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Insider Trading & Ownership of William K. Heiden

Location
Waltham, MA
Summary
The estimated net worth of William K. Heiden is at least $500,606 dollars as of 21 Aug 2025. William K. Heiden is the Director of MACROGENICS INC and owns shares of MACROGENICS INC (MGNX) stock worth about $332.9K. William K. Heiden is the Director of Atara Biotherapeutics, Inc. and owns shares of Atara Biotherapeutics, Inc. (ATRA) stock worth about $167.7K.
Signature
/s/ Beth A. Smith, Attorney-in-fact
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Ownership of William K. Heiden

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
MGNX MACROGENICS INC Director $332,865 +$150,515 +83% 19 Aug 2025
ATRA Atara Biotherapeutics, Inc. Director $167,741 10 Jun 2025

Insider Transactions Reported by William K. Heiden:

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.