About Us

Rocky Mountain Supply was formed as the result of the merger of Gallatin Farmers Company based in Belgrade, MT and Coop Supply based in Dillon, MT. The two companies merged in 1999 to form a new company called Rocky Mountain Supply, Inc. Gallatin Farmers Company and Coop Supply of Dillon both were formed in the 1930’s by area farmers to buy gasoline and diesel fuel at a lower cost for its members. Since then and through the merger of the two cooperatives, Rocky Mountain Supply has become a diversified, locally-owned cooperative governed by a board of directors consisting of seven members who are agricultural producers representing the communities we serve.

We offer a full line of energy products such as gasoline, diesel fuel, and lubricants as well as a full line of crop nutrient and crop protection products, seed, field application of crop nutrients, hardware, livestock equipment, animal health products, feed supplements, pet supplies, western wear clothing and boots, sporting goods, convenience store items and other products and services too numerous to mention. In 2001, Rocky Mountain Supply formed a joint venture with rural electric cooperative Vigilante Electric Cooperative based in Dillon, MT for the purposes of serving members and customers with propane and related services. This joint venture is called Montana Energy Alliance.

Incorporated November 1, 1999, Rocky Mountain Supply has profitably served its members and customers of southwest Montana, sharing the success of the cooperative through its patronage dividends returned to members each year along with the reinvestment of improved facilities and equipment to better serve members and customers in the future. We will look to continue to expand our presence throughout southwest Montana both geographically as well as offering more products and services to its members and customers.

Because we are organized as a cooperative, Rocky Mountain Supply will distribute back to its members each year patronage dividends based on the profitability of Rocky Mountain Supply and the amount of business each respective member transacts with Rocky Mountain Supply.

Mission Statement

“RMSI is an agricultural-based cooperative serving our customers with quality products and exceptional service.”

Vision Statement

“To be the premier provider of energy, agronomy, farm, and home products and services where every customer and employee is our priority”


“Honesty, integrity, shared success, knowledgeable, committed”

Board of Directors

  • Daryl "Harry" Marx - Bozeman, MT
  • Lindsay Seidensticker - Twin Bridges, MT
  • Jerry Meine - Dillon, MT
  • Chuck Kohlbeck - Bozeman, MT
  • Ned Zimmerman - Wilsall, MT
  • Brandon Malesich - Dillon, MT
  • Warren Flynn - Townsend, MT

Rocky Mountain Supply is happy to announce the return of our scholarship program for qualifying students. RMSI will be making available 4 - $1,000 scholarships to students whose parent(s)/guardian or applicants are active members of Rocky Mountain Supply, Inc. Three of the scholarships will be awarded to students attending a four-your college or university. One scholarship will be awarded to a student attending a technical/community college or a two-year program at a college or university.

Over the past several years, Rocky Mountain Supply has been proud to support our next generation, and we are very excited to carry on this tradition into the future. Read the scholarship details and program specifics (PDF, 155.72 KB)