17 C.F.R. § 203.6
Transcripts, if any, of formal investigative proceedings shall be recorded solely by the official reporter, or by any other person or means designated by the officer conducting the investigation. A person who has submitted documentary evidence or testimony in a formal investigative proceeding shall be entitled, upon written request, to procure a copy of his documentary evidence or a transcript of his testimony on payment of the appropriate fees: Provided, however, That in a nonpublic formal investigative proceeding the Commission may for good cause deny such request. In any event, any witness, upon proper identification, shall have the right to inspect the official transcript of the witness' own testimony.
17 C.F.R. §203.6
15 U.S.C. 78d-1