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Arcellx, Inc. — All Filings

427 total filings on record

Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.

Overview All Filings Financials Insiders
All 10-K 10-Q 10-Q/A 144 3 4 4/A 424B4 8-A12B 8-K ARS CERT CORRESP D D/A DEF 14A DEFA14A DRS DRS/A DRSLTR EFFECT NT 10-Q PRE 14A S-1 S-1/A S-1MEF S-3ASR S-8 SC 13D SC 13D/A SC 13G SC 13G/A SC 14D9 SC14D9C SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A SEC STAFF LETTER UPLOAD
Form Description Accession Number Filed Period
SCHEDULE 13G/A 0000102909-26-000638 Mar 26, 2026
4 4 0001193125-26-116340 Mar 19, 2026 Mar 17, 2026
SC 14D9 SC 14D9 0001104659-26-024793 Mar 6, 2026
SCHEDULE 13G/A 0001897612-26-000310 Mar 6, 2026
SCHEDULE 13G/A 0000315066-26-000660 Mar 6, 2026
4 4 0001193125-26-092135 Mar 4, 2026
4 4 0001193125-26-083657 Feb 27, 2026
144 0001613689-26-000007 Feb 27, 2026
10-K 10-K 0001193125-26-076876 Feb 26, 2026 Dec 31, 2025
4 4 0001193125-26-072579 Feb 25, 2026
144 0001930862-26-000006 Feb 25, 2026
SCHEDULE 13D/A 0001072613-26-000212 Feb 24, 2026
SCHEDULE 13D/A 0001193125-26-067840 Feb 24, 2026
SC14D9C SC14D9C 0001193125-26-063963 Feb 23, 2026
SC14D9C SC14D9C 0001193125-26-063958 Feb 23, 2026
8-K 8-K 0001193125-26-063955 Feb 23, 2026 Feb 22, 2026
144 0001930862-26-000004 Feb 19, 2026
4 4 0001193125-26-059840 Feb 19, 2026
4 4 0001193125-26-057469 Feb 18, 2026 Feb 17, 2026
144 0001930862-26-000002 Feb 17, 2026
SCHEDULE 13G/A 0001346824-26-000033 Feb 17, 2026
SCHEDULE 13G 0000902664-26-001076 Feb 17, 2026
SCHEDULE 13G/A 0001104659-26-016366 Feb 17, 2026
SCHEDULE 13G/A 0001897612-26-000291 Feb 17, 2026
4 0001613689-26-000005 Feb 13, 2026 Feb 11, 2026
4 0001613689-26-000004 Feb 13, 2026 Feb 11, 2026
SCHEDULE 13G/A 0000315066-26-000369 Feb 5, 2026
4 4 0001193125-26-017002 Jan 20, 2026
144 0001950047-26-000558 Jan 20, 2026
144 0001789632-26-000008 Jan 14, 2026
4 4 0001193125-26-013284 Jan 14, 2026
144 0001789632-26-000006 Jan 13, 2026
4 4 0001193125-26-012077 Jan 13, 2026
4 4 0001193125-26-010889 Jan 12, 2026
144 0001789632-26-000003 Jan 12, 2026
4 4 0001193125-26-005096 Jan 6, 2026 Jan 2, 2026
4 4 0001193125-26-005086 Jan 6, 2026 Jan 2, 2026
4 4 0001193125-26-005085 Jan 6, 2026 Jan 2, 2026
S-8 S-8 0001193125-26-000940 Jan 2, 2026
8-K 8-K 0001193125-25-311276 Dec 8, 2025 Dec 6, 2025
SCHEDULE 13G/A 0001897612-25-000567 Dec 5, 2025
4 4 0001193125-25-284944 Nov 17, 2025
10-Q 10-Q 0001193125-25-266932 Nov 5, 2025 Sep 30, 2025
8-K 8-K 0001193125-25-266866 Nov 5, 2025
SCHEDULE 13G/A 0000315066-25-002665 Nov 5, 2025
4 4 0001193125-25-240536 Oct 15, 2025
144 0001950047-25-008009 Oct 15, 2025
4 4 0001193125-25-232216 Oct 6, 2025 Oct 3, 2025
144 0001950047-25-007729 Oct 3, 2025
4 4 0001193125-25-225538 Sep 30, 2025