Live Trump is digging in after China retaliated to his tariffs. See the latest updates. CLGN • SEC Gov • Apr 4, 2024 CLGN : 20-F : Periodic Financial Reports Download Exhibits Related Filings from CLGN 20-F EX-12.1 EX-12.2 EX-13.1 EX-13.2 EX-15.1 EX-4.3 EX-4.4