President and owner, steel fabrication manufacturer · Northstar Steel Fabricating, Inc. · Rhinelander, Wisconsin
Mark Denis
Mark Denis, FMCSA/USDOT-listed officer and widely cited president/owner of Northstar Steel Fabricating, Inc., Rhinelander. Co-founded with Peter Denis (sales manager in directories) in 1981; family members including Robert and David Denis appear in company/LinkedIn contexts. Prefer Mark over Peter (sales).
Net worth
$5 million+
September 17, 2026
About
Mark Denis leads Northstar Steel Fabricating, the Rhinelander manufacturer that builds operator cabs, control rooms, machinery enclosures, and related fabricated assemblies for OEM customers in forestry, agriculture, mining, construction, and other heavy industries.
Company history pages state the business began as a partnership in 1981, incorporated in Wisconsin two years later, and now occupies roughly 200,000 square feet on about 23 acres in Rhinelander.
Federal motor-carrier identity filings list Mark Denis as the company’s officer at the Rhinelander campus also used in chamber and company contact materials. Industry directories and company LinkedIn descriptions consistently frame the firm as family-owned and identify Mark among the founding Denis leadership alongside Peter.
Northstar is one of Rhinelander’s quieter large fabricators—less consumer-facing than AirPro—but the combination of a primary-source plant footprint and Mark Denis’s officer attribution makes him the slate’s second manufacturing principal. Personal bio depth beyond that officer and directory trail is thin.
Companies and affiliations
- Northstar Steel Fabricating, Inc.
Notable facts
FMCSA/USDOT carrier dossier (Vektor summary of federal record): Northstar Steel Fabricating Inc., Rhinelander; officer Mark Denis; Rhinelander, WI 54501.
ProcessRegister supplier profile: Northstar Steel Fabricating, Inc., Rhinelander, WI 54501; lists Peter W. Denis as sales manager contact.
What questions can this profile answer
- What makes Mark Denis notable?
- Mark Denis leads Northstar Steel Fabricating, the Rhinelander manufacturer that builds operator cabs, control rooms, machinery enclosures, and related fabricated assemblies for OEM customers in forestry, agriculture, mining, construction, and other heavy industries. Company history pages state the business began as a…
- What is Mark Denis's estimated net worth?
- Mark Denis's estimated net worth is $5 million+ as of 2026-09-17.