James N. Topper - Insider Trading & Ownership

Location
550 Hamilton Avenue, Suite 100, Palo Alto, CA
Summary
The estimated net worth of James N. Topper is at least $183M dollars as of September 17, 2025. James N. Topper is the Director of NewAmsterdam Pharma Co N.V. and owns shares of NewAmsterdam Pharma Co N.V. (NAMS) stock worth about $164M. James N. Topper is the Director, 10%+ Owner of Phathom Pharmaceuticals, Inc. and owns shares of Phathom Pharmaceuticals, Inc. (PHAT) stock worth about $19.6M. James N. Topper is the Director, 10%+ Owner of ANAPTYSBIO, INC and owns shares of ANAPTYSBIO, INC (ANAB) stock worth about $85.1K.
Signature
/s/ Steve R. Bailey, Attorney-in-Fact For James N. Topper
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Ownership of James N. Topper

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
NAMS, NAMSW NewAmsterdam Pharma Co N.V. Director $164M +$405K +0.25% Sep 15, 2025
PHAT Phathom Pharmaceuticals, Inc. Director, 10%+ Owner $19.6M +$192K +0.99% Jun 3, 2025
ANAB ANAPTYSBIO, INC Director, 10%+ Owner $85.1K Jan 6, 2023
ALPN ALPINE IMMUNE SCIENCES, INC. Director $0 May 18, 2024

Insider Transactions Reported by James N. Topper:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.