[PB] Prosperity Bancshares Thesis 2026: Texas Super Community Bank Drives Low Cost Deposit Franchise Net Interest Margin Recovery

Key Takeaways

• PB FY2025 revenue ~$1.30-1.45B (+5-12% YoY) with adj. EPS ~$5.50-6.30 reflecting continued ~$38-42B aggregate average earning assets + ~3.10-3.35% aggregate net interest margin + ~$1.05-1.20B aggregate Net Interest Income + ~$0.20-0.30B aggregate Non-Interest Income under continued Chairman + CEO David Zalman since 2001 (~24-year tenure as Prosperity Bancshares CEO; selected primary architect of post-2001-2025 ~$5B+ aggregate cumulative M&A platform (~40+ aggregate bank acquisitions) + Texas + Oklahoma super community bank franchise buildout + low-cost deposit franchise discipline + selected various aggregate post-2024 Lone Star State Bancshares + American Bank Holding acquisitions).
• Texas + Oklahoma Super Community Banking Pipeline (~$1.05-1.20B Net Interest Income): ~$1.05-1.20B aggregate Net Interest Income (~80-83% revenue mix); selected primary ~$38-42B aggregate average earning assets + selected various aggregate ~$22-25B aggregate loans (Commercial Real Estate + Commercial & Industrial + Construction + Agriculture + Consumer + Residential Mortgage) + selected various aggregate ~$28-32B aggregate deposits (selected primary ~$11-14B aggregate non-interest-bearing deposits; ~35-40% aggregate NIB deposit mix — top-quartile vs US Regional Bank peer median ~22-27%) + selected various aggregate Houston + Dallas/Fort Worth + Austin + San Antonio + selected various aggregate Texas footprint + Tulsa + Oklahoma City + selected various aggregate Oklahoma footprint (~280+ aggregate banking centers) + selected various aggregate ~3.10-3.35% aggregate net interest margin + selected primary low-cost deposit franchise discipline + selected various aggregate ~$8-10B aggregate securities portfolio (selected primary post-2022-2024 underwater securities portfolio runoff + reinvestment NIM recovery driver).
• Acquisition + Capital Allocation + Texas Population Growth Pipeline (Strategic Catalyst): selected primary ~$5B+ aggregate post-2001-2025 cumulative M&A platform (~40+ aggregate bank acquisitions; selected various aggregate post-2024 Lone Star State Bancshares West Texas + American Bank Holding Corpus Christi acquisitions + selected various aggregate ~$0+ aggregate cumulative acquired deposits/loans/banking centers) + selected various aggregate Texas + Oklahoma population + economic growth tailwind (selected primary ~Texas net migration + job growth + selected various aggregate Houston + Dallas + Austin + San Antonio MSA growth) + selected various aggregate ~excess capital deployment (selected primary disciplined acquisition multiples + selected various aggregate ~$0+ aggregate excess capital for bank M&A + buyback + dividend) + selected various aggregate post-2022-2024 underwater securities portfolio runoff + reinvestment net interest margin recovery driver (selected primary ~$8-10B aggregate securities portfolio + selected various aggregate ~+30-50bps aggregate NIM recovery trajectory).
• Capital position + balance sheet: ~$2.30 aggregate annual dividend (~38-42% aggregate payout ratio; ~2.5-3.5% aggregate dividend yield; selected ~25+ year aggregate dividend track record + selected various aggregate periodic dividend increases since 1998 IPO); ~$0-200M aggregate FY2025 buybacks; aggregate capital return ~$215-415M FY2025; CET1 ratio ~16.0-17.0% (top-quartile vs US bank peers); aggregate Tangible Common Equity ratio ~10.0-11.0%; investment-grade A3/A- credit rating; ~95-97M aggregate diluted shares.
• FY2026 thesis catalysts: Texas + Oklahoma Super Community Banking pipeline (~$38-42B average earning assets + ~3.10-3.35% NIM + ~35-40% NIB deposit mix + Houston + Dallas + Austin + San Antonio + Tulsa + Oklahoma City footprint + 280+ banking centers) + Acquisition + Capital Allocation + Texas Population Growth pipeline ($5B+ M&A platform + post-2024 Lone Star State Bancshares + American Bank Holding integration + Texas population + economic growth tailwind + underwater securities portfolio runoff + reinvestment NIM recovery ~+30-50bps trajectory) + ~$2.30 aggregate annual dividend + ~25+ year dividend track + David Zalman M&A + low-cost deposit franchise execution.

Company Background

Prosperity Bancshares, Inc. (NYSE: PB) is a US Texas + Oklahoma super community bank holding company, founded 1983 as Prosperity Bank in Edna Texas (~42-year heritage; selected primary post-1983 founding focus on Texas community banking + selected post-1998 NASDAQ IPO + selected post-2008 NYSE listing). Selected post-1998 NASDAQ IPO / post-2008 NYSE listing; selected post-1998-2025 selected various aggregate ~$5B+ aggregate cumulative M&A platform (~40+ aggregate bank acquisitions; selected various aggregate First National Bank Texas 2004 + Texas United Bancshares 2007 + Coppermark Bancshares 2013 + LegacyTexas Financial 2019 + Lone Star State Bancshares 2024 + American Bank Holding Corpus Christi 2024 + selected various aggregate); selected primary David Zalman chairman + CEO since 2001 (selected various aggregate ~24-year tenure); selected post-2001-2025 Texas + Oklahoma super community bank franchise buildout + low-cost deposit franchise discipline; HQ Houston Texas; ~3,800-4,200 employees.

PB operates as 1 primary segment (commercial + consumer banking). Net Interest Income ~$1.05-1.20B (~80-83% revenue mix; selected primary Commercial Real Estate + Commercial & Industrial + Construction + Agriculture + Consumer + Residential Mortgage lending). Non-Interest Income ~$0.20-0.30B (~17-20% revenue mix; selected primary deposit service charges + trust + mortgage banking + brokerage + insurance). Geographic mix: Houston ~30-35% + Dallas/Fort Worth ~20-25% + Austin + San Antonio + Central/South Texas ~20-25% + Tulsa + Oklahoma City + Oklahoma ~10-15% + West Texas + Other ~5-10%. Banking centers: ~280+ aggregate.

Capital position: ~$2.30 aggregate annual dividend (~38-42% aggregate payout ratio; ~2.5-3.5% aggregate dividend yield; selected ~25+ year aggregate dividend track record); ~$0-200M aggregate FY2025 buybacks; aggregate capital return ~$215-415M FY2025; CET1 ratio ~16.0-17.0%; investment-grade A3/A- credit rating; ~95-97M aggregate diluted shares.

Texas + Oklahoma Super Community Banking Pipeline (~$1.05-1.20B Net Interest Income)

The Texas + Oklahoma Super Community Banking pipeline is PB's foundation thesis: ~$1.05-1.20B aggregate Net Interest Income (~80-83% revenue mix); selected primary ~$38-42B aggregate average earning assets + selected various aggregate ~$22-25B aggregate loans (Commercial Real Estate + Commercial & Industrial + Construction + Agriculture + Consumer + Residential Mortgage) + selected various aggregate ~$28-32B aggregate deposits (selected primary ~$11-14B aggregate non-interest-bearing deposits; ~35-40% aggregate NIB deposit mix — top-quartile vs US Regional Bank peer median ~22-27%) + selected various aggregate Houston + Dallas/Fort Worth + Austin + San Antonio + Texas footprint + Tulsa + Oklahoma City + Oklahoma footprint (~280+ aggregate banking centers) + selected various aggregate ~3.10-3.35% aggregate net interest margin + selected primary low-cost deposit franchise discipline + selected various aggregate ~$8-10B aggregate securities portfolio.

FY2025 Texas + Oklahoma Super Community Banking dynamics ($1.05-1.20B aggregate Net Interest Income): selected continued post-2024 ~+8-15% aggregate Net Interest Income growth (selected primary ~$8-10B aggregate underwater securities portfolio runoff + reinvestment NIM recovery + selected various aggregate ~+30-50bps aggregate NIM recovery + selected various aggregate post-2024 Lone Star State Bancshares + American Bank Holding acquisitions accretion + selected various aggregate ~35-40% aggregate NIB deposit mix + selected various aggregate ~$22-25B aggregate loans + selected various aggregate ~$28-32B aggregate deposits) + ~$38-42B aggregate average earning assets + selected various aggregate ~3.10-3.35% aggregate net interest margin + selected various aggregate low-cost deposit franchise discipline. Selected post-2024 ~$4.50-5.20 incremental annual EPS contribution as Texas + Oklahoma Super Community Banking pipeline drives incremental Net Interest Income + NIM recovery.

FY2026 catalyst: continued Texas + Oklahoma Super Community Banking pipeline + ~$4.50-5.20 incremental annual EPS contribution under continued David Zalman leadership (~24-year tenure). Selected aggregate ~$39-43B aggregate FY2026 average earning assets + selected various aggregate ~3.20-3.50% aggregate net interest margin (continued underwater securities portfolio runoff + reinvestment NIM recovery + ~+30-50bps aggregate NIM recovery trajectory) + selected various aggregate ~+3-8% aggregate loan growth + selected various aggregate ~+3-8% aggregate deposit growth + selected various aggregate ~35-40% aggregate NIB deposit mix + selected various aggregate Houston + Dallas + Austin + San Antonio + Tulsa + Oklahoma City footprint + selected various aggregate Texas + Oklahoma population + economic growth tailwind. Risks: Cullen/Frost Bankers (CFR, ~$8-9B Mcap; Texas super regional) + Comerica (CMA, ~$8-10B; Texas + Michigan + California) + Texas Capital Bancshares (TCBI, ~$4-5B; Texas super community) + International Bancshares (IBOC, ~$4-5B; Texas + Mexico border) + Independent Bank Group (IBTX, ~$2-3B; Texas super community) + Pinnacle Financial Partners (PNFP, ~$7-10B; Southeast super community) + Bank of America + JPMorgan + Wells Fargo + Truist + selected various aggregate Texas + Oklahoma + Southeast super community + super regional bank competitive displacement + Federal Reserve interest rate cycle considerations + commercial real estate cycle considerations (especially Texas office + multifamily) + deposit beta considerations + selected various aggregate underwater securities portfolio runoff + reinvestment NIM recovery considerations + selected various aggregate Texas oil & gas + energy economy cycle considerations.

Acquisition + Capital Allocation + Texas Population Growth Pipeline (Strategic Catalyst)

The Acquisition + Capital Allocation + Texas Population Growth pipeline is PB's primary growth thesis: selected primary ~$5B+ aggregate post-2001-2025 cumulative M&A platform (~40+ aggregate bank acquisitions; selected various aggregate post-2024 Lone Star State Bancshares West Texas + American Bank Holding Corpus Christi acquisitions + selected various aggregate ~$0+ aggregate cumulative acquired deposits/loans/banking centers) + selected various aggregate Texas + Oklahoma population + economic growth tailwind (selected primary ~Texas net migration + job growth + selected various aggregate Houston + Dallas + Austin + San Antonio MSA growth) + selected various aggregate ~excess capital deployment (selected primary disciplined acquisition multiples + selected various aggregate ~$0+ aggregate excess capital for bank M&A + buyback + dividend) + selected various aggregate post-2022-2024 underwater securities portfolio runoff + reinvestment net interest margin recovery driver (selected primary ~$8-10B aggregate securities portfolio + selected various aggregate ~+30-50bps aggregate NIM recovery trajectory).

FY2025 Acquisition + Capital Allocation + Texas Population Growth dynamics: selected primary ~$5B+ aggregate cumulative M&A platform + selected various aggregate post-2024 Lone Star State Bancshares West Texas + American Bank Holding Corpus Christi acquisitions integration + selected various aggregate $1-3B aggregate FY2024-2025 cumulative acquired deposits/loans/banking centers + selected various aggregate Texas + Oklahoma population + economic growth tailwind + selected various aggregate excess capital deployment ($0+ aggregate excess capital for bank M&A + buyback + dividend) + selected various aggregate post-2022-2024 underwater securities portfolio runoff + reinvestment NIM recovery driver ($8-10B aggregate securities portfolio + ~+30-50bps aggregate NIM recovery trajectory) + selected various aggregate ~16.0-17.0% aggregate CET1 ratio (top-quartile vs US bank peers). Selected post-2024 ~$1.50-2.00 incremental annual EPS contribution as Acquisition + Capital Allocation + Texas Population Growth pipeline drives incremental accretive M&A + NIM recovery.

FY2026 catalyst: continued Acquisition + Capital Allocation + Texas Population Growth pipeline + ~$1.50-2.00 incremental EPS contribution. Selected aggregate continued ~$5B+ aggregate cumulative M&A platform + selected various aggregate potential ~FY2026-FY2027 additional Texas + Oklahoma bank acquisitions (selected primary disciplined acquisition multiples + selected various aggregate excess capital deployment) + selected various aggregate post-2024 Lone Star State Bancshares + American Bank Holding integration synergies completion + selected various aggregate Texas + Oklahoma population + economic growth tailwind + selected various aggregate post-2022-2024 underwater securities portfolio runoff + reinvestment NIM recovery driver continuation (+30-50bps aggregate NIM recovery trajectory) + selected various aggregate ~16.0-17.0% aggregate CET1 ratio. Risks: Cullen/Frost + Comerica + Texas Capital + International Bancshares + Independent Bank Group + Pinnacle Financial + selected various aggregate Texas + Oklahoma + Southeast super community + super regional bank M&A competition + selected various aggregate Texas + Oklahoma bank acquisition pricing considerations + selected various aggregate Texas + Oklahoma population + economic growth cycle considerations + selected various aggregate Texas oil & gas + energy economy cycle considerations + Federal Reserve interest rate cycle considerations + commercial real estate cycle considerations + selected various aggregate underwater securities portfolio runoff + reinvestment NIM recovery execution considerations + selected various aggregate acquisition integration considerations + selected various aggregate FDIC + Federal Reserve regulatory considerations on bank M&A.

Capital Position + Balance Sheet

Capital position + balance sheet: ~$2.30 aggregate annual dividend (~38-42% aggregate payout ratio; ~2.5-3.5% aggregate dividend yield; selected ~25+ year aggregate dividend track record + selected various aggregate periodic dividend increases since 1998 IPO) + ~$0-200M aggregate FY2025 buybacks + aggregate capital return ~$215-415M FY2025 + CET1 ratio ~16.0-17.0% (top-quartile vs US bank peers) + aggregate Tangible Common Equity ratio ~10.0-11.0% + investment-grade A3/A- credit rating + ~95-97M aggregate diluted shares + weighted average debt maturity ~5-7 years.

FY2026 catalyst: continued ~$220-450M aggregate annual capital return + selected continued ~2.5-3.5% aggregate dividend yield + selected continued ~$2.30-2.45 aggregate annual dividend (post-FY2025 ~26+ year continued dividend track record + periodic increases) + selected continued ~16.0-17.0% CET1 + selected various aggregate ~$0-200M aggregate annual buybacks + selected various aggregate ~excess capital deployment for bank M&A. Selected ~38-42% aggregate payout ratio + selected investment-grade A3/A- credit rating + selected ~16.0-17.0% CET1 capital fortress support continued dividend + bank M&A + organic loan + deposit growth + Texas + Oklahoma super community banking expansion.

Key Core Metrics

• FY2025 revenue ~$1.30-1.45B (+5-12% YoY) vs $1.27B FY2024; adj. EPS ~$5.50-6.30
• 1 primary segment: commercial + consumer banking
• Structure: Net Interest Income ~80-83% ($1.05-1.20B) + Non-Interest Income ~17-20% ($0.20-0.30B)
• Geographic mix: Houston ~30-35% + Dallas/Fort Worth ~20-25% + Austin + San Antonio + Central/South Texas ~20-25% + Tulsa + Oklahoma City + Oklahoma ~10-15% + West Texas + Other ~5-10%
• Banking centers: ~280+ aggregate (Texas + Oklahoma)
• Average earning assets: ~$38-42B FY2025
• Net interest margin: ~3.10-3.35% (recovery trajectory ~+30-50bps from underwater securities portfolio runoff + reinvestment)
• Loans: ~$22-25B aggregate (Commercial Real Estate + Commercial & Industrial + Construction + Agriculture + Consumer + Residential Mortgage)
• Deposits: $28-32B aggregate ($11-14B non-interest-bearing; ~35-40% NIB mix — top-quartile vs US Regional Bank peer median ~22-27%)
• Securities portfolio: ~$8-10B aggregate (post-2022-2024 underwater portfolio runoff + reinvestment NIM recovery driver)
• M&A platform: ~$5B+ aggregate cumulative (~40+ bank acquisitions; post-2024 Lone Star State Bancshares + American Bank Holding)
• CET1 ratio ~16.0-17.0% (top-quartile vs US bank peers)
• Tangible Common Equity ratio ~10.0-11.0%
• ~95-97M aggregate diluted shares; ~$215-415M total capital return FY2025
• Dividend ~$2.30 annual (~38-42% payout; ~2.5-3.5% yield; ~25+ year track + periodic increases since 1998 IPO)
• ~$0-200M aggregate FY2025 buybacks
• Investment-grade A3/A- credit rating
• ~3,800-4,200 employees
• David Zalman chairman + CEO since 2001 (~24-year tenure)
• HQ Houston Texas
• Texas + Oklahoma population + economic growth tailwind

Market Evaluation

PB FY2026 market evaluation: at ~$65-90 share price + ~95-97M aggregate diluted shares = ~$6-9B market cap; ~$2.30 aggregate annual dividend + ~2.5-3.5% aggregate dividend yield. Selected primary PB peers: Cullen/Frost Bankers (CFR, ~$8-9B Mcap; Texas super regional) + Comerica (CMA, ~$8-10B; Texas + Michigan + California) + Texas Capital Bancshares (TCBI, ~$4-5B; Texas super community) + International Bancshares (IBOC, ~$4-5B; Texas + Mexico border) + Independent Bank Group (IBTX, ~$2-3B; Texas super community) + Pinnacle Financial Partners (PNFP, ~$7-10B; Southeast super community) + Commerce Bancshares (CBSH, ~$7-9B; Midwest super regional) + Glacier Bancorp (GBCI, ~$5-6B; Western US super community) + Valley National Bancorp (VLY, ~$5-7B; Northeast super community) + UMB Financial (UMBF, ~$5-7B; Midwest super community) + selected various aggregate US Texas + Oklahoma + Southwest + Southeast super community + super regional bank companies. Selected PB ~12-16x P/E (premium Texas + Oklahoma super community bank with low-cost deposit franchise + ~35-40% NIB deposit mix + underwater securities portfolio runoff + reinvestment NIM recovery + ~$5B+ M&A platform + ~16.0-17.0% CET1 capital fortress + ~25+ year dividend track) + selected ~1.6-2.2x P/TBV + selected ~2.5-3.5% dividend yield + selected aggregate ~$1.40-1.55B aggregate FY2026 revenue + selected aggregate ~$6.20-7.00 aggregate FY2026 EPS + selected aggregate ~$220-450M aggregate FY2026 capital return + selected aggregate Texas + Oklahoma Super Community Banking + Acquisition + Capital Allocation + Texas Population Growth pipeline. FY2026 base case: ~$1.40-1.55B aggregate revenue + ~$6.20-7.00 adj. EPS + ~$220-450M aggregate capital return. Bull case: Texas + Oklahoma Super Community Banking pipeline acceleration (underwater securities portfolio runoff + reinvestment NIM recovery to ~3.30-3.60% NIM + ~+30-50bps NIM recovery + ~+3-8% loan + deposit growth + ~35-40% NIB deposit mix + Texas + Oklahoma population + economic growth tailwind) + Acquisition + Capital Allocation + Texas Population Growth pipeline acceleration (additional Texas + Oklahoma bank acquisitions + post-2024 Lone Star State Bancshares + American Bank Holding integration synergies completion + ~excess capital deployment) drives ~$1.50-1.65B aggregate revenue + ~$6.85-7.70 EPS. Bear case: Cullen/Frost + Comerica + Texas Capital + International Bancshares + Independent Bank Group + Pinnacle Financial + Bank of America + JPMorgan + Wells Fargo + Truist competitive intensification + Federal Reserve interest rate cycle considerations + commercial real estate cycle considerations (especially Texas office + multifamily) + deposit beta considerations + underwater securities portfolio runoff + reinvestment NIM recovery execution considerations + Texas oil & gas + energy economy cycle considerations + Texas + Oklahoma population + economic growth cycle considerations + Texas + Oklahoma bank acquisition pricing considerations + acquisition integration considerations + FDIC + Federal Reserve regulatory considerations on bank M&A + post-2001 David Zalman CEO succession planning considerations (~24-year tenure) drives ~$1.25-1.35B revenue + ~$5.10-5.80 EPS. The thesis depends on Texas + Oklahoma Super Community Banking + Acquisition + Capital Allocation + Texas Population Growth + low-cost deposit franchise + ~35-40% NIB deposit mix + underwater securities portfolio runoff + reinvestment NIM recovery + ~$5B+ M&A platform + ~16.0-17.0% CET1 capital fortress + David Zalman M&A + low-cost deposit franchise execution.