WDFC · Insider trading · 13F holders · Congress trades
WD 40 Co (WDFC)
Who is buying and selling WDFC: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 10
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $117K
- Congress trades, 12 months
- 2
WDFC at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 WDFC insider filed 2 sales worth $117K on SEC Form 4, and no open-market purchases.
- 10 13F filers hold WDFC among their 50 largest positions, worth $157.3M combined. The biggest bets by portfolio weight are DRH Investments, Inc. (6.6%), Ophir Asset Management Pty Ltd (4.1%) and Westhampton Capital, LLC (1.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- Members of Congress have disclosed 6 WDFC trades since 2019, 1 purchase and 1 sale in the past year; the latest was Lisa C. McClain (R-MI), selling $1K–15K on Jul 22, 2025.
- WDFC last closed at $219.41 on Oct 29, 2026.
WDFC insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 WDFC insider filed 2 sales worth $117K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Olsem Patricia Q | Division President, Americas | Sale | 200 | $234.72 | $47K | SEC |
| Aug 12, 2026 | Olsem Patricia Q | Division President, Americas | Sale | 300 | $233.73 | $70K | SEC |
Who owns WDFC? Hedge funds and superinvestors
10 13F filers hold WDFC among their 50 largest positions, worth $157.3M combined. The biggest bets by portfolio weight are DRH Investments, Inc. (6.6%), Ophir Asset Management Pty Ltd (4.1%) and Westhampton Capital, LLC (1.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Geneva Capital Management LLCAsset manager | 1.2% | $54.3M | 222,836 | -21.1% shares | Q2 2026 |
| Ophir Asset Management Pty LtdAsset manager | 4.1% | $49.3M | 202,300 | +91.3% shares | Q2 2026 |
| Conestoga Capital Advisors, LLCMutual fund manager | 0.7% | $30.7M | 126,199 | -33.6% shares | Q2 2026 |
| DRH Investments, Inc.Wealth manager | 6.6% | $8.3M | 34,157 | -7.7% shares | Q2 2026 |
| GCQ FUNDS MANAGEMENT PTY LtdAsset manager | 1.0% | $7.5M | 30,749 | -2.8% shares | Q2 2026 |
| Westhampton Capital, LLCWealth manager | 1.6% | $3.9M | 16,012 | -1.2% shares | Q2 2026 |
| Reik & Co., LLCWealth manager | 0.3% | $1.2M | 5,800 | -46.3% shares | Q3 2026 |
| Silvia Mccoll Wealth Management, LLCWealth manager | 0.5% | $791K | 3,917 | -2.4% shares | Q3 2026 |
| Palatine Hill Wealth Management, LLCWealth manager | 0.5% | $682K | 2,800 | +0.0% shares | Q2 2026 |
| PineStone Asset Management Inc.Hedge fund | 0.0% | $614K | 3,039 | -11.6% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 3, Q2 2026: 7). Screen WDFC in the grand portfolio →
WDFC stock trades by members of Congress
Members of Congress have disclosed 6 WDFC trades since 2019, 1 purchase and 1 sale in the past year; the latest was Lisa C. McClain (R-MI), selling $1K–15K on Jul 22, 2025.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Aug 13, 2025 | Lisa C. McClainR-MI · House | Sale | $1K–15K | Jul 22, 2025 | +2.1% |
| Aug 13, 2025 | Lisa C. McClainR-MI · House | Buy | $1K–15K | Jul 16, 2025 | -1.3% |
| Aug 19, 2020 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Jul 30, 2020 | +16.7% |
| Aug 10, 2020 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Jul 22, 2020 | +16.8% |
| May 13, 2020 | Gilbert Ray Cisneros, Jr.D-CA · House | Buy | $1K–15K | Apr 23, 2020 | +27.0% |
| Jan 10, 2020 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Dec 12, 2019 | +14.2% |
3 members have traded WDFC: Lisa C. McClain, Gilbert Ray Cisneros, Jr., Josh Gottheimer.
WDFC questions and answers
Are insiders buying WDFC stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 WDFC insider filed 2 sales worth $117K on SEC Form 4, and no open-market purchases.
Which hedge funds own WDFC?
10 13F filers hold WDFC among their 50 largest positions, worth $157.3M combined. The biggest bets by portfolio weight are DRH Investments, Inc. (6.6%), Ophir Asset Management Pty Ltd (4.1%) and Westhampton Capital, LLC (1.6%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded WDFC?
Members of Congress have disclosed 6 WDFC trades since 2019, 1 purchase and 1 sale in the past year; the latest was Lisa C. McClain (R-MI), selling $1K–15K on Jul 22, 2025.
Who is the largest holder of WDFC?
Among 13F filers, Geneva Capital Management LLC reports the largest WDFC position, $54.3M (222,836 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is DRH Investments, Inc.'s: 6.6% of its portfolio.
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