The transcripts and other documents related to the Ukraine impeachment inquiry are available at:
https://www.justsecurity.org/67076/public-document-clearinghouse-ukraine-impeachment-inquiry/
As reported by blaze on DU:
https://www.democraticunderground.com/100212666250
Examples:
Hill Deposition Excerpts released Nov 8
(Full transcript also available there)
LTC Vindman Deposition Excerpts released Nov. 8
(Full transcript also available there)