XOOMAR

Catalyst Bancorp (CLST)

Catalyst Bancorp on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as savings institution, federally chartered.

Download CSV

6K

Short interest

settlement 2026-09-30

2.6

Days to cover

+0.3 days vs prior

90.0%

Short share of volume

2026-10-23

1

Fails to deliver

settlement 2026-09-09

Thu 28 Jan

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-10-23.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in CLST is 5,965 shares, down 1,187 shares over the last month. Over the last 48 readings it ranged from 4,082 shares (28 February 2025) to 10,975 shares (15 May 2025). At the reported average volume of 2K shares a day that is 2.6 days to cover.

Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/clst" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
PreviewDark previewAdd ?theme=dark to the src for a dark chart.
SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-305,965-21.1%2,2492.65
2026-09-157,560+5.7%3,1902.37
2026-08-317,152-4.6%3,5242.03
2026-08-147,498+4.2%2,1353.51
2026-07-317,197-8.1%2,1043.42
2026-07-157,832-4.0%2,7262.87
2026-06-308,163+10.8%2,0024.08
2026-06-157,367+4.3%3,0502.42
2026-05-297,064-3.2%4,1101.72
2026-05-157,296-0.9%7,8571.00
2026-04-307,359-11.8%2,6122.82
2026-04-158,345+19.0%17,2681.00
2026-03-317,011-1.1%3,7791.86
2026-03-137,089-6.1%6,0021.18
2026-02-277,552+7.2%3,1452.40
2026-02-137,044+17.6%5,0981.38
2026-01-305,991+1.4%5,6801.05
2026-01-155,906+10.7%3,5211.68
2025-12-315,334-30.6%4,4941.19
2025-12-157,683-27.9%3,5912.14
2025-11-2810,662+73.6%7,3721.45
2025-11-146,141-31.7%7,7691.00
2025-10-318,992+88.3%10,9171.00
2025-10-154,776+6.8%4,0271.19
2025-09-304,471-49.2%3,9501.13
2025-09-158,798+89.9%3,4072.58
2025-08-294,633-13.4%1,7882.59
2025-08-155,353-23.9%2,8791.86
2025-07-317,030+28.3%1,6704.21
2025-07-155,478+24.6%19,9711.00
2025-06-304,395-54.6%10,6761.00
2025-06-139,689-2.8%6,5861.47
2025-05-309,969-9.2%5,4771.82
2025-05-1510,975+1.9%5,5161.99
2025-04-3010,767+36.8%5,9031.82
2025-04-157,872+30.2%6,0331.30
2025-03-316,047+6.1%3,3621.80
2025-03-145,698+39.6%4,8741.17
2025-02-284,082-31.2%6,4541.00
2025-02-145,936-4.7%3,7951.56
2025-01-316,226-33.9%6,0841.02
2025-01-159,420-13.1%3,0763.06
2024-12-3110,841+49.5%15,4511.00
2024-12-137,250+18.4%10,2811.00
2024-11-296,123-11.0%6,3301.00
2024-11-156,881+10.8%6,6051.04
2024-10-316,212+5.4%6,6061.00
2024-10-155,895-36.5%5,0711.16

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 23 October 2026, the short share of CLST volume is 90.0%, up 87.9 points over the last five sessions. Over the last 30 readings it ranged from 0.9% (30 September 2026) to 99.2% (29 September 2026). The latest reading sits at the top of that range. The latest reading is 51.0 points above the 30-session average of 39.0%, on 40 shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-23364090.0%0
2026-10-22606493.8%0
2026-10-21121770.6%0
2026-10-202K3K59.5%0
2026-10-19238527.1%0
2026-10-16422K2.1%0
2026-10-1571163.6%0
2026-10-14152075.0%0
2026-10-1327380633.9%0
2026-10-1251050.0%0
2026-10-098533K25.4%0
2026-10-086323227.2%0
2026-10-0777241.0%0
2026-10-061K2K63.1%0
2026-10-058122835.5%0
2026-10-0218744542.0%0
2026-10-012K5K49.9%0
2026-09-30131K0.9%0
2026-09-2976276899.2%0
2026-09-2816216797.0%0
2026-09-253933.3%0
2026-09-2412875716.9%0
2026-09-2354231.2%0
2026-09-22141K1.1%0
2026-09-214032K20.6%0
2026-09-18118201.3%0
2026-09-172041K20.2%0
2026-09-161482K9.8%0
2026-09-158069311.5%0
2026-09-1410922548.4%0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 9 September 2026, the fails-to-deliver balance in CLST is 1 share, down 353 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (7 January 2025) to 1,720 shares (17 July 2024). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-09-091$18.12$18
2026-08-27354$17.40$6K
2026-08-257$17.39$122
2026-08-1967$17.64$1K
2026-08-1878$17.61$1K
2026-08-0643$17.00$731
2026-08-0543$16.76$721
2026-06-104$16.01$64
2026-01-2918$15.70$283
2025-11-0710$14.01$140
2025-06-109$12.10$109
2025-06-0954$11.88$642
2025-06-0370$11.98$839
2025-04-257$11.48$80
2025-01-071$11.72$12
2024-07-181,014$11.80$12K
2024-07-171,720$11.90$20K
2024-06-18168$11.60$2K
2024-02-0278$11.98$934
2023-12-043$11.30$34
2023-09-135$11.53$58
2023-09-0649$12.00$588
2023-08-10292$11.63$3K
2023-08-0440$12.08$483
2023-08-03240$12.20$3K
2023-07-31373$12.70$5K
2023-07-28186$12.55$2K
2023-07-179$11.91$107
2023-07-056$11.32$68
2023-07-031,418$11.03$16K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for CLST in the last 90 days. The most recent filings are listed below. Latest filing: Kleiser Kirk E. (Director) on 2026-09-16.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-16Kleiser Kirk E.DirectorExercise or conversion17K$13.30$225K45K
2026-09-16Kleiser Kirk E.DirectorExercise or conversion529$12.08$6K46K
2026-09-01Quebedeaux Amanda B.Chief Operations OfficerTax withholding553$17.81$10K10K
2026-09-01Zanco Joseph BPRESIDENT AND CEOTax withholding1K$17.81$21K37K
2026-09-01Bourque Jacques L.J.CHIEF FINANCIAL OFFICERTax withholding131$17.81$2K4K
2026-06-10Quebedeaux Amanda B.Chief Operations OfficerGrant1K$0.00$011K
2026-06-10Bourque Jacques L.J.CHIEF FINANCIAL OFFICERTax withholding131$15.96$2K4K
2026-06-10Bourque Jacques L.J.CHIEF FINANCIAL OFFICERGrant1K$0.00$05K
2026-06-10Ledet Don PCHIEF RISK OFFICERGrant1K$0.00$013K
2026-06-10Ledet Don PCHIEF RISK OFFICERTax withholding131$15.96$2K13K
2026-06-10Quebedeaux Amanda B.Chief Operations OfficerGrant1K$0.00$010K
2026-06-10Quebedeaux Amanda B.Chief Operations OfficerTax withholding131$15.96$2K10K
2026-06-10Kidder Todd A.Director, CHAIRMAN OF THE BOARDGrant1K$0.00$021K
2026-06-10Lafleur Frederick R.DirectorGrant1K$0.00$011K
2026-06-10LeBouef Craig C.DirectorGrant1K$0.00$026K
2026-06-10Kleiser Kirk E.DirectorBuy1K$16.11$16K4K
2026-06-10Kleiser Kirk E.DirectorBuy2K$16.09$38K20K
2026-06-10Kleiser Kirk E.DirectorBuy3K$16.13$46K28K
2026-06-10Kleiser Kirk E.DirectorGrant1K$0.00$026K
2026-06-10Kleiser Kirk E.DirectorSell1K$16.04$16K0
2026-06-10Kleiser Kirk E.DirectorSell5K$16.04$80K0
2026-06-10Scruggins Matthew L.DirectorGrant1K$0.00$026K
2026-06-10Zanco Joseph BPRESIDENT AND CEOGrant5K$0.00$038K
2026-06-10Bellard Ted D.Director, SECRETARYGrant1K$0.00$035K
2025-12-18Scruggins Matthew L.DirectorGift332$0.00$025K
2025-10-28Kleiser Kirk E.DirectorBuy5K$13.41$62K18K
2025-10-28Kleiser Kirk E.DirectorBuy100$13.40$1K13K
2025-10-28Kleiser Kirk E.DirectorSell750$13.40$10K0
2025-10-28Kleiser Kirk E.DirectorSell3K$13.39$33K750
2025-10-28Kleiser Kirk E.DirectorSell2K$13.43$20K3K
2025-09-01Quebedeaux Amanda B.Chief Operations OfficerTax withholding553$12.83$7K9K
2025-09-01Zanco Joseph BPRESIDENT AND CEOTax withholding1K$12.83$15K33K
2025-09-01Bourque Jacques L.J.CHIEF FINANCIAL OFFICERTax withholding131$12.83$2K4K
2025-06-11Kleiser Kirk E.DirectorBuy900$12.30$11K900
2025-06-11Kleiser Kirk E.DirectorBuy300$12.23$4K3K
2025-06-11Kleiser Kirk E.DirectorBuy350$12.29$4K5K
2025-06-11Kleiser Kirk E.DirectorBuy200$12.25$2K13K
2025-06-10Ledet Don PCHIEF RISK OFFICERGrant2K$0.00$012K
2025-06-10Scruggins Matthew L.DirectorGrant1K$0.00$025K
2025-06-10Kleiser Kirk E.DirectorGrant1K$0.00$025K
2025-06-10LeBouef Craig C.DirectorGrant1K$0.00$025K
2025-06-10Lafleur Frederick R.DirectorGrant1K$0.00$010K
2025-06-10Kidder Todd A.Director, CHAIRMAN OF THE BOARDGrant1K$0.00$020K
2025-06-10Quebedeaux Amanda B.Chief Operations OfficerGrant2K$0.00$010K
2025-06-10Zanco Joseph BPRESIDENT AND CEOGrant5K$0.00$034K
2025-06-10Bourque Jacques L.J.CHIEF FINANCIAL OFFICERGrant2K$0.00$04K
2025-06-10Bellard Ted D.Director, SECRETARYGrant1K$0.00$034K
2024-12-03Zanco Joseph BPRESIDENT AND CEOBuy6K$11.87$74K22K
2024-12-02Zanco Joseph BPRESIDENT AND CEOBuy8K$11.79$98K16K
2024-12-01Ledet Don PCHIEF RISK OFFICERTax withholding574$11.85$7K10K
2024-11-22Kleiser Kirk E.DirectorBuy2K$11.64$22K4K
2024-09-01Quebedeaux Amanda B.Chief Operations OfficerTax withholding574$11.67$7K8K
2024-09-01Bourque Jacques L.J.CHIEF FINANCIAL OFFICERTax withholding136$11.67$2K2K
2024-09-01Zanco Joseph BPRESIDENT AND CEOTax withholding1K$11.67$14K29K
2023-12-01Ledet Don PCHIEF RISK OFFICERGrant8K$0.00$08K
2023-11-01Kleiser Kirk E.DirectorBuy2K$11.21$19K13K
2023-09-01Zanco Joseph BPRESIDENT AND CEOTax withholding1K$12.05$15K30K
2023-09-01Quebedeaux Amanda B.DIRECTOR OF OPERATIONSTax withholding574$12.05$7K8K
2023-09-01Bourque Jacques L.J.CHIEF FINANCIAL OFFICERTax withholding136$12.05$2K2K
2023-05-19Bellard Ted D.Director,OtherBuy4$10.33$4133K
2023-05-18Bellard Ted D.Director,OtherBuy2K$10.01$24K32K
2023-05-18Bellard Ted D.Director,OtherBuy2K$10.49$17K33K
2023-05-16Bellard Ted D.Director,OtherBuy3K$9.98$27K26K
2023-05-16Bellard Ted D.Director,OtherBuy3K$9.84$30K29K
2023-05-12Zanco Joseph BPRESIDENT AND CEOBuy125$9.75$1K7K
2023-05-11Zanco Joseph BPRESIDENT AND CEOBuy100$9.46$9465K
2023-05-11Zanco Joseph BPRESIDENT AND CEOBuy901$9.50$9K7K
2023-05-11Zanco Joseph BPRESIDENT AND CEOBuy1K$9.49$11K6K
2023-05-11Zanco Joseph BPRESIDENT AND CEOBuy100$9.43$9435K
2023-05-08Kleiser Kirk E.DirectorBuy4K$9.63$35K11K
2023-05-08Kleiser Kirk E.DirectorBuy2K$9.64$15K3K
2023-05-04Zanco Joseph BPRESIDENT AND CEOBuy5K$9.60$48K5K
2023-05-01Kleiser Kirk E.DirectorBuy6K$10.95$60K31K
2023-05-01Kleiser Kirk E.DirectorBuy6K$10.95$60K8K
2022-09-07Bourque Jacques L.J.CHIEF FINANCIAL OFFICERBuy100$13.46$1K100
2022-09-06Bourque Jacques L.J.CHIEF FINANCIAL OFFICERBuy100$13.46$1K100
2022-09-01Kleiser Kirk E.DirectorGrant8K$0.00$023K
2022-09-01Bellard Ted D.DirectorOtherGrant8K$0.00$023K
2022-09-01Kidder Todd A.DirectorOtherGrant8K$0.00$018K
2022-09-01Kleiser Kirk E.DirectorGrant8K$0.00$025K
2022-09-01Lafleur Frederick R.DirectorGrant8K$0.00$08K
2022-09-01LeBouef Craig C.DirectorGrant8K$0.00$023K
2022-09-01Perry Simone S.CHIEF CREDIT OFFICERGrant8K$0.00$013K
2022-09-01Scruggins Matthew L.DirectorGrant8K$0.00$023K
2022-09-01Quebedeaux Amanda B.DIRECTOR OF OPERATIONSGrant8K$0.00$09K
2022-09-01Zanco Joseph BPRESIDENT AND CEOGrant21K$0.00$031K
2022-09-01Bourque Jacques L.J.CHIEF FINANCIAL OFFICERGrant2K$0.00$02K
2022-08-16Kleiser Kirk E.DirectorBuy1K$13.30$13K2K
2022-08-16Kleiser Kirk E.DirectorBuy1K$13.30$13K17K
2022-08-15Kleiser Kirk E.DirectorBuy100$13.21$1K100
2022-08-15Kleiser Kirk E.DirectorBuy900$13.21$12K1K
2022-08-15Kleiser Kirk E.DirectorBuy900$13.21$12K16K
2022-08-15Kleiser Kirk E.DirectorBuy1K$13.20$16K1K
2022-08-15Kleiser Kirk E.DirectorBuy100$13.21$1K15K
2021-10-12Kidder Todd A.DirectorBuy10K$10.00$100K10K
2021-10-12Bellard Ted D.DirectorOtherBuy10K$10.00$100K10K
2021-10-12Bellard Ted D.DirectorOtherBuy15K$10.00$150K15K
2021-10-12Codori JuttaChief Financial OfficerBuy15K$10.00$150K15K
2021-10-12Kidder Todd A.DirectorBuy10K$10.00$100K10K
2021-10-12Kleiser Kirk E.DirectorBuy3K$10.00$25K3K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Planned sales (Form 144)

Newest first. JSON

2 Form 144 notices on file for CLST worth $160K at the prices reported; 0 in the last 90 days worth $0. Latest: Kleiser Kirk E. filed on 2026-06-10 to sell 6,000 shares ($96K) from 2026-06-10.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-06-10Kleiser Kirk E.Director6K$96K0.148%2026-06-10Charles Schwab Corp.
2025-10-28Kleiser Kirk E.Director5K$64K0.115%2025-10-28Charles Schwab & Co

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

7 holders report 5% or more of CLST in their latest filing, 5 on Schedule 13D (active intent). The largest reported stake is Catalyst Bancorp, Inc. Employee Stock Ownership Plan at 10.2% of the class (416,792 shares), filed 2026-02-13 for an event on 2025-12-31.

FiledFormHolderSharesOf classEvent
2026-08-2713D/Ano. 3Stilwell Activist Fund, L.P.partnership364K9.0%2026-08-27
2026-08-2713D/Ano. 3Stilwell Activist Investments, L.P.partnership364K9.0%2026-08-27
2026-08-2713D/Ano. 3STILWELL PARTNERS L Ppartnership364K9.0%2026-08-27
2026-08-2713D/Ano. 3Stilwell Value LLCother entity364K9.0%2026-08-27
2026-08-2713D/Ano. 3STILWELL JOSEPHindividual364K9.0%2026-08-27
2026-08-2713D/Ano. 3ALCOTT MARK DAVIDindividual1K0.0%2026-08-27
2026-04-2913GVanguard Capital Managementinvestment adviser215K5.3%2026-03-31
2026-03-2613G/Ano. 1The Vanguard Groupinvestment adviser00.0%2026-03-13
2026-02-1313G/Ano. 5Catalyst Bancorp, Inc. Employee Stock Ownership Planemployee benefit plan417K10.2%2025-12-31

13F holders

Tracked managers holding CLST at their latest 13F. JSON

2 of the 30 tracked managers held CLST at their latest 13F, $622K in total at quarter-end prices. Renaissance Technologies is the largest at $381K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 1 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-3023K$381K0.00%-100
Citadel Advisors2026-06-3015K$241K0.00%+2K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Catalyst Bancorp in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Catalyst Bancorp (CLST), SEC CIK 1849867, listed on Nasdaq, classified by the SEC as savings institution, federally chartered. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-09.JSON and CSV
Planned sales
SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-06-10.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-27.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-07-30.JSON and CSV
Insider trades
SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-16.JSON and CSV
Company record
EDGAR filing index for CIK 1849867Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Datasets

Frequently Asked Questions

How much of CLST is sold short?
5,965 shares were held short at the 2026-09-30 settlement, 2.6 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is CLST's daily short volume?
On 2026-10-23, 36 of the 40 CLST shares reported to FINRA were sold short, 90.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does CLST have fails to deliver?
The SEC's latest file shows 1 CLST shares failed to deliver at settlement 2026-09-09. Fails are reported per settlement date and published twice a month with a lag.
Are CLST insiders buying or selling?
No open-market insider trades were reported for CLST in the last 90 days. The most recent filings are listed below. Latest filing: Kleiser Kirk E. (Director) on 2026-09-16.
Have CLST insiders filed to sell?
2 Form 144 notices on file for CLST worth $160K at the prices reported; 0 in the last 90 days worth $0. Latest: Kleiser Kirk E. filed on 2026-06-10 to sell 6,000 shares ($96K) from 2026-06-10.
Who owns 5% or more of CLST?
7 holders report 5% or more of CLST in their latest filing, 5 on Schedule 13D (active intent). The largest reported stake is Catalyst Bancorp, Inc. Employee Stock Ownership Plan at 10.2% of the class (416,792 shares), filed 2026-02-13 for an event on 2025-12-31.
Which tracked 13F managers own CLST?
2 of the 30 tracked 13F managers held CLST shares at their latest filing, $622K in all. The largest: Renaissance Technologies (23K shares, $381K), Ken Griffin's Citadel Advisors (15K shares, $241K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.