Westamerica Bancorporation
US ˙ NasdaqGS ˙ US9570901036

SecurityWABC / Westamerica Bancorporation
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership29,520 shares
Latest Disclosed Value $ 1,411,942
Alliancebernstein L.p. ownership in WABC / Westamerica Bancorporation

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 29,520 shares of Westamerica Bancorporation (US:WABC) valued at $1,539,468 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 29,520 shares of Westamerica Bancorporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,623,010 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,412 0.00 0.0005
2026-02-17 2025-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,412 -4.34 0.0004
2025-11-14 2025-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,476 3.22 0.0005
2025-08-14 2025-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,430 -4.35 0.0005
2025-05-15 2025-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,495 -3.49 0.0005
2025-02-12 2024-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,549 6.17 0.0005
2024-11-14 2024-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,459 1.82 0.0005
2024-08-14 2024-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 0 0.00 1,433 -0.69 0.0005
2024-05-14 2024-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 29,520 -5,450 -15.58 1,443 -26.88 0.0005
2024-02-14 2023-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 34,970 -3,080 -8.09 1,973 19.88 0.0008
2023-11-14 2023-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 38,050 0 0.00 1,646 12.90 0.0007
2023-08-15 2023-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 38,050 0 0.00 1,457 -13.53 0.0006
2023-05-15 2023-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 38,050 -3,972 -9.45 1,686 -32.03 0.0007
2023-02-15 2022-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 42,022 24 0.06 2,480 12.89 0.0011
2022-11-15 2022-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 41,998 1,169 2.86 2,196 -3.39 0.0011
2022-08-15 2022-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 40,829 440 1.09 2,273 -7.00 0.0010
2022-05-13 2022-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 40,389 138 0.34 2,444 5.16 0.0009
2022-02-14 2021-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 40,251 61 0.15 2,324 2.79 0.0008
2021-11-10 2021-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 40,190 -1,280 -3.09 2,261 -6.07 0.0009
2021-07-30 2021-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 41,470 0 0.00 2,407 -7.53 0.0010
2021-05-06 2021-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 41,470 30 0.07 2,603 13.62 0.0011
2021-02-08 2020-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 41,440 -1,650 -3.83 2,291 -2.18 0.0011
2020-11-12 2020-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 43,090 280 0.65 2,342 -4.72 0.0013
2020-08-13 2020-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 42,810 -620 -1.43 2,458 -3.72 0.0014
2020-05-14 2020-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 43,430 50 0.12 2,553 -13.16 0.0018
2020-02-18 2019-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 43,380 150 0.35 2,940 9.38 0.0017
2019-11-14 2019-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 43,230 -5,320 -10.96 2,688 -10.13 0.0017
2019-08-14 2019-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 48,550 11,000 29.29 2,991 28.87 0.0019
2019-05-14 2019-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 37,550 0 0.00 2,321 11.00 0.0015
2019-02-13 2018-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 37,550 0 0.00 2,091 -7.44 0.0016
2018-11-08 2018-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 37,550 -1,138 -2.94 2,259 3.34 0.0015
2018-08-13 2018-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 38,688 38 0.10 2,186 -2.63 0.0015
2018-05-14 2018-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 38,650 500 1.31 2,245 -1.19 0.0016
2018-02-13 2017-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 38,150 0 0.00 2,272 0.04 0.0016
2017-11-13 2017-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 38,150 0 0.00 2,271 6.22 0.0017
2017-08-10 2017-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 38,150 -3,700 -8.84 2,138 -8.48 0.0017
2017-05-11 2017-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 41,850 1,100 2.70 2,336 -8.89 0.0019
2017-02-13 2016-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 40,750 -1,000 -2.40 2,564 20.72 0.0021
2016-11-10 2016-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 41,750 0 0.00 2,124 3.26 0.0018
2016-08-11 2016-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 41,750 2,600 6.64 2,057 7.87 0.0018
2016-05-13 2016-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 39,150 -550 -1.39 1,907 2.75 0.0016
2016-02-16 2015-12-31 13F/A-1 WESTAMERICA BANCORPORATION COM 957090103 39,700 -5,850 -12.84 1,856 -8.30 0.0016
2016-02-12 2015-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 39,700 1,764
2015-11-13 2015-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 45,550 -90 -0.20 2,024 -12.46 0.0017
2015-08-14 2015-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 45,640 1,900 4.34 2,312 22.33 0.0019
2015-05-13 2015-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 43,740 0 0.00 1,890 -11.85 0.0015
2015-02-13 2014-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 43,740 -1,800 -3.95 2,144 1.18 0.0018
2014-11-13 2014-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 45,540 -1,452 -3.09 2,119 -13.76 0.0018
2014-08-13 2014-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 46,992 -295 -0.62 2,457 -3.91 0.0021
2014-05-13 2014-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 47,287 -2,363 -4.76 2,557 -8.78 0.0022
2014-02-13 2013-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 49,650 -106 -0.21 2,803 13.25 0.0025
2013-11-14 2013-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 49,756 -7,822 -13.59 2,475 -5.93 0.0024
2013-08-13 2013-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 57,578 57,578 2,631 0.0028
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.