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Nasdaq · CIK 0001849867

CLST Catalyst Bancorp, Inc.

Insider trading from SEC Form 4. Last filing 25 d ago. Close $16.80 on Oct 9, 2026, +27% from the 52-week low and -7% from the high.

Catalyst Bancorp, Inc. (CLST) has 33 SEC Form 4 filings on file from 10 insiders, the latest filed on Sep 18, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.

7 open-market trades have been scored at CLST. The newest: Kirk E. Kleiser (director) bought $100k of stock on Jun 10, 2026, filed Jun 11, 2026, scored 31 (weak). The largest of the 7 shown: Joseph B Zanco (PRESIDENT AND CEO) bought $172k on Dec 2, 2024, scored 54 (moderate). 2 insiders bought within 14 days of each other around Dec 2, 2024.

CLST closed at $16.80 on Oct 9, 2026, 27% above its 52-week low and 7% below its 52-week high.

1 Form 144 notice of planned sales is on file, the latest filed Oct 28, 2025.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
10
with a Form 4 at this company

Price and insider trades, last year

CLSTOct 9, 2026 · close 16.80

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at Catalyst Bancorp, Inc., scored.

ScoreInsiderValueHoldingsPrice contextFiled
31WeakKirk E. Kleiser
director
buy
$100k
6,200 shares
+24%+32% from low-6% from high
45ModerateKirk E. Kleiser
director
sell
$96k
6,000 shares
-120%+32% from low-6% from high
29WeakKirk E. Kleiser
director
buy
$64k
4,750 shares
+37%+21% from low0% from high
43ModerateKirk E. Kleiser
director
sell
$64k
4,750 shares
-100%+21% from low0% from high
18WeakKirk E. Kleiser
director
buy
$21k
1,750 shares
+14%+13% from low0% from high
54ModerateJoseph B Zanco
PRESIDENT AND CEO
buy
$172k
14,583 shares
+196%-
33WeakKirk E. Kleiser
director
buy
$22k
1,900 shares
+76%-

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Oct 28, 2025 Kleiser Kirk E.
Director
4,750
0.11% of outstanding
$64kOct 28, 2025none

Transactions

The newest 50 of 70 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Sep 16, 2026Kirk E. Kleiser
director
MOption exercise
Common Stock
+529$12.08$6,39045,88725 d ago
Sep 16, 2026Kirk E. Kleiser
director
MOption exercise
Common Stock
+16,928$13.30$225k45,35825 d ago
Sep 16, 2026Kirk E. Kleiser
director
MOption exercise
Stock Option (Right to Buy)derivative
-16,928$0.00$04,23225 d ago
Sep 16, 2026Kirk E. Kleiser
director
MOption exercise
Stock Option (Right to Buy)derivative
-529$0.00$02,11625 d ago
Sep 1, 2026Amanda B. Quebedeaux
Chief Operations Officer
FTax withholding
Common Stock
-553$17.81$9,8499,57941 d ago
Sep 1, 2026Jacques L.J. Bourque
CHIEF FINANCIAL OFFICER
FTax withholding
Common Stock
-131$17.81$2,3334,33541 d ago
Sep 1, 2026Joseph B Zanco
PRESIDENT AND CEO
FTax withholding
Common Stock
-1,158$17.81$21k37,00241 d ago
Jun 10, 2026Don P Ledet
CHIEF RISK OFFICER
FTax withholding
Common Stock
-131$15.96$2,09112,706Jun 12, 2026
Jun 10, 2026Jacques L.J. Bourque
CHIEF FINANCIAL OFFICER
FTax withholding
Common Stock
-131$15.96$2,0914,466Jun 12, 2026
Jun 10, 2026Amanda B. Quebedeaux
Chief Operations Officer
AGrant or award
Common Stock
+1,000$0.00$010,816Jun 12, 2026
Jun 10, 2026Jacques L.J. Bourque
CHIEF FINANCIAL OFFICER
AGrant or award
Common Stock
+1,000$0.00$04,597Jun 12, 2026
Jun 10, 2026Don P Ledet
CHIEF RISK OFFICER
AGrant or award
Common Stock
+1,000$0.00$012,837Jun 12, 2026
Jun 10, 2026Amanda B. Quebedeaux
Chief Operations Officer
AGrant or award
Stock Option (Right to Buy)derivative
+2,000$0.00$02,000Jun 12, 2026
Jun 10, 2026Don P Ledet
CHIEF RISK OFFICER
AGrant or award
Stock Option (Right to Buy)derivative
+2,000$0.00$02,000Jun 12, 2026
Jun 10, 2026Jacques L.J. Bourque
CHIEF FINANCIAL OFFICER
AGrant or award
Stock Option (Right to Buy)derivative
+2,000$0.00$02,000Jun 12, 2026
Jun 10, 2026Ted D. Bellard
director, other
AGrant or award
Common Stock
+1,058$0.00$035,402Jun 11, 2026
Jun 10, 2026Kirk E. Kleiser
director
SOpen-market sale
Common Stockindirect: By K Kleiser LLC
-5,000$16.04$80k0Jun 11, 2026
Jun 10, 2026Craig C. LeBouef
director
AGrant or award
Common Stock
+1,058$0.00$025,580Jun 11, 2026
Jun 10, 2026Frederick R. Lafleur
director
AGrant or award
Common Stock
+1,058$0.00$010,580Jun 11, 2026
Jun 10, 2026Joseph B Zanco
PRESIDENT AND CEO
AGrant or award
Common Stock
+5,290$0.00$038,160Jun 11, 2026
Jun 10, 2026Todd A. Kidder
director, other
AGrant or award
Common Stock
+1,058$0.00$020,580Jun 11, 2026
Jun 10, 2026Matthew L. Scruggins
director
AGrant or award
Common Stock
+1,058$0.00$025,912Jun 11, 2026
Jun 10, 2026Kirk E. Kleiser
director
SOpen-market sale
Common Stockindirect: By K & G On the Geaux LLC
-1,000$16.04$16k0Jun 11, 2026
Jun 10, 2026Kirk E. Kleiser
director
AGrant or award
Common Stock
+1,058$0.00$025,580Jun 11, 2026
Jun 10, 2026Kirk E. Kleiser
director
POpen-market purchase
Common Stock
+2,850$16.13$46k28,430Jun 11, 2026
Jun 10, 2026Matthew L. Scruggins
director
AGrant or award
Stock Option (Right to Buy)derivative
+2,645$0.00$02,645Jun 11, 2026
Jun 10, 2026Ted D. Bellard
director, other
AGrant or award
Stock Option (Right to Buy)derivative
+2,645$0.00$02,645Jun 11, 2026
Jun 10, 2026Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By IRA
+2,350$16.09$38k20,099Jun 11, 2026
Jun 10, 2026Craig C. LeBouef
director
AGrant or award
Stock Option (Right to Buy)derivative
+2,645$0.00$02,645Jun 11, 2026
Jun 10, 2026Todd A. Kidder
director, other
AGrant or award
Stock Option (Right to Buy)derivative
+2,645$0.00$02,645Jun 11, 2026
Jun 10, 2026Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By Spouse in IRA
+1,000$16.11$16k4,100Jun 11, 2026
Jun 10, 2026Frederick R. Lafleur
director
AGrant or award
Stock Option (Right to Buy)derivative
+2,645$0.00$02,645Jun 11, 2026
Jun 10, 2026Joseph B Zanco
PRESIDENT AND CEO
AGrant or award
Stock Option (Right to Buy)derivative
+13,225$0.00$013,225Jun 11, 2026
Dec 18, 2025Matthew L. Scruggins
director
GGift
Common Stock
+332$0.00$024,854Dec 22, 2025
Oct 28, 2025Kirk E. Kleiser
director
SOpen-market sale
Common Stockindirect: By Kleiser Enterprises Corporation
-1,500$13.43$20k3,250Oct 30, 2025
Oct 28, 2025Kirk E. Kleiser
director
SOpen-market sale
Common Stockindirect: By Kleiser Enterprises Corporation
-2,500$13.39$33k750Oct 30, 2025
Oct 28, 2025Kirk E. Kleiser
director
SOpen-market sale
Common Stockindirect: By Kleiser Enterprises Corporation
-750$13.40$10k0Oct 30, 2025
Oct 28, 2025Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By IRA
+100$13.40$1,34013,099Oct 30, 2025
Oct 28, 2025Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By IRA
+4,650$13.41$62k17,749Oct 30, 2025
Sep 1, 2025Jacques L.J. Bourque
CHIEF FINANCIAL OFFICER
FTax withholding
Common Stock
-131$12.83$1,6813,597Sep 2, 2025
Sep 1, 2025Joseph B Zanco
PRESIDENT AND CEO
FTax withholding
Common Stock
-1,158$12.83$15k32,870Sep 2, 2025
Sep 1, 2025Amanda B. Quebedeaux
Chief Operations Officer
FTax withholding
Common Stock
-553$12.83$7,0959,263Sep 2, 2025
Jun 11, 2025Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By IRA
+200$12.25$2,45012,999Jun 13, 2025
Jun 11, 2025Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By Kleiser Enterprises Corporation
+350$12.29$4,3024,750Jun 13, 2025
Jun 11, 2025Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By Spouse in IRA
+300$12.24$3,6713,100Jun 13, 2025
Jun 11, 2025Kirk E. Kleiser
director
POpen-market purchase
Common Stockindirect: By Spouse
+900$12.30$11k900Jun 13, 2025
Jun 10, 2025Ted D. Bellard
director, other
AGrant or award
Common Stock
+1,058$0.00$034,344Jun 12, 2025
Jun 10, 2025Amanda B. Quebedeaux
Chief Operations Officer
AGrant or award
Common Stock
+2,000$0.00$09,816Jun 12, 2025
Jun 10, 2025Joseph B Zanco
PRESIDENT AND CEO
AGrant or award
Common Stock
+5,290$0.00$034,028Jun 12, 2025
Jun 10, 2025Jacques L.J. Bourque
CHIEF FINANCIAL OFFICER
AGrant or award
Common Stock
+2,000$0.00$03,728Jun 12, 2025
50 of 70 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about CLST

Answered from the filings on this page, as of the latest one.

Are insiders buying CLST?

No. In the last 90 days no insider at Catalyst Bancorp, Inc. bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.

Who was the last insider to trade CLST on the open market?

Kirk E. Kleiser (director) bought $100k of CLST on Jun 10, 2026 and filed the Form 4 on Jun 11, 2026. InsiderTell scored 31 (weak).

How many insiders file Form 4 at Catalyst Bancorp, Inc.?

10 people have filed a Form 4 at Catalyst Bancorp, Inc., among them Ted D. Bellard (director), Jacques L.J. Bourque (CHIEF FINANCIAL OFFICER), Todd A. Kidder (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.