John Duimstra

Chief Financial Officer Zero Zone, Inc.

Last Reviewed: September 27, 2026

Executive Summary

John Duimstra is Chief Financial Officer of Zero Zone, Inc., the privately held Wisconsin manufacturer of refrigerated display cases and commercial and industrial refrigeration systems. He has spent his whole recorded career at the company. By Zero Zone’s own account he joined as controller about 36 years before December 2024 and was later promoted to CFO. That makes him one of the longest-serving members of management at a business founded in 1961. The company also names him as the contact for questions about its supplier standards.

Career Highlights

• Chief Financial Officer of Zero Zone, Inc., based at the company’s North Prairie, Wisconsin head office.
• Joined Zero Zone as controller and rose to CFO; in December 2024 the company said he had started there 36 years earlier.
• Named by Zero Zone as the contact for questions about its Supplier Standards, which cover supplier conduct including slavery and human trafficking.
• Features in the company’s own recruitment material as an example of internal career progression.

Professional Journey

Duimstra joined Zero Zone as controller. In December 2024 the company published an article about its culture of responsiveness. Under the heading “Building the Team” it says he began at Zero Zone 36 years earlier, which puts his start around 1988, and has since advanced to Chief Financial Officer. The article links his career to the company’s support for employee training and career paths, and points readers to a video testimonial in which he describes his experience. No announcement giving the date of his promotion to CFO was found.

His time at the company spans most of its modern growth. Zero Zone was incorporated in June 1961 by three refrigeration specialists who started in a rented dairy barn in Pewaukee, Wisconsin. It moved to Genesee Depot in 1976 and to its present North Prairie headquarters in 1995. It bought Systematic Refrigeration of Ramsey, Minnesota in 2002, which grew into its refrigeration systems business. More recently it opened a 100,000 sq ft plant in Dyersville, Iowa in 2021 and a 185,000 sq ft warehouse and distribution centre in Mukwonago, Wisconsin in 2023. Today it makes glass-door display cases and multi-decks for supermarkets, drug, dollar and convenience stores, as well as industrial refrigeration systems for cold storage, food processing, ice arenas and pharmaceutical users.

As CFO, Duimstra also carries part of the company’s supplier governance. Zero Zone’s Supplier Policy Statement lists him, at the North Prairie office, as the person to contact with questions about its Supplier Standards.

Education

No first-party or dated published source stating his education was found.