About Great Fission
Great Fission is a private company based in San Francisco, California, incorporated in 2026 in Delaware. It has reported $8,020,000 raised in one offering on Form D since October 2026. Its chief executive is Lewis Black.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Jul 4, 2026 | Oct 6, 2026 | $8,020,000of $9.0M target | 11 | $729K | Simple Agreement for Future EquityRule 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 Great Fission's Form D filed Oct 6, 2026.
LB
Lewis Black
Chief Executive Officer and director