WD 40 CO (WDFC)

Latest Insider Confidence Score

2026Q1

53.8
Bullish

Company insider confidence (by quarter)

2009Q4 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Rembolt Jay CFO 44,126 Oct 25, 2022
Brass Steven A CEO 33,761 Oct 29, 2025
Schmale Neal E Director 27,973 Dec 12, 2019
Bewley Peter D Director 25,736 Dec 13, 2017
Irwin Michael J President 22,616.18 Oct 30, 2013

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 18, 2026 Feb 19, 2026 Plunk Ken Allen Director Neutral 90.0 +515 100.00% ✗ -
Feb 19, 2026 Plunk Ken Allen Director Neutral 52.5 - 0.00% ✗ -
Feb 5, 2026 Feb 6, 2026 PENDARVIS DAVID Director Buy 90.0 +424 6.55% ✗ $104.8K
Dec 12, 2025 Dec 12, 2025 Magee Edward O Jr Director Neutral 90.0 +612 30.58% ✗ -
Dec 12, 2025 Dec 12, 2025 Etchart Eric Director Neutral 90.0 +979 11.70% ✗ -
Dec 12, 2025 Dec 12, 2025 CARTER DANIEL T Director Neutral 85.0 +612 8.49% ✗ -
Dec 12, 2025 Dec 12, 2025 PENDARVIS DAVID Director Neutral 90.0 +612 10.44% ✗ -
Dec 12, 2025 Dec 12, 2025 Lee Lara L Director Neutral 90.0 +612 32.36% ✗ -
Dec 12, 2025 Dec 12, 2025 Saunders Anne Director Neutral 90.0 +612 22.25% ✗ -
Dec 12, 2025 Dec 12, 2025 Monteagudo Graciela Director Neutral 90.0 +612 27.07% ✗ -
Dec 12, 2025 Dec 12, 2025 Burks Cynthia Director Neutral 90.0 +612 47.41% ✗ -
Oct 30, 2025 Oct 30, 2025 Etchart Eric Director Buy 90.0 +500 6.35% ✗ $97K
Oct 30, 2025 Oct 30, 2025 PENDARVIS DAVID Director Buy 90.0 +523 9.80% ✗ $102.7K
Oct 28, 2025 Oct 29, 2025 KIAMILEV PHENIX Q. VP, GC & Chief Compliance Ofcr Buy 78.8 +55 1.29% ✗ $11K
Oct 28, 2025 Oct 29, 2025 Brass Steven A CEO Buy 82.5 +362 1.08% ✗ $72.6K
Oct 28, 2025 Oct 29, 2025 HYZER SARA KATHLEEN CFO Buy 83.8 +200 3.49% ✗ $40.1K
Oct 27, 2025 Oct 29, 2025 Olsem Patricia Q President Neutral 47.5 -736 -8.44% ✗ -
Oct 27, 2025 Oct 29, 2025 NOBLE WILLIAM B Group Managing Director Neutral 47.5 -574 -3.50% ✗ -
Oct 27, 2025 Oct 28, 2025 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Neutral 47.5 -554 -10.16% ✗ -
Oct 27, 2025 Oct 28, 2025 KIAMILEV PHENIX Q. VP, GC & Chief Compliance Ofcr Neutral 47.5 -561 -6.00% ✗ -
Oct 27, 2025 Oct 28, 2025 HYZER SARA KATHLEEN CFO Neutral 47.5 -988 -14.70% ✗ -
Oct 27, 2025 Oct 28, 2025 Brass Steven A CEO Neutral 47.5 -4,352 -11.53% ✗ -
Oct 27, 2025 Oct 27, 2025 CARTER DANIEL T Director Buy 95.0 +1,000 16.12% ✗ $199.4K
Oct 9, 2025 Oct 10, 2025 Olsem Patricia Q President Neutral 90.0 +2,131 32.32% ✗ -
Oct 9, 2025 Oct 10, 2025 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Neutral 90.0 +1,664 43.91% ✗ -
Oct 9, 2025 Oct 10, 2025 KIAMILEV PHENIX Q. VP, GC & Chief Compliance Ofcr Neutral 90.0 +1,793 59.45% ✗ -
Oct 9, 2025 Oct 10, 2025 HYZER SARA KATHLEEN CFO Neutral 90.0 +2,646 64.90% ✗ -
Oct 9, 2025 Oct 10, 2025 Brass Steven A CEO Neutral 90.0 +11,666 44.72% ✗ -
Apr 11, 2025 Apr 15, 2025 HYZER SARA KATHLEEN CFO Buy 90.0 +256 6.71% ✗ $57K
Dec 12, 2024 Dec 16, 2024 Saunders Anne Director Neutral 90.0 +412 17.56% ✗ -
Dec 12, 2024 Dec 16, 2024 PENDARVIS DAVID Director Neutral 85.0 +412 8.35% ✗ -
Dec 12, 2024 Dec 16, 2024 Etchart Eric Director Neutral 85.0 +693 9.64% ✗ -
Dec 12, 2024 Dec 16, 2024 Magee Edward O Jr Director Neutral 90.0 +505 33.58% ✗ -
Dec 12, 2024 Dec 16, 2024 Monteagudo Graciela Director Neutral 90.0 +412 22.20% ✗ -
Dec 12, 2024 Dec 16, 2024 Lee Lara L Director Neutral 90.0 +412 27.73% ✗ -
Dec 12, 2024 Dec 16, 2024 Burks Cynthia Director Neutral 90.0 +412 46.50% ✗ -
Dec 12, 2024 Dec 16, 2024 CARTER DANIEL T Director Neutral 85.0 +412 7.10% ✗ -
Dec 12, 2024 Dec 16, 2024 MIHALIK TREVOR I Director Neutral 90.0 +693 19.85% ✗ -
Nov 13, 2024 Nov 14, 2024 NOBLE WILLIAM B Group Managing Director Sell 20.0 -1,000 -11.11% ✗ $289.7K
Oct 22, 2024 Oct 24, 2024 Olsem Patricia Q President Neutral 47.5 -718 -9.82% ✗ -
Oct 22, 2024 Oct 24, 2024 HYZER SARA KATHLEEN CFO Neutral 47.5 -846 -18.15% ✗ -
Oct 22, 2024 Oct 24, 2024 NOBLE WILLIAM B Group Managing Director, EIMEA Sell 42.5 -1,320 -12.79% ✗ $205.6K
Oct 22, 2024 Oct 24, 2024 KIAMILEV PHENIX Q. VP, General Counsel & Corp Sec Neutral 47.5 -531 -14.98% ✗ -
Oct 22, 2024 Oct 24, 2024 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Neutral 47.5 -407 -9.72% ✗ -
Oct 22, 2024 Oct 23, 2024 Brass Steven A CEO Neutral 47.5 -2,983 -10.27% ✗ -
Oct 3, 2024 Oct 7, 2024 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Neutral 90.0 +1,152 10.62% ✗ -
Oct 3, 2024 Oct 7, 2024 Brass Steven A CEO Neutral 90.0 +8,471 11.22% ✗ -
Oct 3, 2024 Oct 7, 2024 KIAMILEV PHENIX Q. VP, General Counsel & Corp Sec Neutral 90.0 +1,408 16.81% ✗ -
Oct 3, 2024 Oct 7, 2024 HYZER SARA KATHLEEN CFO Neutral 90.0 +1,998 18.09% ✗ -
Oct 3, 2024 Oct 7, 2024 NOBLE WILLIAM B Group Managing Director, EIMEA Neutral 90.0 +1,026 11.04% ✗ -
Oct 3, 2024 Oct 7, 2024 Olsem Patricia Q President Neutral 90.0 +1,841 33.66% ✗ -
May 9, 2024 May 10, 2024 HYZER SARA KATHLEEN CFO Buy 86.3 +213 8.65% ✗ $49.6K
Apr 16, 2024 Apr 17, 2024 Brass Steven A CEO Buy 82.5 +432 2.15% ✗ $100.3K
Apr 12, 2024 Apr 12, 2024 PENDARVIS DAVID Director Buy 90.0 +328 7.12% ✗ $77K
Feb 12, 2024 Feb 13, 2024 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Buy 86.3 +182 6.30% ✗ $49.6K
Dec 12, 2023 Dec 13, 2023 SANDFORT GREGORY A Director Neutral 82.5 +657 3.49% ✗ -
Dec 12, 2023 Dec 13, 2023 Magee Edward O Jr Director Neutral 90.0 +531 54.57% ✗ -
Dec 12, 2023 Dec 13, 2023 MIHALIK TREVOR I Director Neutral 90.0 +657 23.18% ✗ -
Dec 12, 2023 Dec 13, 2023 Etchart Eric Director Neutral 90.0 +657 10.06% ✗ -
Dec 12, 2023 Dec 13, 2023 Saunders Anne Director Neutral 90.0 +406 20.93% ✗ -
Dec 12, 2023 Dec 13, 2023 PENDARVIS DAVID Director Neutral 85.0 +406 9.67% ✗ -
Dec 12, 2023 Dec 13, 2023 Monteagudo Graciela Director Neutral 90.0 +406 28.00% ✗ -
Dec 12, 2023 Dec 13, 2023 Lee Lara L Director Neutral 90.0 +406 37.59% ✗ -
Dec 12, 2023 Dec 13, 2023 CARTER DANIEL T Director Neutral 85.0 +406 7.53% ✗ -
Dec 12, 2023 Dec 13, 2023 Burks Cynthia Director Neutral 90.0 +406 84.58% ✗ -
Oct 24, 2023 Oct 26, 2023 NOBLE WILLIAM B Group MD, EMEA & Emerging Mkts Neutral 47.5 -225 -2.36% ✗ -
Oct 24, 2023 Oct 26, 2023 Olsem Patricia Q President Neutral 47.5 -315 -5.45% ✗ -
Oct 24, 2023 Oct 26, 2023 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Neutral 47.5 -150 -4.93% ✗ -
Oct 24, 2023 Oct 26, 2023 KIAMILEV PHENIX Q. VP, General Counsel & Corp Sec Neutral 47.5 -157 -6.80% ✗ -
Oct 24, 2023 Oct 26, 2023 Brass Steven A CEO Neutral 47.5 -869 -4.14% ✗ -
Oct 24, 2023 Oct 26, 2023 HYZER SARA KATHLEEN CFO Neutral 47.5 -168 -6.36% ✗ -
Oct 5, 2023 Oct 10, 2023 NOBLE WILLIAM B Group MD, EMEA & Emerging Mkts Neutral 85.0 +556 6.25% ✗ -
Oct 5, 2023 Oct 10, 2023 Olsem Patricia Q President Neutral 90.0 +964 20.00% ✗ -
Oct 5, 2023 Oct 10, 2023 Brass Steven A CEO Neutral 90.0 +4,451 26.92% ✗ -
Oct 5, 2023 Oct 10, 2023 HYZER SARA KATHLEEN CFO Neutral 90.0 +1,112 72.68% ✗ -
Oct 5, 2023 Oct 10, 2023 LINDEMAN JEFFREY G VP, Chief People, Cult. & Cap. Neutral 90.0 +741 32.22% ✗ -
Oct 5, 2023 Oct 6, 2023 KIAMILEV PHENIX Q. VP, General Counsel & Corp Sec Neutral 90.0 +803 53.36% ✗ -
Jun 14, 2023 Jun 16, 2023 Olsem Patricia Q President Sell 28.8 -420 -8.01% ✓ $84K
Apr 13, 2023 Apr 14, 2023 LINDEMAN JEFFREY G VP, Chief People Officer Buy 95.0 +543 30.90% ✗ $97.2K
Apr 13, 2023 Apr 14, 2023 Brass Steven A CEO Buy 87.5 +558 3.49% ✗ $99.9K
Apr 13, 2023 Apr 14, 2023 HYZER SARA KATHLEEN CFO Buy 91.3 +168 12.33% ✗ $30.1K
Apr 13, 2023 Apr 14, 2023 KIAMILEV PHENIX Q. VP, General Counsel & Corp Sec Buy 91.3 +224 17.49% ✗ $40.1K
Feb 2, 2023 Feb 3, 2023 Olsem Patricia Q President Sell 28.8 -438 -7.71% ✓ $78.8K
Jan 18, 2023 Jan 19, 2023 Brass Steven A CEO Buy 87.5 +586 3.81% ✗ $100K
Dec 13, 2022 Dec 15, 2022 Saunders Anne Director Neutral 90.0 +480 32.88% ✗ -
Dec 13, 2022 Dec 15, 2022 SANDFORT GREGORY A Director Neutral 82.5 +840 4.67% ✗ -
Dec 13, 2022 Dec 15, 2022 PENDARVIS DAVID Director Neutral 90.0 +840 25.00% ✗ -
Dec 13, 2022 Dec 15, 2022 MIHALIK TREVOR I Director Neutral 90.0 +840 42.13% ✗ -
Dec 13, 2022 Dec 15, 2022 Etchart Eric Director Neutral 90.0 +840 14.76% ✗ -
Dec 13, 2022 Dec 15, 2022 Monteagudo Graciela Director Neutral 90.0 +480 49.48% ✗ -
Dec 13, 2022 Dec 15, 2022 CLAASSEN MELISSA Director Neutral 90.0 +840 14.23% ✗ -
Dec 13, 2022 Dec 14, 2022 Saunders Anne Director Neutral 90.0 +480 48.98% ✗ -
Dec 13, 2022 Dec 14, 2022 Magee Edward O Jr Director Neutral 90.0 +480 97.36% ✗ -
Dec 13, 2022 Dec 14, 2022 Lee Lara L Director Neutral 90.0 +480 80.00% ✗ -
Dec 13, 2022 Dec 14, 2022 CARTER DANIEL T Director Neutral 90.0 +840 18.45% ✗ -
Dec 13, 2022 Dec 14, 2022 Burks Cynthia Director Neutral 90.0 +480 100.00% ✗ -
Dec 13, 2022 Burks Cynthia Director Neutral 52.5 - 0.00% ✗ -
Nov 10, 2022 Nov 15, 2022 Olsem Patricia Q President Sell 10.0 -3,806 -40.13% ✓ $103.1K
Nov 2, 2022 HYZER SARA KATHLEEN CFO Neutral 52.5 - 0.00% ✗ -
Oct 26, 2022 Oct 27, 2022 Brass Steven A CEO Buy 87.5 +632 4.28% ✗ $100K