Blarney Castle Oil Co. Acquires Pri Mart Stores

The 13 Pri Mart-branded convenience stores are located in Michigan.

August 01, 2025

Pri Mar Petroleum Inc. has sold its petroleum marketing and convenience retail business to Blarney Castle Oil Co. and its delivered fuels and lubricants business to Merle Boes Inc., according to Matrix Capital Markets Group, who advised the sale.

Headquartered in St. Joseph, Michigan, Pri Mar operates 13 Pri Mart branded convenience stores and supplies 12 wholesale dealers throughout southwestern Michigan, selling fuels under the BP, Amoco and Citgo brands. The company also delivers commercial fuels, heating oil and lubricants to over 2,000 customers from its three bulk plant facilities. Pri Mar has grown to service all of southwestern Michigan through its retail stores and fuels distribution network and employs approximately 120 team members.

Pri Mar is a third-generation, family-owned and operated business founded by Harry Priebe and his brother in 1928 as a distributor of petroleum products to farm, industrial and home heating customers. Pri Mar’s first convenience store opened in Stevensville, Michigan.

In other recent acquisition news, earlier this month Mirabito Convenience Stores acquired four Stewart’s Shops locations in New York and Vermont.

“With this acquisition, we are excited to extend …[our] commitment to excellence to our new convenience store locations—supporting our home fuel customers on the road and bringing added value to the communities we know and care about,” Mirabito said.