The Term Sheet: Startup funding roundup for September 2025

Copy of Lighttable0422 scaled

From left: Ben Waters, Paul Zeckser and Dan Becker founded LightTable in 2024. (Courtesy LightTable)

Funding for Colorado startups is heating up as the weather gets colder.

Fledgling companies in the Centennial State tallied $181 million in September across 27 deals, SEC Form D filings show.

That’s up from the $139.5 million raised from 26 startups in August but down from the $257.4 million 28 businesses garnered in July.

Nine Denver-based startups pulled in $91 million while five Boulder-based companies took in $26 million. Thirteen businesses elsewhere in the Centennial State raised $64 million.

You can view our sortable spreadsheet, which lists every September Form D, here.

BusinessDen defines a startup as a business that’s less than 10 years old. Real estate ventures and funds are excluded. 

Here are some September highlights from BusinessDen’s startup coverage:

Techstars Boulder finds leader

bio pic harnoy flatirons big e1758569964477

Shay Har-Noy will welcome the first cohort to the Techstars Boulder accelerator in about a year. (Courtesy Shay Har-Noy)

Shay Har-Noy was tapped last month to lead the accelerator’s revival in the foothills. The startup veteran is on the investor circuit, looking to raise money to invest in and coach upward of 40 startups during the next four years.

“I want this thing to exist really badly here in Colorado. It had such an impact on me, an impact on founders and the larger tech ecosystem here,” he said of the three-month-long program. “So instead of complaining that it’s not here, I’m being the change I want to see.”

Developing AI for developers

LightTable AI wants to cut down on costs and speed up the building process. The Denver startup raised $6 million to do just that.

“The peer review process takes weeks and weeks, and sometimes more than a month,” CEO Paul Zeckser said. “We can do it in 30 minutes. It’s faster and better and we can deliver this at a lower cost.”

Odds and ends

Denver kidney-care firm Strive Health reported it raised a $300 million round and secured $250 million in debt financing last month, bringing its total funding to $700 million since its 2018 founding. New Enterprise Associates led the raise with participation from CVS Health Ventures, CapitalG, Echo Health Ventures, Town Hall Ventures and Redpoint. New investors included funds and accounts managed by affiliates of BlackRock Inc. Hercules Capital led the debt financing. 

Denver metabolic digital health company Virta Health is eyeing an IPO next year, according to Axios. Its latest valuation was $2.1 billion, the outlet reported.

Copy of Lighttable0422 scaled

From left: Ben Waters, Paul Zeckser and Dan Becker founded LightTable in 2024. (Courtesy LightTable)

Funding for Colorado startups is heating up as the weather gets colder.

Fledgling companies in the Centennial State tallied $181 million in September across 27 deals, SEC Form D filings show.

That’s up from the $139.5 million raised from 26 startups in August but down from the $257.4 million 28 businesses garnered in July.

Nine Denver-based startups pulled in $91 million while five Boulder-based companies took in $26 million. Thirteen businesses elsewhere in the Centennial State raised $64 million.

You can view our sortable spreadsheet, which lists every September Form D, here.

BusinessDen defines a startup as a business that’s less than 10 years old. Real estate ventures and funds are excluded. 

Here are some September highlights from BusinessDen’s startup coverage:

Techstars Boulder finds leader

bio pic harnoy flatirons big e1758569964477

Shay Har-Noy will welcome the first cohort to the Techstars Boulder accelerator in about a year. (Courtesy Shay Har-Noy)

Shay Har-Noy was tapped last month to lead the accelerator’s revival in the foothills. The startup veteran is on the investor circuit, looking to raise money to invest in and coach upward of 40 startups during the next four years.

“I want this thing to exist really badly here in Colorado. It had such an impact on me, an impact on founders and the larger tech ecosystem here,” he said of the three-month-long program. “So instead of complaining that it’s not here, I’m being the change I want to see.”

Developing AI for developers

LightTable AI wants to cut down on costs and speed up the building process. The Denver startup raised $6 million to do just that.

“The peer review process takes weeks and weeks, and sometimes more than a month,” CEO Paul Zeckser said. “We can do it in 30 minutes. It’s faster and better and we can deliver this at a lower cost.”

Odds and ends

Denver kidney-care firm Strive Health reported it raised a $300 million round and secured $250 million in debt financing last month, bringing its total funding to $700 million since its 2018 founding. New Enterprise Associates led the raise with participation from CVS Health Ventures, CapitalG, Echo Health Ventures, Town Hall Ventures and Redpoint. New investors included funds and accounts managed by affiliates of BlackRock Inc. Hercules Capital led the debt financing. 

Denver metabolic digital health company Virta Health is eyeing an IPO next year, according to Axios. Its latest valuation was $2.1 billion, the outlet reported.

This story is for our paid subscribers only. Please become one of the thousands of BusinessDen members today!

Your subscription has expired. Renew now by choosing a subscription below!

For more informaiton, head over to your profile.

Profile


SUBSCRIBE NOW

 — 

 — 

 — 

TERMS OF SERVICE:

ALL MEMBERSHIPS RENEW AUTOMATICALLY. YOU WILL BE CHARGED FOR A 1 YEAR MEMBERSHIP RENEWAL AT THE RATE IN EFFECT AT THAT TIME UNLESS YOU CANCEL YOUR MEMBERSHIP BY LOGGING IN OR BY CONTACTING [email protected].

ALL CHARGES FOR MONTHLY OR ANNUAL MEMBERSHIPS ARE NONREFUNDABLE.

EACH MEMBERSHIP WILL ONLY FUNCTION ON UP TO 3 MACHINES. ACCOUNTS ABUSING THAT LIMIT WILL BE DISCONTINUED.

FOR ASSISTANCE WITH YOUR MEMBERSHIP PLEASE EMAIL [email protected]




Return to Homepage

POSTED IN Startups

Editor's Picks

Comments are closed.