Schedule 13G/A
ACLXGBX Schedule 13G/A filing by T. Rowe Price Investment Management
T. Rowe Price Investment Management reported beneficial ownership of 10.6M shares, representing 18.3% of ARCELLX INC in this filing.
FiledFeb 17, 2026
Ownership dateDec 31, 2025
Reported shares10.6M
Reported ownership18.3%
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
10.3M
Shared voting power
10.6M
Sole dispositive power
10.6M
Shared dispositive power
10.6M
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 filingDec 5, 2025
Reported share change+955,791
Ownership percentage change+1.7 pts
| Previous filing | This filing | |
|---|---|---|
| Reported shares | 9.6M | 10.6M |
| Reported ownership | 16.6% | 18.3% |
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
- 0001897612-26-000291
- Form
- Schedule 13G/A
Read the filing in context