Every new Connecticut business filing, every daySemperfli
John Lynch, Principal
Semperfli is a small business based in Durham, Connecticut that sells fly tying materials—threads, dubbing, and fibers—to fly tyers worldwide. The business operates as an online retailer serving a niche hobbyist market.
Filed May 5, 2026 · Durham, CT · Middlesex County
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Connecticut Secretary of the State (business.ct.gov) · Entity 3437318 · Retrieved July 26, 2026
About Semperfli
Semper Fly Limited Liability Company filed in Connecticut on May 5, 2026, with a principal address in Durham. The company is in the fly fishing supplies category, specifically fly tying materials, and is owned by John Lynch as Principal. Its domain was registered on November 30, 2009, over 6,000 days before filing, and the website matched the filing name and address. The company was first seen by DayOneLead 82 days after filing. We estimate annual revenue between $1 million and $10 million and 6 to 25 employees. No annual report or EIN on file yet.
- Domain registered 16 years before the company filed, a strong sign of pre-existing business activity.
- Filed in Connecticut with a principal address in Durham.
- Owner John Lynch is listed as Principal and has 14 other entities with the same owner name.
- Website identity confirmed against the filing name and address.
- First seen by DayOneLead 82 days after filing.
- No annual report or EIN on file yet.
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 8 new businesses registered in Durham in May 2026, and the only fly fishing supplies 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.
Officers / Authorized Persons
Frequently Asked Questions
When was Semperfli registered?
Semperfli was registered as LLC on May 5, 2026 in Connecticut.
Where is Semperfli located?
Semperfli is based in Durham, CT, 06422-2214, in Middlesex County.
What type of business is Semperfli?
Semperfli is classified as a fly fishing supplies business (fly tying materials).
Does Semperfli have an EIN on file?
No EIN was found on file for Semperfli at the time of registration.
Who Sells to This Business
Based on the business category, these service providers typically target this type of business.
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