CoastalSouth Bancshares (COSO)
CoastalSouth Bancshares on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE.
160K
Short interest
settlement 2026-09-30
1.1
Days to cover
-0.7 days vs prior
45.9%
Short share of volume
2026-10-23
1
Fails to deliver
settlement 2026-09-02
Tue 19 Jan
Next earnings
estimated date
-$156K
Insider flow, 90 days
2 buys, 4 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in COSO is 159,659 shares, up 4,645 shares over the last month. Over the last 48 readings it ranged from 1 share (15 June 2023) to 229,473 shares (15 September 2026). At the reported average volume of 143K shares a day that is 1.1 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/coso" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 159,659 | -30.4% | 143,068 | 1.12 |
| 2026-09-15 | 229,473 | +48.0% | 125,566 | 1.83 |
| 2026-08-31 | 155,014 | +24.5% | 94,764 | 1.64 |
| 2026-08-14 | 124,540 | +4.9% | 88,725 | 1.40 |
| 2026-07-31 | 118,694 | +14.8% | 68,959 | 1.72 |
| 2026-07-15 | 103,347 | +43.2% | 107,828 | 1.00 |
| 2026-06-30 | 72,171 | -36.1% | 236,373 | 1.00 |
| 2026-06-15 | 112,928 | -29.9% | 102,848 | 1.10 |
| 2026-05-29 | 161,066 | -23.8% | 71,270 | 2.26 |
| 2026-05-15 | 211,389 | -5.6% | 84,738 | 2.49 |
| 2026-04-30 | 224,033 | +12.7% | 135,703 | 1.65 |
| 2026-04-15 | 198,864 | +3.1% | 85,609 | 2.32 |
| 2026-03-31 | 192,916 | +141.8% | 129,874 | 1.49 |
| 2026-03-13 | 79,795 | +59.1% | 67,215 | 1.19 |
| 2026-02-27 | 50,140 | -21.6% | 63,484 | 1.00 |
| 2026-02-13 | 63,953 | +5.8% | 96,429 | 1.00 |
| 2026-01-30 | 60,426 | -31.4% | 91,098 | 1.00 |
| 2026-01-15 | 88,146 | -37.9% | 72,593 | 1.21 |
| 2025-12-31 | 142,032 | +18.9% | 100,830 | 1.41 |
| 2025-12-15 | 119,406 | +18.4% | 47,871 | 2.49 |
| 2025-11-28 | 100,872 | -17.1% | 24,633 | 4.09 |
| 2025-11-14 | 121,627 | -3.3% | 18,708 | 6.50 |
| 2025-10-31 | 125,750 | -6.2% | 22,620 | 5.56 |
| 2025-10-15 | 134,042 | -41.0% | 26,692 | 5.02 |
| 2025-09-30 | 227,076 | +4256.8% | 109,928 | 2.07 |
| 2025-09-15 | 5,212 | +304.7% | 37,320 | 1.00 |
| 2025-08-29 | 1,288 | -63.6% | 15,766 | 1.00 |
| 2025-08-15 | 3,537 | -80.3% | 24,680 | 1.00 |
| 2025-07-31 | 17,942 | +162.2% | 18,710 | 1.00 |
| 2025-07-15 | 6,843 | +100.0% | 63,973 | 1.00 |
| 2025-05-15 | 173 | +100.0% | 732 | 1.00 |
| 2025-03-31 | 56 | +100.0% | 4,380 | 1.00 |
| 2024-12-13 | 3 | -94.2% | 2,761 | 1.00 |
| 2024-11-29 | 52 | +100.0% | 2,373 | 1.00 |
| 2024-08-15 | 1,449 | +100.0% | 2,180 | 1.00 |
| 2024-06-14 | 73 | +100.0% | 5,753 | 1.00 |
| 2024-04-30 | 399 | +100.0% | 3,796 | 1.00 |
| 2024-03-28 | 71 | -94.2% | 1,043 | 1.00 |
| 2024-03-15 | 1,219 | +100.0% | 719 | 1.70 |
| 2024-02-15 | 15 | +100.0% | 1,383 | 1.00 |
| 2023-11-15 | 17 | +100.0% | 267 | 1.00 |
| 2023-07-31 | 1 | +0.0% | 55 | 1.00 |
| 2023-07-14 | 1 | +0.0% | 403 | 1.00 |
| 2023-06-30 | 1 | +0.0% | 760 | 1.00 |
| 2023-06-15 | 1 | -99.8% | 659 | 1.00 |
| 2023-05-31 | 623 | -61.6% | 909 | 1.00 |
| 2023-05-15 | 1,623 | -17.7% | 93 | 17.45 |
| 2023-04-28 | 1,973 | -31.0% | 654 | 3.02 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of COSO volume is 45.9%, down 27.6 points over the last five sessions. Over the last 30 readings it ranged from 18.3% (2 October 2026) to 73.4% (16 October 2026). The latest reading is 2.9 points below the 30-session average of 48.8%, on 30K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 14K | 30K | 45.9% | 254 |
| 2026-10-22 | 20K | 33K | 61.7% | 0 |
| 2026-10-21 | 15K | 22K | 67.3% | 0 |
| 2026-10-20 | 15K | 26K | 56.7% | 0 |
| 2026-10-19 | 8K | 12K | 63.1% | 0 |
| 2026-10-16 | 9K | 12K | 73.4% | 0 |
| 2026-10-15 | 12K | 17K | 69.5% | 0 |
| 2026-10-14 | 8K | 21K | 39.8% | 0 |
| 2026-10-13 | 18K | 29K | 62.3% | 0 |
| 2026-10-12 | 9K | 13K | 65.7% | 0 |
| 2026-10-09 | 10K | 22K | 45.2% | 0 |
| 2026-10-08 | 13K | 18K | 69.7% | 0 |
| 2026-10-07 | 13K | 23K | 54.2% | 0 |
| 2026-10-06 | 19K | 31K | 61.2% | 0 |
| 2026-10-05 | 32K | 102K | 31.4% | 0 |
| 2026-10-02 | 21K | 116K | 18.3% | 0 |
| 2026-10-01 | 16K | 37K | 44.6% | 0 |
| 2026-09-30 | 12K | 27K | 45.1% | 0 |
| 2026-09-29 | 17K | 31K | 55.3% | 0 |
| 2026-09-28 | 11K | 44K | 25.9% | 2 |
| 2026-09-25 | 13K | 27K | 46.5% | 0 |
| 2026-09-24 | 20K | 45K | 45.4% | 0 |
| 2026-09-23 | 15K | 30K | 48.9% | 0 |
| 2026-09-22 | 23K | 35K | 65.0% | 0 |
| 2026-09-21 | 19K | 35K | 55.2% | 0 |
| 2026-09-18 | 18K | 52K | 35.7% | 0 |
| 2026-09-17 | 21K | 104K | 20.3% | 0 |
| 2026-09-16 | 14K | 28K | 52.1% | 0 |
| 2026-09-15 | 35K | 175K | 20.0% | 0 |
| 2026-09-14 | 8K | 42K | 18.8% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 2 September 2026, the fails-to-deliver balance in COSO is 1 share, down 2 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (20 May 2026) to 28,638 shares (15 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-02 | 1 | $27.19 | $27 |
| 2026-08-21 | 3 | $27.25 | $82 |
| 2026-08-20 | 4 | $27.02 | $108 |
| 2026-08-19 | 3 | $27.80 | $83 |
| 2026-08-18 | 4 | $27.83 | $111 |
| 2026-08-17 | 1 | $27.81 | $28 |
| 2026-08-14 | 16 | $28.01 | $448 |
| 2026-08-12 | 49 | $27.89 | $1K |
| 2026-07-15 | 4 | $26.49 | $106 |
| 2026-07-09 | 50 | $26.14 | $1K |
| 2026-06-30 | 65 | $26.82 | $2K |
| 2026-06-15 | 28,638 | $26.95 | $772K |
| 2026-06-01 | 100 | $25.53 | $3K |
| 2026-05-22 | 2 | $25.52 | $51 |
| 2026-05-21 | 1 | $25.50 | $26 |
| 2026-05-20 | 1 | $25.24 | $25 |
| 2026-05-19 | 2 | $25.33 | $51 |
| 2026-05-18 | 2 | $25.17 | $50 |
| 2026-05-15 | 2 | $25.44 | $51 |
| 2026-05-14 | 611 | $25.33 | $15K |
| 2026-05-13 | 6 | $25.50 | $153 |
| 2026-05-12 | 35 | $25.29 | $885 |
| 2026-05-07 | 3 | $25.82 | $77 |
| 2026-04-30 | 1,596 | $25.47 | $41K |
| 2026-04-29 | 900 | $25.66 | $23K |
| 2026-04-21 | 60 | $25.99 | $2K |
| 2026-04-16 | 1,000 | $25.53 | $26K |
| 2026-04-15 | 1,413 | $25.55 | $36K |
| 2026-04-13 | 81 | $25.60 | $2K |
| 2026-04-09 | 18 | $25.46 | $458 |
Insider trades
SEC Form 4, newest first. JSONOver the last 90 days COSO insiders reported 2 open-market buys ($9K) against 4 sells ($165K), so the dollar flow leans toward selling. Latest filing: Bruderer Ernst W. (Director) on 2026-08-31.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-31 | Bruderer Ernst W. | Director | Sell | 2K | $27.43 | $55K | 41K |
| 2026-08-26 | Bruderer Ernst W. | Director | Sell | 2K | $27.50 | $55K | 43K |
| 2026-08-18 | Bruderer Ernst W. | Director | Sell | 1K | $27.89 | $28K | 45K |
| 2026-08-12 | Bruderer Ernst W. | Director | Sell | 1K | $27.56 | $28K | 46K |
| 2026-08-07 | MACLEOD JAMES S | Director | Buy | 238 | $28.15 | $7K | 202K |
| 2026-08-06 | MACLEOD JAMES S | Director | Buy | 96 | $27.61 | $3K | 201K |
| 2026-05-06 | Valduga Anthony P. | CFO AND COO | Gift | 2K | $0.00 | $0 | 84K |
| 2026-05-06 | Valduga Anthony P. | CFO AND COO | Sell | 5K | $25.84 | $118K | 86K |
| 2026-04-27 | Stone Stephen R. | PRESIDENT AND CEO | Tax withholding | 5K | $25.59 | $129K | 132K |
| 2026-04-27 | Stone Stephen R. | PRESIDENT AND CEO | Exercise or conversion | 17K | $0.00 | $0 | 137K |
| 2026-04-27 | Hemby Lauren M. | CHIEF ACCOUNTING OFFICER | Tax withholding | 1K | $25.59 | $30K | 13K |
| 2026-04-27 | Hemby Lauren M. | CHIEF ACCOUNTING OFFICER | Exercise or conversion | 4K | $0.00 | $0 | 14K |
| 2026-04-27 | Valduga Anthony P. | CFO AND COO | Tax withholding | 4K | $25.59 | $98K | 91K |
| 2026-04-27 | Valduga Anthony P. | CFO AND COO | Exercise or conversion | 13K | $0.00 | $0 | 95K |
| 2026-04-27 | Turner Cameron Bradley | CHIEF CREDIT OFFICER | Tax withholding | 1K | $25.59 | $30K | 9K |
| 2026-04-27 | Turner Cameron Bradley | CHIEF CREDIT OFFICER | Exercise or conversion | 4K | $0.00 | $0 | 10K |
| 2026-03-09 | Stone Stephen R. | PRESIDENT AND CEO | Buy | 200 | $24.15 | $5K | 120K |
| 2026-02-10 | HIGH MICHAEL B | Director | Buy | 2K | $25.14 | $38K | 2K |
| 2025-07-02 | MACLEOD JAMES S | Director | Buy | 10K | $21.50 | $215K | 10K |
| 2025-07-02 | Hemby Lauren M. | CHIEF ACCOUNTING OFFICER | Buy | 5K | $21.50 | $97K | 10K |
| 2025-07-02 | Stone Stephen R. | PRESIDENT AND CEO | Buy | 2K | $21.50 | $47K | 120K |
| 2025-07-02 | Valduga Anthony P. | CFO AND COO | Buy | 2K | $21.50 | $32K | 82K |
| 2025-07-02 | Gutin Boris | Director | Buy | 11K | $21.50 | $237K | 18K |
| 2025-07-02 | FRAWLEY PATRICK M | Director | Buy | 5K | $21.50 | $100K | 84K |
| 2025-07-02 | Topper Joseph V. Jr. | Director | Buy | 100K | $21.50 | $2.1M | 108K |
| 2025-07-02 | Turner Cameron Bradley | CHIEF CREDIT OFFICER | Buy | 1K | $21.50 | $22K | 6K |
| 2025-07-02 | Richardson James N. Jr. | Director | Buy | 20K | $21.50 | $430K | 129K |
| 2025-07-02 | Bruderer Ernst W. | Director | Buy | 2K | $21.50 | $43K | 47K |
| 2025-07-02 | Askins L. Scott | Director | Buy | 2K | $21.50 | $50K | 14K |
| 2025-07-02 | ALDRIDGE JOHN G JR | Director | Buy | 5K | $21.50 | $108K | 18K |
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. JSON5 Form 144 notices on file for COSO worth $333K at the prices reported; 5 in the last 90 days worth $333K. Latest: Bruderer Ernst W. filed on 2026-10-23 to sell 6,000 shares ($167K) from 2026-10-23.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-23 | Bruderer Ernst W.Director | 6K | $167K | 0.050% | 2026-10-23 | Raymond James & Associates, Inc. |
| 2026-08-31 | Bruderer Ernst W.Officer | 2K | $55K | 0.017% | 2026-08-31 | Raymond James and Associates |
| 2026-08-26 | Bruderer Ernst W.Officer | 2K | $55K | 0.017% | 2026-08-26 | Raymond James and Associates Inc. |
| 2026-08-25 | Bruderer Ernst W.Officer | 1K | $28K | 0.008% | 2026-08-10 | Raymond James and Associates |
| 2026-08-24 | Bruderer Ernst W.Officer | 1K | $28K | 0.008% | 2026-08-18 | Raymond James and Associates |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON5 holders report 5% or more of COSO in their latest filing, all on Schedule 13G (passive). The largest reported stake is EJF Capital LLC at 8.5% of the class (930,171 shares), filed 2025-11-13 for an event on 2025-07-01.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-18 | 13G/Ano. 2 | Deutsch James F.individual | 573K | 4.8% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | WYCOFF W KIRKindividual | 573K | 4.8% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | LYNCH JAMES Jindividual | 573K | 4.8% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | LUBERT IRA Mindividual | 573K | 4.8% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Partners II Coastal SPV, LLCother entity | 565K | 4.7% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Partners GP II, L.P.partnership | 565K | 4.7% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Partners GP II, LLCother entity | 565K | 4.7% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Partners II, L.P.partnership | 506K | 4.2% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Partners Parallel II, L.P.partnership | 59K | 0.5% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Manager, L.P.investment adviser, partnership | 8K | 0.1% | 2026-08-14 |
| 2026-08-18 | 13G/Ano. 2 | Patriot Financial Manager, LLCother entity | 8K | 0.1% | 2026-08-14 |
| 2026-08-14 | 13G/Ano. 2 | L. Phillip Stone, IVindividual | 225K | 1.9% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 2 | Fourthstone LLCinvestment adviser | 225K | 1.9% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 2 | Fourthstone Master Opportunity Fund Ltdother entity | 163K | 1.4% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 2 | Fourthstone GP LLCother entity | 62K | 0.5% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 2 | Fourthstone QP Opportunity Fund LPpartnership | 47K | 0.4% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 2 | Fourthstone Small-Cap Financials Fund LPpartnership | 15K | 0.1% | 2026-06-30 |
| 2026-05-28 | 13G/Ano. 1 | EJF Financial Services Fund, LPpartnership | 193K | 1.6% | 2026-03-31 |
| 2026-05-28 | 13G/Ano. 1 | EJF Capital LPinvestment adviser | 193K | 1.6% | 2026-03-31 |
| 2026-05-28 | 13G/Ano. 1 | Emanuel J. Friedmanindividual | 193K | 1.6% | 2026-03-31 |
| 2026-05-28 | 13G/Ano. 1 | Neal J. Wilsonindividual | 193K | 1.6% | 2026-03-31 |
| 2026-05-28 | 13G/Ano. 1 | EJF Financial Services GP, LLCother entity | 193K | 1.6% | 2026-03-31 |
| 2026-05-28 | 13G/Ano. 1 | EJF Sidecar Fund, Series LLC - Small Financial Equities Seriesother entity | 0 | 0.0% | 2026-03-31 |
| 2026-05-06 | 13G/Ano. 1 | JAMES F. DEUTSCHindividual | 691K | 5.8% | 2026-04-29 |
| 2026-05-06 | 13G/Ano. 1 | W. Kirk Wycoffindividual | 691K | 5.8% | 2026-04-29 |
| 2026-05-06 | 13G/Ano. 1 | James J. Lynchindividual | 691K | 5.8% | 2026-04-29 |
| 2026-05-06 | 13G/Ano. 1 | IRA M. LUBERTindividual | 691K | 5.8% | 2026-04-29 |
| 2025-11-13 | 13G | EJF Capital LLCinvestment adviser | 930K | 8.5% | 2025-07-01 |
13F holders
Tracked managers holding COSO at their latest 13F. JSON6 of the 30 tracked managers held COSO at their latest 13F, $18.5M in total at quarter-end prices. Two Sigma Investments is the largest at $11.0M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Two Sigma Investments | 2026-06-30 | 408K | $11.0M | 0.01% | +308K |
| Citadel Advisors | 2026-06-30 | 89K | $2.4M | 0.00% | new |
| AQR Capital Management | 2026-06-30 | 70K | $1.9M | 0.00% | +25K |
| Point72 Asset Management | 2026-06-30 | 64K | $1.7M | 0.00% | new |
| Millennium Management | 2026-06-30 | 32K | $860K | 0.00% | +11K |
| D. E. Shaw & Co. | 2026-06-30 | 26K | $701K | 0.00% | new |
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
CoastalSouth Bancshares 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 CoastalSouth Bancshares (COSO), SEC CIK 1297107, listed on NYSE. 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 2026-09-02.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 2026-10-23.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 2026-08-18.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 2026-10-19.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 2026-08-31.JSON and CSV
- Company record
- EDGAR filing index for CIK 1297107Ticker, 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.
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Datasets
Frequently Asked Questions
How much of COSO is sold short?
What is COSO's daily short volume?
Does COSO have fails to deliver?
Are COSO insiders buying or selling?
Have COSO insiders filed to sell?
Who owns 5% or more of COSO?
Which tracked 13F managers own COSO?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.