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 13G/A2021-02-16BAKER BROS. ADVISORS LPHERON THERAPEUTICS, INC. /DE/8,064,8328.7%EDGAR
SC 13G/A2021-02-16BAKER BROS. ADVISORS LPAscendis Pharma A/S3,540,2706.6%EDGAR
SC 13G2021-02-16BAKER BROS. ADVISORS LPAdaptimmune Therapeutics PLC58,985,2626.4%EDGAR
SC 13G2021-02-16BAKER BROS. ADVISORS LPVerastem, Inc.10,144,0396.0%EDGAR
SC 13G2021-02-16BAKER BROS. ADVISORS LPAltimmune, Inc.1,884,4515.1%EDGAR
SC 13G2021-02-16BAKER BROS. ADVISORS LPOpthea Ltd33,963,2409.8%EDGAR
SC 13G2021-02-16BAKER BROS. ADVISORS LPMereo Biopharma Group plc39,631,92911.4%EDGAR
SC 13G2021-02-16BAKER BROS. ADVISORS LPImmunocore Holdings plc3,352,3577.5%EDGAR
SC 13G2021-02-05BAKER BROS. ADVISORS LPZymeworks Inc.4,909,81010.0%EDGAR
SC 13D/A2021-01-29BAKER BROS. ADVISORS LPPrelude Therapeutics Inc10,126,41728.8%EDGAR
SC 13D/A2021-01-29BAKER BROS. ADVISORS LPZymeworks Inc.4,909,81010.0%EDGAR
SC 13D/A2021-01-29BAKER BROS. ADVISORS LPIGM Biosciences, Inc.3,157,78412.4%EDGAR
SC 13G/A2021-01-29BAKER BROS. ADVISORS LPIDERA PHARMACEUTICALS, INC.4,608,78612.0%EDGAR
SC 13D/A2021-01-05BAKER BROS. ADVISORS LPIGM Biosciences, Inc.3,157,27112.4%EDGAR
SC 13D/A2020-12-23BAKER BROS. ADVISORS LPNeoleukin Therapeutics, Inc.4,227,56710.0%EDGAR
SC 13D/A2020-12-11BAKER BROS. ADVISORS LPIGM Biosciences, Inc.3,193,02210.0%EDGAR
SC 13D/A2020-12-04BAKER BROS. ADVISORS LPBeiGene, Ltd.153,853,34313.0%EDGAR
SC 13D/A2020-11-24BAKER BROS. ADVISORS LPKodiak Sciences Inc.14,054,69827.6%EDGAR
SC 13D2020-09-30BAKER BROS. ADVISORS LPPrelude Therapeutics Inc10,121,22831.1%EDGAR
SC 13D/A2020-09-08BAKER BROS. ADVISORS LPKodiak Sciences Inc.12,275,74927.3%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.