Form
SCHEDULE 13G/A
Passive or exempt beneficial ownership filing.
CITADEL ADVISORS LLC - 30 Sep 2025 SCHEDULE 13G/A Report for Cullinan Therapeutics, Inc. Common Stock, par value $0.0001 per share (the "Shares") (CGEM)
- Filing manager
- CITADEL ADVISORS LLC
- Reporting owner
- Kenneth Griffin
- Beneficially owned shares
- 1,988,907 shares
- Class ownership
- 3.4%
- Large-stake signal
-
Ownership
3.4%Beneficial ownership of this reported class.
Shares
1,988,907 sharesShares beneficially owned as disclosed.
Event date
30 Sep 2025Date tied to the ownership event or amendment.
Accepted by SEC
14 Nov 2025EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Symbol
- CGEM
- Shares outstanding
- 58,497,265 shares
- Form type
- SCHEDULE 13G/A
- Accepted by SEC
- 14 Nov 2025, 16:03:50 UTC
- Event date
- 30 Sep 2025
- Previous filing
- 06 Aug 2025
- SEC filing
- View on sec.gov
Ownership signal
2 signals
Subject security
2 source fields
Source evidence
5 source fields
Key filing 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.
Key facts
- 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.
Change
- Previous schedule filing date: 06 Aug 2025.
- Current filing was accepted on 14 Nov 2025, 16:03.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (7)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| 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* |
CIK / CUSIP context first