{"data":[{"accessionNo":"0001831942-26-000023","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Commodore Capital LP","reportingCik":null,"personType":"IA,PN","sharesOwned":4475000,"percentOfClass":6.5,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000023","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Michael Kramarz","reportingCik":null,"personType":"HC,IN","sharesOwned":4475000,"percentOfClass":6.5,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000023","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Robert Egen Atkinson","reportingCik":null,"personType":"HC,IN","sharesOwned":4475000,"percentOfClass":6.5,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000023","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Commodore Capital Master LP","reportingCik":null,"personType":"PN","sharesOwned":4475000,"percentOfClass":6.5,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Viking Global Opportunities GP LLC","reportingCik":null,"personType":"OO","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Viking Global Opportunities Parent GP LLC","reportingCik":null,"personType":"OO","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"VIKING GLOBAL INVESTORS LP","reportingCik":null,"personType":"PN","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Shabet Rose Sharon","reportingCik":null,"personType":"IN","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"HALVORSEN OLE ANDREAS","reportingCik":null,"personType":"IN","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Viking Global Opportunities Illiquid Investments Sub-Master LP","reportingCik":null,"personType":"PN","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"Viking Global Opportunities Portfolio GP LLC","reportingCik":null,"personType":"OO","sharesOwned":3482434,"percentOfClass":5.03,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-26-002435","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":"713317105","securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2026-03-31","reportingPerson":"KAVRA 16 LLC","reportingCik":null,"personType":"OO","sharesOwned":1030680,"percentOfClass":1.5,"filedAt":"2026-05-15","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000013","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-04","reportingPerson":"Commodore Capital LP","reportingCik":null,"personType":"IA,PN","sharesOwned":3544101,"percentOfClass":5.1,"filedAt":"2026-03-11","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000013","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-04","reportingPerson":"Commodore Capital Master LP","reportingCik":null,"personType":"PN","sharesOwned":3544101,"percentOfClass":5.1,"filedAt":"2026-03-11","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000013","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-04","reportingPerson":"Robert Egen Atkinson","reportingCik":null,"personType":"HC,IN","sharesOwned":3544101,"percentOfClass":5.1,"filedAt":"2026-03-11","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001831942-26-000013","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2026-03-04","reportingPerson":"Michael Kramarz","reportingCik":null,"personType":"HC,IN","sharesOwned":3544101,"percentOfClass":5.1,"filedAt":"2026-03-11","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000902664-25-005019","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-30","reportingPerson":"Point72 Asset Management, L.P.","reportingCik":null,"personType":"PN","sharesOwned":2067432,"percentOfClass":3,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000902664-25-005019","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-30","reportingPerson":"Point72 Capital Advisors, Inc.","reportingCik":null,"personType":"CO","sharesOwned":2067432,"percentOfClass":3,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000902664-25-005019","formType":"SCHEDULE 13G/A","amendmentNo":2,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-30","reportingPerson":"Steven A. Cohen","reportingCik":null,"personType":"IN","sharesOwned":2067432,"percentOfClass":3,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"VIKING GLOBAL INVESTORS LP","reportingCik":null,"personType":"PN","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Viking Global Opportunities Parent GP LLC","reportingCik":null,"personType":"OO","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Viking Global Opportunities GP LLC","reportingCik":null,"personType":"OO","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Viking Global Opportunities Portfolio GP LLC","reportingCik":null,"personType":"OO","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Viking Global Opportunities Illiquid Investments Sub-Master LP","reportingCik":null,"personType":"PN","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"HALVORSEN OLE ANDREAS","reportingCik":null,"personType":"IN","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Ott David C.","reportingCik":null,"personType":"IN","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0000905148-25-003508","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Shabet Rose Sharon","reportingCik":null,"personType":"IN","sharesOwned":3482434,"percentOfClass":5.1,"filedAt":"2025-10-03","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001856079-25-000004","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001835597","issuerName":"PepGen Inc.","ticker":"PEPG","cusip":null,"securityClass":"Common Stock, $0.0001 par value per share","eventDate":"2025-09-30","reportingPerson":"Oxford Science Enterprises plc","reportingCik":null,"personType":"CO","sharesOwned":4955388,"percentOfClass":7.2,"filedAt":"2025-10-01","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001346824-25-000009","formType":"SCHEDULE 13D/A","amendmentNo":4,"issuerCik":"0001835597","issuerName":"PEPGEN INC.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"RA Capital Management, L.P.","reportingCik":"0001346824","personType":"IA,PN","sharesOwned":20099753,"percentOfClass":29.2,"filedAt":"2025-09-30","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001346824-25-000009","formType":"SCHEDULE 13D/A","amendmentNo":4,"issuerCik":"0001835597","issuerName":"PEPGEN INC.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Peter Kolchinsky","reportingCik":"0001384859","personType":"HC,IN","sharesOwned":20099753,"percentOfClass":29.2,"filedAt":"2025-09-30","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001346824-25-000009","formType":"SCHEDULE 13D/A","amendmentNo":4,"issuerCik":"0001835597","issuerName":"PEPGEN INC.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"Rajeev Shah","reportingCik":"0001619841","personType":"HC,IN","sharesOwned":20099753,"percentOfClass":29.2,"filedAt":"2025-09-30","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"},{"accessionNo":"0001346824-25-000009","formType":"SCHEDULE 13D/A","amendmentNo":4,"issuerCik":"0001835597","issuerName":"PEPGEN INC.","ticker":"PEPG","cusip":null,"securityClass":"Common stock, par value $0.0001 per share","eventDate":"2025-09-26","reportingPerson":"RA Capital Healthcare Fund, L.P.","reportingCik":"0001315082","personType":"PN","sharesOwned":18554273,"percentOfClass":27,"filedAt":"2025-09-30","canonicalUrl":"https://xoomar.com/markets/stocks/pepg"}],"updatedAt":"2026-11-05T14:36:36.128Z","source":"xoomar.com","docs":"https://xoomar.com/markets/api","license":"https://xoomar.com/terms","attribution":"Credit XOOMAR with a link to the dataset page on xoomar.com when you republish this data","canonicalUrl":"https://xoomar.com/markets/stocks/pepg","meta":{"source":"SEC","sourceAttribution":"Schedule 13D and 13G data: SEC.","notice":"10 requests a minute without a key, 30 with a free key. Get a free key at https://xoomar.com/signup?utm_source=api, register your app at https://xoomar.com/developers/register?utm_source=api, and credit the data as \"Data: XOOMAR\" together with the sourceAttribution line."}}