Westamerica Bancorporation (WABC)
Westamerica Bancorporation 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.
863K
Short interest
settlement 2026-09-30
2.6
Days to cover
-3.1 days vs prior
68.8%
Short share of volume
2026-10-23
800
Fails to deliver
settlement 2026-09-03
Thu 14 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. JSONAs of 30 September 2026, short interest in WABC is 862,688 shares, down 37,723 shares over the last month. Over the last 48 readings it ranged from 165,609 shares (31 December 2024) to 949,492 shares (15 September 2026). At the reported average volume of 337K 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/wabc" 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 | 862,688 | -9.1% | 337,347 | 2.56 |
| 2026-09-15 | 949,492 | +5.5% | 166,569 | 5.70 |
| 2026-08-31 | 900,411 | +10.5% | 113,261 | 7.95 |
| 2026-08-14 | 815,083 | -5.8% | 124,581 | 6.54 |
| 2026-07-31 | 864,818 | +15.6% | 208,030 | 4.16 |
| 2026-07-15 | 748,347 | +9.3% | 195,249 | 3.83 |
| 2026-06-30 | 684,998 | -2.0% | 297,082 | 2.31 |
| 2026-06-15 | 698,811 | +1.8% | 157,058 | 4.45 |
| 2026-05-29 | 686,820 | +20.4% | 163,374 | 4.20 |
| 2026-05-15 | 570,248 | +9.1% | 154,269 | 3.70 |
| 2026-04-30 | 522,790 | +8.7% | 221,851 | 2.36 |
| 2026-04-15 | 481,064 | -7.5% | 146,422 | 3.29 |
| 2026-03-31 | 520,052 | -19.0% | 278,629 | 1.87 |
| 2026-03-13 | 641,904 | +33.4% | 183,800 | 3.49 |
| 2026-02-27 | 481,170 | -5.6% | 150,218 | 3.20 |
| 2026-02-13 | 509,654 | +2.1% | 154,648 | 3.30 |
| 2026-01-30 | 499,370 | +25.8% | 151,875 | 3.29 |
| 2026-01-15 | 396,990 | -17.5% | 145,118 | 2.74 |
| 2025-12-31 | 481,160 | +8.4% | 155,525 | 3.09 |
| 2025-12-15 | 443,832 | +6.5% | 107,050 | 4.15 |
| 2025-11-28 | 416,610 | +0.9% | 126,170 | 3.30 |
| 2025-11-14 | 412,786 | +10.4% | 118,806 | 3.47 |
| 2025-10-31 | 373,829 | +1.9% | 155,357 | 2.41 |
| 2025-10-15 | 366,730 | +17.2% | 142,360 | 2.58 |
| 2025-09-30 | 312,983 | -19.4% | 188,625 | 1.66 |
| 2025-09-15 | 388,416 | +16.7% | 118,735 | 3.27 |
| 2025-08-29 | 332,885 | -11.7% | 149,388 | 2.23 |
| 2025-08-15 | 377,105 | +11.6% | 145,746 | 2.59 |
| 2025-07-31 | 337,922 | -2.8% | 135,681 | 2.49 |
| 2025-07-15 | 347,583 | -17.9% | 95,482 | 3.64 |
| 2025-06-30 | 423,086 | -2.4% | 152,349 | 2.78 |
| 2025-06-13 | 433,306 | +7.7% | 113,066 | 3.83 |
| 2025-05-30 | 402,177 | +9.6% | 157,915 | 2.55 |
| 2025-05-15 | 366,844 | +2.4% | 204,489 | 1.79 |
| 2025-04-30 | 358,350 | -8.9% | 159,799 | 2.24 |
| 2025-04-15 | 393,461 | +27.3% | 235,833 | 1.67 |
| 2025-03-31 | 309,102 | +10.1% | 199,654 | 1.55 |
| 2025-03-14 | 280,646 | +21.7% | 179,076 | 1.57 |
| 2025-02-28 | 230,680 | +12.9% | 133,961 | 1.72 |
| 2025-02-14 | 204,384 | -1.1% | 103,256 | 1.98 |
| 2025-01-31 | 206,695 | -0.3% | 117,318 | 1.76 |
| 2025-01-15 | 207,257 | +25.1% | 107,651 | 1.93 |
| 2024-12-31 | 165,609 | -8.5% | 134,911 | 1.23 |
| 2024-12-13 | 181,003 | -18.9% | 92,840 | 1.95 |
| 2024-11-29 | 223,312 | +20.7% | 88,301 | 2.53 |
| 2024-11-15 | 185,000 | +5.2% | 140,856 | 1.31 |
| 2024-10-31 | 175,898 | -27.6% | 116,778 | 1.51 |
| 2024-10-15 | 243,026 | -5.3% | 100,107 | 2.43 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of WABC volume is 68.8%, down 2.3 points over the last five sessions. Over the last 30 readings it ranged from 37.5% (20 October 2026) to 85.3% (23 September 2026). The latest reading is in line with the 30-session average of 68.6%, on 54K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 37K | 54K | 68.8% | 0 |
| 2026-10-22 | 29K | 51K | 57.6% | 0 |
| 2026-10-21 | 31K | 42K | 73.1% | 0 |
| 2026-10-20 | 18K | 49K | 37.5% | 0 |
| 2026-10-19 | 40K | 55K | 73.5% | 76 |
| 2026-10-16 | 60K | 84K | 71.1% | 402 |
| 2026-10-15 | 77K | 95K | 80.6% | 0 |
| 2026-10-14 | 35K | 48K | 72.0% | 0 |
| 2026-10-13 | 22K | 38K | 56.3% | 0 |
| 2026-10-12 | 32K | 48K | 67.4% | 1 |
| 2026-10-09 | 36K | 49K | 72.7% | 0 |
| 2026-10-08 | 59K | 85K | 69.7% | 794 |
| 2026-10-07 | 31K | 55K | 56.0% | 0 |
| 2026-10-06 | 24K | 41K | 58.5% | 0 |
| 2026-10-05 | 33K | 43K | 76.7% | 0 |
| 2026-10-02 | 42K | 54K | 78.4% | 0 |
| 2026-10-01 | 48K | 66K | 72.8% | 0 |
| 2026-09-30 | 68K | 84K | 80.3% | 31 |
| 2026-09-29 | 60K | 82K | 73.6% | 0 |
| 2026-09-28 | 70K | 102K | 69.3% | 100 |
| 2026-09-25 | 59K | 112K | 52.8% | 0 |
| 2026-09-24 | 30K | 56K | 54.2% | 0 |
| 2026-09-23 | 61K | 72K | 85.3% | 0 |
| 2026-09-22 | 38K | 49K | 77.4% | 0 |
| 2026-09-21 | 40K | 58K | 69.2% | 0 |
| 2026-09-18 | 97K | 134K | 72.6% | 1,400 |
| 2026-09-17 | 88K | 120K | 72.9% | 3,409 |
| 2026-09-16 | 62K | 80K | 76.8% | 60 |
| 2026-09-15 | 50K | 67K | 74.8% | 0 |
| 2026-09-14 | 51K | 90K | 56.8% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 3 September 2026, the fails-to-deliver balance in WABC is 800 shares, up 757 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (30 June 2026) to 3,363 shares (17 March 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-03 | 800 | $58.92 | $47K |
| 2026-09-02 | 43 | $58.17 | $3K |
| 2026-08-26 | 2 | $57.92 | $116 |
| 2026-08-25 | 2 | $58.33 | $117 |
| 2026-08-24 | 2 | $58.47 | $117 |
| 2026-07-24 | 1,045 | $60.31 | $63K |
| 2026-07-20 | 567 | $61.36 | $35K |
| 2026-07-16 | 43 | $59.02 | $3K |
| 2026-07-09 | 105 | $57.65 | $6K |
| 2026-07-08 | 149 | $58.77 | $9K |
| 2026-07-07 | 45 | $59.31 | $3K |
| 2026-06-30 | 1 | $58.48 | $58 |
| 2026-06-29 | 80 | $58.85 | $5K |
| 2026-06-15 | 35 | $58.15 | $2K |
| 2026-06-03 | 51 | $55.81 | $3K |
| 2026-06-02 | 436 | $55.15 | $24K |
| 2026-05-29 | 25 | $55.35 | $1K |
| 2026-05-26 | 105 | $55.36 | $6K |
| 2026-05-20 | 72 | $54.66 | $4K |
| 2026-05-13 | 2,243 | $53.96 | $121K |
| 2026-04-23 | 60 | $53.91 | $3K |
| 2026-04-20 | 450 | $54.07 | $24K |
| 2026-04-14 | 2,406 | $53.87 | $130K |
| 2026-03-31 | 1,786 | $51.42 | $92K |
| 2026-03-23 | 65 | $49.61 | $3K |
| 2026-03-17 | 3,363 | $50.82 | $171K |
| 2026-03-10 | 28 | $49.98 | $1K |
| 2026-03-06 | 44 | $50.79 | $2K |
| 2026-02-27 | 1,900 | $52.26 | $99K |
| 2025-11-20 | 127 | $46.55 | $6K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for WABC in the last 90 days. The most recent filings are listed below. Latest filing: Wondeh Inez (Director) on 2026-04-22.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-04-22 | Wondeh Inez | Director | Buy | 61 | $53.78 | $3K | 1K |
| 2026-04-20 | Baker Robert James Jr | SVP/Banking Division Manager | Sell | 759 | $53.83 | $41K | 0 |
| 2026-03-02 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 1K | $50.90 | $59K | 7K |
| 2026-03-02 | Baker Robert James Jr | SVP/Banking Division Manager | Tax withholding | 601 | $50.90 | $31K | 759 |
| 2026-03-02 | DONOHOE BRIAN J | SVP/Chief Information Officer | Tax withholding | 1K | $50.90 | $51K | 4K |
| 2026-02-24 | Jonas Anela Marya | SVP/CFO | Grant | 15 | $0.00 | $0 | 236 |
| 2026-01-22 | DONOHOE BRIAN J | SVP/Chief Information Officer | Grant | 2K | $0.00 | $0 | 2K |
| 2026-01-22 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 408 | $0.00 | $0 | 8K |
| 2026-01-22 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 986 | $0.00 | $0 | 7K |
| 2026-01-22 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 6K |
| 2026-01-22 | DONOHOE BRIAN J | SVP/Chief Information Officer | Grant | 2K | $0.00 | $0 | 2K |
| 2026-01-22 | Baker Robert James Jr | SVP/Banking Division Manager | Grant | 1K | $0.00 | $0 | 1K |
| 2025-04-29 | Wondeh Inez | Director | Buy | 451 | $48.51 | $22K | 946 |
| 2025-04-28 | THORSON JOHN A | SVP/Treasurer | Sell | 2K | $48.57 | $109K | 12K |
| 2025-04-24 | Baker Robert James Jr | SVP/Banking Division Manager | Sell | 710 | $48.16 | $34K | 0 |
| 2025-04-24 | Camsey Martin | Director | Buy | 63 | $47.50 | $3K | 63 |
| 2025-03-03 | Baker Robert James Jr | SVP/Banking Division Manager | Tax withholding | 560 | $51.82 | $29K | 710 |
| 2025-03-03 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 588 | $51.82 | $30K | 5K |
| 2025-03-03 | DONOHOE BRIAN J | SVP/Chief Information Officer | Tax withholding | 998 | $51.82 | $52K | 47 |
| 2025-03-03 | THORSON JOHN A | SVP/Treasurer | Tax withholding | 2K | $51.82 | $104K | 3K |
| 2025-01-29 | Baker Robert James Jr | SVP/Banking Division Manager | Sell | 248 | $51.76 | $13K | 1K |
| 2025-01-23 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $0.00 | $0 | 2K |
| 2025-01-23 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $0.00 | $0 | 4K |
| 2025-01-23 | THORSON JOHN A | SVP/Treasurer | Grant | 854 | $0.00 | $0 | 5K |
| 2025-01-23 | DONOHOE BRIAN J | SVP/Chief Information Officer | Grant | 2K | $0.00 | $0 | 4K |
| 2025-01-23 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 6K |
| 2025-01-23 | Baker Robert James Jr | SVP/Banking Division Manager | Grant | 1K | $0.00 | $0 | 2K |
| 2025-01-23 | Baker Robert James Jr | SVP/Banking Division Manager | Grant | 1K | $0.00 | $0 | 2K |
| 2024-07-24 | DONOHOE BRIAN J | SVP/Chief Information Officer | Grant | 25 | $0.00 | $0 | 2K |
| 2024-07-22 | Baker Robert James Jr | SVP/Banking Division Manager | Sell | 705 | $52.73 | $37K | 244 |
| 2024-06-25 | THORSON JOHN A | SVP/CFO | Grant | 35 | $0.00 | $0 | 14K |
| 2024-04-29 | Ensinger George S | SVP/Human Resources Div. Mgr | Sell | 635 | $47.61 | $30K | 4K |
| 2024-04-23 | Belew Alisa Jane | Director | Buy | 208 | $47.81 | $10K | 208 |
| 2024-04-22 | THORSON JOHN A | SVP/CFO | Sell | 1K | $47.24 | $52K | 0 |
| 2024-03-26 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 10 | $47.17 | $472 | 5K |
| 2024-03-01 | DONOHOE BRIAN J | SVP/Operations and Systems Mgr | Tax withholding | 748 | $45.58 | $34K | 2K |
| 2024-03-01 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 587 | $45.58 | $27K | 5K |
| 2024-03-01 | THORSON JOHN A | SVP/CFO | Tax withholding | 1K | $45.58 | $49K | 1K |
| 2024-02-01 | PAYNE DAVID L | Chairman, President & CEO | Sell | 11K | $46.79 | $527K | 242K |
| 2024-01-31 | PAYNE DAVID L | Chairman, President & CEO | Sell | 15K | $49.00 | $735K | 254K |
| 2024-01-30 | PAYNE DAVID L | Chairman, President & CEO | Sell | 10K | $49.51 | $495K | 269K |
| 2024-01-29 | PAYNE DAVID L | Chairman, President & CEO | Sell | 10K | $48.28 | $483K | 279K |
| 2024-01-25 | THORSON JOHN A | SVP/CFO | Grant | 2K | $0.00 | $0 | 2K |
| 2024-01-25 | PAYNE DAVID L | Chairman, President & CEO | Sell | 15K | $49.75 | $746K | 289K |
| 2024-01-25 | DONOHOE BRIAN J | SVP/Operations and Systems Mgr | Grant | 2K | $0.00 | $0 | 3K |
| 2024-01-25 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 5K |
| 2024-01-24 | PAYNE DAVID L | Chairman, President & CEO | Sell | 30K | $49.50 | $1.5M | 304K |
| 2024-01-23 | PAYNE DAVID L | Chairman, President & CEO | Sell | 9K | $50.95 | $445K | 334K |
| 2023-08-03 | Belton Curtis | Vice President/General Auditor | Sell | 464 | $49.04 | $23K | 0 |
| 2023-07-25 | Belton Curtis | Vice President/General Auditor | Sell | 26 | $48.75 | $1K | 0 |
| 2023-06-15 | PAYNE DAVID L | Chairman, President & CEO | Inheritance | 342K | $0.00 | $0 | 342K |
| 2023-05-04 | Chiesa Melanie Martella | Director | Buy | 250 | $36.69 | $9K | 250 |
| 2023-05-04 | Hassid Michele R. | Director | Buy | 265 | $37.70 | $10K | 623 |
| 2023-04-27 | Wondeh Inez | Director | Buy | 495 | $40.38 | $20K | 495 |
| 2023-03-01 | THORSON JOHN A | SVP/Treasurer | Tax withholding | 976 | $55.38 | $54K | 14K |
| 2023-03-01 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 565 | $55.38 | $31K | 4K |
| 2023-03-01 | DONOHOE BRIAN J | SVP/Operations and Systems Mgr | Tax withholding | 530 | $55.38 | $29K | 752 |
| 2023-01-26 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $0.00 | $0 | 2K |
| 2023-01-26 | DONOHOE BRIAN J | SVP/Operations and Systems Mgr | Grant | 1K | $0.00 | $0 | 1K |
| 2023-01-26 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 4K |
| 2022-11-03 | Hassid Michele R. | Director | Buy | 173 | $60.43 | $10K | 358 |
| 2022-07-28 | Rizzardi Russell W | SVP/Chief Credit Administrator | Sell | 15 | $59.10 | $887 | 0 |
| 2022-03-01 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 578 | $58.66 | $34K | 3K |
| 2022-03-01 | THORSON JOHN A | SVP/Treasurer | Tax withholding | 996 | $58.66 | $58K | 13K |
| 2022-02-03 | Ensinger George S | SVP/Human Resources Div. Mgr | Sell | 1K | $58.60 | $59K | 4K |
| 2022-01-27 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 5K |
| 2022-01-27 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $0.00 | $0 | 2K |
| 2022-01-25 | Rizzardi Russell W | SVP/Chief Credit Administrator | Grant | 15 | $58.74 | $881 | 15 |
| 2021-04-19 | MAC MILLAN CATHERINE C | Director | Sell | 2K | $64.15 | $141K | 0 |
| 2021-04-13 | BARTOLINI LOUIS E | Director | Gift | 50 | $0.00 | $0 | 700 |
| 2021-04-12 | BARTOLINI LOUIS E | Director | Gift | 50 | $0.00 | $0 | 750 |
| 2021-03-01 | Ensinger George S | SVP/Human Resources Div. Mgr | Returned to company | 740 | $61.09 | $45K | 0 |
| 2021-03-01 | THORSON JOHN A | SVP/Treasurer | Tax withholding | 996 | $61.09 | $61K | 994 |
| 2021-03-01 | THORSON JOHN A | SVP/Treasurer | Returned to company | 994 | $61.09 | $61K | 0 |
| 2021-03-01 | THORSON JOHN A | SVP/Treasurer | Tax withholding | 996 | $61.09 | $61K | 12K |
| 2021-03-01 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 570 | $61.09 | $35K | 740 |
| 2021-01-28 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 1K |
| 2021-01-28 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $0.00 | $0 | 2K |
| 2020-10-30 | Hassid Michele R. | Director | Buy | 185 | $52.75 | $10K | 185 |
| 2020-03-02 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $58.14 | $125K | 12K |
| 2020-03-02 | THORSON JOHN A | SVP/Treasurer | Tax withholding | 1K | $58.14 | $74K | 11K |
| 2020-03-02 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $58.14 | $83K | 4K |
| 2020-03-02 | Ensinger George S | SVP/Human Resources Div. Mgr | Tax withholding | 590 | $58.14 | $34K | 4K |
| 2020-02-03 | Ensinger George S | SVP/Human Resources Div. Mgr | Sell | 500 | $64.63 | $32K | 3K |
| 2020-02-03 | Ensinger George S | SVP/Human Resources Div. Mgr | Exercise or conversion | 500 | $42.33 | $21K | 3K |
| 2020-01-23 | THORSON JOHN A | SVP/Treasurer | Grant | 2K | $0.00 | $0 | 2K |
| 2020-01-23 | DONOHOE BRIAN J | SVP/Operations and Systems Mgr | Grant | 1K | $0.00 | $0 | 1K |
| 2020-01-23 | Ensinger George S | SVP/Human Resources Div. Mgr | Grant | 1K | $0.00 | $0 | 3K |
| 2020-01-22 | SYLVESTER EDWARD B | Director | Sell | 5K | $66.13 | $331K | 57K |
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. JSON7 Form 144 notices on file for WABC worth $5.3M at the prices reported; 1 in the last 90 days worth $454K. Latest: Belton Curtis filed on 2026-10-23 to sell 7,400 shares ($454K) from 2026-10-23.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-23 | Belton CurtisOfficer | 7K | $454K | 0.032% | 2026-10-23 | Charles Schwab & Co., Inc. |
| 2026-07-24 | Belton CurtisOfficer | 9K | $557K | 0.039% | 2026-07-24 | Charles Schwab & Co., Inc. |
| 2026-07-20 | DONOHOE BRIAN JOfficer | 21K | $1.3M | 0.089% | 2026-07-20 | Charles Schwab & Co., Inc. |
| 2026-07-20 | Baker Robert James JrOfficer | 29K | $1.8M | 0.125% | 2026-07-20 | Charles Schwab & Co., Inc. |
| 2026-05-01 | Baker Robert James JrOfficer | 10K | $564K | 0.042% | 2026-05-01 | Charles Schwab & Co., Inc. |
| 2026-04-24 | Belton CurtisOfficer | 11K | $581K | 0.044% | 2026-04-24 | Charles Schwab & Co., Inc. |
| 2026-04-20 | Baker Robert James JrOfficer | 759 | $41K | 0.003% | 2026-04-20 | Charles Schwab & Co., Inc. |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON3 holders report 5% or more of WABC in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 7.3% of the class (1,773,131 shares), filed 2026-04-29 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-07 | 13G | STATE STREET CORPORATIONparent holding company | 1.4M | 5.9% | 2026-06-30 |
| 2026-04-30 | 13G | Vanguard Capital Managementinvestment adviser | 1.3M | 5.3% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 1.8M | 7.3% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 15 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding WABC at their latest 13F. JSON5 of the 30 tracked managers held WABC at their latest 13F, $58.1M in total at quarter-end prices. AQR Capital Management is the largest at $29.1M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 495K | $29.1M | 0.01% | +96K |
| Two Sigma Investments | 2026-06-30 | 304K | $17.8M | 0.01% | -49K |
| Citadel Advisors | 2026-06-30 | 109K | $6.4M | 0.00% | -16K |
| Renaissance Technologies | 2026-06-30 | 72K | $4.3M | 0.01% | -80K |
| D. E. Shaw & Co. | 2026-06-30 | 10K | $569K | 0.00% | +4K |
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
Westamerica Bancorporation 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 Westamerica Bancorporation (WABC), SEC CIK 311094, listed on Nasdaq. 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 2026-09-03.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 2026-08-07.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 2026-10-15.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 2026-04-22.JSON and CSV
- Company record
- EDGAR filing index for CIK 311094Ticker, 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 WABC is sold short?
862,688 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 WABC's daily short volume?
On 2026-10-23, 37,143 of the 54,001 WABC shares reported to FINRA were sold short, 68.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does WABC have fails to deliver?
The SEC's latest file shows 800 WABC shares failed to deliver at settlement 2026-09-03. Fails are reported per settlement date and published twice a month with a lag.
Are WABC insiders buying or selling?
No open-market insider trades were reported for WABC in the last 90 days. The most recent filings are listed below. Latest filing: Wondeh Inez (Director) on 2026-04-22.
Have WABC insiders filed to sell?
7 Form 144 notices on file for WABC worth $5.3M at the prices reported; 1 in the last 90 days worth $454K. Latest: Belton Curtis filed on 2026-10-23 to sell 7,400 shares ($454K) from 2026-10-23.
Who owns 5% or more of WABC?
3 holders report 5% or more of WABC in their latest filing, all on Schedule 13G (passive). The largest reported stake is Vanguard Portfolio Management at 7.3% of the class (1,773,131 shares), filed 2026-04-29 for an event on 2026-03-31.
Which tracked 13F managers own WABC?
5 of the 30 tracked 13F managers held WABC shares at their latest filing, $58.1M in all. The largest: Cliff Asness's AQR Capital Management (495K shares, $29.1M), Two Sigma Investments (304K shares, $17.8M), Ken Griffin's Citadel Advisors (109K shares, $6.4M), Renaissance Technologies (72K shares, $4.3M), D. E. Shaw & Co. (10K shares, $569K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.