Southeastern Wisconsin has a robust manufacturing industry, one recognized and relied on by companies around the globe. But we know this credibility wasn’t achieved overnight. It took the hard work and continuous innovation of companies like MMAC member Sentry Equipment.
Established in 1925 as the Henszey Company, the Oconomowoc-based manufacturer got its start with the creation of power plant components and milk evaporators. The company rebranded in 1959, becoming Sentry Equipment, and focused
its efforts on sampling and analysis techniques that have become applicable in a diverse set of industries, including power, oil, chemical, food and wastewater.
Over the course of a century, Sentry has made a name for itself through innovative breakthroughs, acquisitions and a people-first business culture. The manufacturer developed the world’s first sampling system in 1965 and a revolutionary nuclear Post-Accident Sampling System (PASS) in 1980. When Sentry leader Dick Henszey retired in 1986, he transferred ownership to his employees.
Today, employee ownership is a key component of the company’s culture. A vested interest in operations has led to increased profitability and accountability. Also, employee owners help shape company innovation and remain informed on financial decisions.
“We are proud of being part of an amazing business that has been making the world better for so many years! For a century, our employee owners, products and services have improved lives and protected the processes that power the world and drive our economy. We’ve evolved and grown, but despite all these changes, Sentry has always been a great place to work, with an exceptional culture,” said Sentry CEO Brian Baker.
On Oct. 16, employees from all three Sentry locations – Oconomowoc, Salt Lake City and Houston – gathered alongside stakeholders and community members at the Oconomowoc headquarters for a fully vested awards ceremony. Attendees heard from Sentry leadership as they recognized the 2025 National Employee Owner of the Year and revealed the company’s stock price.
Following the ceremony, Sentry employee-owners led guests on factory tours, and the company welcomed school groups for shop tours as a part of its annual Manufacturing Day celebration.
The day concluded with a second ceremony. State and local representatives gave formal remarks, followed by a champagne toast and a party with the local band Nobody’s Hero.
“To me, Sentry’s 100th anniversary signifies the collective efforts of all our dedicated employees, past and present, who have contributed to our success. It is a time to reflect on our rich history, celebrate how we’ve joined a rare group of companies that’ve made it this long and look forward to a future filled with opportunities and growth. This milestone reinforces our mission to continue delivering exceptional solutions and services to our customers, while fostering a culture of excellence and collaboration within our teams,” said Sentry Vice President of Engineering David Nowak.
Sentry is moving into its next 100 years with a well-defined plan for continued success. The company would like to continue to grow its top line, with a sales target of $110 million by its 110th anniversary. The manufacturer hopes to capitalize on its strong position in the resurgent power industry while growing its wastewater business and continuing to expand in the lifecycle service sector. Sentry also plans to continue its delivery of applications, industry expertise, lifecycle services and fast response in quoting, design and delivery.
