Can management elaborate on the competitive landscape in Texas, its impact on loan spreads and deposit rates, and the overall outlook for loan growth?

Acknowledged increased competition from out-of-state banks leading to lower loan rates and higher deposit rates. Stated Prosperity maintains pricing discipline, preferring to buy securities over taking on low-margin, high-risk loans. Expects flat loan growth for the year due to acquisition-related runoff. “I think that if we can stay flat, that's pretty good this year. I mean, because I think that as you do these deals, you just see some you see some change in that. And just historically, I'd like to say that you're going to be there, we're going to make it. But historically, that's not happening.”

Given the current integration efforts, is there room to pursue additional M&A opportunities, or is the focus solely on integrating the current deals?

The primary focus is on integrating the three current deals (American, Southwest, Stellar) to ensure successful operational integration and hit consensus numbers. Did not rule out future M&A but emphasized current integration as the priority, noting the significant increase in bank size. “I think the answer that we all need to be doing is these 3 deals are very important. I mean we're going from a $38 billion bank to a $53 billion, $54 billion bank. And so that's -- so our main focus right now is the operational integration of these three deals.”

How are deposit costs expected to trend in a no-rate-cut scenario, and what are the current yields on new loans?

Expects deposit costs to remain stable or slightly decrease due to repricing of higher CDs, holding current rates. New loan yields are still 'a little bit higher' than current market competitive rates, as the bank is not chasing low-margin deals. “I think our numbers show really higher net interest margins and maybe you do deals. But at the same time, I don't know that I really believe them because as interest rates come down, we never went up as high on a lot of our customers as we -- as they could have gone somewhere else so I don't know that we'll come down as fast or at the same time.”

Prosperity Bancshares (PB) Q1 FY26 earnings call: guidance and Q&A

Earnings call· Mar 2026 (Q1 FY26)· Financials· Apr 29, 2026

Source: earnings call transcript

Executive summary

Prosperity Bancshares Q1 FY26 — Strong NIM Expansion and Strategic M&A Integration

Prosperity Bancshares delivered strong Q1 FY26 results, marked by significant net interest margin expansion driven by asset repricing and recent mergers. The company successfully completed two acquisitions and secured approvals for a third, Stellar Bancorp, which is expected to close in July. While facing record net charge-offs from two specific credits and a slight organic loan decline due to competitive pressures, management remains optimistic about future profitability and capital generation, focusing on integrating the new entities and leveraging scale.

Highlights

Adjusted net income per diluted common share increased 9.5% to $1.50 for Q1 FY26 compared to $1.37 in Q1 FY25.
Net interest margin (tax equivalent) expanded to 3.51% in Q1 FY26, up 37 bps YoY and 21 bps QoQ.
Total deposits increased $4.6 billion (16.4%) YoY to $32.6 billion at March 31, 2026, primarily due to mergers, with core deposits (excluding acquired) up 1.2%.
Completed two mergers (American Bank, Southwest Bancshares) and received regulatory approvals for a third (Stellar Bancorp), expected to close July 1, 2026.
Repurchased approximately 837,000 shares of common stock for $57 million at an average price of $68.15 during Q1 FY26.

Concerns

Net charge-offs were $41 million in Q1 FY26, the largest amount in the bank's history, primarily due to two unique credits ($30M from an insurance company, another from a long-time client).
Total loans (excluding mergers and warehouse lending) decreased 1.2% QoQ, or about 4.8% annually, due to increased market competition and strategic choices not to participate in lower-rate, lower-recourse deals.
Noninterest expense increased to $217.3 million in Q1 FY26, up from $138.7 million QoQ, primarily due to $42.5 million in merger-related expenses.

Guidance & targets

Category	Target	Timeline	Confidence
Fair value loan income	$3 million to $4 million low materiality	Q2 · FY26	High
Noninterest expense	$176 million to $180 million medium materiality	Q2 · FY26	High
Combined Net Interest Margin (NIM)	around 3.70% high materiality	FY26 exit	Medium
Combined Net Interest Margin (NIM)	around 3.60% high materiality	FY26 average	Medium
Fair value income from Stellar	$10 million to $12 million medium materiality	FY27	Low
Efficiency ratio	mid 40s medium materiality	Long term	Medium
Loan growth	flattish high materiality	FY26	Medium
Warehouse lending average	$1.3 billion to $1.25 billion low materiality	Q2 · FY26	Medium

Deals & partnerships

American Bank Holding Corporation Merger completion and operational integration

Merger completed on January 1, 2026. Operational integration scheduled for September 2026.

Southwest Bancshares, Inc. Merger completion and operational integration

Merger completed on February 1, 2026. Operational integration scheduled for November 2026.

Stellar Bancorp Pending merger completion and operational integration

Merger announced on January 28, 2026. All necessary regulatory approvals received. Expected completion on July 1, 2026. Operational integration scheduled for March 2027.

Risks & headwinds

Increased Competition Ongoing

Competitors offering loan rates as low as 5.9% (vs. Prosperity's 6%) and money market rates of 4% (vs. Prosperity's 3%)

Mitigation:Maintaining pricing discipline, investing in securities at higher yields (4.85%), considering a dedicated bucket for A+ clients for competitive deals.

Organic Loan Decline Q1 FY26, expected to continue for 12-18 months post-acquisitions

Total loans (excluding mergers and warehouse lending) decreased 1.2% QoQ, or about 4.8% annually

Mitigation:Strategic focus on core deposits, disciplined lending, and potential for a dedicated construction loan bucket for key clients. Expects flat loan growth for the year due to acquisition runoff.

Integration Challenges and Asset Runoff Through March 2027 (for Stellar integration)

Going from a $38 billion bank to a $53-54 billion bank with three major integrations and a core system conversion

Mitigation:Primary focus on bringing the three deals together, ensuring smooth operational integration, and taking time to do it right. Acknowledged historical asset runoff post-acquisitions.

Credit Quality (Specific Large Charge-offs) Q1 FY26

Net charge-offs of $41 million in Q1 FY26, the largest in bank's history, primarily from two credits ($30 million from a start-up insurance company, another from a long-time client)

Mitigation:Management believes these were unique, one-off events not representing a trend, evidenced by lack of material additions to nonperforming loans. One credit was provisioned for in the prior quarter.

Macroeconomic Cooling in Texas Ongoing in 2026

Texas labor market has cooled noticeably after years of rapid expansion

Mitigation:Texas's size, diversity, and policy advantages position it well for a rebound; continued focus on core deposits and disciplined growth.

What to watch in Q2 FY26

Combined Net Interest Margin (NIM)

Q2 FY26 and year-end 2026

Current 3.51% (Q1 FY26)

Target Flat to slightly higher in Q2 FY26, exiting 2026 at 3.70% (combined with Stellar)

Why it matters

NIM expansion is a key driver of profitability, and management's guidance indicates continued improvement, especially with Stellar's integration.

if you kind of long term, and I'm going to include the Stellar Bank in our model for 2026, I think what the model shows that we'll be exiting combined NIM around 3.70% and -- but for having full year of Prosperity and half year of Stellar, average model shows around 3.60% for 2026.

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Q&A highlights

How is management thinking about NIM trajectory for next quarter and after Stellar integration, and were there any one-time factors impacting Q1 NIM?

Management expects Q2 NIM to be flat to slightly higher than Q1, with a combined NIM exit rate of 3.70% for 2026 and an average of 3.60%. Noted $4 million in non-accrual loan income in Q1 not expected to recur, and fewer days in the quarter helped.

“if you kind of long term, and I'm going to include the Stellar Bank in our model for 2026, I think what the model shows that we'll be exiting combined NIM around 3.70% and -- but for having full year of Prosperity and half year of Stellar, average model shows around 3.60% for 2026.”

asked by Catherine Mealor · answered by Asylbek Osmonov

2 min read 6 chapters

Detailed narrative

Strategic M&A and Integration

Prosperity Bancshares completed mergers with American Bank Holding Corporation on January 1, 2026, and Southwest Bancshares, Inc. on February 1, 2026. Additionally, the company announced the merger with Stellar Bancorp on January 28, 2026, for which all necessary regulatory approvals have been received, with an expected completion date of July 1, 2026.

The operational integration for American Bank is scheduled for September 2026, Southwest Bancshares for November 2026, and Stellar for March 2027. This significant M&A activity is transforming the bank from a $38 billion to a $53-54 billion institution, with a primary focus on successful integration.

Core System Conversion

The company successfully completed a core system conversion in February 2026, transitioning to a new DNA system. This upgrade significantly enhances processing capacity and efficiency, reducing the time required for system updates from potentially days to approximately 1.5 hours. This major technological undertaking was executed alongside the ongoing merger integrations, demonstrating the team's capacity for complex projects.

Texas Economy and Competition

Management highlighted the strong and diversified Texas economy, benefiting from population growth, a business-friendly environment, and various industries including energy, technology, and healthcare. However, the labor market has shown signs of cooling, and competition from out-of-state banks is intense. Competitors are offering lower loan rates (e.g., 5.9% compared to Prosperity's 6%) and higher money market deposit rates (e.g., 4% versus Prosperity's 3%), creating pressure on loan pricing and deposit costs.

Loan Portfolio Strategy and Discipline

Despite competitive pressures, Prosperity Bancshares is maintaining its disciplined approach to loan pricing and recourse levels. The bank prefers to invest in securities yielding 4.85% rather than engaging in low-margin, high-risk loan deals. To address competition in large construction deals, the company is considering allocating a $750 million to $1 billion bucket for very well-known, A+ rated clients, allowing for slightly more competitive terms while managing risk.

Capital Management and Shareholder Value

The company repurchased $57 million of common stock in Q1 FY26 at an average price of $68.15 per share. Management expressed strong confidence in future capital generation, projecting $500-600 million annually in excess capital after dividends for the combined entity.

This robust capital position provides ample capacity for continued share buybacks, particularly if the stock price remains attractive, and supports the long-term goal of building a larger, more capable bank.

Stellar Bancorp Performance and Outlook

Stellar Bancorp's Q1 FY26 adjusted net income of almost $30 million was noted as a clean number, tracking significantly above its original full-year earnings projection of $113 million. This strong performance is expected to contribute positively to the combined entity's earnings prospects.

Stellar also paid down its last remaining piece of sub debt on April 1, which is anticipated to further benefit its net interest margin.

Summary of the company's earnings call; see how call summaries are prepared. Not investment advice.