Catalyst Bancorp, Inc. — Director's Dealing 2023

May 12, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Catalyst Bancorp, Inc. (CLST)
CIK: 0001849867
Period of Report: 2023-05-11

Reporting Person: Zanco Joseph B (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-05-11	Common Stock	P	100	$9.4300	Acquired	5100	Indirect
2023-05-11	Common Stock	P	100	$9.4550	Acquired	5200	Indirect
2023-05-11	Common Stock	P	1200	$9.4900	Acquired	6400	Indirect
2023-05-11	Common Stock	P	901	$9.500	Acquired	7301	Indirect
2023-05-12	Common Stock	P	125	$9.75	Acquired	7426	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	31160	Direct
Common Stock	15000	Indirect
Common Stock	726.5391	Indirect
Common Stock	2467.2992	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$13.30	2032-09-01	Common Stock (52900)	52900	Direct

Footnotes

F1: Includes 21,160 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that vest 20% per year commencing on September 1, 2023.

F2: Includes shares acquired in the Catalyst Bank 401(k) Plan since the last filed Form 4, based on a report dated April 28, 2023.

F3: Includes shares allocated to the reporting person's account in the ESOP as of December 31, 2022.

F4: The options vest at a rate of 20% per year commencing on September 1, 2023.