As of November 10, 2026, 25 energy and climate companies in Denver and Boulder have filed a new SEC Form D on record, reporting $741.07M sold. 1 filed in the last 90 days, against 0 in the 90 days before. The biggest raise on record here is Koloma, Inc., at $245.74M (SEC Form D, October 21, 2026).
1 energy and climate companies in Denver and Boulder filed in the last 90 days, against 0 in the 90 days before. The biggest raise on record here is Koloma, Inc. at $245.74M.
Companies raising per week
The last 90 days
| Based | People named | |||
|---|---|---|---|---|
| Centennial Water Holdings, LLC first filing | $55.41M | 2026-10-21 | Denver, CO | Ryan O'Shaughnessy, Mike O'Shaughnessy +1 |
First-time filers, last 90 days
Centennial Water Holdings, LLC.
Everything on record
| Based | People named | |||
|---|---|---|---|---|
| Koloma, Inc. | $245.74M | 2024-02-09 | Denver, CO | Peter Johnson, Jeff Knupp +6 |
| Tendril Holdings, LLC first filing | $101.88M | 2024-04-26 | Boulder, CO | Luis D'Acosta, Michelle Anastasi +13 |
| ION Clean Energy, Inc. first filing | $70M | 2024-04-11 | Boulder, CO | Alfred Brown, Manjae Han +2 |
| Ludvik Electric Co first filing | $60M | 2025-10-31 | Lakewood, CO | Giles Richard |
| Centennial Water Holdings, LLC first filing | $55.41M | 2026-10-21 | Denver, CO | Ryan O'Shaughnessy, Mike O'Shaughnessy +1 |
| Koloma, Inc. | $52.38M | 2024-10-15 | Denver, CO | Peter Johnson, Jeff Knupp +6 |
| Cicada Logistics LLC first filing | $24.11M | 2024-03-13 | Golden, CO | Nicholas D'Onofrio |
| NovoHydrogen Holdings LLC first filing | $23.66M | 2023-09-25 | Centennial, CO | Matthew McMonagle |
| Tendril Holdings, LLC | $15M | 2025-03-28 | Boulder, CO | Luis D'Acosta, Michelle Anastasi +12 |
| Endolith Inc. | $13.84M | 2025-11-12 | Westminster, CO | Elizabeth Percak-Dennett, Guy Vidra +2 |
| Odyssey Energy Solutions, Inc. first filing | $12.36M | 2023-05-18 | Boulder, CO | Emily McAteer, Piyush Mathur +2 |
| Odyssey Energy Solutions, Inc. | $11.28M | 2024-12-31 | Boulder, CO | Emily McAteer, Piyush Mathur +2 |
| COWBOY CLEAN FUELS, LLC | $9.37M | 2024-05-20 | Greenwood Village, CO | Ryan Waddington, Michael Urynowicz +1 |
| Elephant Energy, Inc. | $6.50M | 2025-07-18 | Boulder, CO | David Richardson, Joshua Lake +2 |
| Endolith Inc. first filing | $5.31M | 2024-04-05 | Westminster, CO | Elizabeth Percak-Dennett, Mojtaba Karimi +2 |
| COWBOY CLEAN FUELS, LLC | $4.34M | 2025-10-15 | Greenwood Village, CO | Preston Anderson, Ryan Waddington +2 |
| COWBOY CLEAN FUELS, LLC | $3.70M | 2023-12-28 | Greenwood Village, CO | Ryan Waddington, Michael Urynowicz +1 |
| Elephant Energy, Inc. first filing | $3.43M | 2024-04-11 | Boulder, CO | David Richardson, Joshua Lake +1 |
| RenewWest, Inc. first filing | $3.20M | 2022-11-14 | Denver, CO | John Cleland, R. Bradley Forth +3 |
| STARFIRE ENERGY INC first filing | $3.03M | 2024-01-11 | Denver, CO | Jennifer Beach, Joseph Beach +5 |
| Source Energy Co first filing | $3M | 2023-05-25 | Longmont, CO | Philip Keller, Bryan Mazor +1 |
| Uppermost Company, LLC first filing | $2.50M | 2025-04-07 | Denver, CO | Chris de Diego |
| Elephant Energy, Inc. first filing | $2.38M | 2024-04-11 | Boulder, CO | David Richardson, Joshua Lake +1 |
| Green Steel Enviornmental, Inc. first filing | $1.74M | 2025-10-14 | Boulder, CO | Jonathan Teaford, Jonathan Jonis +1 |
| Barrell Lithium, LLC first filing | $1.32M | 2024-12-16 | Denver, CO | Kirk Barrell |
| COWBOY CLEAN FUELS, LLC first filing | $1.25M | 2022-11-14 | Greenwood Village, CO | Ryan Waddington, Michael Urynowicz |
| COWBOY CLEAN FUELS, LLC | $1.25M | 2023-01-03 | Greenwood Village, CO | Ryan Waddington, Michael Urynowicz +1 |
| Starlight Software Solutions, LLC first filing | $1.11M | 2024-10-04 | Denver, CO | Luke Walker, Burton McGillivray +3 |
| Copper Labs, Inc first filing | $1.07M | 2023-05-30 | Boulder, CO | Dan Forman, Jeff Mathews +3 |
| PSG Operating Company, LLC first filing | $550K | 2023-02-24 | Denver, CO | Windham Loopesko, Christian Clem +1 |
| Intrepid Energy, LLC first filing | $126K | 2023-11-27 | Westminster, CO | Steven Curtis |
| Fossil Creek Minerals LLC first filing | $80K | 2025-11-20 | Denver, CO | Andrew Haney, Christopher Tincher |
| BREK Electronics Corp. | $50K | 2024-12-23 | Broomfield, CO | Suryakala Majeti |
| BREK Electronics Corp. first filing | $50K | 2024-05-10 | Broomfield, CO | Suryakala Majeti |
| GeoSolar Technologies, Inc. | $40K | 2024-01-11 | Denver, CO | A. Douglass |
| GeoSolar Technologies, Inc. first filing | $3K | 2023-01-27 | Denver, CO | A. Douglass |
| GeoSolar Technologies, Inc. first filing | $1K | 2023-01-27 | Denver, CO | A. Douglass |
| GeoSolar Technologies, Inc. | — | 2024-10-16 | Denver, CO | A. Douglass, Dar-Lon Chang +1 |
| Syrcuit Energy Solutions, Inc. first filing | — | 2024-05-15 | Denver, CO | Craig Rasmuson, Matthew Lauer +7 |
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How this list is built
Every company here filed a Form D with the SEC from this sector and metro. A Form D is the notice a company files when it sells shares or other securities without a public offering, so it catches seed rounds, small rounds and rounds that were never announced, alongside the large ones that make the news. Only new offerings by operating companies count: amendments, pooled investment funds, real estate vehicles and special purpose vehicles are left out, so each row is a company raising money for itself.
The amount shown is the total the filing reports as sold so far. Some filings report nothing sold yet; those rows show a dash and add nothing to the totals. "First filing" marks a company whose first Form D on record this is. Each company links to our page for the filing, or to the SEC's own copy, and the list can be copied as CSV for a spreadsheet.
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https://mentionfox.com/funding/energy-climate/denver-boulder