FIBK Regional Banks · Community bank · Capital returns · Loan runoff · Thesis updated August 11, 2026

Buybacks fight an accelerating loan book runoff

First Interstate makes most of its money from lending, deposits, and securities income.
The core problem is shrinking assets, as loans fell another $447 million in Q2 2026.
Management is using aggressive share buybacks, with a total authorization up to $450 million.
The bank has sold or closed non-core branches, including locations in Nebraska, Arizona, and Kansas.
The next big test is whether loan balances stop falling and start growing again before 2027.

01 Running thesis

Shrinking bank, active buyback

First Interstate is in a real tug of war. The bull case is that the cleanup is mostly done. The bank has left weaker or non-core areas, cut back products that did not fit, and is using cash to buy back stock. In Q2 2026, the board expanded the share repurchase authorization by $150 million, bringing the total program to $450 million.

That buyback matters because it can lift earnings per share even when total profit is not growing much. The bank is getting smaller but potentially more profitable per share, supported by a net interest margin that has expanded for nine consecutive quarters.

The bear case is just as simple. The loan book keeps shrinking. In Q2 2026, loans declined by $447 million due to accelerated payoffs, and management expects this payoff activity to continue through the rest of 2026. A bank can only lean on buybacks for so long if its core lending engine continues to contract.

So the stock story is not about whether management can buy shares. It already is. The key question is whether the bank can prove that organic loan growth, meaning growth from new customer business instead of deals, can finally take hold after the deliberate runoff is complete.

Aug 2026→The Q2 2026 10-Q confirmed the expanded $450 million share repurchase program and noted no material changes to risk factors.

Jul 2026→Q2 2026 saw accelerated loan payoffs driving a $447 million decline in loan balances. But credit quality improved, and the share repurchase program was expanded to $450 million.

May 2026→Q1 made the central debate sharper. Loans fell another $473.2 million, while the company repurchased $84.0 million of stock in the quarter and $10.4 million more in April.

Feb 2026▼The 2025 10-K showed a $2,643.3 million loan decline for the year. The larger $300.0 million buyback authorization helps, but it does not solve the organic growth problem.

Jan 2026→Q4 credit metrics improved, with criticized loans down 9.6% and non-performing assets down 26%. Management still guided for loans to decline in the first half of 2026 before modest growth later.

Nov 2025▲The bank completed the Arizona and Kansas branch sale, announced a Nebraska branch deal, and started a $150.0 million repurchase program. The strategy became more focused, but growth still had to be proven.

Oct 2025→Q3 credit quality stabilized and the largest criticized loan was paid off after quarter-end. Loan production was still weaker than expected, which pushed the expected loan trough later.

Aug 2025▼The Q2 10-Q showed non-accrual loans up 39.3% from year-end 2024. That brought credit risk back into focus while the loan portfolio continued to shrink.

02 Business model

Spreads pay the bills

First Interstate is a traditional community bank. It takes deposits from customers, lends money to households and businesses, and earns the spread between interest collected and interest paid. It also earns fee income from payments, wealth management, mortgage banking, deposit service charges, and other services.

The business still depends mainly on earning a healthy spread on loans and securities. Net interest income makes up the vast majority of its revenue.

The strategy has shifted. Instead of growing mostly by buying other banks, First Interstate is trying to focus on stronger core markets, simplify its branch map, and make decisions closer to customers. It has exited Arizona, Kansas, North Dakota, and Minnesota, and reduced its Nebraska footprint.

Where it breaks is loan growth. If the bank cannot replace runoff and branch-sale loans with new relationship loans, net interest income can stay under pressure even if margins improve.

03 Product portfolio

Plain bank products, fewer side bets

Cash cow

Commercial lending

Commercial and commercial real estate loans are central to the loan book. These loans drive interest income, but they also carry credit risk when local economies weaken.

Steady

Consumer and residential banking

The bank offers deposit accounts, residential loans, and consumer banking services. The consumer loan book is shrinking as indirect lending runs off.

Cash cow

Deposits

Deposits are the main funding source for loans and securities. They provide the core capital needed to generate spread income.

Steady

Treasury, payment, and deposit fees

Payment services, deposit service charges, and other fees help diversify revenue away from interest rates.

Option

Wealth management

Wealth management adds fee income from trust, employee benefit, investment, and insurance services.

Option

Mortgage banking

Mortgage banking adds fees from loan originations, sales, and servicing. It is smaller than the spread business and can be rate sensitive.

04 Business segments

Mostly spread income

Net interest income83%declining

Noninterest income17%declining

Mix is based on operating revenue for the three months ended September 30, 2025, generating $206.8 million in net interest income and $43.7 million in noninterest income.

05 Risk factors

What could go wrong

Loan balances keep falling

High impact · High odds

This is the main risk. Loan balances dropped $447 million in Q2 2026 due to accelerated payoffs. Management expects these payoffs to continue through 2026, delaying the return to organic growth.

We watchQuarterly loan balances and management commentary on payoff trends.

Buybacks become the only growth tool

High impact · Medium odds

The company is relying heavily on returning capital, increasing its total repurchase authorization to $450 million in Q2 2026. If buybacks slow down before the loan book stops shrinking, earnings per share support could vanish.

We watchRemaining repurchase authorization and the pace of quarterly share buybacks.

Margin cannot offset a smaller balance sheet

Medium impact · Medium odds

Net interest margin has improved for nine consecutive quarters. But if total loans keep dropping, a better margin on a smaller base will not be enough to grow net interest income.

We watchNet interest margin versus total average earning assets.

Credit risk cycles back

Medium impact · Low odds

Credit quality improved materially in Q2 2026, with criticized loans falling 9.3%. However, real estate and commercial loans remain sensitive to economic cycles, meaning credit risk could return if conditions weaken.

We watchNon-performing assets, non-accrual loans, and criticized loan balances.

06 Quick answers

In one breath

What does First Interstate BancSystem do?

First Interstate is a community bank. It takes deposits, makes loans, invests in securities, and earns fees from services like payments, wealth management, and mortgage banking.

Why is FIBK buying back so much stock?

Management is using buybacks to return excess capital and support earnings per share. This is important because the loan book is shrinking, so buybacks are doing a lot of the near-term work for shareholders.

What is the biggest issue for FIBK stock?

The biggest issue is whether loans stop falling. If loan balances do not bottom out soon, the market may view the bank as a shrinking entity rather than a resetting one.

Is credit quality the main risk now?

Credit risk has faded somewhat after a 9.3% drop in criticized loans during Q2 2026. The main risk right now is the lack of loan growth, though credit should still be monitored.