NasdaqFinancialsSavings Institution, Federally CharteredOPELOUSAS, LA

Catalyst Bancorp, Inc. CLST

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Estimated market cap $70.87M4.03M shares, shares as of Aug 12, 2026CIK 1849867

Insider trades, 12 mo

5 buys · 2 sells

$96.2K sold, open market

Congress trades, 24 mo

—

No disclosed trades

13F holders, Q3 2026

14.4% of shares · 1 added

13F holders

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Lobbying, 12 mo

—

No lobbying filings

Federal contracts, 12 mo

—

None matched

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IPO prospectus

Updated

Catalyst Bancorp, Inc.’s initial public offering: where it stands and what the registration statement says.

Updated · Proposed ticker CLST, Nasdaq Capital Market · First filed Mar 12, 2021

Read from the S-1/A filed Jul 30, 2021 · Read it on sec.gov ↗

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AI summary of the prospectus. Written by AI from the parts of the prospectus listed in the filing, and checked against its text. This is information, not investment advice.

All filings of this IPO Read the S-1/A on sec.gov ↗

IPO prospectus

Catalyst Bancorp, Inc.’s initial public offering: where it stands and what the registration statement says.

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Latest 10-Q

Q2 2026

What changed in Catalyst Bancorp, Inc.'s latest quarterly report, compared with the one before.

Filed Aug 14, 2026 · Quarter ended Jun 30, 2026

Compared with the 10-Q for the quarter ended Mar 31, 2026. Sections compared: management's discussion, risk factors, legal proceedings and controls and procedures.

Read the 10-Q on sec.gov ↗Filing index ↗

Latest 10-Q

What changed in Catalyst Bancorp, Inc.'s latest quarterly report, compared with the one before.

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Insider trades

7 in 12 mo

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.

Recent insider trades

Kirk E. Kleiser Director	Nov 4 Form 4 ↗	Buy	+$17.6K 990 sh @ $17.76	-0.1%
Kirk E. Kleiser Director	Nov 4 Form 4 ↗	Buy	+$12.7K 714 sh @ $17.76	-0.1%
Kirk E. Kleiser Director	Jun 10 Form 4 ↗	Buy	+$16.1K 1,000 sh @ $16.11	+5.7%
Kirk E. Kleiser Director	Jun 10 Form 4 ↗	Buy	+$37.8K 2,350 sh @ $16.09	+5.7%
Kirk E. Kleiser Director	Jun 10 Form 4 ↗	Buy	+$46.0K 2,850 sh @ $16.13	+5.7%

All CLST insider trades →Planned sales (Form 144): see notices

Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.

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13F holders

579,994 shares

15 funds report CLST. Values checked against market prices.

Funds own 31% of shares (Q2 2026)

23 funds hold the stock.

Q3 2026: 14% · 5,560 of ~8,900 funds reported so far

Q2 202519%
Q3 202519%
Q4 202528%
Q1 202625%
Q2 202631%
Q3 2026 (so far)14%

Q3 2026. 2 new, 1 added to, 4 trimmed, 10 exited since Q2 2026.

Top 13F holders
#
1	Graham Capital Wealth Management, LLC 13F ↗	194,527	$3.4M	-0.7%
2	Vanguard Capital Management LLC 13F ↗	189,486	$3.3M	unchanged
3	BlackRock, Inc. 13F ↗	68,244	$1.2M	-0.8%
4	Geode Capital Management, LLC 13F ↗	34,270	$604.1K	-0.9%
5	Kestra Advisory Services, LLC 13F ↗	25,000	$440.5K	unchanged
6	Renaissance Technologies LLC 13F ↗	23,100	$407.0K	unchanged
7	Vanguard Fiduciary Trust Co 13F ↗	21,967	$387.1K	-9.8%
8	NewEdge Advisors, LLC 13F ↗	11,500	$202.6K	unchanged
9	State Street Corp 13F ↗	10,465	$184.4K	New
10	Vanguard Global Advisers, LLC 13F ↗	1,140	$20.1K	unchanged

Download CSV Every fund that holds CLST, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.

13F holders

Funds that report this stock, checked against market prices.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.

No recent congressional trades for this company.

Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.

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Lobbying

What Catalyst Bancorp, Inc. and its lobbying firms report each quarter.

No recent lobbying filings for this company.

Lobbying

What Catalyst Bancorp, Inc. and its lobbying firms report each quarter.

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Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

Funds holding the stock

Shares they report

Funds holding the stock by quarter

Q4 2021	13	—	712,499	$9.7M
Q1 2022	15	+2	754,108	$10.3M
Q2 2022	13	-2	748,928	$10.1M
Q3 2022	15	+2	770,216	$9.6M
Q4 2022	17	+2	783,554	$10.0M
Q1 2023	15	-2	846,127	$9.7M
Q2 2023	15	0	858,127	$9.5M
Q3 2023	16	+1	863,332	$10.4M
Q4 2023	18	+2	871,551	$9.5M
Q1 2024	20	+2	957,340	$11.3M
Q2 2024	18	-2	898,034	$10.4M
Q3 2024	18	0	927,304	$10.6M
Q4 2024	23	+5	1.15M	$12.2M
Q1 2025	20	-3	762,962	$8.9M
Q2 2025	19	-1	783,915	$9.7M
Q3 2025	19	0	771,452	$10.2M
Q4 2025	19	0	1.15M	$18.2M
Q1 2026	23	+4	1.00M	$16.6M
Q2 2026	23	0	1.24M	$22.1M
Q3 2026	15	-8	579,994	$10.2M

Each point is a quarter-end, from Q4 2021 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.

Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.

The history follows the company's current CUSIP number (14888L101). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q4 2021) can be later than the stock's first appearance in 13F reports.

Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.

A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.

Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

Ownership stakes6 in 12 mo 8-K events4 in 90 days PatentsNone on record Short interestFINRA · updated Oct 15 Planned insider salesForm 144 · 1 in 12 mo Executive payNone on record Wikipedia attentionNone on record SEC enforcementNone on record IPO history1 registration Ownership stakes…8-K events…Patents…Short interest…Planned insider sales…Executive pay…Wikipedia attention…SEC enforcement…

About the company

The basics from the company’s SEC registration.

Legal name: Catalyst Bancorp, Inc.
Address: 235 N. COURT STREET, OPELOUSAS, LA 70570
Phone: 337-948-3033
Filer category: emerging growth company
Listed as: CLST (Nasdaq)
SEC filings: All filings on SEC EDGAR ↗

About the company

The basics from the company’s SEC registration.

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$17.57$0.00 (0.00%) Nov 13 close

1M3M1Y

Oct 13, 2026Low $16.75 · High $17.90Nov 13, 2026

Aug 13, 2026Low $16.30 · High $18.15Nov 13, 2026

Nov 13, 2025Low $14.60 · High $18.15Nov 13, 2026

Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

Live chart

Intraday and historical prices from TradingView. Quotes may be delayed.

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Information, not investment advice. Company matching is automatic; check the source before relying on one row.