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INTREN
INTREN is a minority-owned electrical infrastructure contractor founded in 1988 by Loretta Rosenmayer and acquired by MasTec in 2021.
INTREN
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General information
Firm type
Asset Manager
Year founded
1988
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Union
Corporate office
Union, IL, United States
Additional offices
Franklin Park, IL · Rock Island, IL · Troy, IL · Vincennes, IN · Des Moines, IA · Baltimore, MD · St. Louis, MO · West Chester, OH · New London, WI · Waukesha, WI
Principals
Loretta Rosenmayer
Founder
Sector focus
Frequently asked questions
Who founded INTREN, and what is the wealth origin?
INTREN was founded in 1988 by Loretta Rosenmayer as Trench-It, a small electrical contracting company. The origin is entrepreneurial — Rosenmayer built the business from a single operation into a regional infrastructure contractor. Wealth is generated through operating profits, not investment returns. (per firm website)
Is INTREN a family office or an operating company?
INTREN is an electrical infrastructure operating company, not a family office or investment vehicle. Since May 2021, it has been a subsidiary of MasTec, a publicly traded industrial firm (NYSE: MTZ). The founding Rosenmayer family may retain minority ownership, but INTREN functions as a project-delivery business, not an allocator of capital. (per firm website, MasTec 2021 announcement)
What infrastructure does INTREN build and maintain?
INTREN focuses on electric distribution and transmission systems — overhead and underground power lines, substations, and related equipment. It also provides emergency storm restoration and testing services through its Electrical Testing Company subsidiary in Vincennes, Indiana. Clients include investor-owned utilities, municipal utilities, and contractors. (per firm website)
What is INTREN’s minority-owned business certification?
INTREN holds certification as a minority-business enterprise (MBE). The firm states this status helps it access contracts with utilities and municipalities that have supplier-diversity programs. The MBE designation is corporate, not personal — it applies to INTREN as a legal entity. (per firm website)
What geographies does INTREN serve?
INTREN operates across the Midwest and Mid-Atlantic United States. Its offices are in Illinois (Union, Franklin Park, Rock Island, Troy), Indiana (Vincennes), Iowa (Des Moines), Maryland (Capitol Heights), Missouri (St. Louis), Ohio (West Chester), and Wisconsin (New London, Waukesha). Recent expansion includes energized transmission work in Florida. (per firm website)
How is INTREN structured after the MasTec acquisition?
INTREN operates as a subsidiary of MasTec, a Fortune 500 industrial company. MasTec acquired INTREN on May 5, 2021. The firm retains its brand, offices, and management but reports into MasTec's electrical transmission and distribution segment. It is not a separate investment vehicle or fund. (per MasTec, May 2021)
Does INTREN invest in external companies or funds?
There is no public evidence that INTREN makes third-party investments. The firm's sole activity is electrical infrastructure project delivery. It does not appear to deploy capital in venture, private equity, or real estate outside its own operations.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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