State Street Corporation (NASDAQ: WABC) reports 1.39M Westamerica Bancorp shares on 13G

Rhea-AI Filing Summary

State Street Corporation reports passive ownership of common stock of Westamerica Bancorporation. State Street and its listed asset management subsidiaries beneficially own 1,394,074 shares of Westamerica Bancorp common stock, representing 5.9% of the class as of this filing. They report 0 shares with sole voting or dispositive power, but have shared voting power over 283,756 shares and shared dispositive power over all 1,394,074 shares. No other person is identified as having rights to receive dividends or sale proceeds in excess of 5% of the class.

Key Figures

Beneficially owned shares: 1,394,074 shares Percent of class: 5.9% Shared voting power: 283,756 shares +3 more

6 metrics

Beneficially owned shares 1,394,074 shares Common stock of Westamerica Bancorp reported by State Street Corporation

Percent of class 5.9% Portion of Westamerica Bancorp common stock beneficially owned

Shared voting power 283,756 shares Shares over which State Street has shared power to vote or direct the vote

Shared dispositive power 1,394,074 shares Shares over which State Street has shared power to dispose or direct disposition

Sole voting power 0 shares Shares with sole voting authority reported by State Street

Sole dispositive power 0 shares Shares with sole dispositive authority reported by State Street

Key Terms

beneficially owned, dispositive power, Schedule 13G, parent holding company, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: 1394074.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

dispositive power financial

"shared power to dispose or to direct the disposition of: 1,394,074"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Schedule 13G regulatory

"a group has filed this schedule pursuant to 1(b)(1)(ii)(K)"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

parent holding company financial

"If a parent holding company has filed this schedule"

investment company financial

"shareholders of an investment company registered under the Investment Company Act of 1940"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

How many WABC shares does State Street Corporation report owning on this Schedule 13G?

State Street Corporation reports 1,394,074 Westamerica Bancorp (WABC) common shares as beneficially owned. This position represents institutional holdings across its asset management subsidiaries listed in the filing.

What percentage of Westamerica Bancorp (WABC) does State Street hold?

State Street reports owning 5.9% of Westamerica Bancorp’s common stock. This percentage is based on 1,394,074 beneficially owned shares relative to the issuer’s outstanding common shares.

What voting power does State Street have over its WABC shares?

State Street reports 0 shares with sole voting power and 283,756 shares with shared voting power. The remaining shares are held with shared dispositive power but without reported shared voting authority.

What dispositive power does State Street report over WABC stock?

State Street reports 0 shares with sole dispositive power and 1,394,074 shares with shared dispositive power. This means decisions to sell or otherwise dispose of these shares are made on a shared basis.

Which State Street subsidiaries are associated with the WABC holdings?

The filing associates the WABC holdings with several investment adviser subsidiaries, including SSGA Funds Management, Inc. and multiple State Street Global Advisors entities in the U.S., Europe, Japan, and Australia.

Does any other person have more than 5% economic interest in WABC through State Street’s holdings?

The filing states “NOT APPLICABLE” for others’ rights to receive dividends or sale proceeds over 5%. No specific third party is identified as holding such an interest through these shares.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

WESTAMERICA BANCORP

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

957090103

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 957090103

1

Names of Reporting Persons

STATE STREET CORPORATION

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MASSACHUSETTS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 283,756.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,394,074.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,394,074.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: WESTAMERICA BANCORP
(b)	Address of issuer's principal executive offices: 1108 FIFTH AVENUE, SAN RAFAEL, CALIFORNIA, 94901
Item 2.
(a)	Name of person filing: STATE STREET CORPORATION;
(b)	Address or principal business office or, if none, residence: ONE CONGRESS STREET, SUITE 1, BOSTON MA 02114, UNITED STATES
(c)	Citizenship: MA
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP Number(s): 957090103
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1394074.00
(b)	Percent of class: 5.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 283,756
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1,394,074
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. NOT APPLICABLE
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. SSGA FUNDS MANAGEMENT, INC. (IA);STATE STREET GLOBAL ADVISORS (JAPAN) CO., LTD. (IA);STATE STREET GLOBAL ADVISORS EUROPE LIMITED (IA);STATE STREET GLOBAL ADVISORS LIMITED (IA);STATE STREET GLOBAL ADVISORS TRUST COMPANY (IA);STATE STREET GLOBAL ADVISORS, AUSTRALIA, LIMITED (IA);STATE STREET GLOBAL ADVISORS, LTD. (IA);
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. NOT APPLICABLE
Item 9.	Notice of Dissolution of Group.
	Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5. NOT APPLICABLE

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

STATE STREET CORPORATION

Signature:	ELIZABETH SCHAEFER
Name/Title:	SENIOR VICE PRESIDENT, CHIEF ACCOUNTING OFFICER
Date:	08/07/2026