Archimedes Tech SPAC Partners ATII SEC Filings

NASDAQ ATII
$8.55 -0.82 (-8.80%)
At close: Oct 19, 2026 · 4:00 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Archimedes Tech SPAC Partners II Co. (ATII) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
1425Others0001104659-26-110424Sep 24, 2026 8:30 PM
2DEFM14AOthers0001104659-26-110234Sep 24, 2026 1:01 PM
3425Others0001104659-26-109977Sep 23, 2026 4:15 PM
4425Others0001104659-26-109671Sep 22, 2026 9:06 PM
5425Others0001104659-26-107735Sep 15, 2026 9:06 AM
6425Others0001104659-26-104791Sep 2, 2026 5:18 PM-
710-QQuarterly & Annual Report0001437749-26-027710Aug 13, 2026 4:36 PM
8425Others0001104659-26-088149Jul 29, 2026 4:15 PM
9425Others0001104659-26-087145Jul 27, 2026 9:18 PM
10425Others0001104659-26-083535Jul 14, 2026 8:42 PM
118-KCurrent Report0001104659-26-083534Jul 14, 2026 8:41 PM
12425Others0001104659-26-077836Jun 25, 2026 9:12 PM
138-KCurrent Report0001104659-26-077835Jun 25, 2026 9:10 PM
14425Others0001104659-26-076805Jun 23, 2026 8:00 PM
1510-QQuarterly & Annual Report0001437749-26-017077May 14, 2026 4:31 PM-
16425Others0001104659-26-057352May 8, 2026 10:42 PM
17425Others0001104659-26-057352May 8, 2026 10:42 PM
18425Others0001437749-26-013969Apr 30, 2026 6:12 AM
19425Others0001437749-26-013969Apr 30, 2026 6:12 AM
208-KCurrent Report0001437749-26-013968Apr 30, 2026 6:12 AM
218-KCurrent Report0001437749-26-013968Apr 30, 2026 6:12 AM
22425Others0001437749-26-013061Apr 23, 2026 9:40 PM
23425Others0001437749-26-012950Apr 22, 2026 10:26 PM
248-KCurrent Report0001437749-26-012949Apr 22, 2026 10:26 PM
25425Others0001437749-26-012871Apr 21, 2026 1:58 AM
268-KCurrent Report0001437749-26-012856Apr 20, 2026 9:30 PM
2710-KQuarterly & Annual Report0001437749-26-006780Mar 4, 2026 1:41 AM
28SCHEDULE 13GBeneficial Ownership Report0000312069-26-000047Feb 11, 2026 8:34 PM
2910-QQuarterly & Annual Report0001437749-25-033858Nov 7, 2025 9:16 PM
30SCHEDULE 13GBeneficial Ownership Report0001346554-25-000089Nov 7, 2025 4:09 PM
31SCHEDULE 13GBeneficial Ownership Report0000950170-25-108831Aug 14, 2025 8:01 PM
32SCHEDULE 13GBeneficial Ownership Report0000312069-25-000548Aug 12, 2025 10:06 PM
3310-QQuarterly & Annual Report0001437749-25-025722Aug 8, 2025 8:15 PM
3410-QQuarterly & Annual Report0001437749-25-016848May 14, 2025 8:16 PM
3510-KQuarterly & Annual Report0001437749-25-010221Mar 31, 2025 8:32 PM
368-KCurrent Report0001437749-25-010199Mar 31, 2025 8:15 PM
378-KCurrent Report0001437749-25-004417Feb 19, 2025 10:05 PM
38SCHEDULE 13GBeneficial Ownership Report0001493152-25-007602Feb 19, 2025 10:03 PM
39SCHEDULE 13GBeneficial Ownership Report0000950170-25-022750Feb 19, 2025 11:15 AM
408-KCurrent Report0001437749-25-004012Feb 14, 2025 9:26 PM
414Insider Transaction0001437749-25-003570Feb 12, 2025 9:12 PM
424Insider Transaction0001437749-25-003570Feb 12, 2025 9:12 PM
434Insider Transaction0001437749-25-003570Feb 12, 2025 9:12 PM
444Insider Transaction0001437749-25-003569Feb 12, 2025 9:12 PM
45424B4Prospectus0001437749-25-003437Feb 11, 2025 10:28 PM
463Insider Transaction0001437749-25-003374Feb 11, 2025 4:09 PM
473Insider Transaction0001437749-25-003374Feb 11, 2025 4:09 PM
483Insider Transaction0001437749-25-003374Feb 11, 2025 4:09 PM
49CERTOthers0001354457-25-000088Feb 11, 2025 12:20 PM
50EFFECTOthers9999999995-25-000370Feb 10, 2025 5:15 AM

Archimedes Tech SPAC Partners II Co. SEC Filings API

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