BIOTECHNOLOGY VALUE FUND L P - 31 Mar 2025 SCHEDULE 13G/A Report for Vigil Neuroscience, Inc. Common Stock, par value $0.0001 per share (VIGL)

Filing Manager
BIOTECHNOLOGY VALUE FUND L P
Reporting Manager
BVF PARTNERS L P/IL
Security
Vigil Neuroscience, Inc. Common Stock, par value $0.0001 per share
Symbol
VIGL
Shares outstanding
47,392,392 shares
Disclosed Ownership
4,734,500 shares
Ownership
10%
Form type
SCHEDULE 13G/A
Filing time
15 May 2025, 16:42:33 UTC
Date of event
31 Mar 2025
Next filing
14 Aug 2025
SEC
View on sec.gov

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Quoteable Key Fact

"BIOTECHNOLOGY VALUE FUND L P disclosed 10% ownership in Vigil Neuroscience, Inc. Common Stock, par value $0.0001 per share (VIGL) on 31 Mar 2025."

Quick Takeaways

  • BIOTECHNOLOGY VALUE FUND L P filed SCHEDULE 13G/A for Vigil Neuroscience, Inc. Common Stock, par value $0.0001 per share (VIGL).
  • Disclosed ownership: 10%.
  • Date of event: 31 Mar 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 15 May 2025, 16:42.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (10)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
BIOTECHNOLOGY VALUE FUND L P 5.4% 2,538,417 0 2,538,417 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF I GP LLC 5.4% 2,538,417 0 2,538,417 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BIOTECHNOLOGY VALUE FUND II LP 4.1% 1,901,040 0 1,901,040 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF II GP LLC 4.1% 1,901,040 0 1,901,040 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
Biotechnology Value Trading Fund OS LP 0.5% 213,005 0 213,005 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF Partners OS Ltd. 0.5% 213,005 0 213,005 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF GP HOLDINGS LLC 9.4% 4,439,457 0 4,439,457 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF PARTNERS L P/IL 10% 4,734,500 0 4,734,500 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
BVF INC/IL 10% 4,734,500 0 4,734,500 /s/ Mark N. Lampert Mark N. Lampert, Authorized Signatory
LAMPERT MARK N 10% 4,734,500 0 4,734,500 /s/ Mark N. Lampert Mark N. Lampert

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