Every new Colorado business filing, every dayCorestone Holdings
PAUL LEONARD ENGERMAN, Registered Agent
Corestone Holdings Corp is a Colorado-based holding company. Its principal address is in Castle Pines, and the associated website Cornerstone Holdings operates from Greenwood Village, CO, focusing on selective investments into operating businesses and real estate.
Filed September 29, 2025 · Castle Pines, CO · Douglas County
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Colorado Secretary of State · Entity 20258079432 · Retrieved June 13, 2026
About Corestone Holdings
Corestone Holdings Corp is a Colorado private investment holding company filed on September 29, 2025, by Paul Leonard Engerman, who filed personally as the registered agent. Its domain was registered on April 20, 1999, over 26 years before the filing, through Network Solutions, and the modern WordPress site was live when we first saw it on June 13, 2026. The business has a brick-and-mortar footprint. No annual report or EIN on file yet. We estimate annual revenue between $10 million and $50 million and 6 to 25 employees.
- Domain registered 9,659 days before the filing, indicating a very long-established web presence.
- Filed personally by the owner, who is also the registered agent.
- We estimate revenue between $10 million and $50 million and 6 to 25 employees.
- Brick-and-mortar footprint suggests a physical operation.
- Website built with WordPress and assessed as modern.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 24, 2026.
One of 30 new businesses registered in Castle Pines in September 2025, and the only holding company business registered there that month.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was Corestone Holdings registered?
Corestone Holdings was registered as Corp on September 29, 2025 in Colorado.
Where is Corestone Holdings located?
Corestone Holdings is based in Castle Pines, CO, 80108, in Douglas County.
What type of business is Corestone Holdings?
Corestone Holdings is classified as a holding company business (private investment).
Does Corestone Holdings have an EIN on file?
No EIN was found on file for Corestone Holdings at the time of registration.
Who Sells to This Business
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