$ATRA SEC Filings

Filing Filed On
OWNERSHIP DOCUMENT 05 Sep 2024
3 09 Jun 2023
3 09 Jun 2023
3 09 Jun 2023
3 07 Apr 2023
FORM 3 16 Dec 2022
FORM 3 10 Aug 2021
FORM 3 SUBMISSION 19 May 2020
FORM 3 SUBMISSION 12 May 2020
FORM 3 SUBMISSION 30 Apr 2020
FORM 3 SUBMISSION 21 Apr 2020
FORM 3 SUBMISSION 19 Feb 2020
FORM 3 SUBMISSION 25 Jun 2019
FORM 3 SUBMISSION 12 Sep 2018
FORM 3 SUBMISSION 07 Jun 2018
FORM 3 SUBMISSION 07 May 2018
FORM 3 SUBMISSION 09 Apr 2018
FORM 3 SUBMISSION 11 May 2017
FORM 3 SUBMISSION 03 Apr 2017
FORM 3 SUBMISSION 25 Nov 2015