Baker Brothers Advisors filings

This page lists the SEC filings reported by Baker Brothers Advisors.

SEC filings by Baker Brothers Advisors (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13D/A2024-04-23BAKER BROS. ADVISORS LPTScan Therapeutics, Inc.2,828,9386.1%EDGAR
SC 13D2024-04-18BAKER BROS. ADVISORS LPBICYCLE THERAPEUTICS plc7,689,24319.9%EDGAR
SC 13D2024-04-01BAKER BROS. ADVISORS LPKymera Therapeutics, Inc.5,997,7069.8%EDGAR
SC 13D/A2024-03-28BAKER BROS. ADVISORS LPIGM Biosciences, Inc.4,145,70612.4%EDGAR
SC 13D/A2024-03-25BAKER BROS. ADVISORS LPMADRIGAL PHARMACEUTICALS, INC.2,070,54410.0%EDGAR
SC 13D2024-03-05BAKER BROS. ADVISORS LPvTv Therapeutics Inc.122,6645.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LP2seventy bio, Inc.2,527,6725.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPAchilles Therapeutics plc3,311,5678.1%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPAerovate Therapeutics, Inc.1,680,5176.1%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPSpyre Therapeutics, Inc.-0.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPAligos Therapeutics, Inc.3,664,0135.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPAravive, Inc.3,863,5685.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPBiomea Fusion, Inc.2,108,9495.9%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPCabaletta Bio, Inc.1,457,6263.4%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPAkero Therapeutics, Inc.2,368,3784.3%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPHERON THERAPEUTICS, INC. /DE/7,881,9335.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPCyteir Therapeutics, Inc.-0.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPCERUS CORP19,477,33910.7%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPHOOKIPA Pharma Inc.8,148,98510.0%EDGAR
SC 13G/A2024-02-14BAKER BROS. ADVISORS LPImmatics N.V.5,838,8536.9%EDGAR
Form 13F-HR
The 13F-HR report is filed quarterly to report securities held by the filer that fall under the SEC's 13F rules.
Form SC 13D/G
Reported by persons and groups who own 5% or more of any class of a company's outstanding shares. If the ownership changes by 1% or more, an amendment must be filed.
Form 3, 4, and 5
Form 3, 4, and 5 reports are filed to report insider transactions by company officers and directors, and any beneficial owners of more than ten percent of a company's shares. Form 3 is the initial report that must be filed when a person becomes an officer, director, or beneficial owner. Form 4 reports are used to report changes in ownership, while the Form 5 report is used for reporting transactions that should have been reported earlier in a Form 4 filing.