Mark moved to Vermont in 1974 at the age of 20. In 1978 he opened a natural food store with Steve Birge called Black River Market.

In 1978 the store morphed into a wholesale distribution company, Black River Produce, which currently has about 150 employees. He is married to Margie Straub and they have raised four sons. He has served on numerous local and state boards including “Vermont Fresh Network.”