Form D · Other Technology
ClearSign Technologies Corp
Tulsa, OK · CIK 0001434524
Offering snapshot reported Jul 31, 2026 · SEC filing
- Reported sold
- $1.77M Offering amount: $1.77M
- Investors reported
- 1 Form D · investor count
- Minimum accepted
- $0 Reported outside-investor minimum
- First sale
- Jul 22, 2026 As reported in this filing
What changed?
Latest filing versus its linked predecessor, where available.
No comparable changes in the displayed metrics.
Filing history
Scroll to see all columns →
| Filed | Filing type | Reported sold | Change vs linked filing | Investors | Source |
|---|---|---|---|---|---|
| Jul 31, 2026 | Initial | $1,770,000 | No comparison | 1 | SEC filing |
| Jul 9, 2024 | Initial | $4,341,025 | No comparison | 1 | SEC filing |
| May 8, 2024 | Initial | $4,999,684 | No comparison | 1 | SEC filing |
| Oct 2, 2020 | Initial | $1,308,850 | No comparison | 1 | SEC filing |
| Jul 23, 2018 | Initial | $11,730,472 | No comparison | 1 | SEC filing |
| Mar 18, 2011 | Initial | $100,000 | No comparison | 1 | SEC filing |
| Feb 3, 2011 | Amendment | $1,056,042 | No comparison | 25 | SEC filing |
| May 5, 2008 | Paper | Not reported | No comparison | Not reported | SEC filing |
Offering details
- Securities
- Equity
- Exemptions
- 06b
- Duration over one year
- No
- Business combination
- No
- Sales commissions
- $0
- Finders' fees
- $0
- Form D file number
- 021-592864
Source: Form D, filed Jul 31, 2026. Minimum accepted may differ from a standard advertised minimum.
Fund connections
No confirmed ADV fund connection is available for this issuer.
People & organizations
Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.
| Name | Reported role |
|---|---|
| Louis J Basenese | Director |
| Lon E. Bell | Director |
| Catharine De Lacy | Director |
| Colin James Deller | Director, Executive |
| Anthony Di Giandomenico | Director |
| Brian Fike | Executive |
| David Goodson | Director, Executive |
| Brent Hinds | Executive |
| Robert T. Hoffman Sr. | Director |
| Scott Isaacson | Director |
| David M. Maley | Director |
| Susanne Meline | Director |
| Geoffrey Osler | Director, Executive |
| Jeffrey Ott | Director |
| Bruce Alan Pate | Director |
| Stephen E. Pirnat | Director, Executive |
| Richard Rutkowski | Director, Executive |
| Judith S. Schrecker | Director |
| Todd Gil Silva | Director |
Issuer details
Industry: Other Technology (See others in industry)
Address:
8023 E. 63 Rd Place Suite 101
Tulsa, OK, 74133
Tulsa, OK, 74133