Verified Nov 2026
Other
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Cockeysville, Maryland
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Since 1982
Tessco LLC is a distributor and solutions provider for wireless infrastructure, headquartered in Cockeysville, Maryland, and founded in 1982. The company employs roughly 500 to 1,000 people and reports revenue in the $250 to $500 million band, which is an estimate. It is privately held and serves the automotive, electric-vehicle, plumbing-hardware, and industrial-equipment sectors. In 2026 it was awarded a Sourcewell Cooperative Purchasing Contract in the wireless communications category, enabling sales to public agencies across North America.
Tessco LLC at a glance
Revenue
$250-500M
Est. band
Employees
500-1,000
Founded
1982
Headquarters
Cockeysville, Maryland
Certifications
ISO 9001
Industries
Automotive
Electric Vehicles
Plumbing & Hardware
Industrial Equipment
STABILITY SIGNALS
Established & active
44 years in operation (founded 1982).
Holds ISO 9001 certification(s) per public sources.
Overview
Tessco LLC is a distributor and solutions provider for wireless infrastructure, headquartered in Cockeysville, Maryland, and founded in 1982. The company employs roughly 500 to 1,000 people and reports revenue in the $250 to $500 million band, which is an estimate. It is privately held and serves the automotive, electric-vehicle, plumbing-hardware, and industrial-equipment sectors. In 2026 it was awarded a Sourcewell Cooperative Purchasing Contract in the wireless communications category, enabling sales to public agencies across North America.
At a glance
Attribute | Detail |
|---|---|
Founded | 1982 |
Headquarters | Cockeysville, Maryland |
Employees | 500-1,000 |
Revenue | $250-500M (estimated) |
Certifications | ISO 9001 |
What Tessco LLC makes
The company is certified to ISO 9001 and offers products including electronics and assemblies, covering wireless infrastructure equipment and related technical services.
Products and capabilities described on the company's own site include Assembly, Electronics (source: tessco.com).
Certifications
Tessco LLC is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 9001 — tessco.com
Latest developments
2026-09-30 — TESSCO Technologies Incorporated (via Public) / Airspan Has Acquired Several Cambium Product Lines & What That Means for You (publicnow.com)
2026-07-20 — Did you know that Tessco has been awarded a Sourcewell Cooperative Purchasing Contract in the wireless communications category? This allows Tessco to expand its offerings to public agencies across North America. | Tessco LLC (linkedin.com)
2026-06-16 — Say hello to Tessco’s new Vice President of Business Development, Michael Shumate! He brings over 20 years of leadership experience in wireless infrastructure and business operations. | Tessco LLC (linkedin.com)
2026-05-13 — TESSCO Technologies Incorporated (via Public) / ADRF Names Tessco as a Preferred Distributor of Commercial and Public Safety Wireless Solutions (publicnow.com)
2026-03-25 — Breaking News - Tessco’s contract with the State of Washington – Illumination, Traffic Signal, & Intelligent Transportation Systems Equipment – has been renewed! For more information about this and other government contracts … | Tessco LLC (linkedin.com)
2026-01-19 — SOLiD BARS™ Platform Now Available Through Tessco Nationwide Distribution - Tessco (tessco.com)
Company details
Tessco is privately held, and its record shows a renewed State of Washington contract for traffic signal and intelligent transportation systems equipment. Tessco LLC was founded in 1982, has an estimated 500-1,000 employees, and is headquartered in Cockeysville, Maryland. On the LightSource stability read it is rated "Established & active": 44 years in operation (founded 1982). Holds ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Tessco LLC do?
Tessco LLC is a distributor and solutions provider for wireless infrastructure, headquartered in Cockeysville, Maryland, and founded in 1982. The company employs roughly 500 to 1,000 people and reports revenue in the $250 to $500 million band, which is an estimate. It is privately held and serves the automotive, electric-vehicle, plumbing-hardware, and industrial-equipment sectors. In 2026 it was awarded a Sourcewell Cooperative Purchasing Contract in the wireless communications category, enabling sales to public agencies across North America.
Where is Tessco LLC headquartered?
Tessco LLC is headquartered in Cockeysville, Maryland (11126 McCormick Road, Cockeysville, Maryland, 21031).
When was Tessco LLC founded?
Tessco LLC was founded in 1982.
How big is Tessco LLC?
Tessco LLC has an estimated 500-1,000 employees, with revenue in the $250-500M range (estimated).
What certifications does Tessco LLC hold?
Tessco LLC lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
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Last verified Nov 2026. Is this your company? Request a correction.
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