Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights urn:uuid:44dc5070-ddad-005f-702e-d63c7b5544f5 2026-07-25T19:52:13-04:00 Jonathan Moreland Profit from legal insider trading. InsiderInsights.com provides free insider trading data tools and resources, and professional grade subscription based real time Form 4 data, analysis and services AMPH: PIERCE ANTHONY T (DIR) Acquired (JB) 7,886 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 7/9 urn:uuid:6506dcfd-7959-43d3-abbe-3536bd60150e 2026-07-13T19:38:01-04:00 AMPH: PIERCE ANTHONY T (DIR) Filed a Form 3, Becoming a Registered Insider at AMPHASTAR PHARMACEUTICALS INC With Initial Holdings of 0 urn:uuid:cbb89d3d-bc73-44e9-0fd8-bbc3a236204b 2026-07-13T19:36:13-04:00 AMPH: PRINS RICHARD K (DIR) Acquired (JB) 8,143 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 6/1 urn:uuid:e4ec0d14-65e8-474a-c72b-005da7b8cd27 2026-06-03T21:22:11-04:00 AMPH: PRINS RICHARD K (DIR) Disposed (JS) 1,500 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 8/19 urn:uuid:b7ffd222-7fc5-9128-90d4-cb29dd59fff1 2026-06-03T21:22:11-04:00 AMPH: LEE HOWARD (DIR) Acquired (JB) 8,143 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 6/1 urn:uuid:3cd53449-7fc7-fea4-3928-ee23b3f060aa 2026-06-03T21:20:03-04:00 AMPH: LEE HOWARD (DIR) Disposed (JS) 769 Shares of AMPHASTAR PHARMACEUTICALS INC for $18.45 on 6/2 urn:uuid:b4a009cb-cefe-6a97-9261-85ae76ec71ca 2026-06-03T21:20:03-04:00 AMPH: ZASLOFF MICHAEL A (DIR) Acquired (JB) 8,143 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 6/1 urn:uuid:23c0cbde-1185-bde5-d974-be805bd3d637 2026-06-03T20:34:15-04:00 AMPH: GERST DIANE G (DIR) Acquired (JB) 8,143 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 6/1 urn:uuid:4c016fb8-9a0b-39c9-0176-5418f573f495 2026-06-03T20:33:00-04:00 AMPH: GAUGH DAVID RUSSELL (DIR) Acquired (JB) 8,143 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 6/1 urn:uuid:cfaf7f10-5101-5935-6cc4-8dd7820b3aa8 2026-06-03T20:31:10-04:00 AMPH: DEFLIN GAYLE (DIR) Acquired (JB) 8,143 Shares of AMPHASTAR PHARMACEUTICALS INC for $0.00 on 6/1 urn:uuid:6209e907-98ad-6ee1-2450-3be61c178e3b 2026-06-03T20:29:39-04:00