Verified Nov 2026
Batteries & E-Mobility
·
Tanner, Alabama
·
Since 1997
Cornerstone Inc. is a detention equipment contractor headquartered in Tanner, Alabama, founded in 1997. It manufactures, furnishes, and installs security hollow metal products, detention locking hardware, and precast cells, and it integrates security electronics. The company employs roughly 200 to 500 people, has estimated annual revenue of $100 million to $250 million, and is privately held. It serves federal agencies, state and county governments, municipalities, and private facilities. In August 2026, it announced the appointment of Scott Edgecombe as president.
Cornerstone at a glance
Revenue
$100-250M
Est. band
Employees
200-500
Founded
1997
Headquarters
Tanner, Alabama
Import activity
1364
Industries
Automotive
Electric Vehicles
Electronics
Construction
Medical
Plumbing & Hardware
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
1364
Named foreign suppliers
50
Top origins
China · Taiwan · Belgium · India
Shared foreign counterparties do not establish that these companies buy from Cornerstone.
What this tells a buyer
Cornerstone has been operating since 1997, and its recent news includes a February 2026 sale of the company to a consortium of investors that included Castle Harlan.
The company offers turnkey detention equipment, security electronics integration, engineering services, and ongoing maintenance with 24/7 emergency support, and its listed product areas include electronics, steel, and glass.
Cornerstone serves federal, state, county, municipal, and private detention clients, and its own profile describes it as a detention equipment contractor with more than 300 employees.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
Overview
Cornerstone Inc. is a detention equipment contractor headquartered in Tanner, Alabama, founded in 1997. It manufactures, furnishes, and installs security hollow metal products, detention locking hardware, and precast cells, and it integrates security electronics. The company employs roughly 200 to 500 people, has estimated annual revenue of $100 million to $250 million, and is privately held. It serves federal agencies, state and county governments, municipalities, and private facilities. In August 2026, it announced the appointment of Scott Edgecombe as president.
At a glance
Attribute | Detail |
|---|---|
Founded | 1997 |
Headquarters | Tanner, Alabama |
Employees | 200-500 |
Revenue | $100-250M (estimated) |
Primary capability | Batteries & E-Mobility |
What Cornerstone makes
The company offers turnkey detention equipment, security electronics integration, engineering services, and ongoing maintenance with 24/7 emergency support, and its listed product areas include electronics, steel, and glass.
Products and capabilities described on the company's own site include Electronics, Steel, Glass (source: cornerstoneinc.com).
Trade and customs footprint
Cornerstone has been operating since 1997, and its recent news includes a February 2026 sale of the company to a consortium of investors that included Castle Harlan. US customs bill-of-lading records list 1364 inbound shipments across 50 foreign suppliers, with top origins including China · Taiwan · Belgium · India.
Latest developments
2026-08-12 — Cornerstone Appoints Scott Edgecombe as President (marketersmedia.com)
2026-08-04 — Project Spotlight: Franklin County Corrections Center | Columbus, OH | Cornerstone (linkedin.com)
2026-02-09 — BaseRock Capital Advises Cornerstone and Claborn Manufacturing on Their Sale to a Consortium of Investors, Including Castle Harlan - BaseRock Partners (baserockpartners.com)
2026-02-09 — Cornerstone - Products, Competitors, Financials, Employees, Headquarters Locations (cbinsights.com)
2026-01-20 — Cornerstone | LinkedIn (linkedin.com)
2025-10-28 — Airteq supplied and installed the detention hardware for another secure project. | Cornerstone (linkedin.com)
Facilities
Cornerstone is headquartered in Tanner, Alabama. Public sources also reference these locations:
Tanner, Alabama — baserockpartners.com
Company details
Cornerstone serves federal, state, county, municipal, and private detention clients, and its own profile describes it as a detention equipment contractor with more than 300 employees. Cornerstone was founded in 1997, has an estimated 200-500 employees, and is headquartered in Tanner, Alabama.
Frequently asked questions
What does Cornerstone make?
Cornerstone Inc. is a detention equipment contractor headquartered in Tanner, Alabama, founded in 1997. It manufactures, furnishes, and installs security hollow metal products, detention locking hardware, and precast cells, and it integrates security electronics. The company employs roughly 200 to 500 people, has estimated annual revenue of $100 million to $250 million, and is privately held. It serves federal agencies, state and county governments, municipalities, and private facilities. In August 2026, it announced the appointment of Scott Edgecombe as president.
Where is Cornerstone headquartered?
Cornerstone is headquartered in Tanner, Alabama (20871 Sandy Rd, Tanner, Alabama, 35671).
When was Cornerstone founded?
Cornerstone was founded in 1997.
How big is Cornerstone?
Cornerstone has an estimated 200-500 employees, with revenue in the $100-250M range (estimated).
Does Cornerstone import from overseas suppliers?
US customs bill-of-lading records show 1364 inbound shipments for Cornerstone, with top origins including China · Taiwan · Belgium · India.
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Last verified Nov 2026. Is this your company? Request a correction.
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