{"transactions":[{"id":4637423,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":40794,"kind":"person","name":"Partridge Andrew John","position":1,"cik":"0001758838","reported_name":"Partridge Andrew John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Growth Officer"}}],"security":"Common Stock","published_at":"2026-10-07T22:36:29.000Z","date":"2026-10-05","kind":"sale","planned":false,"acquired":false,"shares":7873,"price":146.39,"value":1152528.47,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. The price reported in Column 4 is a weighted average price calculated by the broker executing these transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":155865,"source":{"system":"sec-edgar","filing":"0001628280-26-065365","document":"wk-form4_1791412587.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1758838/000162828026065365/wk-form4_1791412587.xml","form_type":"4"}},{"id":4637422,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-10-07T22:36:21.000Z","date":"2026-10-05","kind":"sale","planned":false,"acquired":false,"shares":23619,"price":146.39,"value":3457585.41,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. The price reported in Column 4 is a weighted average price calculated by the broker executing these transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":225364,"source":{"system":"sec-edgar","filing":"0001628280-26-065364","document":"wk-form4_1791412579.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828026065364/wk-form4_1791412579.xml","form_type":"4"}},{"id":4625504,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:11.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":521,"price":95,"value":49495.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 11, 2025"}],"balance_after":248983,"source":{"system":"sec-edgar","filing":"0001628280-26-063234","document":"wk-form4_1790195828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828026063234/wk-form4_1790195828.xml","form_type":"4"}},{"id":4625503,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:11.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":1800,"price":93.9156,"value":169048.08,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.89 to $94.33 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 11, 2025"}],"balance_after":249504,"source":{"system":"sec-edgar","filing":"0001628280-26-063234","document":"wk-form4_1790195828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828026063234/wk-form4_1790195828.xml","form_type":"4"}},{"id":4625502,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:11.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":1779,"price":92.2631,"value":164136.0549,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.19 to $93.00 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 11, 2025"}],"balance_after":251304,"source":{"system":"sec-edgar","filing":"0001628280-26-063234","document":"wk-form4_1790195828.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828026063234/wk-form4_1790195828.xml","form_type":"4"}},{"id":4625501,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Stock Option","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"exercise","planned":true,"acquired":false,"shares":26452,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"Represents an option originally granted on March 6, 2020 for which the performance condition was determined to be met on November 1, 2024. The option vests and becomes exercisable in thirty-six substantially equal monthly installments beginning December 1, 2024. As of September 21, 2026, approximately 61% of the shares subject to the option had vested, and the remaining approximately 39%  of the shares vests over the remaining period afterwards."}],"balance_after":37032,"derivative":{"exercise_price":14,"expiration_date":"2030-03-05","underlying":"Common Stock","underlying_shares":26452},"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625500,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":10000,"price":110,"value":1100000.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":362271,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625499,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":2100,"price":100.6805,"value":211429.05,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.68 to $100.69 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":372271,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625498,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":421,"price":99.8499,"value":42036.8079,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.42 to $100.28 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":374371,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625497,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":1400,"price":97.8414,"value":136977.96,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.74 to $98.00 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":374792,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625496,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":6200,"price":96.4308,"value":597870.96,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.71 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":376192,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625495,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":37752,"price":94.9828,"value":3585790.6656,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.5 to $95.00 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":382392,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625494,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":1454,"price":93.606,"value":136103.124,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.04 to $93.90 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":420144,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625493,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"sale","planned":true,"acquired":false,"shares":2125,"price":92.3152,"value":196169.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.04 to $92.93 inclusive. The Reporting Person undertakes to\nprovide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales\nprice within the range set forth in this footnote"},{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025"}],"balance_after":421598,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":4625492,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-23T20:37:03.000Z","date":"2026-09-21","kind":"exercise","planned":true,"acquired":true,"shares":26452,"price":14,"value":370328.0,"ownership":{"direct":true},"balance_after":423723,"source":{"system":"sec-edgar","filing":"0001628280-26-063233","document":"wk-form4_1790195820.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1822088/000162828026063233/wk-form4_1790195820.xml","form_type":"4"}},{"id":671812,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-09-01T00:07:27.000Z","date":"2026-08-27","kind":"sale","planned":true,"acquired":false,"shares":5000,"price":85.0196,"value":425098.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.00 to $85.11 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote"}],"balance_after":397271,"source":{"system":"sec-edgar","filing":"0001628280-26-059682","document":"wk-form4_1788221244.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026059682/wk-form4_1788221244.xml","form_type":"4"}},{"id":672135,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-01T00:07:21.000Z","date":"2026-08-27","kind":"sale","planned":true,"acquired":false,"shares":7900,"price":85.01,"value":671579.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.00 to $85.11 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 314 shares acquired under the Company's ESPP purchased on May 14, 2026."}],"balance_after":253083,"source":{"system":"sec-edgar","filing":"0001628280-26-059681","document":"wk-form4_1788221238.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828026059681/wk-form4_1788221238.xml","form_type":"4"}},{"id":708026,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":11965,"kind":"person","name":"CHASE WILLIAM J","position":1,"cik":"0001563572","reported_name":"CHASE WILLIAM J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-07-16T20:43:59.000Z","date":"2026-07-15","kind":"grant","planned":false,"acquired":true,"shares":276,"price":74.36,"value":20523.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 276 deferred stock units granted to Mr. Chase under our deferred stock program and 2024 Equity Incentive Plan in lieu of $20,568.49 of cash fees payable to Mr. Chase for his service as a director, based on a price per share of $74.36, which was the closing price per share of the Company's common stock on July 15, 2026. The awards will vest immediately upon grant date."}],"balance_after":42978,"source":{"system":"sec-edgar","filing":"0001628280-26-048488","document":"wk-form4_1784234637.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1563572/000162828026048488/wk-form4_1784234637.xml","form_type":"4"}},{"id":708291,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":30137,"kind":"person","name":"SUMME GREGORY L","position":1,"cik":"0001143422","reported_name":"SUMME GREGORY L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-07-16T20:43:51.000Z","date":"2026-07-15","kind":"grant","planned":false,"acquired":true,"shares":427,"price":74.36,"value":31751.72,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 427 deferred stock units granted to Mr. Summe under our deferred stock program and 2024 Equity Incentive Plan in lieu of $31,787.67 of cash fees payable to Mr. Summe for his service as a director, based on a price per share of $74.36, which was the closing price per share of the Company's common stock on July 15, 2026. 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The DSUs will vest in full on the earlier to occur of (i) June 18, 2027 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. 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The DSUs will vest in full on the earlier to occur of (i) June 18, 2027 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. 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The DSUs will vest in full on the earlier to occur of (i) June 18, 2027 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. 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The DSUs will vest in full on the earlier to occur of (i) June 18, 2027 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":163738,"source":{"system":"sec-edgar","filing":"0001628280-26-041356","document":"wk-form4_1780704979.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026041356/wk-form4_1780704979.xml","form_type":"4"}},{"id":750770,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-06-04T00:04:09.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":3154,"price":61.13,"value":192804.02,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of restricted stock units (\"RSUs\") which will vest in four substantially equal annual installments, beginning on May 31, 2027, subject to the awardee continuing to be a service provider on such date. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":371216,"source":{"system":"sec-edgar","filing":"0001628280-26-024549","document":"wk-form4_1775775489.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026024549/wk-form4_1775775489.xml","form_type":"4"}},{"id":853928,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-03-10T01:36:07.000Z","date":"2026-03-09","kind":"sale","planned":false,"acquired":false,"shares":85,"price":46.74,"value":3972.9,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":435818,"source":{"system":"sec-edgar","filing":"0001628280-26-016217","document":"wk-form4_1773106558.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026016217/wk-form4_1773106558.xml","form_type":"4"}},{"id":853290,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-10T01:35:55.000Z","date":"2026-03-09","kind":"sale","planned":false,"acquired":false,"shares":258,"price":46.73,"value":12056.34,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":642084,"source":{"system":"sec-edgar","filing":"0001628280-26-016216","document":"wk-form4_1773106552.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828026016216/wk-form4_1773106552.xml","form_type":"4"}},{"id":853289,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-10T01:35:55.000Z","date":"2026-03-09","kind":"sale","planned":false,"acquired":false,"shares":7203,"price":47.93,"value":345239.79,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":642342,"source":{"system":"sec-edgar","filing":"0001628280-26-016216","document":"wk-form4_1773106552.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828026016216/wk-form4_1773106552.xml","form_type":"4"}},{"id":853288,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-10T01:35:55.000Z","date":"2026-03-05","kind":"sale","planned":false,"acquired":false,"shares":980,"price":53.01,"value":51949.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":649545,"source":{"system":"sec-edgar","filing":"0001628280-26-016216","document":"wk-form4_1773106552.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828026016216/wk-form4_1773106552.xml","form_type":"4"}},{"id":864936,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2026-03-04T02:12:33.000Z","date":"2026-03-02","kind":"sale","planned":false,"acquired":false,"shares":16223,"price":50.0853,"value":812533.8219,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. The price reported in Column 4 is a weighted average price calculated by the broker executing these transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":436508,"source":{"system":"sec-edgar","filing":"0001628280-26-014344","document":"wk-form4_1772590351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026014344/wk-form4_1772590351.xml","form_type":"4"}},{"id":864935,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2026-03-04T02:12:33.000Z","date":"2026-03-02","kind":"sale","planned":false,"acquired":false,"shares":779,"price":51.7509,"value":40313.9511,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents automatic 'sell-to-cover' transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":452731,"source":{"system":"sec-edgar","filing":"0001628280-26-014344","document":"wk-form4_1772590351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026014344/wk-form4_1772590351.xml","form_type":"4"}},{"id":864934,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2026-03-04T02:12:33.000Z","date":"2026-02-27","kind":"grant","planned":false,"acquired":true,"shares":84540,"price":53.23,"value":4500064.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of 84,540 restricted stock units (\"RSUs\") which will vest in four substantially equal annual installments, beginning on February 28, 2027, subject to the awardee's continuing to be a service provider on such date. Each RSU represents the right to receive, at settlement, one share of common stock. The RSUs will be settled in common stock upon vesting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Adjusted the reported holdings to include an additional 152 shares of Common Stock, representing dividend shares received in connection with the GRAIL, Inc. spin-off from Illumina, Inc. on June 24. 2024, with respect to shares of Illumina, Inc. held in a separate brokerage account by the Reporting Person and inadvertently omitted."}],"balance_after":453510,"source":{"system":"sec-edgar","filing":"0001628280-26-014344","document":"wk-form4_1772590351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026014344/wk-form4_1772590351.xml","form_type":"4"}},{"id":868740,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-03-04T01:45:54.000Z","date":"2026-03-02","kind":"sale","planned":false,"acquired":false,"shares":438,"price":51.8611,"value":22715.1618,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents automatic sell-to-cover transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. The price reported in Column 4 is a weighted average price calculated by the broker executing these transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":309622,"source":{"system":"sec-edgar","filing":"0001628280-26-014331","document":"wk-form4_1772588751.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828026014331/wk-form4_1772588751.xml","form_type":"4"}},{"id":868739,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-03-04T01:45:54.000Z","date":"2026-03-02","kind":"sale","planned":false,"acquired":false,"shares":9135,"price":50.0853,"value":457529.2155,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents automatic sell-to-cover transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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The awards will vest immediately upon grant date."}],"balance_after":36675,"source":{"system":"sec-edgar","filing":"0001628280-26-002426","document":"wk-form4_1768600539.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1189403/000162828026002426/wk-form4_1768600539.xml","form_type":"4"}},{"id":978650,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2025-12-05T21:12:37.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":13000,"price":100,"value":1300000.0,"ownership":{"direct":true},"balance_after":368818,"source":{"system":"sec-edgar","filing":"0001628280-25-055601","document":"wk-form4_1764969154.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828025055601/wk-form4_1764969154.xml","form_type":"4"}},{"id":978849,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-05T21:12:30.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":1604,"price":97.2831,"value":156042.0924,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.89 to $97.79 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote."}],"balance_after":688029,"source":{"system":"sec-edgar","filing":"0001628280-25-055599","document":"wk-form4_1764969148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828025055599/wk-form4_1764969148.xml","form_type":"4"}},{"id":978848,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-05T21:12:30.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":8233,"price":96.2167,"value":792152.0911,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.88 to $96.82 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote."}],"balance_after":689633,"source":{"system":"sec-edgar","filing":"0001628280-25-055599","document":"wk-form4_1764969148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828025055599/wk-form4_1764969148.xml","form_type":"4"}},{"id":978847,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-05T21:12:30.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":15356,"price":95.2782,"value":1463092.0392,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.79 to $95.7850 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote."}],"balance_after":697866,"source":{"system":"sec-edgar","filing":"0001628280-25-055599","document":"wk-form4_1764969148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828025055599/wk-form4_1764969148.xml","form_type":"4"}},{"id":978846,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-05T21:12:30.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":14807,"price":94.4316,"value":1398248.7012,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.78 to $94.7750 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 641 shares acquired under the Company's ESPP purchased on November 14, 2025."}],"balance_after":713222,"source":{"system":"sec-edgar","filing":"0001628280-25-055599","document":"wk-form4_1764969148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828025055599/wk-form4_1764969148.xml","form_type":"4"}},{"id":979261,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-12-05T21:12:24.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":25000,"price":99.1527,"value":2478817.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.00 to $99.76 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price within the range set forth in this footnote."}],"balance_after":259077,"source":{"system":"sec-edgar","filing":"0001628280-25-055598","document":"wk-form4_1764969141.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828025055598/wk-form4_1764969141.xml","form_type":"4"}},{"id":994168,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-11-19T21:08:16.000Z","date":"2025-11-17","kind":"sale","planned":false,"acquired":false,"shares":1697,"price":79.2,"value":134402.4,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic sell-to-cover transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. The price reported in Column 4 is a weighted average price calculated by the broker executing these transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 641 shares acquired under the Company's ESPP purchased on November 14, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Adjusted to reduce the reported holdings by 10 shares of Common Stock to correct an inadvertent error in Column 4 of the Form 4 filed on August 19, 2025."}],"balance_after":284077,"source":{"system":"sec-edgar","filing":"0001628280-25-053171","document":"wk-form4_1763586493.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000162828025053171/wk-form4_1763586493.xml","form_type":"4"}},{"id":996303,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":3137,"kind":"organization","name":"ILLUMINA, INC.","symbol":"ILMN","position":1,"cik":"0001110803","reported_name":"ILLUMINA, INC.","relationship":{"ten_percent_owner":true}}],"security":"Common stock, par value $0.001 per share","published_at":"2025-11-19T02:33:00.000Z","date":"2025-11-17","kind":"sale","planned":false,"acquired":false,"shares":1000000,"price":79.85,"value":79850000.0,"ownership":{"direct":true},"balance_after":3502126,"source":{"system":"sec-edgar","filing":"0000950157-25-000953","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1110803/000095015725000953/form4.xml","form_type":"4"}},{"id":1017492,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":1792,"kind":"person","name":"RAGUSA ROBERT P","position":1,"cik":"0001222644","reported_name":"RAGUSA ROBERT P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-16T22:18:02.000Z","date":"2025-10-15","kind":"sale","planned":false,"acquired":false,"shares":7239,"price":68.88,"value":498622.32,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents automatic sell-to-cover transactions by an executing broker to cover withholding taxes upon award vesting and share delivery. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":727388,"source":{"system":"sec-edgar","filing":"0001628280-25-045269","document":"wk-form4_1760653079.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1222644/000162828025045269/wk-form4_1760653079.xml","form_type":"4"}},{"id":1017484,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":11446,"kind":"person","name":"MIZELL STEVEN","position":1,"cik":"0001189403","reported_name":"MIZELL STEVEN","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-10-16T22:17:56.000Z","date":"2025-10-15","kind":"grant","planned":false,"acquired":true,"shares":267,"price":75.52,"value":20163.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 267 deferred stock units granted to Mr. Mizell under our deferred stock program and 2024 Equity Incentive Plan in lieu of $20,164.38 of cash fees payable to Mr. Mizell for his service as a director, based on a price per share of $75.52, which was the closing price per share of the Company's common stock on October 15, 2025. 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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":396797,"source":{"system":"sec-edgar","filing":"0001628280-25-044600","document":"wk-form4_1759954447.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828025044600/wk-form4_1759954447.xml","form_type":"4"}},{"id":1024005,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2025-10-03T23:01:29.000Z","date":"2025-10-02","kind":"sale","planned":true,"acquired":false,"shares":9692,"price":64.0025,"value":620312.23,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on March 13, 2025"}],"balance_after":478182,"source":{"system":"sec-edgar","filing":"0001628280-25-044196","document":"wk-form4_1759532487.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828025044196/wk-form4_1759532487.xml","form_type":"4"}},{"id":1059896,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2025-08-20T20:24:55.000Z","date":"2025-08-19","kind":"sale","planned":false,"acquired":false,"shares":4202,"price":32.02,"value":134548.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The price reported in Column 4 is a weighted average price calculated by the broker executing the sell-to-cover transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":487874,"source":{"system":"sec-edgar","filing":"0001699031-25-000175","document":"wk-form4_1755721490.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000169903125000175/wk-form4_1755721490.xml","form_type":"4"}},{"id":1060479,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-08-20T20:23:02.000Z","date":"2025-08-19","kind":"sale","planned":false,"acquired":false,"shares":877,"price":32.02,"value":28081.54,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price calculated by the broker executing the sell-to-cover transactions. These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":285143,"source":{"system":"sec-edgar","filing":"0001699031-25-000173","document":"wk-form4_1755721377.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000169903125000173/wk-form4_1755721377.xml","form_type":"4"}},{"id":1085512,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":11965,"kind":"person","name":"CHASE WILLIAM J","position":1,"cik":"0001563572","reported_name":"CHASE WILLIAM J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-17T21:47:43.000Z","date":"2025-07-15","kind":"grant","planned":false,"acquired":true,"shares":533,"price":38.53,"value":20536.49,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 533 deferred stock units granted to Mr. Chase under our deferred stock program and 2024 Equity Incentive Plan in lieu of $20,568.49 of cash fees payable to Mr. Chase for his service as a director, based on a price per share of $38.53, which was the closing price per share of the Company's common stock on July 15, 2025. The awards will vest immediately upon grant date."}],"balance_after":36315,"source":{"system":"sec-edgar","filing":"0001699031-25-000158","document":"wk-form4_1752788856.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1563572/000169903125000158/wk-form4_1752788856.xml","form_type":"4"}},{"id":1085779,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":30137,"kind":"person","name":"SUMME GREGORY L","position":1,"cik":"0001143422","reported_name":"SUMME GREGORY L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-17T21:46:42.000Z","date":"2025-07-15","kind":"grant","planned":false,"acquired":true,"shares":825,"price":38.53,"value":31787.25,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"Represents 825 deferred stock units granted to Mr. Summe under our deferred stock program and 2024 Equity Incentive Plan in lieu of $31,787.67 of cash fees payable to Mr. Summe for his service as a director, based on a price per share of $38.53, which was the closing price per share of the Company's common stock on July 15, 2025. The awards will vest immediately upon grant date."}],"balance_after":38369,"source":{"system":"sec-edgar","filing":"0001699031-25-000156","document":"wk-form4_1752788796.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1143422/000169903125000156/wk-form4_1752788796.xml","form_type":"4"}},{"id":1085367,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":11446,"kind":"person","name":"MIZELL STEVEN","position":1,"cik":"0001189403","reported_name":"MIZELL STEVEN","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-17T21:45:35.000Z","date":"2025-07-15","kind":"grant","planned":false,"acquired":true,"shares":517,"price":38.53,"value":19920.01,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"Represents 517 deferred stock units granted to Mr. Mizell under our deferred stock program and 2024 Equity Incentive Plan in lieu of $19,945.21 of cash fees payable to Mr. Mizell for his service as a director, based on a price per share of $38.53, which was the closing price per share of the Company's common stock on July 15, 2025. The awards will vest immediately upon grant date."}],"balance_after":36202,"source":{"system":"sec-edgar","filing":"0001699031-25-000154","document":"wk-form4_1752788728.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1189403/000169903125000154/wk-form4_1752788728.xml","form_type":"4"}},{"id":1085715,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-07-17T21:44:21.000Z","date":"2025-07-15","kind":"sale","planned":true,"acquired":false,"shares":8000,"price":38.93,"value":311440.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on March 13, 2025."}],"balance_after":286020,"source":{"system":"sec-edgar","filing":"0001699031-25-000152","document":"wk-form4_1752788654.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2024196/000169903125000152/wk-form4_1752788654.xml","form_type":"4"}},{"id":1092087,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":77707,"kind":"person","name":"DING CHUN R","position":1,"cik":"0001250077","reported_name":"DING CHUN R","relationship":{"ten_percent_owner":true}}],"security":"Common Stock","published_at":"2025-07-03T20:31:31.000Z","date":"2025-07-01","kind":"sale","planned":false,"acquired":false,"shares":27843,"price":50.25,"value":1399110.75,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"On July 1, 2025, the CRCM Funds sold 27,843 shares of common stock in a series of transactions at prices ranging from $50.09 to $50.53 per share. The price reported in Column 4 is a weighted average price. The detailed breakdown of executed transactions will be furnished upon request."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"Securities are owned directly by funds (the \"CRCM Funds\") and separately managed accounts managed by CRCM LP, a Delaware limited partnership and a registered investment adviser with the U.S. Securities and Exchange Commission (the \"Investment Manager\"). The Reporting Person holds ownership interests in the CRCM Funds. The Reporting Person is the managing partner of the Investment Manager and may be deemed to have an indirect pecuniary interest in a percentage of the securities held by the CRCM Funds. Following the transactions reported in this Form 4, the CRCM Funds and separately managed accounts held directly in the aggregate 3,305,055 shares of common stock of the Issuer (\"common stock\"). The Reporting Person may be deemed to beneficially own a percentage of shares of common stock by virtue of his proportional interest in the CRCM Funds."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The Reporting Person disclaims any beneficial ownership of any of the Issuer's securities reported herein, or otherwise, except as to securities representing the Reporting Person's proportional interest in the CRCM Funds, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such other securities of the Issuer for purposes of Section 16 or for any other purpose."}],"balance_after":3305055,"source":{"system":"sec-edgar","filing":"0002075648-25-000002","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1250077/000207564825000002/form4.xml","form_type":"4"}},{"id":1092086,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":77707,"kind":"person","name":"DING CHUN R","position":1,"cik":"0001250077","reported_name":"DING CHUN R","relationship":{"ten_percent_owner":true}}],"security":"Common Stock","published_at":"2025-07-03T20:31:31.000Z","date":"2025-07-01","kind":"sale","planned":false,"acquired":false,"shares":260832,"price":49.58,"value":12932050.56,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"On July 1, 2025, the CRCM Funds sold 260,832 shares of common stock in a series of transactions at prices ranging from $49.09 to $50.08 per share. The price reported in Column 4 is a weighted average price. The detailed breakdown of executed transactions will be furnished upon request."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"Securities are owned directly by funds (the \"CRCM Funds\") and separately managed accounts managed by CRCM LP, a Delaware limited partnership and a registered investment adviser with the U.S. Securities and Exchange Commission (the \"Investment Manager\"). The Reporting Person holds ownership interests in the CRCM Funds. The Reporting Person is the managing partner of the Investment Manager and may be deemed to have an indirect pecuniary interest in a percentage of the securities held by the CRCM Funds. Following the transactions reported in this Form 4, the CRCM Funds and separately managed accounts held directly in the aggregate 3,305,055 shares of common stock of the Issuer (\"common stock\"). The Reporting Person may be deemed to beneficially own a percentage of shares of common stock by virtue of his proportional interest in the CRCM Funds."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The Reporting Person disclaims any beneficial ownership of any of the Issuer's securities reported herein, or otherwise, except as to securities representing the Reporting Person's proportional interest in the CRCM Funds, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such other securities of the Issuer for purposes of Section 16 or for any other purpose."}],"balance_after":3332898,"source":{"system":"sec-edgar","filing":"0002075648-25-000002","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1250077/000207564825000002/form4.xml","form_type":"4"}},{"id":1092085,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":77707,"kind":"person","name":"DING CHUN R","position":1,"cik":"0001250077","reported_name":"DING CHUN R","relationship":{"ten_percent_owner":true}}],"security":"Common Stock","published_at":"2025-07-03T20:31:31.000Z","date":"2025-07-01","kind":"sale","planned":false,"acquired":false,"shares":51125,"price":48.88,"value":2498990.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"On July 1, 2025, the CRCM Funds sold 51,125 shares of common stock in a series of transactions at prices ranging from $48.09 to $49.08 per share. The price reported in Column 4 is a weighted average price. The detailed breakdown of executed transactions will be furnished upon request."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"Securities are owned directly by funds (the \"CRCM Funds\") and separately managed accounts managed by CRCM LP, a Delaware limited partnership and a registered investment adviser with the U.S. Securities and Exchange Commission (the \"Investment Manager\"). The Reporting Person holds ownership interests in the CRCM Funds. The Reporting Person is the managing partner of the Investment Manager and may be deemed to have an indirect pecuniary interest in a percentage of the securities held by the CRCM Funds. Following the transactions reported in this Form 4, the CRCM Funds and separately managed accounts held directly in the aggregate 3,305,055 shares of common stock of the Issuer (\"common stock\"). The Reporting Person may be deemed to beneficially own a percentage of shares of common stock by virtue of his proportional interest in the CRCM Funds."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The Reporting Person disclaims any beneficial ownership of any of the Issuer's securities reported herein, or otherwise, except as to securities representing the Reporting Person's proportional interest in the CRCM Funds, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such other securities of the Issuer for purposes of Section 16 or for any other purpose."}],"balance_after":3593730,"source":{"system":"sec-edgar","filing":"0002075648-25-000002","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1250077/000207564825000002/form4.xml","form_type":"4"}},{"id":1097542,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2025-07-01T20:11:15.000Z","date":"2025-06-30","kind":"sale","planned":true,"acquired":false,"shares":9692,"price":52,"value":503984.0,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on March 13, 2025."}],"balance_after":492076,"source":{"system":"sec-edgar","filing":"0001699031-25-000139","document":"wk-form4_1751400666.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000169903125000139/wk-form4_1751400666.xml","form_type":"4"}},{"id":1109401,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18308,"kind":"person","name":"Ofman Joshua J.","position":1,"cik":"0001822088","reported_name":"Ofman Joshua J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2025-06-16T20:08:27.000Z","date":"2025-06-12","kind":"sale","planned":true,"acquired":false,"shares":9692,"price":42.3049,"value":410019.0908,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"The sale transaction reported in this Form 4 is made pursuant to a Rule 10b5-1 trading plan adopted on March 13, 2025."}],"balance_after":501768,"source":{"system":"sec-edgar","filing":"0001699031-25-000135","document":"wk-form4_1750104500.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000169903125000135/wk-form4_1750104500.xml","form_type":"4"}},{"id":1129586,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":30137,"kind":"person","name":"SUMME GREGORY L","position":1,"cik":"0001143422","reported_name":"SUMME GREGORY L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-30T23:24:34.000Z","date":"2025-05-29","kind":"grant","planned":false,"acquired":true,"shares":6082,"price":41.1,"value":249970.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of 6,082 deferred stock units (\"DSUs\") granted to Mr. Summe under our 2024 Equity Incentive Plan in lieu of 6,082 restricted stock units. The DSUs will vest in full on the earlier to occur of (i) May 29, 2026 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. Each DSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":37544,"source":{"system":"sec-edgar","filing":"0001699031-25-000130","document":"wk-form4_1748647451.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1143422/000169903125000130/wk-form4_1748647451.xml","form_type":"4"}},{"id":1129205,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":11965,"kind":"person","name":"CHASE WILLIAM J","position":1,"cik":"0001563572","reported_name":"CHASE WILLIAM J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-30T23:23:43.000Z","date":"2025-05-29","kind":"grant","planned":false,"acquired":true,"shares":6082,"price":41.1,"value":249970.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of 6,082 restricted stock units (\"RSUs\") granted to Mr. Chase under our 2024 Equity Incentive Plan. The RSUs will vest in full on the earlier to occur of (i) May 29, 2026 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. Each RSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":35782,"source":{"system":"sec-edgar","filing":"0001699031-25-000129","document":"wk-form4_1748647406.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1563572/000169903125000129/wk-form4_1748647406.xml","form_type":"4"}},{"id":1129046,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":11446,"kind":"person","name":"MIZELL STEVEN","position":1,"cik":"0001189403","reported_name":"MIZELL STEVEN","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-30T23:22:57.000Z","date":"2025-05-29","kind":"grant","planned":false,"acquired":true,"shares":6082,"price":41.1,"value":249970.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of 6,082 deferred stock units (\"DSUs\") granted to Mr. Mizell under our 2024 Equity Incentive Plan in lieu of 6,082 restricted stock units. The DSUs will vest in full on the earlier to occur of (i) May 29, 2026 and (ii) the date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date. Each DSU represents the right to receive, at settlement, one share of common stock."}],"balance_after":35685,"source":{"system":"sec-edgar","filing":"0001699031-25-000128","document":"wk-form4_1748647344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1189403/000169903125000128/wk-form4_1748647344.xml","form_type":"4"}},{"id":1129548,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":36437,"kind":"person","name":"Krevans Sarah","position":1,"cik":"0002041931","reported_name":"Krevans Sarah","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-30T23:21:56.000Z","date":"2025-05-29","kind":"grant","planned":false,"acquired":true,"shares":6082,"price":41.1,"value":249970.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of 6,082 restricted stock units (\"RSUs\") granted to Ms. Krevans under our 2024 Equity Incentive Plan.  The RSUs will vest in full on the earlier to occur of (i) May 29, 2026 and (ii) the  date of the next annual meeting of the Company's stockholders, in each case subject to continued service through the applicable vesting date.  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These shares were sold as part of a block trade in multiple transactions, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price."}],"balance_after":511460,"source":{"system":"sec-edgar","filing":"0001699031-25-000107","document":"wk-form4_1746495858.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1699031/000169903125000107/wk-form4_1746495858.xml","form_type":"4"}},{"id":1159603,"issuer":{"id":4122,"kind":"organization","name":"GRAIL, Inc.","symbol":"GRAL"},"owners":[{"id":18452,"kind":"person","name":"Freidin Aaron","position":1,"cik":"0002024196","reported_name":"Freidin Aaron","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-05-06T00:46:25.000Z","date":"2025-05-02","kind":"sale","planned":false,"acquired":false,"shares":41150,"price":33.93,"value":1396219.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price calculated by the broker executing the sell-to-cover transactions. 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