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BAKER BROS. ADVISORS LP Insider Trading Activity

Every SEC Form 4 transaction reported by BAKER BROS. ADVISORS LP, sourced directly from SEC EDGAR and updated as new filings are accepted.

By · SEC Form 4 & insider trading data analysts
Last updated:

Quick Answer

Is BAKER BROS. ADVISORS LP buying or selling?

BAKER BROS. ADVISORS LP reported 74 open-market buys ($3.0B) and 48 sells ($2.2B) across 122 Form 4 filings at 24 companies — a net buying position of $866.5M.

Source: SEC EDGAR Form 4

Key Statistics (as of Jul 16, 2026)

Total Form 4 filings
122
SEC EDGAR
Companies
24
Buys (74)
$3.0B
Sells (48)
$2.2B

Insider sentiment

Net buying

Net insider flow of $866.5M in net buying, filed between Jan 19, 2018 – Jul 16, 2026.

Companies BAKER BROS. ADVISORS LP files for

#CompanyForm 4 filings
1GHDXGENOMIC HEALTH INC34
2KODKodiak Sciences Inc.22
3MDGLMADRIGAL PHARMACEUTICALS, INC.8
4ONCBeiGene, Ltd.8
5SGENSEATTLE GENETICS INC /WA6
6ACADACADIA PHARMACEUTICALS INC5
7INCYINCYTE CORP5
8TRDAEntrada Therapeutics, Inc.5
9NGNENeoleukin Therapeutics, Inc.4
10ALXNALEXION PHARMACEUTICALS, INC.3

Recent BAKER BROS. ADVISORS LP transactions

DateTickerRoleTypeSharesValue
Jul 16, 2026CELCOtherSale3.1M$317.8M
May 27, 2026ONCDirectorSale11.0K$262.0K
Dec 19, 2025KODDirector, 10% OwnerPurchase2.6M$60.0M
Dec 11, 2025KYMRDirector, 10% OwnerPurchase2.0M$172.5M
Nov 24, 2025TRDA10% OwnerPurchase28.9K$261.8K
Nov 12, 2025TRDA10% OwnerPurchase178.0K$1.4M
Oct 2, 2025KALAOtherSale730.4K$1.1M
Sep 10, 2025CELC10% OwnerPurchase170.1K$9.6M
Aug 20, 2025MDGLDirectorPurchase97.1K$36.9M
Aug 20, 2025MDGLDirectorPurchase68.6K$25.0M
Jul 1, 2025KYMRDirectorPurchase655.5K$28.8M
Mar 19, 2025IMCRDirectorPurchase807.3K$24.0M
Mar 1, 2025ONCDirectorSale732.8K$190.5M
Dec 31, 2024KALA10% OwnerPurchase310.6K$2.0M
Dec 17, 2024BCYCDirector, 10% OwnerPurchase1.5M$21.2M
Dec 11, 2024ONCDirectorSale1.0M$194.2M
Aug 22, 2024KYMRDirectorPurchase1$46.41
Mar 28, 2024IGMSDirector, 10% OwnerPurchase395.3K$3.4M
Dec 15, 2023IGMSDirector, 10% OwnerPurchase532.7K$3.4M
Dec 14, 2023MDGLDirectorPurchase101.8K$22.5M
Dec 14, 2023MDGLDirectorPurchase34.6K$7.5M
Nov 21, 2023MDGLDirectorPurchase64.3K$12.1M
Nov 21, 2023MDGLDirectorPurchase67.1K$11.9M
Nov 15, 2023MDGLDirectorPurchase49.4K$7.8M
Nov 15, 2023MDGLDirectorPurchase107.5K$15.8M

Showing the 25 most recent filings of 122. Screen every filing.

BAKER BROS. ADVISORS LP insider trading FAQ

Is BAKER BROS. ADVISORS LP buying or selling?

Across 122 SEC Form 4 filings, BAKER BROS. ADVISORS LP reported 74 open-market purchases totaling $3.0B and 48 sales totaling $2.2B — a net buying position of $866.5M.

Which companies does BAKER BROS. ADVISORS LP file Form 4s for?

BAKER BROS. ADVISORS LP has reported insider transactions at 24 companies, most often GENOMIC HEALTH INC (GHDX), Kodiak Sciences Inc. (KOD), MADRIGAL PHARMACEUTICALS, INC. (MDGL), BeiGene, Ltd. (ONC), SEATTLE GENETICS INC /WA (SGEN).

How far back does BAKER BROS. ADVISORS LP's filing history go?

Trabud holds BAKER BROS. ADVISORS LP's SEC Form 4 filings from Jan 19, 2018 – Jul 16, 2026, sourced directly from SEC EDGAR.

Where does Trabud get BAKER BROS. ADVISORS LP's insider trading data?

Directly from SEC EDGAR Form 4 filings. Every transaction on this page is a real filing accepted by the SEC, updated as new filings arrive.

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