WD 40 (WDFC) stock: insider trades, news & valuation
Strong buyingShare price and insider trades
WD 40 insider trading at a glance (Oct 9, 2026): in the past 12 months, 6 insiders bought $628K and 1 sold $117K of WDFC stock on the open market, including a cluster buy that began Oct 27, 2025.
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WDFC insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $117K | 2 |
| Q2 2026 | — | 0 | — | 0 |
| Q1 2026 | $105K | 1 | — | 0 |
| Q4 2025 | $523K | 6 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 6 WD 40 CO insiders reported open-market purchases totaling $628K, while 1 insider reported sales totaling $117K. The most recent cluster buy began on Oct 27, 2025, when 6 insiders bought a combined $523K. Among insiders with enough purchase history to measure, David Pendarvis (Director) has the highest Insider Score at 44. 0 of 2 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 14SEC | Patricia Q OlsemPresident | Sell | 2004,574 held (−4%) | $234.72 | $47K | -13.8% | — |
| Aug 12SEC | Patricia Q OlsemPresident | Sell | 3004,774 held (−6%) | $233.73 | $70K | -13.5% | — |
| Feb 6SEC | David PendarvisDirector | Buy | 4246,898 held (+7%) | $247.15 | $105K | -18.2% | 44 |
| Oct 30SEC | David PendarvisDirector | Buy | 5235,862 held (+10%) | $196.37 | $103K | +3.0% | 44 |
| Oct 30SEC | Eric EtchartDirector | Buy | 5008,370 held (+6%) | $194.02 | $97K | +4.3% | — |
| Oct 29SEC | Steven A BrassCEO, President | Buy | 36233,761 held (+1%) | $200.46 | $73K | +0.9% | — |
| Oct 29SEC | Sara Kathleen HyzerCFO | Buy | 2005,935 held (+3%) | $200.46 | $40K | +0.9% | — |
| Oct 29SEC | Phenix Q. KiamilevVp, Gc & Chief Compliance Ofcr | Buy | 554,303 held (+1%) | $200.46 | $11K | +0.9% | — |
| Oct 27SEC | Daniel T CarterDirector | Buy | 1,0007,205 held (+16%) | $199.37 | $199K | +1.5% | — |
Insiders at WD 40 CO
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| David PendarvisDirector | $207K | — | Feb 6, 2026 | 44 |
| Daniel T CarterDirector | $199K | — | Oct 27, 2025 | — |
| Eric EtchartDirector | $97K | — | Oct 30, 2025 | — |
| Steven A BrassCEO, President | $73K | — | Oct 29, 2025 | — |
| Sara Kathleen HyzerCFO | $40K | — | Oct 29, 2025 | — |
| Patricia Q OlsemPresident | — | $117K | Aug 14, 2026 | — |
| Phenix Q. KiamilevVp, Gc & Chief Compliance Ofcr | $11K | — | Oct 29, 2025 | — |
WDFC stock: common questions
Are WD 40 CO insiders buying WDFC stock?
In the past 12 months, 6 insiders reported open-market purchases of WDFC worth $628K. The latest was Director David Pendarvis bought $105K of WDFC at $247.15.
Are WD 40 CO insiders selling WDFC stock?
1 insiders reported sales worth $117K over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is WDFC's 52-week range?
Over the past year WDFC has traded between $184.92 and $263.86. It last closed at $202.29 on Oct 9, 2026.