Box score
Halcyon Carbon, Inc.
Reported $21M sold in a new Form D filed March 11, 2026 (San Francisco, California).
- Biggest raise
- $21M filed Mar 11, 2026
- League
- Tech Other Technology
- Based in
- San Francisco, California
- Season rank
- #315 of 2,760 in the Tech League; #1001 of 10,745 overall (2026)
- Incorporated
- 2023
- Entity
- Corporation
Form D filings since 2024 1
| Filed | Form | Sold | Offering | Filing |
|---|---|---|---|---|
| 2026-03-11 | New notice | $21M | $21M | SEC |
Amounts are cumulative for each offering as of the filing date, so an amendment can repeat or update an earlier figure; filings are not added together. CIK 2118358.
Similar raises, 2026
| # | Company | League | Raised |
|---|---|---|---|
| 1 | Quaestor Technologies, Inc. | Tech | $21.3M |
| 2 | Copilot Labs, Inc. \ DE rookie | Tech | $21.2M |
| 3 | Lone Palm Labs, Inc. rookie | Tech | $21.1M |
| 4 | Alpha Design AI, Inc. | Tech | $21M |
| 5 | Ember LifeSciences, Inc. rookie | Tech | $20.9M |
| 6 | Dewdrop Labs Inc rookie | Tech | $20M |