Bain Capital Life Sciences Fund, L.P. - 31 Dec 2024 SCHEDULE 13G/A Report for Annexon, Inc. Common Stock, par value $0.001 per share (ANNX)

Filing Manager
Bain Capital Life Sciences Fund, L.P.
Reporting Manager
BCLS I Investco, LP
Security
Annexon, Inc. Common Stock, par value $0.001 per share
Symbol
ANNX
Shares outstanding
107,123,857 shares
Disclosed Ownership
5,249,069 shares
Ownership
4.9%
Form type
SCHEDULE 13G/A
Filing time
14 Feb 2025, 07:55:55 UTC
Date of event
31 Dec 2024
SEC
View on sec.gov

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Quoteable Key Fact

"Bain Capital Life Sciences Fund, L.P. disclosed 4.9% ownership in Annexon, Inc. Common Stock, par value $0.001 per share (ANNX) on 31 Dec 2024."

Quick Takeaways

  • Bain Capital Life Sciences Fund, L.P. filed SCHEDULE 13G/A for Annexon, Inc. Common Stock, par value $0.001 per share (ANNX).
  • Disclosed ownership: 4.9%.
  • Date of event: 31 Dec 2024.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 14 Feb 2025, 07:55.

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 (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
BCLS I Investco, LP 4.9% 5,249,069 0 5,249,069 /s/ Ricky Sun Ricky Sun, Partner of Bain Capital Life Sciences Investors, LLC
BCIP Life Sciences Associates, LP 0% 0 0 0 /s/ Ricky Sun Ricky Sun, Authorized Signatory of Boylston Coinvestors, LLC
Bain Capital Life Sciences Fund, L.P. 0% 0 0 0 /s/ Ricky Sun Ricky Sun, Partner of Bain Capital Life Sciences Investors, LLC

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