Catalyst Bancorp, Inc. · NASDAQ:CLST

Catalyst Bancorp — Merger or Acquisition (April 2026)

22 slides from Catalyst Bancorp's merger presentation, Apr 8, 2026

  1. Slide 1: Strengthening a South Louisiana Community Banking Franchise

    10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto Strengthening a South Louisiana Community Banking Franchise to Acquire April 8, 2026

  2. Slide 2: Important Information and Disclaimers

    2 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Important Information and Disclaimers These disclaimers apply to this document and the verbal or written

  3. Slide 3: Important Information and Disclaimers

    3 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Important Information and Disclaimers Trademark and Tradenames; Industry and Market Data This Presentati

  4. Slide 4: Strategic Rationale and Estimated Pro Forma Highlights

    4 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 $470M Deposits ▪ Drives Substantial Balance Sheet Growth Trajectory ▪ Appealing Combined Branch Network

  5. Slide 5: Transaction Summary

    5 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Merger Structure & Consideration • Entities: Catalyst Bancorp, Inc. (CLST) & Lakeside Bancshares, Inc. (

  6. Slide 6: Pro Forma Balance Sheet Highlights

    6 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Pro Forma Balance Sheet Highlights Note: Data as of September 30, 2026; balance sheet contribution does

  7. Slide 7: Complementary Loan & Deposit Mix

    7 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 $170.2M Total Loan Composition Deposit Mix $236.3M Total $406.5M Total Pro Forma $185.3M Total $287.6M T

  8. Slide 8: Comprehensive Due Diligence Process

    8 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Investment Portfolio Due Diligence Overview • Facilitated a coordinated, enterprise-wide due diligence p

  9. Slide 9: Key M&A Assumptions

    9 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Estimated Cost Savings • Equal to approximately 30% of LKSB’s noninterest expense • $2.6 million in pre-

  10. Slide 10: Company Overview

    10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto Company Overview

  11. Slide 11: Lakeside Bancshares, Inc.

    11 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Lakeside Bancshares, Inc. ▪ Parent Company of Lakeside Bank, founded in 2010 ▪ Traded on OTC Market sin

  12. Slide 12: Market Dynamics

    12 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Market Dynamics Note: Community Bank defined as those with < $15.0B in Total Assets Note: Deposit marke

  13. Slide 13: Demographic Information

    13 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Demographic Information Note: Major MSA’s defined as MSA’s with population > 100K Source: S&P Capital I

  14. Slide 14: Company Overview

    10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto Company Overview

  15. Slide 15: Catalyst Bancorp, Inc.

    15 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Catalyst Bancorp, Inc. ▪ Subsidiary: Catalyst Bank ▪ Founded in 1922 and headquartered in Opelousas, LA

  16. Slide 16: Leadership Team

    16 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Leadership Team Joseph B. Zanco, President, Chief Executive Officer & Director Joseph (“Joe”) B. Zanco,

  17. Slide 17: Operating Markets

    17 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Operating Markets Source: S&P Capital IQ Pro; Data USA; Opportunity Louisiana; City-Data; FDIC’s Summar

  18. Slide 18: Returning Capital To Shareholders

    18 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Returning Capital To Shareholders Source: CLST’s SEC filings 23% of shares originally issued bought bac

  19. Slide 19: Financial Trends

    19 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 (1) Non-GAAP measure. See Appendix. (2) 2024Y EPS includes impact of $5.5 million pre-tax expense relat

  20. Slide 20: Appendix

    10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto Appendix

  21. Slide 21: Non-GAAP Reconciliation

    21 31 52 105 217 217 217 189 215 238 49 87 155 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto 8 123 189 222 180 82 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 8 123 189 Non-GAAP Reconciliation Source: Company Documents Dollars in thousands, except per share data 2021 2022

  22. Slide 22: 10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto

    10 65 107 71 144 220 247 161 45 217 217 217 254 222 137 Roboto

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