Catalyst Bancorp, Inc. — Director's Dealing 2025

Dec 22, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Catalyst Bancorp, Inc. (CLST)
CIK: 0001849867
Period of Report: 2025-12-18

Reporting Person: Scruggins Matthew L. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-18	Common Stock	G	332	—	Acquired	24854	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	10000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$13.30	2032-09-01	Common Stock (21160)	21160	Direct
Stock Option (Right to Buy)	$12.08	2035-06-10	Common Stock (2645)	2645	Direct

Footnotes

F1: Shares received as a gift from mother.

F2: Includes 3,388 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that reflect the unvested portion of a grant amount originally covering 8,464 shares that commenced vesting 20% per year on September 1, 2023.

F3: These options are vesting at a rate of 20% per year that commenced on September 1, 2023.

F4: The options vest at a rate of 20% per year commencing on June 10, 2026.