Catalyst Bancorp, Inc. — Director's Dealing 2025

Jun 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Catalyst Bancorp, Inc. (CLST)
CIK: 0001849867
Period of Report: 2025-06-10

Reporting Person: Kleiser Kirk E. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-10	Common Stock	A	1058	—	Acquired	24522	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-06-10	Stock Option (Right to Buy)	$12.08	A	2645	Acquired	2035-06-10	Common Stock (2645)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	12799	Indirect
Common Stock	1000	Indirect
Common Stock	2800	Indirect
Common Stock	5000	Indirect
Common Stock	4400	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

Footnotes

F1: Represents the grant of shares pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that vest 20% per year commencing on June 10, 2026.

F2: Includes 5,080 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: The 1,000 shares are held by the K&G On the GEAUX LLC of which the reporting person is a senior managing member and 60% owner.

F4: The 5,000 shares are held by the K Kleiser LLC of which the reporting person is the sole member.

F5: The 4,400 shares are held by Kleiser Enterprises, Inc of which the reporting person is a senior managing member and 60% owner.

F6: The options are vesting at a rate of 20% per year commenced on September 1, 2023.

F7: The options vest at a rate of 20% per year commencing on June 10, 2026.