WD 40 Co
WDFC- Exchange
- Nasdaq
- Industry
- Miscellaneous Chemical Products
- SEC CIK
- 0000105132
In the last 90 days, WD 40 Co insiders filed 0 open-market purchases and 2 sales; 387 institutions reported holding it in 13F filings for Q2 2026, worth $2.85B in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by WD 40 Co insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 2 filings
- 1 insider, $117.1K in total
- Insiders trading
- 1
- Net value
- −$117.1K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for WD 40 Co, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Olsem Patricia Q | Division President, Americas | 4,574 | Aug 14, 2026 | 4 |
| Plunk Ken Allen | Director | 515 | Feb 19, 2026 | 1 |
| Pendarvis David | Director | 6,898 | Feb 6, 2026 | 3 |
| Carter Daniel T | Director | 7,817 | Dec 12, 2025 | 2 |
| Saunders Anne | Director | 3,363 | Dec 12, 2025 | 1 |
| Etchart Eric | Director | 9,349 | Dec 12, 2025 | 2 |
| Monteagudo Graciela | Director | 2,873 | Dec 12, 2025 | 1 |
| Lee Lara L | Director | 2,503 | Dec 12, 2025 | 1 |
| Magee Edward O Jr | Director | 2,613 | Dec 12, 2025 | 1 |
| Burks Cynthia | Director | 1,903 | Dec 12, 2025 | 1 |
| Noble William B | Group Managing Director | 8,097 | Oct 29, 2025 | 1 |
| Brass Steven A | President and CEO | 33,761 | Oct 29, 2025 | 3 |
| Kiamilev Phenix Q. | VP, GC & Chief Compliance Ofcr | 4,303Indirect | Oct 29, 2025 | 3 |
| Hyzer Sara Kathleen | VP, Finance & CFO | 5,935 | Oct 29, 2025 | 3 |
| Lindeman Jeffrey G | VP, Chief People, Cult. & Cap. | 4,900 | Oct 28, 2025 | 2 |
| Mihalik Trevor I | Director | 4,184 | Dec 16, 2024 | 0 |
| Sandfort Gregory A | Director | 19,479 | Dec 13, 2023 | 0 |
| Claassen Melissa | Director | 6,741 | Dec 15, 2022 | 0 |
| Holdsworth Geoffrey | Managing Director, Asia-Pac. | 6,061 | Oct 25, 2022 | 0 |
| Ridge Garry O | Director, Other: Chairman of the Board | 64,719 | Oct 25, 2022 | 0 |
| Rembolt Jay | VP, Finance, Treasurer & CFO | 44,126 | Oct 25, 2022 | 0 |
| Partlo Rae Ann | VP, Corporate Controller | 1,872 | Oct 25, 2022 | 0 |
| Clampitt Richard T | VP, General Counsel | 6,734 | Oct 26, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 (view filing)4:35 PM ET | Aug 13 | 1 day | Olsem Patricia QDivision President, Americas | SSale | −200 | $234.72 | −$46.9K | −4.2%4.57K after | |
| Aug 12, 2026 (view filing)5:41 PM ET | Aug 10 | 2 days | Olsem Patricia QDivision President, Americas | SSale | −300 | $233.73 | −$70.1K | −5.9%4.77K after | |
| Feb 6, 2026 (view filing) | Feb 5 | 1 day | Pendarvis DavidDirector | PPurchase | +424 | $247.15 | +$104.8K | +6.5%6.90K after | |
| Oct 30, 2025 (view filing) | Oct 30 | Same day | Etchart EricDirector | PPurchase | +500 | $194.02 | +$97.0K | +6.4%8.37K after | |
| Oct 30, 2025 (view filing) | Oct 30 | Same day | Pendarvis DavidDirector | PPurchase | +523 | $196.37 | +$102.7K | +9.8%5.86K after | |
| Oct 29, 2025 (view filing) | Oct 28 | 1 day | Kiamilev Phenix Q.VP, GC & Chief Compliance Ofcr | PPurchase | +55 | $200.46 | +$11.0K | +1.3%4.30K after | |
| Oct 29, 2025 (view filing) | Oct 28 | 1 day | Brass Steven APresident and CEO | PPurchase | +362 | $200.46 | +$72.6K | +1.1%33.8K after | |
| Oct 29, 2025 (view filing) | Oct 28 | 1 day | Hyzer Sara KathleenVP, Finance & CFO | PPurchase | +200 | $200.46 | +$40.1K | +3.5%5.93K after | |
| Oct 27, 2025 (view filing) | Oct 27 | Same day | Carter Daniel TDirector | PPurchase | +1.00K | $199.37 | +$199.4K | +16.1%7.21K after | |
| Apr 15, 2025 (view filing) | Apr 11 | 4 days | Hyzer Sara KathleenVP, Finance & CFO | PPurchase | +256 | $222.83 | +$57.0K | +6.7%4.07K after | |
| Nov 14, 2024 (view filing) | Nov 13 | 1 day | Noble William BGroup Managing Director | SSale | −1.00K | $289.70 | −$289.7K | −11.1%8.00K after | |
| Oct 24, 2024 (view filing) | Oct 22 | 2 days | Noble William BGroup Managing Director, EIMEA | SSale | −800 | $256.98 | −$205.6K | −8.2%9.00K after | |
| May 10, 2024 (view filing) | May 9 | 1 day | Hyzer Sara KathleenVP, Finance & CFO | PPurchase | +213 | $232.83 | +$49.6K | +8.6%2.68K after | |
| Apr 17, 2024 (view filing) | Apr 16 | 1 day | Brass Steven APresident and CEO | PPurchase | +432 | $232.22 | +$100.3K | +2.1%20.5K after | |
| Apr 12, 2024 (view filing) | Apr 12 | Same day | Pendarvis DavidDirector | PPurchase | +328 | $234.75 | +$77.0K | +7.1%4.93K after | |
| Feb 13, 2024 (view filing) | Feb 12 | 1 day | Lindeman Jeffrey GVP, Chief People, Cult. & Cap. | PPurchase | +182 | $272.42 | +$49.6K | +6.3%3.07K after | |
| Jun 16, 2023 (view filing) | Jun 14 | 2 days | Olsem Patricia QDivision President, Americas | SSale | −420 | $200.00 | −$84.0K | −15.3%2.32K after | 10b5-1 |
| Apr 14, 2023 (view filing) | Apr 13 | 1 day | Lindeman Jeffrey GVP, Chief People Officer | PPurchase | +543 | $179.08 | +$97.2K | +30.9%2.30K after | |
| Apr 14, 2023 (view filing) | Apr 13 | 1 day | Brass Steven APresident and CEO | PPurchase | +558 | $179.08 | +$99.9K | +3.5%16.5K after | |
| Apr 14, 2023 (view filing) | Apr 13 | 1 day | Hyzer Sara KathleenVP, Finance & CFO | PPurchase | +168 | $179.08 | +$30.1K | +12.3%1.53K after | |
| Apr 14, 2023 (view filing) | Apr 13 | 1 day | Kiamilev Phenix Q.VP, General Counsel & Corp Sec | PPurchase | +224 | $179.08 | +$40.1K | +17.5%1.50K after | |
| Feb 3, 2023 (view filing) | Feb 2 | 1 day | Olsem Patricia QDivision President, Americas | SSale | −438 | $180.00 | −$78.8K | −13.8%2.74K after | |
| Jan 19, 2023 (view filing) | Jan 18 | 1 day | Brass Steven APresident and CEO | PPurchase | +586 | $170.57 | +$100.0K | +3.8%16.0K after | |
| Nov 15, 2022 (view filing) | Nov 10 | 5 days | Olsem Patricia QDivision President, Americas | SSale | −625 | $165.00 | −$103.1K | −16.4%3.18K after | |
| Oct 27, 2022 (view filing) | Oct 26 | 1 day | Brass Steven APresident and CEO | PPurchase | +632 | $158.16 | +$100.0K | +4.3%15.4K after | |
| Oct 25, 2022 (view filing) | Oct 24 | 1 day | Holdsworth GeoffreyManaging Director, Asia-Pac. | SSale | −2.65K | $152.12 | −$403.4K | −30.4%6.06K after | |
| Aug 5, 2022 (view filing) | Aug 4 | 1 day | Etchart EricDirector | PPurchase | +500 | $177.60 | +$88.8K | +9.6%5.69K after | |
| Oct 26, 2021 (view filing) | Oct 22 | 4 days | Clampitt Richard TVP, General Counsel | SSale | −3.42K | $218.24 | −$746.4K | −100.0%0 after | |
| Jul 23, 2021 (view filing) | Jul 22 | 1 day | Holdsworth GeoffreyManaging Director AsiaPacific | SSale | −1.34K | $240.93 | −$324.1K | −17.5%6.33K after | |
| Jul 21, 2021 (view filing) | Jul 19-21 | 2 days | Ridge Garry OCEO and Chairman of the Board | SSale | −48.1K | $248.46 | −$11.9M | −47.3%53.5K after | 3 lots |