Westamerica Bancorporation (WABC)
Nasdaq: WABC · National Commercial Banks · San Rafael, CA · filing with the SEC since 1994
Who owns Westamerica Bancorporation
As filed with the SECHolders of 5% or more
4
American Century Investment Management, Inc. holds 8.3% of Common Stock, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
11
report now, of 25 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
American Century Investment Management, Inc.
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
State Street Corporation
SCHEDULE 13G · filed Aug 7, 2026 · COMMON STOCK · 4.6% in May 13, 2025
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What WABC reports owning in othersstakes of 5% or more, and other ties
6 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 27, 2026.
Insider tradesForm 4
1sales
1purchases
0sales on a scheduled plan
1people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 23, 2025 to Oct 23, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 23, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 25 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Wondeh Inez | director | 0 | $0 | 0 | 1 | $0 |
| Baker Robert James Jr | SVP/Banking Division Manager | 1 | $0 | 0 | 0 | $0 |