Quick Takeaways
- New Enterprise Associates 15, L.P. filed SCHEDULE 13D/A for Arcellx, Inc. Common Stock $0.001 par value per share (ACLX).
- Disclosed ownership: 5.3%.
- Date of event: 22 Feb 2026.
New Enterprise Associates 15, L.P. - 22 Feb 2026 SCHEDULE 13D/A Report for Arcellx, Inc. Common Stock $0.001 par value per share (ACLX)
- Filing Manager
- New Enterprise Associates 15, L.P.
- Reporting Manager
- Scott D. Sandell
- Symbol
- ACLX
- Shares outstanding
- 57,648,302 shares
- Disclosed Ownership
- 3,055,360 shares
- Ownership
- 5.3%
- Form type
- SCHEDULE 13D/A
- Filing time
- 24 Feb 2026, 19:19:09 UTC
- Date of event
- 22 Feb 2026
- Previous filing
- 14 Aug 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"New Enterprise Associates 15, L.P. disclosed 5.3% ownership in Arcellx, Inc. Common Stock $0.001 par value per share (ACLX) on 22 Feb 2026."
What Changed
- Previous schedule filing date: 14 Aug 2025.
- Current filing was accepted on 24 Feb 2026, 19:19.
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 FilingReporting Managers (7)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| New Enterprise Associates 15, L.P. | 5.3% | 3,045,262 | 0 | 3,045,262 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr., Managing Partner and Co-Chief Executive Officer | 0001629794 |
| NEA Partners 15, L.P. | 5.3% | 3,045,262 | 0 | 3,045,262 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr., Managing Partner and Co-Chief Executive Officer | 0001640031 |
| NEA 15 GP, LLC | 5.3% | 3,045,262 | 0 | 3,045,262 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr., Managing Partner and Co-Chief Executive Officer | 0001640033 |
| Forest Baskett | 5.3% | 3,045,262 | 0 | 3,045,262 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Forest Baskett | 0001277631 |
| Anthony A. Florence, Jr. | 5.3% | 3,045,262 | 0 | 3,045,262 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr. | 0001559827 |
| Mohamad H. Makhzoumi | 5.3% | 3,045,262 | 0 | 3,045,262 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Mohamad H. Makhzoumi | 0001630226 |
| Scott D. Sandell | 5.3% | 3,055,360 | 7,910 | 3,047,450 | /s/ Zachary Bambach | Zachary Bambach as attorney-in-fact for Scott D. Sandell | 0001237289 |