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Westamerica Bancorporation (WABC) 10K Form and Latest SEC Filings 2026

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Latest Westamerica Bancorporation SEC Filings & Recent Activity

Westamerica Bancorporation (NASDAQ:WABC) has submitted 287+ documents to the U.S. Securities and Exchange Commission (SEC) since 2018. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. Key figures from these filings, including revenue, earnings, and cash flow, are summarized in Westamerica Bancorporation's financial statements. The most recent filing was a Form 10-Q submitted on May 8, 2026.

Form 4
WESTAMERICA BANCORPORATION Reports Ownership Change on May. 4, 2026

Form 4 filings disclose changes in stock ownership by company insiders, including purchases, sales, grants, and option exercises.

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8-K
Westamerica Bancorporation Files Current Report on Apr. 27, 2026

An 8-K is filed when a material corporate event occurs, such as an acquisition, leadership change, or financial update.

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10-Q
Westamerica Bancorporation Files Quarterly Report on May. 8, 2026

The 10-Q contains Westamerica Bancorporation's unaudited quarterly financial statements, revenue, earnings updates, and cash flow changes between annual reports.

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Westamerica Bancorporation SEC Filing History

Browse Westamerica Bancorporation's complete SEC filing history using the filters below. Filter by form type - 10-K, 10-Q, 8-K, Form 4, and more - or set a custom date range to find a filing.

DateFilerForm TypeView
05/08/2026 12:53 PM
Westamerica Bancorporation (311094) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
05/04/2026 10:26 AM
Baker Robert James Jr (2014027) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/01/2026 4:05 PM
Baker Robert James Jr (2014027) Reporting
Westamerica Bancorporation (311094) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
04/30/2026 1:32 PM
VANGUARD CAPITAL MANAGEMENT LLC (2100119) Filed by
Westamerica Bancorporation (311094) Subject
Form SCHEDULE 13G
04/27/2026 4:25 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/24/2026 6:45 PM
Belton Curtis (1738156) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/24/2026 4:16 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/23/2026 4:15 PM
Westamerica Bancorporation (311094) Issuer
Wondeh Inez (1898736) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
04/23/2026 1:17 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/20/2026 4:58 PM
Baker Robert James Jr (2014027) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
04/20/2026 3:05 PM
Baker Robert James Jr (2014027) Reporting
Westamerica Bancorporation (311094) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
04/16/2026 1:02 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
03/27/2026 1:17 PM
VANGUARD GROUP INC (102909) Filed by
Westamerica Bancorporation (311094) Subject
Form SCHEDULE 13G/A
03/13/2026 1:13 PM
Westamerica Bancorporation (311094) Filer
Form DEFA14A
03/13/2026 1:15 PM
Westamerica Bancorporation (311094) Filer
Form ARS
03/13/2026 1:11 PM
Westamerica Bancorporation (311094) Filer
Form DEF 14A
03/06/2026 5:34 PM
Welch Carter Andrew Mr. (2117239) Reporting
Westamerica Bancorporation (311094) Issuer
Form 3
Initial statement of beneficial ownership of securities  
03/03/2026 5:58 PM
DONOHOE BRIAN J (1763817) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/02/2026 7:29 PM
Baker Robert James Jr (2014027) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/02/2026 7:26 PM
Ensinger George S (1764228) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/27/2026 4:08 PM
Westamerica Bancorporation (311094) Filer
Form 10-K
Annual report pursuant to Section 13 or 15(d)  
02/25/2026 10:27 AM
Jonas Anela Marya (2029688) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/04/2026 4:33 PM
BOWLER E JOSEPH (1261781) Reporting
Westamerica Bancorporation (311094) Issuer
Form 5
Annual statement of changes in beneficial ownership of securities  
02/04/2026 4:26 PM
THORSON JOHN A (1201516) Reporting
Westamerica Bancorporation (311094) Issuer
Form 5
Annual statement of changes in beneficial ownership of securities  
01/30/2026 12:14 PM
Mihalik Matthew John (2108497) Reporting
Westamerica Bancorporation (311094) Issuer
Form 3
Initial statement of beneficial ownership of securities  
01/28/2026 3:24 PM
DONOHOE BRIAN J (1763817) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4/A
01/26/2026 5:33 PM
Baker Robert James Jr (2014027) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/26/2026 5:21 PM
Jonas Anela Marya (2029688) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/26/2026 5:27 PM
DONOHOE BRIAN J (1763817) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/26/2026 5:01 PM
Ensinger George S (1764228) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/26/2026 5:09 PM
Thorsen Cheryl Christine (2079115) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/26/2026 5:16 PM
Belton Curtis (1738156) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
01/23/2026 10:21 AM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/22/2026 1:15 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/15/2026 1:19 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/18/2025 1:59 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/07/2025 1:12 PM
Westamerica Bancorporation (311094) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
10/23/2025 12:59 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/16/2025 12:17 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/12/2025 1:25 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
08/06/2025 1:23 PM
Westamerica Bancorporation (311094) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
08/06/2025 1:55 PM
Westamerica Bancorporation (311094) Filer
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
07/29/2025 6:46 PM
Thorsen Cheryl Christine (2079115) Reporting
Westamerica Bancorporation (311094) Issuer
Form 3
Initial statement of beneficial ownership of securities  
07/24/2025 11:59 AM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/17/2025 12:16 PM
Westamerica Bancorporation (311094) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
07/11/2025 2:21 PM
THORSON JOHN A (1201516) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/08/2025 3:35 PM
THORSON JOHN A (1201516) Reporting
Westamerica Bancorporation (311094) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
07/03/2025 12:10 PM
THORSON JOHN A (1201516) Reporting
Westamerica Bancorporation (311094) Subject
Form 144
Notice of proposed sale of securities pursuant to Rule 144  
05/13/2025 11:31 AM
STATE STREET CORP (93751) Filed by
STATE STREET CORP (93751) Filed by
Westamerica Bancorporation (311094) Subject
Form SCHEDULE 13G
(Data available from 1/1/2016 forward)

Westamerica Bancorporation SEC Filings - Frequently Asked Questions

Westamerica Bancorporation (WABC) has submitted 287+ filings to the SEC since 2018. You can browse the complete history or filter by form type using the tools above.

Westamerica Bancorporation's fiscal year ends on December 31. The company typically files its 10-K annual report by the end of February, covering the prior fiscal year's financial results. Key financial data from these reports is available on Westamerica Bancorporation's financial statements page.

The most recent filing was a Form 10-Q submitted on May 8, 2026. This was a quarterly financial update for 2025.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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This page (NASDAQ:WABC) was last updated on 5/11/2026 by MarketBeat.com Staff.
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