Catalyst Bancorp, Inc.
Catalyst Bancorp, Inc. (CLST) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CLST · as of Sep 30, 2025
Ownership Breakdown
19
Institutional Holders
$10.16M
Total Inst. Value
▲ $442,747 vs Q2
4.05M
Shares Outstanding
freeFloat 83.04%
771,452
13F Shares Held
▼ 12,463 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CLST largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC savings institution, federally chartered | 219.8K | 5.90% | 5.90% | $2.89B | Nov 7, 2025 | ▼ 4.1K |
GRAHAM CAPITAL WEALTH MANAGEMENT, LLC savings institution, federally chartered | 196.3K | 5.27% | 5.27% | $2.58B | Nov 7, 2025 | ▼ 2.7K |
STILWELL VALUE LLC savings institution, federally chartered | 117.5K | 3.16% | 3.16% | $1.55B | Nov 14, 2025 | ▲ 39.6K |
BLACKROCK, INC. savings institution, federally chartered | 65.3K | 1.75% | 1.75% | $859.21M | Nov 12, 2025 | ▲ 260 |
GEODE CAPITAL MANAGEMENT, LLC savings institution, federally chartered | 35.7K | 95.85% | 95.85% | $469.43M | Nov 12, 2025 | ▼ 4.0K |
MONTZ HARCUS WEALTH MANAGEMENT LLC savings institution, federally chartered | 30.0K | 80.58% | 80.58% | $394.50M | Oct 20, 2025 | — held |
RENAISSANCE TECHNOLOGIES LLC savings institution, federally chartered | 22.8K | 61.24% | 61.24% | $300.96M | Nov 13, 2025 | ▲ 600 |
NEWEDGE ADVISORS, LLC savings institution, federally chartered | 21.5K | 57.75% | 57.75% | $282.73M | Nov 17, 2025 | — held |
SUMMIT FINANCIAL WEALTH ADVISORS, LLC savings institution, federally chartered | 18.2K | 48.89% | 48.89% | $242.06M | Oct 3, 2025 | — held |
WITTENBERG INVESTMENT MANAGEMENT, INC. savings institution, federally chartered | 13.7K | 36.72% | 36.72% | $179.75M | Nov 13, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
3
Increased
+40.5K shares1
New Positions
first time holders7
Decreased
−17.9K shares1
Sold Out
fully exitedNet shares change (top 50)
+22.5K
+40.5K / −17.9K
Net new holders
-4
1 new / 1 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CLST insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
2
Buy transactions
3
Sell transactions
0.67
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Scruggins Matthew L. director | Dec 18, 2025 | Gift | 332 | — | — | 24.9K | Form 4 ↗ |
Kleiser Kirk E. director | Oct 28, 2025 | Purchase | 4,650 | $13.41 | $62.4K | 17.7K | Form 4 ↗ |
Kleiser Kirk E. director | Oct 28, 2025 | Purchase | 100 | $13.40 | $1.3K | 13.1K | Form 4 ↗ |
Kleiser Kirk E. director | Oct 28, 2025 | Sale | 1,500 | $13.43 | $20.1K | 3.3K | Form 4 ↗ |
Kleiser Kirk E. director | Oct 28, 2025 | Sale | 2,500 | $13.39 | $33.5K | 750 | Form 4 ↗ |
Kleiser Kirk E. director | Oct 28, 2025 | Sale | 750 | $13.40 | $10.0K | 0 | Form 4 ↗ |
Quebedeaux Amanda B. Chief Operations Officer | Sep 1, 2025 | Tax Withhold | 553 | $12.83 | $7.1K | 9.3K | Form 4 ↗ |
Bourque Jacques L.J. CHIEF FINANCIAL OFFICER | Sep 1, 2025 | Tax Withhold | 131 | $12.83 | $1.7K | 3.6K | Form 4 ↗ |
Zanco Joseph B PRESIDENT AND CEO | Sep 1, 2025 | Tax Withhold | 1,158 | $12.83 | $14.9K | 32.9K | Form 4 ↗ |
Kleiser Kirk E. director | Jun 11, 2025 | Purchase | 200 | $12.25 | $2.4K | 13.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Catalyst Bancorp, Inc. (CLST) is primarily owned by institutional investors, who hold approximately 19.0% of total shares outstanding. Company insiders own approximately 16.96%, while retail and public investors account for the remaining 64.01%.
The largest institutional shareholder of Catalyst Bancorp, Inc. is VANGUARD GROUP INC, holding approximately 219,839 shares — equal to 5.90% of outstanding shares — as of September 30, 2025.
A total of 19 institutional investors currently hold CLST stock, with a combined institutional value of approximately $10,155,605 as of the most recent 13F filing period.
Frequently asked questions
CLST ownershipCatalyst Bancorp, Inc. (CLST) is primarily owned by institutional investors, who hold approximately 19.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 5.90% stake. Company insiders hold 16.96%. Data sourced from SEC Form 13F as of September 30, 2025.