First Interstate in Montana to sell Nebraska branches to Security First

First Interstate BancSystem in Billings, Mont., continues to shrink its footprint.

The $27.6 billion-asset company said in a press release that it will sell 11 Nebraska locations to Stockmens Financial in Rapid City, S.D. The deal includes $280 million in deposits and $70 million of loans. The deal is expected to close in early 2026.

“We’re thrilled to welcome these First Interstate branches into our family and deepen Security First’s roots across Nebraska,” Gregory Hunter, president of Stockmens Financial and CEO of the $2 billion-asset Security First Bank, said in the release. “We share First Interstate’s unwavering commitment to community, personal service, and local investment.”

“This agreement … provides an opportunity for us to redeploy capital with the goal of accelerating growth in our strongest markets,” James Reuter, First Interstate’s president and CEO, added.

First Interstate agreed earlier this year to sell 10 branches in Arizona and two in Kansas to Enterprise Financial Services in St. Louis. That deal included $740 million in deposits and $200 million in loans.