Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights urn:uuid:90b5a0ea-8ca1-4922-7adb-01b8655ee8ca 2026-10-04T20:00:25-04:00 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 NAMS: KASTELEIN JOHANNES JACOB PIETER (DIR) Sold (AS) 50,246 Shares of NEWAMSTERDAM PHARMA CO N V for $25.03 on 9/30 urn:uuid:5c41dad1-4221-d7a6-e5ff-28e59a818709 2026-10-02T16:30:31-04:00 NAMS: KASTELEIN JOHANNES JACOB PIETER (DIR) Acquired (JB) 50,246 Shares of NEWAMSTERDAM PHARMA CO N V for $0.00 on 9/30 urn:uuid:6da5a1fe-1640-d556-e627-4fb83c197c32 2026-10-02T16:30:31-04:00 NAMS: DAVIDSON MICHAEL H (CEO,DIR) Bought (B) 10k Shares of NEWAMSTERDAM PHARMA CO N V for $22.65 on 9/14 urn:uuid:16f1e51a-9ff6-b4a0-8f91-307888fbc31c 2026-09-15T16:30:04-04:00 NAMS: SMITHER JOHN W (DIR) Sold (S) 1,600 Shares of NEWAMSTERDAM PHARMA CO N V for $25.32 on 9/4 urn:uuid:e7a15669-027c-0413-477d-7760d666dbd9 2026-09-09T16:30:03-04:00 NAMS: GUNNING ROBERT WILLIAM (VP,CT) Acquired (JB) 3,200 Shares of NEWAMSTERDAM PHARMA CO N V for $0.00 on 9/1 urn:uuid:9ecdf09d-8bd1-6e3d-8e48-30f96384702c 2026-09-03T16:30:05-04:00 NAMS: KASTELEIN JOHANNES JACOB PIETER (DIR) Sold (AS) 125k Shares of NEWAMSTERDAM PHARMA CO N V for $26.91 on 8/24 urn:uuid:7004af28-6aba-dc15-e63c-c7707bbea6ea 2026-08-25T16:30:07-04:00 NAMS: KASTELEIN JOHANNES JACOB PIETER (DIR) Acquired (JB) 125k Shares of NEWAMSTERDAM PHARMA CO N V for $0.00 on 8/24 urn:uuid:b7b93680-29c7-5b35-f69d-f65dd6a27f20 2026-08-25T16:30:07-04:00 NAMS: GUNNING ROBERT WILLIAM (VP,CT) Filed a Form 3, Becoming a Registered Insider at NEWAMSTERDAM PHARMA CO N V With Initial Holdings of 0 urn:uuid:50f219eb-5f31-fb98-89fa-52eb1ec93bc2 2026-08-14T16:07:03-04:00 NAMS: KOOIJ LOUISE FREDERIKA (CAO) Exercised 105k Options (OE) of NEWAMSTERDAM PHARMA CO N V for $11.17 on 7/20, and Sold Them All urn:uuid:079d2c03-67f1-4f94-5926-26871ed32c79 2026-07-22T16:05:04-04:00