Mobile Version

Symbol	Relationship	Date	Transaction	Cost	# Shares	Value($)	Total Shares	Form 4
ATRA	SVP, GC & Secretary	May 17, 2022	Sale	$5.32	3,223	17,134	134,641	May 19, 2022, 05:20 PM
ATRA	SVP, GC & Secretary	Mar 01, 2022	Sale	$9.86	2,577	25,400	138,070	Mar 03, 2022, 07:02 PM
ATRA	SVP, GC & Secretary	Nov 16, 2021	Sale	$17.12	2,124	36,356	87,540	Nov 18, 2021, 05:53 PM
ATRA	SVP, GC & Secretary	Aug 17, 2021	Sale	$12.53	2,080	26,067	89,664	Aug 19, 2021, 07:35 PM
ATRA	SVP, GC & Secretary	May 18, 2021	Sale	$14.55	5,681	82,659	91,744	May 20, 2021, 04:32 PM

Desktop Version

Symbol	Relationship	Date	Transaction	Value($)
ATRA	SVP, GC & Secretary	May 17, 2022	Sale	17,134
ATRA	SVP, GC & Secretary	Mar 01, 2022	Sale	25,400
ATRA	SVP, GC & Secretary	Nov 16, 2021	Sale	36,356
ATRA	SVP, GC & Secretary	Aug 17, 2021	Sale	26,067
ATRA	SVP, GC & Secretary	May 18, 2021	Sale	82,659