Filing Manager
CITADEL ADVISORS LLC
Reporting Manager
Kenneth Griffin
Symbol
CGEM
Shares outstanding
58,497,265 shares
Disclosed Ownership
1,988,907 shares
Ownership
3.4%
Form type
SCHEDULE 13G/A
Filing time
14 Nov 2025, 16:03:50 UTC
Date of event
30 Sep 2025
Previous filing
06 Aug 2025

Quoteable Key Fact

"CITADEL ADVISORS LLC disclosed 3.4% ownership in Cullinan Therapeutics, Inc. Common Stock, par value $0.0001 per share (the "Shares") (CGEM) on 30 Sep 2025."

Quick Takeaways

  • CITADEL ADVISORS LLC filed SCHEDULE 13G/A for Cullinan Therapeutics, Inc. Common Stock, par value $0.0001 per share (the "Shares") (CGEM).
  • Disclosed ownership: 3.4%.
  • Date of event: 30 Sep 2025.

What Changed

  • Previous schedule filing date: 06 Aug 2025.
  • Current filing was accepted on 14 Nov 2025, 16:03.

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.

Source Evidence

Backed by Schedule 13D/13G

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

See Original Filing

Reporting Managers (7)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Citadel Advisors LLC 3.1% 1,841,079 0 1,841,079 /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Advisors Holdings LP 3.1% 1,841,079 0 1,841,079 /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel GP LLC 3.1% 1,841,079 0 1,841,079 /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Securities LLC 0.3% 147,828 0 147,828 /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Securities Group LP 0.3% 147,828 0 147,828 /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Securities GP LLC 0.3% 147,828 0 147,828 /s/ Seth Levy Seth Levy, Authorized Signatory
Kenneth Griffin 3.4% 1,988,907 0 1,988,907 /s/ Seth Levy Seth Levy, attorney-in-fact*