0001647639 2023-01-31 2023-01-31 0001647639 false 8-K 2023-01-31 Upstart Holdings, Inc. DE 001-39797 46-4332431 2950 S. Delaware Street Suite 300 San Mateo CA 94403 650 204-1000 false false false false Common Stock, par value $0.0001 per share UPST NASDAQ false