Footnotes are revealing. Here's the first of 7. FYI rest 6 are similar looking :

"1. On April 14, 2021, Union Square Ventures 2012 Fund, LP ("USV 2012 Fund") distributed, for no consideration, 7,702,041 shares of the Issuer's Class A Common Stock to its limited partners and to Union Square 2012 GP, L.L.C., the general partner of USV 2012 Fund, representing each such partner's pro rata interest in such shares. On the same date, Union Square 2012 GP, L.L.C. distributed, for no consideration, the shares it received in the distribution to its members, representing each such member's pro rata interest in such shares"