First Citizens Bank of Butte (“First Citizens Bank”), and Frontier Credit Union (“Frontier”) announced that Frontier has acquired First Citizens Bank.
Olsen Palmer LLC served as financial advisor to Butte Bank Shares, Inc., parent of First Citizens Bank.
The legacy First Citizens Bank branch will become the 16th location in Frontier's growing regional footprint. The transaction marks the Idaho-based credit union's initial expansion into Montana.
Olsen Palmer was the #1 sell-side bank M&A advisor nationwide in 2025 and one of the top 3 overall (sell-side + buy-side) based on transaction count, according to S&P Global.