Pretty sure they know. See what I hilited below
Costello indictment available as Exhibit A in document 159 of the CANN/CCSAC court case.
Interesting reading. By court order, and under penalty of perjury, Costello was required to state what of the marijuana company's money was held in PBC/GRN/Costello bank account(s) as of 9/9/2022. Costello claimed $2,923,858.13. The indictment states what was in the checking account as of 9/9 was $15.35.
It describes multiple coordinated misinformation pump and dump schemes coordinated by Costello involving DCGD/GRNF, RVDO/HPST, RMSL, CLSI, FTXP. He requested and paid for twitter pumping by an individual who's initials are given in the indictment. Hundreds of tweets were made, for which Costello paid the twitter pumper over $35,000. Others are mentioned by their initials, including one who was instructed by Costello to take a moderator position for RVDO on a "public message board."
He also defrauded public investors by touting his "GRN Holding" but selling them shares in his private Washington GRN Holding, not the Nevada publicly traded GRN Holding