chill - a subpoena is not an indictment - seems this is a request for documents related to risk disclosure
https://www.sec.gov/Archives/edgar/data/1704303/000147793219000871/tulsa_1u.htm
They issue a grand jury subpoena just for some documents?
The Company recently received a grand jury subpoena from the United States Attorney’s Office for the Northern District of Georgia and a civil subpoena from the Securities and Exchange Commission, each seeking documents and other information concerning the Company. The Company has engaged counsel to respond to the subpoenas and intends to cooperate with the investigations.