The Granite Companies


The Granite Companies comprise a strong and diversified portfolio that we plan to grow long-term. Across the next decade and beyond, we will add platform companies as retiring entrepreneurs – current owners of great Minnesota companies – choose Granite as the long-term, majority owner and steward of their legacy.

We invest in great management teams and people in Minnesota companies that are established, growing, and profitable niche leaders in national or global markets. In addition to adding new platform companies in Minnesota, we will also continue to actively invest in strategic add-on acquisitions around the world that grow our existing platform companies, bringing complementary talent, technologies, products, services, customers, markets, and global reach.

We take the long view


Our objective is to sustain Granite for 100 years and more.

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All Flex Solutions | Northfield, MN

Kevin Jackson, CEO

All Flex Solutions is a leading provider of specialty flex and rigid flex circuits, flexible heaters, and value-added assemblies for mission and life critical applications. All Flex products can be found in many applications and markets, including medical, defense, aerospace, semiconductor, industrial, and telecommunications. allflexsolutions.com

Altimate Medical | Morton, MN

Ryan Williams,CEO

Altimate Medical Holdings and its subsidiaries design, manufacture, and distribute a full line of therapeutic standing devices, diagnostic imaging platforms, and shower assist devices. The company’s subsidiary units include Altimate Medical, Inc. and Medical Positioning, Inc. The company’s products are marketed under the “EasyStand,” “Zing,” “Medical Positioning,” and “ActiveAid” brands. Altimate Medical Holdings has grown consistently for more than 30 years, with sales in more than 60 countries. altimatemedical.com

DeZURIK | Sartell, MN

Bryan Burns, CEO

DeZURIK is the innovative global leader in valve technologies for water and wastewater treatment, as well as industrial applications, including pulp and paper, energy, mining, and other process industries. Recognized worldwide for superior design and performance, DeZURIK products increase durability, reliability, and customer profitability and provide an environmentally sustainable solution. dezurik.com

GeoComm | St. Cloud, MN

Jeff Liebl, CEO

Founded in 1995 to provide turnkey emergency 9-1-1 development services, GeoComm has a national reputation as a leading provider of public safety GIS systems. Enhancing the situational awareness of emergency responders with locally authoritative outdoor and indoor mapping systems, GeoComm serves local, regional, and statewide municipalities, military agencies, and school districts in forty-nine states, helping keep more than 100 million people safe. geocomm.com

GEOTEK | Stewartville, MN

Ben Wiltsie, CEO

For over 30 years, GEOTEK has been internationally recognized for industry leading engineered composite products. After growing PUPI® into the leading global supplier of fiberglass crossarms, the company added Alliance™ fiberglass light poles and is committed to developing other market-leading composite brands for the world’s infrastructure. geotek.com

Massman Companies | Villard, MN

Jeff Hohn, CEO

A leader in the design and manufacturing of precision automation machinery, Massman Companies has been providing innovative packaging systems for over 40 years. From liquid filling to case packing to palletizing, Massman has solutions for a wide range of automation needs. Massman Companies include Massman Automation, EDL, Ideal Pase, DTM Packaging, and New England Machinery. massman.com

Microbiologics | St. Cloud, MN

Kristen Knox, CEO

Microbiologics is the leading expert in biological products and services, focused on protecting the health and safety of people around the world. For over 50 years, the company has been partnering with healthcare and life science laboratories, manufacturers, and suppliers across the globe to co-create and provide biological control materials, assay services, and consulting for microbiology, molecular diagnostics, and virology. microbiologics.com

Rotochopper | St. Martin, MN

Tosh Brinkerhoff, CEO

A North American leader in the design and manufacture of horizontal grinding equipment for the forestry, agriculture, recycling, and construction markets, Rotochopper has been innovating since the early 1990s. Rotochopper equipment transforms waste – such as trees, pallets, garbage, or food – into landscape mulch, livestock feed, biomass fuels, and more. rotochopper.com

Strongwell | Bristol, VA; Abingdon, VA; Chatfield, MN; & Apodaca, MX

John D. Tickle, Chairman
G. David Oakley, Jr., President & CEO

Strongwell is the recognized leader in pultrusion technology and pultruded fiber reinforced polymer (FRP) composites. With facilities in the U.S. and Mexico, the company manufactures a wide variety of products for its diverse customer base, including structural shapes, grating, handrail, structural building panels, decking systems, composite armor, ladder rail, and many OEM products. strongwell.com

Vector | Fergus Falls, MN

Jeff Ackerson, CEO

Vector manufactures and distributes a market-leading line of vinyl windows and patio doors, serving dealers and builders throughout the Upper Midwest. Since 1995, Vector has been committed to providing customers with unparalleled service and exceptional craftsmanship. vectorwindows.com