Insiders · Profile

HEIDEN WILLIAM K

Director at MACROGENICS · Director at Atara Biotherapeutics. Filing since 10 Nov 2023. CIK 0001214939

MGNX MACROGENICS INC Director · 2 trades ATRA Atara Biotherapeutics, Inc. Director · 1 trade

Company

Date

Role

Action

Shares

Amount

Of holding

MGNX MACROGENICS INC

20 Aug 2025

Director

Bought

49,500

$73.76K

80.5%

MGNX MACROGENICS INC

19 Aug 2025

Director

Bought

50,500

$76.76K

459%

ATRA Atara Biotherapeutics, Inc.

10 Nov 2023

Director

Bought

100,000

$25.33K

91.7%

3 decisions on file.