Gulfstream IV N30DJ up from Sheboygan and appears headed for Seattle. Flight plan hidden on Flight Aware. Owner 90PC AIR HOLDINGS LLC (WILMINGTON DE). Found this interesting thread about a flight to Ukraine.

90pc Air Holdings, LLC's G-IV N30DJ 9/3-9/4/20 LA-San Diego (~1h 50m)-Halifax-Kyiv #Ukraine 9/6/20 Kyiv-Inverness 9/10/20 Inverness-Kyiv

US registered private jets flying to Ukraine are pretty rare.

90pc Air Holdings LLC was created only 3 months ago on 6/23/20. It's 'parent company' 90pc Ent. LLC was created 12 days earlier on 6/11/20. 90pc Ent. is also 'manager' of H Farm LLC which was created 4 days after 90pc Ent. (all 3 -eResidentAgent)

https://threadreaderapp.com/thread/1303785559207415810.html

https://www.planelogger.com/Aircraft/Registration/N30DJ/1022833