Arcellx, Inc. - ACLX
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 41
Latest filed: May 15, 2026
| Form | Count |
|---|---|
| 4 | 20 |
| SCHEDULE 13G/A | 8 |
| SCHEDULE 13D/A | 5 |
| 144 | 5 |
| 8-K | 2 |
| SCHEDULE 13G | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 15, 2026 | SCHEDULE 13G/A | — | 0000902664-26-002548 | View |
| Apr 30, 2026 | SCHEDULE 13D/A | — | 0001072613-26-000356 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001193125-26-188029 | View |
| Apr 28, 2026 | 8-K | Apr 28, 2026 | 0001104659-26-050318 | View |
| Apr 28, 2026 | SCHEDULE 13D/A | — | 0001193125-26-187088 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001613689-26-000009 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001193125-26-187305 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001789632-26-000010 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001930862-26-000008 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001417976-26-000002 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001572000-26-000002 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0002018445-26-000002 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001670683-26-000002 | View |
| Apr 28, 2026 | 4 | Apr 28, 2026 | 0001663771-26-000002 | View |
| Apr 28, 2026 | SCHEDULE 13D/A | — | 0001104659-26-049902 | View |
| Apr 17, 2026 | 4 | Apr 15, 2026 | 0001193125-26-161748 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000638 | View |
| Mar 19, 2026 | 4 | Mar 17, 2026 | 0001193125-26-116340 | View |
| Mar 06, 2026 | SCHEDULE 13G/A | — | 0000315066-26-000660 | View |
| Mar 06, 2026 | SCHEDULE 13G/A | — | 0001897612-26-000310 | View |
| Mar 04, 2026 | 4 | Mar 04, 2026 | 0001193125-26-092135 | View |
| Feb 27, 2026 | 4 | Feb 27, 2026 | 0001193125-26-083657 | View |
| Feb 27, 2026 | 144 | — | 0001613689-26-000007 | View |
| Feb 25, 2026 | 144 | — | 0001930862-26-000006 | View |
| Feb 25, 2026 | 4 | Feb 25, 2026 | 0001193125-26-072579 | View |
| Feb 24, 2026 | SCHEDULE 13D/A | — | 0001193125-26-067840 | View |
| Feb 24, 2026 | SCHEDULE 13D/A | — | 0001072613-26-000212 | View |
| Feb 23, 2026 | 8-K | Feb 22, 2026 | 0001193125-26-063955 | View |
| Feb 19, 2026 | 4 | Feb 19, 2026 | 0001193125-26-059840 | View |
| Feb 19, 2026 | 144 | — | 0001930862-26-000004 | View |
| Feb 18, 2026 | 4 | Feb 17, 2026 | 0001193125-26-057469 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | — | 0001897612-26-000291 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | — | 0001104659-26-016366 | View |
| Feb 17, 2026 | SCHEDULE 13G | — | 0000902664-26-001076 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | — | 0001346824-26-000033 | View |
| Feb 17, 2026 | 144 | — | 0001930862-26-000002 | View |
| Feb 13, 2026 | 4 | Feb 11, 2026 | 0001613689-26-000004 | View |
| Feb 13, 2026 | 4 | Feb 11, 2026 | 0001613689-26-000005 | View |
| Feb 05, 2026 | SCHEDULE 13G/A | — | 0000315066-26-000369 | View |
| Jan 20, 2026 | 144 | — | 0001950047-26-000558 | View |
| Jan 20, 2026 | 4 | Jan 20, 2026 | 0001193125-26-017002 | View |