About Just Cobuild
Just Cobuild is a private company based in San Francisco, California, incorporated in 2025 in Delaware. It has reported $50,000 raised in one offering on Form D since October 2025. Its chief executive is Williams Hay Jr.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Sep 18, 2025 | Oct 10, 2025 | $50,000target not set | 1 | $50,000 | "Simple Agreement for Future Equity (SAFE) ? post-money"Rule 506(b) | Form D ↗ |
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Leadership Team
Executive officers and directors listed on Just Cobuild's Form D filed Oct 10, 2025.
WK
Wojciech Kocjan
Cofounder and director
WJ