Biotechnology Value Fund L P - Mar 31, 2025 SCHEDULE 13G/A Report for Septerna, Inc. Common Stock, $0.001 par value per share (SEPN)

Filing Manager
BIOTECHNOLOGY VALUE FUND L P
Reporting Manager
BVF PARTNERS L P/IL
Security
Septerna, Inc. Common Stock, $0.001 par value per share
Symbol
SEPN
Shares outstanding
44.4M shares
Disclosed Ownership
4.4M shares
Ownership
9.9%
Form type
SCHEDULE 13G/A
Date filed
5/15/2025, 04:37 PM
Date of event
Mar 31, 2025
SEC
View on sec.gov

Reporting Managers (10)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
BIOTECHNOLOGY VALUE FUND L P 5.2% 2.3M 0 2.3M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF I GP LLC 5.2% 2.3M 0 2.3M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BIOTECHNOLOGY VALUE FUND II LP 4.1% 1.8M 0 1.8M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF II GP LLC 4.1% 1.8M 0 1.8M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
Biotechnology Value Trading Fund OS LP 0.5% 233K 0 233K /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF Partners OS Ltd. 0.5% 233K 0 233K /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF GP HOLDINGS LLC 9.2% 4.1M 0 4.1M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF PARTNERS L P/IL 9.9% 4.4M 0 4.4M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF INC/IL 9.9% 4.4M 0 4.4M /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
LAMPERT MARK N 9.9% 4.4M 0 4.4M /s/ Mark N. Lampert Mark N. Lampert