$AMPX 4 SEC Filings

Filed On	Filing
25 Aug 2026	Form 4: Sun Kang, Director Sold 62,101 shares ($642K)
25 Aug 2026	Form 4: Stefan Constantin Ionel, Chief Technology Officer Sold 29,681 shares ($307K)
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
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)
05 Jun 2026	Form 4: Stepien Thomas M, Director Gave 67,298 shares as a gift · Acquired 36,914 shares (Gift) · Sold 2,000 shares ($41.9K)
28 May 2026	Form 4: Sun Kang, Director Sold 356 shares ($6.12K)
28 May 2026	Form 4: Stepien Thomas M, Director Sold 4,375 shares ($75.2K)
28 May 2026	Form 4: Stefan Constantin Ionel, Chief Technology Officer Sold 3,208 shares ($55.2K)
28 May 2026	Form 4: Dixon Donald R, Director Sold 17,895 shares ($320K)
26 May 2026	Form 4: Sun Kang, Director Sold 67,796 shares ($1M)
26 May 2026	Form 4: Stefan Constantin Ionel, Chief Technology Officer Sold 28,812 shares ($426K)
26 May 2026	Form 4: Stepien Thomas M, Director Sold 60,702 shares ($898K)
07 May 2026	Form 4: Sun Kang, Director Received 6,250 shares as a grant or award
02 Apr 2026	Form 4: Sun Kang, Director Received 1,500,000 shares by exercise or conversion ($3.03M) · Sold 1,500,000 shares ($23.9M)
24 Mar 2026	Form 4: Sun Kang, Director Sold 217,869 shares ($4.1M)
13 Mar 2026	Form 4: Hsieh Wen Hsuan, Director Received 270,251 shares by exercise or conversion ($705K) · Sold 413,146 shares ($7.62M)

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