"}},{"id":807122,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-04-17T00:40:23.000Z","date":"2026-04-15","kind":"exercise","planned":true,"acquired":true,"shares":2000,"price":23.51,"value":47020.0,"ownership":{"direct":true},"balance_after":2000,"source":{"system":"sec-edgar","filing":"0001547959-26-000007","document":"form4-04172026_120419.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000007/form4-04172026_120419.xml","form_type":"4"}},{"id":838104,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Performance Restricted Stock Units","published_at":"2026-03-17T23:30:20.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":false,"shares":13334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."}],"balance_after":6666,"derivative":{"underlying":"Common Stock","underlying_shares":13334},"source":{"system":"sec-edgar","filing":"0001197350-26-000006","document":"form4-03172026_070311.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000006/form4-03172026_070311.xml","form_type":"4"}},{"id":838103,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:20.000Z","date":"2026-03-16","kind":"sale","planned":false,"acquired":false,"shares":7287,"price":91.9779,"value":670242.9573,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to cover tax withholding obligations associated with the vesting of the performance restricted stock units."}],"balance_after":49788,"source":{"system":"sec-edgar","filing":"0001197350-26-000006","document":"form4-03172026_070311.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000006/form4-03172026_070311.xml","form_type":"4"}},{"id":838102,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":24148,"kind":"person","name":"BJERKHOLT ERIC","position":1,"cik":"0001197350","reported_name":"BJERKHOLT ERIC","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF FINANCIAL OFFICER"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:20.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":true,"shares":13334,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."}],"balance_after":57075,"source":{"system":"sec-edgar","filing":"0001197350-26-000006","document":"form4-03172026_070311.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000119735026000006/form4-03172026_070311.xml","form_type":"4"}},{"id":838101,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":59996,"kind":"person","name":"Quan Joanne","position":1,"cik":"0001670138","reported_name":"Quan Joanne","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Performance Restricted Stock Units","published_at":"2026-03-17T23:30:18.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":false,"shares":13334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."}],"balance_after":6666,"derivative":{"underlying":"Common Stock","underlying_shares":13334},"source":{"system":"sec-edgar","filing":"0001670138-26-000005","document":"form4-03172026_070309.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000167013826000005/form4-03172026_070309.xml","form_type":"4"}},{"id":838100,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":59996,"kind":"person","name":"Quan Joanne","position":1,"cik":"0001670138","reported_name":"Quan Joanne","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:18.000Z","date":"2026-03-16","kind":"sale","planned":false,"acquired":false,"shares":7287,"price":91.9779,"value":670242.9573,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to cover tax withholding obligations associated with the vesting of the performance restricted stock units."}],"balance_after":18864,"source":{"system":"sec-edgar","filing":"0001670138-26-000005","document":"form4-03172026_070309.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000167013826000005/form4-03172026_070309.xml","form_type":"4"}},{"id":838099,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":59996,"kind":"person","name":"Quan Joanne","position":1,"cik":"0001670138","reported_name":"Quan Joanne","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF MEDICAL OFFICER"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:18.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":true,"shares":13334,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."}],"balance_after":26151,"source":{"system":"sec-edgar","filing":"0001670138-26-000005","document":"form4-03172026_070309.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000167013826000005/form4-03172026_070309.xml","form_type":"4"}},{"id":838098,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-03-17T23:30:17.000Z","date":"2026-03-16","kind":"exercise","planned":true,"acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option is fully vested."}],"balance_after":4000,"derivative":{"exercise_price":23.51,"expiration_date":"2032-06-01","underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001547959-26-000006","document":"form4-03172026_070313.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000006/form4-03172026_070313.xml","form_type":"4"}},{"id":838097,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-03-17T23:30:17.000Z","date":"2026-03-16","kind":"sale","planned":true,"acquired":false,"shares":2000,"price":90.76,"value":181520.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reported transaction occurred pursuant to a Rule 10b5-1 Plan adopted by the reporting person on September 18, 2025."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001547959-26-000006","document":"form4-03172026_070313.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000006/form4-03172026_070313.xml","form_type":"4"}},{"id":838096,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":37277,"kind":"person","name":"Ramasastry Saira","position":1,"cik":"0001547959","reported_name":"Ramasastry Saira","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-03-17T23:30:17.000Z","date":"2026-03-16","kind":"exercise","planned":true,"acquired":true,"shares":2000,"price":23.51,"value":47020.0,"ownership":{"direct":true},"balance_after":2000,"source":{"system":"sec-edgar","filing":"0001547959-26-000006","document":"form4-03172026_070313.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000154795926000006/form4-03172026_070313.xml","form_type":"4"}},{"id":838095,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Performance Restricted Stock Units","published_at":"2026-03-17T23:30:16.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":false,"shares":23000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."}],"balance_after":11500,"derivative":{"underlying":"Common Stock","underlying_shares":23000},"source":{"system":"sec-edgar","filing":"0001650131-26-000010","document":"form4-03172026_070307.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000010/form4-03172026_070307.xml","form_type":"4"}},{"id":838094,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Performance Restricted Stock Units","published_at":"2026-03-17T23:30:16.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":false,"shares":7220,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The shares vest as follows: 2/3 of the shares vest on March 15, 2025 and 1/3 of the shares vest on March 15, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The shares vest as follows: 2/3 of the shares vest on March 15, 2025 and 1/3 of the shares vest on March 15, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":7220},"source":{"system":"sec-edgar","filing":"0001650131-26-000010","document":"form4-03172026_070307.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000010/form4-03172026_070307.xml","form_type":"4"}},{"id":838093,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:16.000Z","date":"2026-03-16","kind":"sale","planned":false,"acquired":false,"shares":16515,"price":91.9779,"value":1519015.0185,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to cover tax withholding obligations associated with the vesting of the performance restricted stock units."}],"balance_after":40272,"source":{"system":"sec-edgar","filing":"0001650131-26-000010","document":"form4-03172026_070307.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000010/form4-03172026_070307.xml","form_type":"4"}},{"id":838092,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:16.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":true,"shares":23000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."}],"balance_after":56787,"source":{"system":"sec-edgar","filing":"0001650131-26-000010","document":"form4-03172026_070307.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000010/form4-03172026_070307.xml","form_type":"4"}},{"id":838091,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":40502,"kind":"person","name":"Radovich Peter","position":1,"cik":"0001650131","reported_name":"Radovich Peter","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT AND COO"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:16.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":true,"shares":7220,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."}],"balance_after":33787,"source":{"system":"sec-edgar","filing":"0001650131-26-000010","document":"form4-03172026_070307.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1759425/000165013126000010/form4-03172026_070307.xml","form_type":"4"}},{"id":838469,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Performance Restricted Stock Units","published_at":"2026-03-17T23:30:13.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The shares vest as follows:  2/3 of the shares vest on March 15, 2026 and 1/3 of the shares vest on March 15, 2027."}],"balance_after":3000,"derivative":{"underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0001974200-26-000008","document":"form4-03172026_070304.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000008/form4-03172026_070304.xml","form_type":"4"}},{"id":838468,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Performance Restricted Stock Units","published_at":"2026-03-17T23:30:13.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":false,"shares":2658,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The shares vest as follows: 2/3 of the shares vest on March 15, 2025 and 1/3 of the shares vest on March 15, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The shares vest as follows: 2/3 of the shares vest on March 15, 2025 and 1/3 of the shares vest on March 15, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2658},"source":{"system":"sec-edgar","filing":"0001974200-26-000008","document":"form4-03172026_070304.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000008/form4-03172026_070304.xml","form_type":"4"}},{"id":838467,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:13.000Z","date":"2026-03-16","kind":"sale","planned":false,"acquired":false,"shares":4732,"price":91.9779,"value":435239.4228,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Shares sold to cover tax withholding obligations associated with the vesting of the performance restricted stock units."}],"balance_after":8429,"source":{"system":"sec-edgar","filing":"0001974200-26-000008","document":"form4-03172026_070304.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000008/form4-03172026_070304.xml","form_type":"4"}},{"id":838466,"issuer":{"id":2416,"kind":"organization","name":"Mirum Pharmaceuticals, Inc.","symbol":"MIRM"},"owners":[{"id":2418,"kind":"person","name":"Howe Jolanda","position":1,"cik":"0001974200","reported_name":"Howe Jolanda","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, GLOBAL CONTROLLER"}}],"security":"Common Stock","published_at":"2026-03-17T23:30:13.000Z","date":"2026-03-15","kind":"exercise","planned":false,"acquired":true,"shares":6000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each performance restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."}],"balance_after":13161,"source":{"system":"sec-edgar","filing":"0001974200-26-000008","document":"form4-03172026_070304.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1974200/000197420026000008/form4-03172026_070304.xml","form_type":"4"}}],"next_cursor":"2026-03-17T23:30:13.000000Z,838466"}