Boom Supersonic raised $300 million at a $1.5 billion valuation. (Courtesy Boom)
Colorado startup funding has stayed steady as the holiday season approaches.
Fledgling companies tallied $180 million in November across 24 deals, SEC Form D filings show.
That’s down from the $1.2 billion in October and last November. Those figures, however, were carried by significant rounds from Denver-based Crusoe, which makes data centers for artificial intelligence firms like OpenAI.
Last month, six Denver-based startups pulled in $54 million while 10 Boulder-based companies took in $91 million. Eight businesses elsewhere in the state raised $35 million.
You can view our sortable spreadsheet, which lists every November Form D, here.
BusinessDen defines a startup as a business that’s less than 10 years old and excludes real estate ventures and funds.
Here are some highlights from BusinessDen’s recent startup coverage:
Boom Supersonic raises $300 million at $1.5 billion valuation
The Centennial-based business also rolled out a new branch of the company: building turbines to power artificial intelligence servers for data centers. The initial customer? Crusoe, which expects its first of 29 eventual turbines to be delivered in early 2027.
Inspirato CFO resigns amid lackluster quarterly report
Michael Arthur, the luxury travel company’s chief financier since October 2024, resigned in early November after a down Q3 report. CEO Payam Zamani is in the midst of searching for the third CFO of his 16-month tenure.
Odds and ends
Ridley, the Boulder-based startup using artificial intelligence to better sell your house, announced a $6.4 million raise led by New York venture firm Fifth Wall.
“It’s a task-oriented, actionable list that has a lot of cool stuff happening behind the scenes,” entrepreneur Mike Chambers told BusinessDen in October. “For you, it’s as simple as hitting a button.”
In Denver, York Space Systems, which was founded in 2012 and is the jersey patch sponsor for the Rockies, filed for an initial public offering after a 59% revenue spike in the first three quarters of 2025.
In Berthoud, Ursa Major Technologies, a rocket engine startup, raised $100 million at a $600 million valuation, Bloomberg reported.
Orion, a Denver risk intelligence startup, also raised a $3.5 million round last month, according to Axios.
Boom Supersonic raised $300 million at a $1.5 billion valuation. (Courtesy Boom)
Colorado startup funding has stayed steady as the holiday season approaches.
Fledgling companies tallied $180 million in November across 24 deals, SEC Form D filings show.
That’s down from the $1.2 billion in October and last November. Those figures, however, were carried by significant rounds from Denver-based Crusoe, which makes data centers for artificial intelligence firms like OpenAI.
Last month, six Denver-based startups pulled in $54 million while 10 Boulder-based companies took in $91 million. Eight businesses elsewhere in the state raised $35 million.
You can view our sortable spreadsheet, which lists every November Form D, here.
BusinessDen defines a startup as a business that’s less than 10 years old and excludes real estate ventures and funds.
Here are some highlights from BusinessDen’s recent startup coverage:
Boom Supersonic raises $300 million at $1.5 billion valuation
The Centennial-based business also rolled out a new branch of the company: building turbines to power artificial intelligence servers for data centers. The initial customer? Crusoe, which expects its first of 29 eventual turbines to be delivered in early 2027.
Inspirato CFO resigns amid lackluster quarterly report
Michael Arthur, the luxury travel company’s chief financier since October 2024, resigned in early November after a down Q3 report. CEO Payam Zamani is in the midst of searching for the third CFO of his 16-month tenure.
Odds and ends
Ridley, the Boulder-based startup using artificial intelligence to better sell your house, announced a $6.4 million raise led by New York venture firm Fifth Wall.
“It’s a task-oriented, actionable list that has a lot of cool stuff happening behind the scenes,” entrepreneur Mike Chambers told BusinessDen in October. “For you, it’s as simple as hitting a button.”
In Denver, York Space Systems, which was founded in 2012 and is the jersey patch sponsor for the Rockies, filed for an initial public offering after a 59% revenue spike in the first three quarters of 2025.
In Berthoud, Ursa Major Technologies, a rocket engine startup, raised $100 million at a $600 million valuation, Bloomberg reported.
Orion, a Denver risk intelligence startup, also raised a $3.5 million round last month, according to Axios.
