$AMPX SEC Filings

Filed On	Filing
09 Oct 2026	S-3ASR
28 Sep 2026	8-K: Entry into a Material Definitive Agreement Certain identified information has been excluded from this exhibit because it is both (i) not material and (ii) the type that the registrant treats as private or confidential. Omissions are designated by [***].
25 Aug 2026	Form 4: Sun Kang, Director Sold 62,101 shares ($642K)
25 Aug 2026	144
25 Aug 2026	Form 4: Stefan Constantin Ionel, Chief Technology Officer Sold 29,681 shares ($307K)
25 Aug 2026	144
25 Aug 2026	Form 4: Stepien Thomas M, Director Sold 23,529 shares ($243K) · Sold 8,000 shares ($80.2K) · Gave 15,346 shares as a gift · 1 more
25 Aug 2026	144
24 Aug 2026	144
13 Aug 2026	8-K: Entry into a Material Definitive Agreement; Creation of a Direct Financial Obligation
10 Aug 2026	SCHEDULE 13G/A
06 Aug 2026	10-Q
04 Aug 2026	8-K: Results of Operations and Financial Condition
27 Jul 2026	SCHEDULE 13G/A
17 Jun 2026	8-K: Submission of Matters to a Vote of Security Holders
16 Jun 2026	Form 4: Bayless Kathleen A, Director Received 10,423 shares as a grant or award
16 Jun 2026	Form 4: Satterthwaite Livingston, Director Received 10,423 shares as a grant or award
16 Jun 2026	Form 4: Dixon Donald R, Director Received 10,423 shares as a grant or award · Sold 85,000 shares ($1.46M)
16 Jun 2026	Form 4: Chu Steven, Director Received 10,423 shares as a grant or award
11 Jun 2026	Form 4: Dixon Donald R, Director Sold 40,000 shares ($765K)

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