WDFC

insider transactions

WD 40 CO — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Cluster buy signal: 6 different insiders made open-market purchases in the last 365 days, totalling $627.6K.

Net shares · 365d

+3.1K

3.1K buy · 0 sell

Net value · 365d

$627.6K

$627.6K in · $0 out

Sentiment · 365d

Net buying

100% buying · 0% selling

Open-market trades · 365d

3.1K buy · 0 sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Grant·A
Feb 18, 26

Plunk Ken Allen

Director

—

515 sh

Own New
Buy·P
Feb 5, 26

PENDARVIS DAVID

Director

$104.8K

424 sh · $247.15

Own +7%
Grant·A
Dec 12, 25

Saunders Anne

Director

—

612 sh

Own +22%
Grant·A
Dec 12, 25

Monteagudo Graciela

Director

—

612 sh

Own +27%
Grant·A
Dec 12, 25

CARTER DANIEL T

Director

—

612 sh

Own +8%
Grant·A
Dec 12, 25

Lee Lara L

Director

—

612 sh

Own +32%
Grant·A
Dec 12, 25

Magee Edward O Jr

Director

—

612 sh

Own +31%
Grant·A
Dec 12, 25

PENDARVIS DAVID

Director

—

612 sh

Own +10%
Grant·A
Dec 12, 25

Etchart Eric

Director

—

612 sh

Own +7%
Grant·A
Dec 12, 25

Etchart Eric

Director

—

367 sh

Own +4%
Grant·A
Dec 12, 25

Burks Cynthia

Director

—

612 sh

Own +47%
Buy·P
Oct 30, 25

Etchart Eric

Director

$97.0K

500 sh · $194.02

Own +6%
Buy·P
Oct 30, 25

PENDARVIS DAVID

Director

$102.7K

523 sh · $196.37

Own +10%
Buy·P
Oct 28, 25

KIAMILEV PHENIX Q.

VP, GC & Chief Compliance Ofcr

$11.0K

55 sh · $200.46

Own +1%
Buy·P
Oct 28, 25

Brass Steven A KEY

President and CEO

$72.6K

362 sh · $200.46

Own +1%
Buy·P
Oct 28, 25

HYZER SARA KATHLEEN KEY

VP, Finance & CFO

$40.1K

200 sh · $200.46

Own +3%
Buy·P
Oct 27, 25

CARTER DANIEL T

Director

$199.4K

1.0K sh · $199.37

Own +16%
Other·F
Oct 27, 25

HYZER SARA KATHLEEN KEY

VP, Finance & CFO

—

455 sh

Own -7%
Other·F
Oct 27, 25

HYZER SARA KATHLEEN KEY

VP, Finance & CFO

—

533 sh

Own -8%
Other·F
Oct 27, 25

Brass Steven A KEY

President and CEO

—

2.4K sh

Own -6%
Other·F
Oct 27, 25

Brass Steven A KEY

President and CEO

—

2.0K sh

Own -6%
Other·F
Oct 27, 25

LINDEMAN JEFFREY G

VP, Chief People, Cult. & Cap.

—

294 sh

Own -6%
Other·F
Oct 27, 25

LINDEMAN JEFFREY G

VP, Chief People, Cult. & Cap.

—

260 sh

Own -5%
Other·F
Oct 27, 25

KIAMILEV PHENIX Q.

VP, GC & Chief Compliance Ofcr

—

294 sh

Own -6%
Other·F
Oct 27, 25

KIAMILEV PHENIX Q.

VP, GC & Chief Compliance Ofcr

—

267 sh

Own -6%
Other·F
Oct 27, 25

NOBLE WILLIAM B

Group Managing Director

—

316 sh

Own -4%
Other·F
Oct 27, 25

NOBLE WILLIAM B

Group Managing Director

—

258 sh

Own -3%
Other·F
Oct 27, 25

Olsem Patricia Q KEY

Division President, Americas

—

401 sh

Own -7%
Other·F
Oct 27, 25

Olsem Patricia Q KEY

Division President, Americas

—

335 sh

Own -6%
Grant·A
Oct 9, 25

Brass Steven A KEY

President and CEO

—

3.9K sh

Own +11%
Grant·A
Oct 9, 25

Brass Steven A KEY

President and CEO

—

7.8K sh

Own +30%
Grant·A
Oct 9, 25

HYZER SARA KATHLEEN KEY

VP, Finance & CFO

—

895 sh

Own +15%
Grant·A
Oct 9, 25

HYZER SARA KATHLEEN KEY

VP, Finance & CFO

—

1.8K sh

Own +43%
Grant·A
Oct 9, 25

Olsem Patricia Q KEY

Division President, Americas

—

1.0K sh

Own +77%
Grant·A
Oct 9, 25

Olsem Patricia Q KEY

Division President, Americas

—

1.1K sh

Own +48%
Grant·A
Oct 9, 25

KIAMILEV PHENIX Q.

VP, GC & Chief Compliance Ofcr

—

821 sh

Own +21%
Grant·A
Oct 9, 25

KIAMILEV PHENIX Q.

VP, GC & Chief Compliance Ofcr

—

972 sh

Own +32%
Grant·A
Oct 9, 25

LINDEMAN JEFFREY G

VP, Chief People, Cult. & Cap.

—

821 sh

Own +18%
Grant·A
Oct 9, 25

LINDEMAN JEFFREY G

VP, Chief People, Cult. & Cap.

—

843 sh

Own +22%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Feb 18, 2026	Plunk Ken Allen	Director	Grant A	515	New	—	—
Feb 5, 2026	PENDARVIS DAVID	Director	Buy P	424	+7%	$247.15	$104.8K
Dec 12, 2025	Saunders Anne	Director	Grant A	612	+22%	—	—
Dec 12, 2025	Monteagudo Graciela	Director	Grant A	612	+27%	—	—
Dec 12, 2025	CARTER DANIEL T	Director	Grant A	612	+8%	—	—
Dec 12, 2025	Lee Lara L	Director	Grant A	612	+32%	—	—
Dec 12, 2025	Magee Edward O Jr	Director	Grant A	612	+31%	—	—
Dec 12, 2025	PENDARVIS DAVID	Director	Grant A	612	+10%	—	—
Dec 12, 2025	Etchart Eric	Director	Grant A	612	+7%	—	—
Dec 12, 2025	Etchart Eric	Director	Grant A	367	+4%	—	—
Dec 12, 2025	Burks Cynthia	Director	Grant A	612	+47%	—	—
Oct 30, 2025	Etchart Eric	Director	Buy P	500	+6%	$194.02	$97.0K
Oct 30, 2025	PENDARVIS DAVID	Director	Buy P	523	+10%	$196.37	$102.7K
Oct 28, 2025	KIAMILEV PHENIX Q.	VP, GC & Chief Compliance Ofcr	Buy P	55	+1%	$200.46	$11.0K
Oct 28, 2025	Brass Steven A KEY	President and CEO	Buy P	362	+1%	$200.46	$72.6K
Oct 28, 2025	HYZER SARA KATHLEEN KEY	VP, Finance & CFO	Buy P	200	+3%	$200.46	$40.1K
Oct 27, 2025	CARTER DANIEL T	Director	Buy P	1.0K	+16%	$199.37	$199.4K
Oct 27, 2025	HYZER SARA KATHLEEN KEY	VP, Finance & CFO	Other F	455	-7%	—	—
Oct 27, 2025	HYZER SARA KATHLEEN KEY	VP, Finance & CFO	Other F	533	-8%	—	—
Oct 27, 2025	Brass Steven A KEY	President and CEO	Other F	2.4K	-6%	—	—
Oct 27, 2025	Brass Steven A KEY	President and CEO	Other F	2.0K	-6%	—	—
Oct 27, 2025	LINDEMAN JEFFREY G	VP, Chief People, Cult. & Cap.	Other F	294	-6%	—	—
Oct 27, 2025	LINDEMAN JEFFREY G	VP, Chief People, Cult. & Cap.	Other F	260	-5%	—	—
Oct 27, 2025	KIAMILEV PHENIX Q.	VP, GC & Chief Compliance Ofcr	Other F	294	-6%	—	—
Oct 27, 2025	KIAMILEV PHENIX Q.	VP, GC & Chief Compliance Ofcr	Other F	267	-6%	—	—
Oct 27, 2025	NOBLE WILLIAM B	Group Managing Director	Other F	316	-4%	—	—
Oct 27, 2025	NOBLE WILLIAM B	Group Managing Director	Other F	258	-3%	—	—
Oct 27, 2025	Olsem Patricia Q KEY	Division President, Americas	Other F	401	-7%	—	—
Oct 27, 2025	Olsem Patricia Q KEY	Division President, Americas	Other F	335	-6%	—	—
Oct 9, 2025	Brass Steven A KEY	President and CEO	Grant A	3.9K	+11%	—	—
Oct 9, 2025	Brass Steven A KEY	President and CEO	Grant A	7.8K	+30%	—	—
Oct 9, 2025	HYZER SARA KATHLEEN KEY	VP, Finance & CFO	Grant A	895	+15%	—	—
Oct 9, 2025	HYZER SARA KATHLEEN KEY	VP, Finance & CFO	Grant A	1.8K	+43%	—	—
Oct 9, 2025	Olsem Patricia Q KEY	Division President, Americas	Grant A	1.0K	+77%	—	—
Oct 9, 2025	Olsem Patricia Q KEY	Division President, Americas	Grant A	1.1K	+48%	—	—
Oct 9, 2025	KIAMILEV PHENIX Q.	VP, GC & Chief Compliance Ofcr	Grant A	821	+21%	—	—
Oct 9, 2025	KIAMILEV PHENIX Q.	VP, GC & Chief Compliance Ofcr	Grant A	972	+32%	—	—
Oct 9, 2025	LINDEMAN JEFFREY G	VP, Chief People, Cult. & Cap.	Grant A	821	+18%	—	—
Oct 9, 2025	LINDEMAN JEFFREY G	VP, Chief People, Cult. & Cap.	Grant A	843	+22%	—	—

About WDFC insider trading

This page tracks insider transactions for WD 40 CO (WDFC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.