Key facts
- This page summarizes Kirk E. Kleiser's Form 4 filing for Catalyst Bancorp, Inc. (CLST).
- 4 reported transactions and 3 derivative rows are listed below.
- Accepted by SEC: 18 Sep 2026, 16:32.
Kirk E. Kleiser - 16 Sep 2026 Form 4 Insider Report for Catalyst Bancorp, Inc. (CLST)
- Reporting relationship
- Director
- Issuer ticker
- CLST
- Reported as of
- 16 Sep 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 18 Sep 2026, 16:32:07 UTC
- Prior SEC filing
- 11 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Jutta Codori by P.O.A. for Kirk E. Kleiser
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Kirk E. Kleiser filed Form 4 for Catalyst Bancorp, Inc. (CLST) on 18 Sep 2026.
Change
- Previous filing in this sequence was filed on 11 Jun 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001885818
Primary reporting owner
Kleiser Kirk E.
- Relationship
- Director
- Address
- C/O CATALYST BANCORP INC, 235 N COURT ST, OPELOUSAS
- Signature
- /s/ Jutta Codori by P.O.A. for Kirk E. Kleiser
- Signature date
- 18 Sep 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CLST
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +529
- Change %
- +1.2%
- Price
- $12.08*
- Shares after
- 45,887
- Date
- 16 Sep 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F3, F4
CLST
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +16,928
- Change %
- +60%
- Price
- $13.30*
- Shares after
- 45,358
- Date
- 16 Sep 2026
- Ownership
- Direct
- Footnotes
- F5
CLST
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 20,099
- Date
- 16 Sep 2026
- Ownership
- By IRA
CLST
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 4,100
- Date
- 16 Sep 2026
- Ownership
- By Spouse in IRA
CLST
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 900
- Date
- 16 Sep 2026
- Ownership
- By Spouse
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CLST
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -16,928
- Change %
- -80%
- Price
- $0.000000*
- Shares after
- 4,232
- Date
- 16 Sep 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 16,928
- Exercise price
- $13.30
- Footnotes
- F5
CLST
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -529
- Change %
- -20%
- Price
- $0.000000*
- Shares after
- 2,116
- Date
- 16 Sep 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 529
- Exercise price
- $12.08
- Footnotes
- F1
CLST
holding
Derivative
Stock Option (Right to Buy)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,645
- Date
- 16 Sep 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 2,645
- Exercise price
- $15.96
- Footnotes
- F6
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 6 footnotes
Footnote F1
The options are vesting at a rate of 20% per year commenced on June 10, 2026. As of the date of this filing 529 options were exercised.
Footnote F2
Includes 1,058 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that vest at 20% per year commencing on June 10, 2027.
Footnote F3
Includes 847 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 1,058 shares that commenced vesting 20% per year on June 10, 2026.
Footnote F4
Includes 1,696 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.
Footnote F5
The options are vesting at a rate of 20% per year commenced on September 1, 2023. As of the date of this filing 16,928 options were exercised.
Footnote F6
The options vest at a rate of 20% per year commencing on June 10, 2027.