Westamerica Bancorporation
US ˙ NasdaqGS ˙ US9570901036

SecurityWABC / Westamerica Bancorporation
InstitutionStifel Financial Corp
Latest Disclosed Ownership13,124 shares
Latest Disclosed Value $ 684,419
Stifel Financial Corp reports 0.91% increase in ownership of WABC / Westamerica Bancorporation

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 13,124 shares of Westamerica Bancorporation (US:WABC) valued at $684,417 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 13,006 shares of Westamerica Bancorporation. This represents a change in shares of 0.91% during the quarter. The current value of the position is $739,144 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)
2026-05-12 2026-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 13,124 118 0.91 684 9.97 0.0001
2026-02-13 2025-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 13,006 116 0.90 622 -3.42 0.0006
2025-11-12 2025-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,890 112 0.88 644 4.04 0.0006
2025-08-14 2025-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,778 108 0.85 619 -3.43 0.0006
2025-05-14 2025-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 12,670 106 0.84 641 -2.73 0.0007
2025-02-13 2024-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 12,564 90 0.72 659 6.98 0.0007
2024-11-14 2024-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,474 104 0.84 616 2.67 0.0006
2024-08-13 2024-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 12,370 102 0.83 600 0.17 0.0007
2024-05-14 2024-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 12,268 7,606 163.15 600 128.63 0.0007
2024-02-12 2023-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 4,662 4,662 263 0.0003
2016-02-16 2015-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 0 -7,693 -100.00 0 -100.00
2015-11-16 2015-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 7,693 -2,237 -22.53 343 -31.81 0.0019
2015-08-17 2015-06-30 13F/A-1 WESTAMERICA BANCORPORATION COM 957090103 9,930 1,110 12.59 503 32.02 0.0026
2015-08-17 2015-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 9,930 503
2015-05-14 2015-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 8,820 193 2.24 381 -9.93 0.0021
2015-02-13 2014-12-31 13F WESTAMERICA BANCORPORATION COM 957090103 8,627 606 7.56 423 13.40 0.0024
2014-11-13 2014-09-30 13F WESTAMERICA BANCORPORATION COM 957090103 8,021 9 0.11 373 -10.98 0.0033
2014-08-14 2014-06-30 13F WESTAMERICA BANCORPORATION COM 957090103 8,012 181 2.31 419 -1.18 0.0038
2014-05-15 2014-03-31 13F WESTAMERICA BANCORPORATION COM 957090103 7,831 7,831 424 0.0041
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.