BVF PARTNERS L P/IL enters FOGHORN THERAPEUTICS INC. with 8.35M shares plus derivative instruments

Holding both equity and derivatives at entry signals strong long-term conviction in the company.

Direct Derivatives

BVF PARTNERS L P/IL

Filed: 10/5/2026ACC: 0000921895-26-002730

InsiderBVF PARTNERS L P/ILCIK 1055947

→

IssuerFOGHORN THERAPEUTICS INC.CIK 1822462

10% Owner

Since Oct 2026

8.35M

Baseline shares

100% direct

8.35M

Direct ownership

3 positions

9.51M

Derivative underlying

9 instruments

Security positions

All direct

Non-Derivative Holdings3

Common Stock, $0.0001 par value per share

Direct

Shares owned4.49M

Common Stock, $0.0001 par value per share

Direct

Shares owned619.26K

Common Stock, $0.0001 par value per share

Direct

Shares owned3.23M

Total

8.35M direct8.35M

Security Title	Shares Owned	Ownership Type
Common Stock, $0.0001 par value per share	4.49M	Direct
Common Stock, $0.0001 par value per share	619.26K	Direct
Common Stock, $0.0001 par value per share	3.23M	Direct
Total	8.35M	8.35M direct

Derivative Holdings9

Pre-Funded Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

3.13M

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Pre-Funded Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

2.39M

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Series 2 Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

703.63K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Series 1 Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

703.63K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Series 1 Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

1.02M

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Series 2 Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

1.02M

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Pre-Funded Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

313.93K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Series 1 Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

109.39K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Series 2 Warrants to Purchase Common Stock

Direct

Underlying security

Common Stock, $0.0001 par value

Underlying shares

109.39K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

9.51M

Owned

0.00

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Pre-Funded Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	3.13M	N/A
Pre-Funded Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	2.39M	N/A
Series 2 Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	703.63K	N/A
Series 1 Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	703.63K	N/A
Series 1 Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	1.02M	N/A
Series 2 Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	1.02M	N/A
Pre-Funded Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	313.93K	N/A
Series 1 Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	109.39K	N/A
Series 2 Warrants to Purchase Common Stock Direct	Common Stock, $0.0001 par value	—	—	109.39K	N/A
Total				9.51M	0.00