$AMPH SEC Filings

Filed On	Filing
23 Sep 2026	Form 4: Peters William J, Director Sold 4,139 shares ($103K)
21 Sep 2026	144
17 Sep 2026	Form 4: Zhou Rong, SENIOR EVP, PRODUCTION CENTER Received 10,000 shares by exercise or conversion ($134K) · Sold 10,000 shares ($239K)
03 Sep 2026	Form 4: Zhou Rong, SENIOR EVP, PRODUCTION CENTER Sold 3,187 shares ($75.3K)
01 Sep 2026	144
18 Aug 2026	144
12 Aug 2026	Form 4: Prins Richard K, Director Sold 7,973 shares ($162K)
11 Aug 2026	Form 4: Peters William J, Director Received 5,053 shares by exercise or conversion ($100K) · Sold 8,180 shares ($184K)
11 Aug 2026	144
07 Aug 2026	144
06 Aug 2026	10-Q
06 Aug 2026	8-K: Results of Operations and Financial Condition
14 Jul 2026	SCHEDULE 13G
13 Jul 2026	Form 4: Pierce Anthony T, Director Received 7,886 shares as a grant or award · Granted 16,646 Stock Option (right to buy)
13 Jul 2026	Form 3: Pierce Anthony T, Director No securities owned
13 Jul 2026	8-K: Departure/Election of Directors or Officers; Compensation
08 Jul 2026	8-K: Other Events
03 Jun 2026	Form 4: Prins Richard K, Director Gave 1,500 shares as a gift · Received 8,143 shares as a grant or award · Granted 17,365 Stock Option (right to buy)
03 Jun 2026	Form 4: Lee Howard, Director Received 8,143 shares as a grant or award · Granted 17,365 Stock Option (right to buy) · Gave up 769 shares to cover exercise price or tax ($14.2K)
03 Jun 2026	Form 4: Gerst Diane G., Director Received 8,143 shares as a grant or award · Granted 17,365 Stock Option (right to buy)

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