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Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell.
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Sep 16, 2026
Reporting period
Not applicable
Filed with the SEC
Sep 18, 2026
DirectorOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001885818-26-000004
Filed / recorded
Sep 18, 2026, 8:32 PM UTC
Added to OQRO
Oct 8, 2026, 2:41 AM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Catalyst Bancorp, Inc.
Issuer CIK
1849867
Ticker
CLST
Reporting person
Kirk E. Kleiser
Relationship
Director
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Sep 16, 2026
Transaction code
M
Shares / units
529
Price per share
$12.08
Acquired / disposed
Acquired (A)
Shares owned after
45,887
Ownership form
Direct
Amendment
No
Footnotes from the filing
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.
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.
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.
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.
Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.