ISSUER PROFILE · CIK 0001849867 · CUSIP 14888L101

Catalyst Bancorp, Inc.CLST

2 13D/G filings 1 distinct filers 14 insider transactions (365d)

1 BOARD-CHANGE

Post-Filing Returns · across 2 activist filings on this issuer

Median 30d

+0.5%

avg +0.5%

Median 60d

+4.3%

avg +4.3%

Median 90d

+8.6%

avg +8.6%

Median 180d

—

avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Activist filings

1 SCHEDULE 13D/A · 1 SCHEDULE

Distinct filers

single filer

Insiders (365d)

12 buys · 2 sales

Latest short DTC

1.72

as of 2026-05-29

Filed	Form	Filer	Stake	Shares	Intent
2026-04-13	SCHEDULE 13D/A	Stilwell Joseph	8.60%	348,590	BOARD-CHANGE	view →
2026-01-12	SCHEDULE	Stilwell Joseph	6.30%	260,009		view →

Date	Insider	Role	Type	Shares	Price	Value
2026-06-10	Kleiser Kirk E.	director	Sale	5,000	$16.04	$80K
2026-06-10	Kleiser Kirk E.	director	Sale	1,000	$16.04	$16K
2026-06-10	Kleiser Kirk E.	director	Award	1,058	—	—
2026-06-10	Kleiser Kirk E.	director	Buy	2,850	$16.13	$46K
2026-06-10	Kleiser Kirk E.	director	Buy	2,350	$16.09	$38K
2026-06-10	Kleiser Kirk E.	director	Buy	1,000	$16.11	$16K
2026-06-10	Zanco Joseph B	director, officer	Award	5,290	—	—
2026-06-10	Zanco Joseph B	director, officer	Award	13,225	$15.96	$211K
2026-06-10	LeBouef Craig C.	director	Award	1,058	—	—
2026-06-10	LeBouef Craig C.	director	Award	2,645	$15.96	$42K
2026-06-10	Lafleur Frederick R.	director	Award	1,058	—	—
2026-06-10	Lafleur Frederick R.	director	Award	2,645	$15.96	$42K
2026-06-10	Kidder Todd A.	director	Award	1,058	—	—
2026-06-10	Kidder Todd A.	director	Award	2,645	$15.96	$42K

Settlement	Short Interest	Days to Cover	% Δ vs prior
2026-05-29	7,064	1.72	-3.2%
2026-05-15	7,296	1.00	-0.9%
2026-04-30	7,359	2.82	-11.8%
2026-04-15	8,345	1.00	+19.0%
2026-03-31	7,011	1.86	-1.1%
2026-03-13	7,089	1.18	-6.1%
2026-02-27	7,552	2.40	+7.2%
2026-02-13	7,044	1.38	+17.6%
2026-01-30	5,991	1.05	+1.4%
2026-01-15	5,906	1.68	+10.7%
2025-12-31	5,334	1.19	-30.6%
2025-12-15	7,683	2.14	-27.9%

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