Every new Florida business filing, every dayMainStreet CFO
Rostislav Lonskiy, PST
MainStreet CFO provides AI-powered financial intelligence services including real-time dashboards, cash flow forecasting, and an AI CFO assistant. The business is located in St. Petersburg, Florida, as indicated by the principal address on the LLC filing.
Filed May 28, 2026 · St. Petersburg, FL · Pinellas County
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Florida Division of Corporations (Sunbiz) · Entity F26000003226 · Retrieved May 29, 2026
About MainStreet CFO
MAINSTREETCFO, INC. filed in Florida on May 28, 2026, as an active Financial Services company offering AI-Powered CFO Services. Officers include President Rostislav Lonskiy and Director Matthew Mcmullen. The company filed through T REGISTERED AGENT LLC as its registered agent. Its modern website matched the filing name and address, and we estimate revenue under $100K with 1 to 5 employees. An EIN is on file. The company shares its address with 7,485 other entities and its registered agent with 30,056 others.
- Filed through another company acting as registered agent (T REGISTERED AGENT LLC).
- Modern website confirmed the company’s name and address.
- We estimate revenue under $100K and 1-5 employees.
- An EIN is on file.
- Shares its address with 7,485 other entities and its registered agent with 30,056 others.
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 23, 2026.
One of 3,461 new businesses registered in St. Petersburg in May 2026, one of 14 financial services businesses.
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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.
Officers / Authorized Persons
Frequently Asked Questions
When was MainStreet CFO registered?
MainStreet CFO was registered as FORP on May 28, 2026 in Florida.
Where is MainStreet CFO located?
MainStreet CFO is based in St. Petersburg, FL, 33702, in Pinellas County.
What type of business is MainStreet CFO?
MainStreet CFO is classified as a financial services business (ai-powered cfo services).
Is MainStreet CFO still active?
According to the Florida Division of Corporations, MainStreet CFO's current record status is "active".
Does MainStreet CFO have an EIN on file?
Yes. MainStreet CFO has a federal Employer Identification Number (EIN) registered with its filing.
Who Sells to This Business
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