Schedule 13G/A
ACLXGBX Schedule 13G/A filing by T. Rowe Price Investment Management
T. Rowe Price Investment Management reported beneficial ownership of 2.7M shares, representing 12% of ARCELLX INC in this filing.
FiledMar 6, 2026
Ownership dateFeb 28, 2026
Reported shares2.7M
Reported ownership12%
Ownership details
Voting and dispositive power reported in the filing
These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.
Sole voting power
2.5M
Shared voting power
2.6M
Sole dispositive power
2.6M
Shared dispositive power
2.7M
Compared with the prior filing
How the reported position changed
This compares the current filing with the previous tracked Schedule 13 filing from the same reporting CIK for ACLXGBX. A change between filings does not by itself establish when shares were bought or sold.
Previous filingFeb 17, 2026
Reported share change-7,906,577
Ownership percentage change-6.3 pts
| Previous filing | This filing | |
|---|---|---|
| Reported shares | 10.6M | 2.7M |
| Reported ownership | 18.3% | 12% |
Source
Original filing and accession
Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.
- Reporting filer
- T. Rowe Price Investment Management
- CIK
- CIK0001897612
- Accession
- 0001897612-26-000310
- Form
- Schedule 13G/A
Read the filing in context