WD-40 grants Patricia Q. Olsem 1,054 stock units

Except as otherwise provided in the award agreement, the RSUs vest annually over three years.

Rhea-AI Filing Summary

WDFC's Americas division president Patricia Q. Olsem received a grant of 1,054 restricted stock units (RSUs) on October 8, 2026, under the WD-40 Company 2016 Stock Incentive Plan, as amended and restated effective December 12, 2023. Her reported direct Common Stock position following the grant was 5,628 shares; that amount includes 1,975 unvested RSUs, including this grant, 644 shares of restricted Common Stock received upon settlement of performance share units, and 89 vested deferred performance units, which are Common Stock equivalents. A separate indirect holding of 2,914 shares is attributed to the 2007 Olsem Family Trust, where Olsem shares voting power and investment discretion with her spouse.

Insider Trade Summary

Grant/Award: 1,054 shares

Grant/Award 2 txns

Insider Olsem Patricia Q

Role Division President, Americas

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	1,054	--	--
holding	Common Stock F3	--	--	--

Holdings After Transaction: Common Stock — 5,628 shares (Direct); Common Stock — 2,914 shares (Indirect, By Trust)

Footnotes (3)

1. F1. Represents a grant of restricted stock units (RSUs) under the WD-40 Company 2016 Stock Incentive Plan, as amended and restated effective December 12, 2023. Except as otherwise provided in the RSU award agreement, the RSUs vest annually over 3 years.
2. F2. As of the filing date, the amount reported includes: (i) 1,975 unvested RSUs (which include the grant of RSUs reported in this Form 4), (ii) 644 shares of restricted Common Stock received upon settlement of performance share units or PSUs, and (iii) 89 vested deferred performance units or DPUs, which are Common Stock equivalents.
3. F3. Under the 2007 Olsem Family Trust, Reporting Person shares voting power and investment discretion with her spouse.

Key Figures

RSUs granted: 1,054 RSUs Reported direct Common Stock position: 5,628 shares Unvested RSUs: 1,975 RSUs +3 more

6 metrics

RSUs granted 1,054 RSUs October 8, 2026

Reported direct Common Stock position 5,628 shares Following the grant; includes unvested RSUs and Common Stock equivalents

Unvested RSUs 1,975 RSUs Includes the grant reported

Restricted Common Stock from PSU settlement 644 shares Included in the reported direct position

Vested deferred performance units 89 units Common Stock equivalents included in the reported direct position

2007 Olsem Family Trust holding 2,914 shares Indirect holding; Olsem shares voting power and investment discretion with her spouse

Key Terms

restricted stock units (RSUs), Stock Incentive Plan, performance share units or PSUs, deferred performance units or DPUs

4 terms

restricted stock units (RSUs) financial

"grant of restricted stock units (RSUs) under the WD-40 Company"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

Stock Incentive Plan financial

"WD-40 Company 2016 Stock Incentive Plan"

A stock incentive plan is a company program that gives employees or directors pieces of ownership or the right to buy shares over time, similar to receiving a bonus paid in company stock instead of cash. Investors pay attention because these plans align staff incentives with long‑term company performance but can also dilute existing shareholders and affect reported profits when grants are expensed, so they influence both ownership percentages and financial results.

performance share units or PSUs financial

"received upon settlement of performance share units or PSUs"

deferred performance units or DPUs financial

"vested deferred performance units or DPUs"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RSUs did WDFC's Americas division president receive?

Patricia Q. Olsem received 1,054 RSUs on October 8, 2026.

When do Patricia Q. Olsem's WDFC RSUs vest?

Except as otherwise provided in the RSU award agreement, the RSUs vest annually over three years.

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

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Available on EDGAR 10/13/2026 - 07:09 PM EDT Accepted by SEC EDGAR 10/13/2026 - 07:08 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Olsem Patricia Q

(Last) (First) (Middle)

C/O: WD-40 COMPANY

9715 BUSINESSPARK AVENUE

(Street)

SAN DIEGO CALIFORNIA 92131

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
WD 40 CO [ WDFC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Division President, Americas

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/08/2026		A		1,054	A	(1)	5,628(2)	D
Common Stock								2,914(3)	I	By Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents a grant of restricted stock units (RSUs) under the WD-40 Company 2016 Stock Incentive Plan, as amended and restated effective December 12, 2023. Except as otherwise provided in the RSU award agreement, the RSUs vest annually over 3 years.

2. As of the filing date, the amount reported includes: (i) 1,975 unvested RSUs (which include the grant of RSUs reported in this Form 4), (ii) 644 shares of restricted Common Stock received upon settlement of performance share units or PSUs, and (iii) 89 vested deferred performance units or DPUs, which are Common Stock equivalents.

3. Under the 2007 Olsem Family Trust, Reporting Person shares voting power and investment discretion with her spouse.

	Ann T. Nguyen, attorney-in-fact for Patricia Q. Olsem	10/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)