Heiden William K

of MGNX

Director of ATRA

Stock Insider Trading Activity of Heiden William K

N/A

Buy

MGNX Aug 20, 2025

Avg Cost/Share

$1.49

49,500

Total Value

$73,755.00

Owned After

111,000

SEC Form 4

N/A

Buy

MGNX Aug 19, 2025

Avg Cost/Share

$1.52

50,500

Total Value

$76,760.00

Owned After

111,000

SEC Form 4

Director

Buy

ATRA Nov 10, 2023

Avg Cost/Share

$0.25

100,000

Total Value

$25,330.00

Owned After

209,000

SEC Form 4

Insider	Ticker	Relationship	Date	Transaction	Avg Cost	Shares	Total Value	Owned After	SEC Forms
HEIDEN WILLIAM K	MGNX	N/A	Aug 20, 2025	Buy	$1.49	49,500	$73,755.00	111,000	Form
HEIDEN WILLIAM K	MGNX	N/A	Aug 19, 2025	Buy	$1.52	50,500	$76,760.00	111,000	Form
HEIDEN WILLIAM K	ATRA	Director	Nov 10, 2023	Buy	$0.25	100,000	$25,330.00	209,000	Form