Key facts
- Paradigm Biocapital Advisors LP filed SCHEDULE 13G/A for Arcellx, Inc. Common Stock, $0.001 par value per share (ACLX).
- Disclosed ownership: 9.9%.
- Date of event: 31 Dec 2025.
Paradigm Biocapital Advisors LP - 31 Dec 2025 SCHEDULE 13G/A Report for Arcellx, Inc. Common Stock, $0.001 par value per share (ACLX)
- Filing Manager
- Paradigm Biocapital Advisors LP
- Reporting Manager
- Paradigm BioCapital Advisors LP
- Symbol
- ACLX
- Shares outstanding
- 57,818,343 shares
- Disclosed Ownership
- 5,724,016 shares
- Ownership
- 9.9%
- Form type
- SCHEDULE 13G/A
- Filing time
- 17 Feb 2026, 16:03:14 UTC
- Date of event
- 31 Dec 2025
- SEC
- View on sec.gov
Key filing fact
Paradigm Biocapital Advisors LP disclosed 9.9% ownership in Arcellx, Inc. Common Stock, $0.001 par value per share (ACLX) on 31 Dec 2025.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 17 Feb 2026, 16:03.
Research use
- 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.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (4)
Names, ownership, 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 |
|---|---|---|---|---|---|---|---|
| Paradigm BioCapital Advisors LP | 9.9% | 5,724,016 | 5,724,016 | 0 | /s/ David K. Kim | David K. Kim / Authorized Signatory | |
| Paradigm BioCapital Advisors GP LLC | 9.9% | 5,724,016 | 5,724,016 | 0 | /s/ David K. Kim | David K. Kim / Authorized Signatory | |
| Senai Asefaw, M.D. | 9.9% | 5,724,016 | 5,724,016 | 0 | /s/ Senai Asefaw, M.D. | N/A | |
| Paradigm BioCapital International Fund Ltd. | 8.7% | 5,055,581 | 5,055,581 | 0 | /s/ David K. Kim | David K. Kim / Authorized Signatory |
CIK / CUSIP context first