CEO — Joseph B. Zanco: The filing discloses the renewal of an existing employment agreement and compensation terms for the sitting CEO, which is a routine administrative matter rather than a change in management status.

Results of Operations and Financial Condition On July 30, 2026, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended June 30, 2026. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amen…

Completion of Acquisition or Disposition of Assets Effective as of July 14, 2026, Catalyst Bancorp, Inc. (“Catalyst Bancorp”), a Louisiana corporation and the holding company for Catalyst Bank, a federally-chartered savings bank and wholly-owned subsidiary of Catalyst Bancorp, completed the previously announced acquisitions of Lakeside Bancshares, Inc., a Louisiana corporation (“Lakeside Bancshares”), and Lakeside Bank, a Louisiana banking corporation and the wholly-owned subsidiary of Lakesi…

Other Events On June 26, 2026, Catalyst Bancorp, Inc. (“Catalyst”), the parent company for Catalyst Bank, and Lakeside Bancshares, Inc. (“Lakeside”), the parent company for Lakeside Bank, issued a joint press release announcing that Lakeside shareholders have approved the pending merger with Catalyst and all required regulatory approvals have been obtained with respect to the previously announced mergers (the “Mergers”) of Lakeside with and into Catalyst and Lakeside Bank with and into Cataly…

Results of Operations and Financial Condition On April 30, 2026, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended March 31, 2026. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as am…

Entry into a Material Definitive Agreement On, April 7, 2026, Catalyst Bancorp, Inc., a Louisiana corporation ("Catalyst Bancorp"), and Catalyst Bank, a federally-chartered savings bank and wholly-owned subsidiary of Catalyst Bancorp, entered into an Agreement and Plan of Share Exchange and Merger (the “Merger Agreement”) with Lakeside Bancshares, Inc., a Louisiana corporation ("Lakeside Bancshares"), and Lakeside Bank, a Louisiana banking corporation and the wholly-owned subsidiary of Lakesi…

Other Events On April 8, 2026, Catalyst Bancorp and Lakeside Bancshares issued a press release announcing that they had entered into the Merger Agreement. A copy of the press release is filed as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference. ​ 3 Forward-Looking Statements This Current Report contains, and the officers and directors of Catalyst Bancorp and its subsidiary may from time to time make, forward-looking statements within the meaning of the Priv…

Results of Operations and Financial Condition On January 29, 2026, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended December 31, 2025. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934,…

Other Events On November 20, 2025, Catalyst Bancorp, Inc. (the “Company”) announced that its Board of Directors approved the Company’s sixth share repurchase program (the “November 2025 Repurchase Plan”). Under the November 2025 Repurchase Plan, the Company may purchase up to 205,000 shares, or approximately 5%, of the Company's outstanding common stock. The shares may be purchased in the open market or in privately-negotiated transactions from time to time depending upon market conditions an…

Changes in Registrant’s Certifying Accountant On October 31, 2025, the partners and professional staff of HORNE LLP (“HORNE”), which was engaged as the independent registered public accounting firm of the registrant, Catalyst Bancorp, Inc. (the “Company”), joined BDO USA, P.C. (“BDO”). As a result of this transaction, HORNE resigned as the Company’s independent registered public accounting firm on October 31, 2025. On November 5, 2025, following the resignation of HORNE, the Company, through…

Results of Operations and Financial Condition On October 23, 2025, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended September 30, 2025. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934,…

Results of Operations and Financial Condition On July 24, 2025, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended June 30, 2025. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amen…

Results of Operations and Financial Condition On April 24, 2025, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended March 31, 2025. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as am…

Changes in Registrant’s Certifying Accountant As previously reported in the Original Form 8-K, the Board of Directors of Catalyst Bancorp, Inc. (the “Company”) approved the engagement of HORNE LLP (“HORNE”) as the Company’s independent registered public accounting firm for the Company’s fiscal year ending December 31, 2025. Castaing, Hussey & Lolan, LLC (“CHL”), continued as the Company’s independent registered public accounting firm for the year ended December 31, 2024. On March 28, 2025, wh…

Results of Operations and Financial Condition On January 23, 2025, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended December 31, 2024. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934,…

Changes in Registrant’s Certifying Accountant The Board of Directors of Catalyst Bancorp, Inc. (the “Company”), through its Audit Committee (the “Audit Committee”) conducted a competitive process to determine the Company’s independent registered public accounting firm commencing with the Company’s fiscal year ending December 31, 2025. The Audit Committee invited several independent registered public accounting firms to participate in this process. Following review of proposals from the indepe…

Other Events On November 25, 2024, Catalyst Bancorp, Inc. (the “Company”) announced that its Board of Directors approved the Company’s fifth share repurchase program (the “November 2024 Repurchase Plan”). Under the November 2024 Repurchase Plan, the Company may purchase up to 215,000 shares, or approximately 5%, of the Company's outstanding common stock. The shares may be purchased in the open market or in privately-negotiated transactions from time to time depending upon market conditions an…

Results of Operations and Financial Condition On October 24, 2024, Catalyst Bancorp, Inc. (the “Company”) announced its results for the quarter ended September 30, 2024. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934,…

Results of Operations and Financial Condition On July 31, 2024, Catalyst Bancorp, Inc. (the “Company”) announced its quarterly results for the quarter ended June 30, 2024. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The information furnished under items 2.02 and 9.01 of this Current Report on Form 8-K, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 193…

Chief Risk Officer — Don Ledet: An employment agreement was entered into with the existing Chief Risk Officer, Don Ledet.

Regulation FD Disclosure On May 2, 2024, the Company announced that its Board of Directors approved the Company’s fourth share repurchase plan (the “May 2024 Repurchase Plan”). Under the May 2024 Repurchase Plan, the Company may purchase up to 227,000 shares, or approximately 5%, of the Company's outstanding common stock. The shares may be purchased in the open market or in privately-negotiated transactions from time to time depending upon market conditions and other factors. For additional i…

Results of Operations and Financial Condition On May 2, 2024, Catalyst Bancorp, Inc. (the “Company”) announced its quarterly results for the quarter ended March 31, 2024. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The Press Release attached hereto, which is incorporated herein by reference, is being furnished to the SEC and shall not be deemed "filed" for any purpose except as otherwise provided herein.

Results of Operations and Financial Condition On January 25, 2024, the Company announced its quarterly and annual results for the periods ended December 31, 2023. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The Press Release attached hereto, which is incorporated herein by reference, is being furnished to the SEC and shall not be deemed "filed" for any purpose except as otherwise provided herein. ​

Regulation FD Disclosure On November 21, 2023, the Registrant’s Board of Directors approved the Company’s third share repurchase program (the “November 2023 Repurchase Plan”). Under the November 2023 Repurchase Plan, the Company may purchase up to 240,000 shares, or approximately 5%, of the Company's outstanding common stock. The shares may be purchased in the open market or in privately-negotiated transactions from time to time depending upon market conditions and other factors. ​

Results of Operations and Financial Condition On October 26, 2023, the Registrant announced its results of operations for the quarter ended September 30, 2023. A copy of the related press release (the "Press Release") is attached as Exhibit 99.1 to this Current Report on Form 8-K. The Press Release attached hereto is being furnished to the SEC and shall not be deemed "filed" for any purpose except as otherwise provided herein. ​