Westamerica Bancorporation
US ˙ NasdaqGS ˙ US9570901036

SecurityWABC / Westamerica Bancorporation
InstitutionAmalgamated Bank
Latest Disclosed Ownership7,077 shares
Latest Disclosed Value $ 369
Amalgamated Bank reports 2.03% decrease in ownership of WABC / Westamerica Bancorporation

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 7,077 shares of Westamerica Bancorporation (US:WABC) valued at $369,066 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 7,224 shares of Westamerica Bancorporation. The current value of the position is $400,417 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)
2026-05-08 2026-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 7,077 -147 -2.03 0 0.0028
2026-02-05 2025-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 7,224 -176 -2.38 0 0.0025
2025-10-29 2025-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 7,400 -47 -0.63 0 0.0026
2025-08-04 2025-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 7,447 -153 -2.01 0 0.0028
2025-04-25 2025-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 7,600 -160 -2.06 0 0.0033
2025-02-04 2024-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 7,760 -114 -1.45 0 0.0033
2024-10-30 2024-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 7,874 -232 -2.86 0 0.0032
2024-08-12 2024-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 8,106 -71 -0.87 0 0.0033
2024-04-23 2024-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 8,177 -1,927 -19.07 0 0.0034
2024-02-06 2023-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 10,104 -636 -5.92 1 0.0045
2023-11-08 2023-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 10,740 -93 -0.86 0 0.0040
2023-08-11 2023-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 10,833 -623 -5.44 0 0.0034
2023-05-02 2023-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 11,456 -823 -6.70 1 0.0043
2023-02-10 2022-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 12,279 0 0.00 1 -100.00 0.0065
2022-11-09 2022-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,279 96 0.79 642 -5.31 0.0062
2022-08-15 2022-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,183 222 1.86 678 -6.35 0.0063
2022-08-25 2022-03-31 13F/A-1 WESTAMERICA BANCORPORATION COM 957090103 11,961 -604 -4.81 724 -0.14 0.0056
2022-06-30 2022-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 11,961 -604 724 0.0057
2022-02-15 2021-12-31 13F/A-1 WESTAMERICA BANCORPORATION COM 957090103 12,565 -325 -2.52 725 0.00 0.0054
2022-02-15 2021-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 12,565 -325 725 0.0054
2021-10-29 2021-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,890 -251 -1.91 725 -4.98 0.0061
2021-08-16 2021-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 13,141 13,141 763 0.0061
2020-08-10 2020-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 0 -4,366 -100.00 0 -100.00
2020-05-13 2020-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 4,366 -133 -2.96 257 -15.74 0.0063
2020-02-13 2019-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 4,499 323 7.73 305 17.31 0.0056
2019-11-13 2019-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 4,176 -83 -1.95 260 -0.76 0.0055
2019-08-14 2019-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 4,259 453 11.90 262 11.49 0.0061
2019-05-15 2019-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 3,806 126 3.42 235 14.63 0.0057
2019-02-15 2018-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 3,680 -59 -1.58 205 -8.89 0.0058
2018-11-14 2018-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 3,739 -36 -0.95 225 5.63 0.0056
2018-07-18 2018-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 3,775 155 4.28 213 1.43 0.0052
2018-05-22 2018-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 3,620 -61 -1.66 210 -4.11 0.0056
2018-02-13 2017-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 3,681 255 7.44 219 7.35 0.0059
2017-11-09 2017-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 3,426 3,426 204 0.0064
2017-05-12 2017-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 0 -3,352 -100.00 0 -100.00
2017-02-14 2016-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 3,352 3,352 211 0.0095
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.