A Rocky Mountain bank deliberately shrinking after a decade of acquisitions, whose CEO is consolidating data into 'one clean source' to support AI and is piloting a Fiserv-built agentic AI tool for commercial loan onboarding.
First Interstate BancSystem, the Billings, Montana parent of First Interstate Bank with about $26 billion of assets across 14 states, is the rare regional bank that is both shrinking on purpose and piloting agentic AI. President and CEO Jim Reuter, the former FirstBank of Colorado chief who arrived in late 2024, has sold a dozen branches in Arizona and Kansas, exited indirect auto lending, outsourced the consumer credit card, sold 11 rural Nebraska branches, run off transactional loans and, in the first quarter of 2026, completed a redesign of the banking organisation into 'a flatter, more streamlined model', all in the name of relationship banking and 'disciplined organic growth' after activist HoldCo Asset Management attacked the bank's acquisition record. The technology thread runs alongside: Reuter told investors the bank has been working toward 'one clean data source' to support initiatives including AI, due to wrap up in early summer 2026, and that improvements to online account opening and Zelle have produced 'positive results'. In May 2026 Fiserv named First Interstate one of six banks it co-developed AI agents with on its new agentOS platform, built with OpenAI; the bank is piloting an agent for commercial loan onboarding that Reuter says has cut manual data entry and cycle times, delivered through the core so agentic tools 'simply integrate' into daily workflows. First-quarter 2026 net income was $60.2 million, or $0.61 per share, with a 14.30% CET1 ratio and about $84 million of buybacks. The bank also warns customers that AI search summaries often misstate interest rates. In August 2026 it announced a chief operations officer hire with a technology and digital background, effective September. First Interstate Bank is a Montana state member bank supervised by the Federal Reserve; no AI budget has been disclosed and the agent remains a pilot.
Lead bank
First Interstate Bank
Assets (lead bank, Mar 31, 2026)
$26 billion
Charter
Montana state member bank (Federal Reserve)
Headquarters
Billings, MT
Flagship platform
Fiserv agentOS pilot and the 'one clean data source' project
AI leadership
Jim Reuter · Chris Shepler
- Piloting a Fiserv agentOS AI agent for commercial loan onboarding, co-created with Fiserv and OpenAI; CEO reports reduced manual data entry and cycle times.
- 'One clean data source' project to support AI and other technology initiatives, targeted for completion in early summer 2026.
- Deliberate shrinkage: branch sales in Arizona, Kansas and Nebraska, exit from indirect auto and credit cards, loan run-off, flatter organisation completed Q1 2026.
- Activist HoldCo Asset Management pressed the board to swear off acquisitions; management says the focus is disciplined organic growth.
- Q1 2026 net income $60.2 million ($0.61 per share); CET1 14.30%; about $84 million of buybacks.
- Customer education on AI search summaries misstating interest rates (November 2025).
What is Fiserv agentOS pilot and the 'one clean data source' project?
First Interstate co-created an AI agent for commercial loan onboarding with its core provider Fiserv on the agentOS platform, which Fiserv built with OpenAI on AWS Bedrock and launched in May 2026 with 'bank-grade controls' for policy, governance, auditability and recordkeeping. The agent addresses a process that 'straddles multiple systems' and is 'super manual', and CEO Jim Reuter says it has already reduced manual data entry and cycle times: 'Delivery of an agentic operating system through our core allows us to simply integrate agentic tools into our daily workflows.' Underneath it, the bank has been consolidating its data into 'one clean data source' to support technology initiatives including AI, a project expected to finish in early summer 2026, alongside improvements to online account opening and Zelle.[5][4]
What has First Interstate done on AI, and when?
- May 14, 2026
Fiserv agentOS: commercial loan onboarding agent in pilot[5]
One of six banks co-developing agents with Fiserv and OpenAI.
- Apr 29, 2026
Q1 2026 call: flatter organisation, data consolidation for AI[4]
'One clean data source' due early summer; online account opening and Zelle improved.
- Apr 10, 2026
Sale of 11 rural Nebraska branches completed[4]
About $244 million of deposits transferred.
- Feb 5, 2026
Why First Interstate is shrinking[3]
Branch sales, loan run-off and refocused investment under Reuter.
- Nov 13, 2025
Warning on AI search summaries and interest rates[2]
Customers told to check sources and bank rate pages.
- Oct 30, 2025
Response to activist pressure[1]
Relationship banking focus; exit from indirect auto; leaving markets that do not fit.
Where does First Interstate use AI today?
| System | What it does | Status | Use case |
|---|---|---|---|
| Agentic AI for commercial loan onboarding (Fiserv agentOS)[5] | Cuts manual data entry and cycle times across multiple systems. | Pilot | Generative & agentic AI |
| 'One clean data source' consolidation[4] | Data foundation for AI and other technology initiatives. | Rolling out | AI governance (general) |
| Core-delivered AI with bank-grade controls[5] | Fiserv platform controls for policy, governance, auditability and recordkeeping. | Pilot | Third-party & vendor AI |
| Customer guidance on AI search answers[2] | Explains inaccurate AI-generated rate summaries. | In production | Customer-facing chatbots |
Use-case links open the tracker's rules-by-use-case matrix: which documents govern each system type.
What has First Interstate disclosed in numbers?
“Delivery of an agentic operating system through our core allows us to simply integrate agentic tools into our daily workflows.”[5]
Jim Reuter · President and CEO · May 14, 2026
“Completed the redesign of our banking organization.”[4]
Jim Reuter · President and CEO · Apr 29, 2026
Who runs AI at First Interstate?
Jim ReuterLinkedIn ↗
Chris SheplerLinkedIn ↗
Chief Banking Officer[3]
Which regulators govern First Interstate's AI?
| Authority | Why it matters here | Documents |
|---|---|---|
| Federal Reserve | First Interstate Bank is a state member bank; SR 11-7 and SR 23-4 govern the agentic pilot and the Fiserv dependency. | SR 11-7 SR 23-4 |
| CFPB | Commercial onboarding automation is outside consumer scope, but any extension to consumer credit brings adverse-action duties. | ECOA / Regulation B adverse action (15 U.S.C. 1691(d); 12 CFR 1002.9) |
| FDIC | Deposit-insurance supervision and interagency third-party guidance apply to core-delivered AI. | FDIC FIL-29-2023 |
What does the public record suggest about First Interstate's AI strategy?
Analysis by BankingNewsAI from the sources cited on this page. Observations, not advice.
01
Core-delivered agents are the community-bank path
First Interstate shows how a mid-size bank gets agentic AI without a lab: through its core provider, with the vendor's controls as the governance baseline.
02
Data first, then agents
Consolidating to one clean data source before scaling the pilot is the right order and the part examiners will ask about.
03
Shrinking creates budget
Branch sales and business exits free expense for technology; the bank should say how much is redirected.
04
Concentration risk sits with Fiserv
Core, agent platform and model provider in one chain is convenient and a single point of failure; SR 23-4 due diligence should cover OpenAI and AWS beneath Fiserv.
Does First Interstate Bank use AI?
Yes, in pilot. First Interstate co-created an AI agent for commercial loan onboarding with Fiserv on its agentOS platform, built with OpenAI, and is piloting it; CEO Jim Reuter says it has reduced manual data entry and cycle times. The bank is also consolidating its data into one clean source to support AI.
Why is First Interstate getting smaller?
Under CEO Jim Reuter the bank is refocusing on relationship banking and disciplined organic growth after years of acquisitions: it sold branches in Arizona, Kansas and Nebraska, exited indirect auto lending, outsourced its credit card and let transactional loans run off, while activist HoldCo Asset Management pressed it to stop acquiring.
When First Interstate moves on AI, you'll read it here first.
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