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Microbial Discovery Group

Fermentation company focused on Bacillus R&D

Overview

Microbial Discovery Group focuses on fermentation using Bacillus. The company conducts isolation, characterization, and fermentation development to create microbial-based solutions for customers. By applying rigorous scientific methods and trusted, scalable processes, MDG develops custom fermentation products and processes that can be produced at scale. Its differentiators include a strong emphasis on Research & Development, a science-driven approach, and a commitment to sustainability and customer success, aiming to grow together with clients. The overarching goal is to address global challenges by feeding people, cleaning water, and improving sanitation to save the world.

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About Microbial Discovery Group

Simplify's Rating
Why Microbial Discovery Group is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Franklin, WI

Founded

2007

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Simplify's take

What believers are saying

  • October 2026 WisTRAIN funding expands advanced fermentation, AI, and manufacturing training for 35 workers.
  • MDG opened or staffed three facilities totaling 217,000 square feet by October 2026.
  • Franklin officials approved 46 jobs and $30 million expansion, signaling continued customer demand.

What critics are saying

  • MDG depends on United Animal Health, so parent priorities can redirect capital and strategy.
  • WisTRAIN is only $168,000, exposing talent-building limits if growth outruns internal training.
  • Franklin expansion adds 117,000 square feet; underfilled capacity would crush returns by 2027.

What makes Microbial Discovery Group unique

  • MDG pairs Bacillus strain R&D with commercial-scale fermentation across three Wisconsin facilities.
  • United Animal Health acquired MDG in 2007, giving it a strategic animal-health parent.
  • MDG’s Franklin site now houses 22,000 liters of fermentation, lyophilization, and drying capacity.

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Company News

Milwaukee South News
Oct 22nd, 2026
Oak Creek's Microbial Discovery Group awarded $168,000 state grant for workforce training.

Oak Creek's Microbial Discovery Group awarded $168,000 state grant for workforce training. Oak Creek-based Microbial Discovery Group has received $168,000 through the state's WisTRAIN employer grant program. The money will fund training for 30 current employees and five new hires in fermentation, engineering, maintenance and process development. 2 days ago Thursday, Oct 22 By Milwaukee South News Staff Reports Microbial Discovery Group, a fermentation company headquartered in Oak Creek, announced on Oct. 20 that it has been awarded $168,000 through the Wisconsin Department of Workforce Development's Wisconsin Training for Resilient Advanced Industry Needs (WisTRAIN) employer grant program. The company, known as MDG, is one of 82 employers selected to receive funding through the federally supported initiative. The grant will support training for 30 current employees and five new hires across MDG's fermentation, engineering, maintenance and process development teams. Training will cover advanced fermentation operations, manufacturing analytics, AI-enabled manufacturing, manufacturing execution systems and project management. "This investment is more than funding. It gives our people the opportunity to deepen their expertise, build new skills, and grow with the company. Many of us, myself included, have built our careers at MDG, and we want current and future team members to see that same opportunity for themselves," said Sona Son, vice president of operations at MDG. Son began her career with MDG in 2008 as a microbiologist and moved into various leadership roles over the years before becoming vice president of operations, according to the company. Over the past five years, MDG has nearly doubled its workforce and expanded its manufacturing operations to three facilities totaling 217,000 square feet, supported in part by state workforce development initiatives. The company said that through the WisTRAIN grant, it will strengthen the technical expertise behind its growing manufacturing operations while creating opportunities for employees to advance their skills. The State of Wisconsin has published an announcement with more information about the program, according to the company. MDG, a subsidiary of United Animal Health, was founded in 2007 with a mission to "Feed, Clean, Save the World." The company describes itself as a research and development-driven product development, scale-up and large-scale Bacillus fermentation company. It focuses on the research and development of microbial solutions to address some of the world's largest problems, according to the company.

Intelligence360 News
May 8th, 2025
Microbial Discovery Group To Spend $30 Million To Expand In Franklin Wisconsin Creating 46 New Jobs.

Microbial Discovery Group to spend $30 Million to expand in Franklin Wisconsin creating 46 new jobs. Microbial Discovery Group to spend $30 Million to expand in Franklin Wisconsin creating 46 new jobs.Franklin, Wisconsin — According to state and local development sources, Microbial Discovery Group plans to invest $30,000,000.00 to build out 117,000 square feet of new space in Franklin. The company is creating 46 new jobs at this facility. The company plans to occupy the new space at 5200 Ashland Way in Franklin, on or about May 1, 2026. According to the company website Microbial Discovery Group (MDG) is a basic fermentation company with a special emphasis on Research Development (RD) with Bacillus; including isolation, characterization, and fermentation. MDG is passionate about applying real science to find innovative solutions to todays challenges

PR Newswire
Apr 1st, 2025
Microbial Discovery Group Continues Growth Into New Facility

The Bacillus Fermentation Company Expands Capacity for Microbial Growth and Scale-UpFRANKLIN, Wis., April 1, 2025 /PRNewswire/ -- Microbial Discovery Group (MDG), an RD-driven product development, scale-up, and large-scale Bacillus fermentation company, continues construction of its new production facility in southeastern Wisconsin. Since its establishment in 2007, MDG has demonstrated significant growth, positioning itself at the forefront of developing and commercializing microbial solutions for the animal health, agriculture, bioremediation, industrial and institutional, wastewater treatment, and human health markets. In addition to MDG's other two facilities in Oak Creek and Franklin, MDG will be opening a new 117,000-square-foot facility located at 3303 W. Oakwood Road in Franklin. The second Franklin location will create 46 new full-time jobs. MDG will be investing over $30 million into the facility over the next three years

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