As of May 04, 2026, the three largest insider holders of WDFC are Garry O Ridge (Ceo And Chair Of The Board, 64.72K shares), Jay Rembolt (Vp, Finance, Treasurer Cfo, 44.13K shares), Steven A Brass (President And Ceo, 33.76K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Garry O Ridge | Ceo And Chair Of The Board | 64,719 | 0 | 25 Oct, 2022 |
| Jay Rembolt | Vp, Finance, Treasurer Cfo | 44,126 | 0 | 25 Oct, 2022 |
| Steven A Brass | President And Ceo | 33,761 | 0 | 29 Oct, 2025 |
| Gregory A Sandfort | - | 19,479 | 0 | 13 Dec, 2023 |
| Eric Etchart | - | 9,349 | 0 | 12 Dec, 2025 |
| William B Noble | Group Managing Director | 8,097 | 0 | 29 Oct, 2025 |
| Daniel T Carter | - | 7,817 | 0 | 12 Dec, 2025 |
| David Pendarvis | - | 6,898 | 0 | 06 Feb, 2026 |
| Melissa Claassen | - | 6,741 | 0 | 15 Dec, 2022 |
| Richard T Clampitt | Vp, General Counsel | 6,734 | 0 | 26 Oct, 2021 |
| Geoffrey Holdsworth | Managing Director, Asia Pac. | 6,061 | 0 | 25 Oct, 2022 |
| Sara Kathleen Hyzer | Vp, Finance Cfo | 5,935 | 0 | 29 Oct, 2025 |
| Patricia Q Olsem | Division President, Americas | 0 | 5,274 | 24 Oct, 2024 |
| Patricia Q Olsem | Division President, Americas | 5,074 | 0 | 29 Oct, 2025 |
| Jeffrey G Lindeman | Vp, Chief People, Cult. Cap. | 4,900 | 0 | 28 Oct, 2025 |
| Phenix Q. Kiamilev | Vp, Gc Chief Compliance Ofcr | 0 | 4,303 | 29 Oct, 2025 |
| Phenix Q. Kiamilev | Vp, Gc Chief Compliance Ofcr | 0 | 4,248 | 28 Oct, 2025 |
| Trevor I Mihalik | - | 4,184 | 0 | 16 Dec, 2024 |
| Sara Kathleen Hyzer | Vp, Finance Cfo | 4,072 | 0 | 15 Apr, 2025 |
| Phenix Q. Kiamilev | Vp, General Counsel Corp Sec | 3,544 | 0 | 07 Oct, 2024 |
| Anne Saunders | - | 3,363 | 0 | 12 Dec, 2025 |
| Graciela Monteagudo | - | 2,873 | 0 | 12 Dec, 2025 |
| Edward O Jr Magee | - | 2,613 | 0 | 12 Dec, 2025 |
| Lara L Lee | - | 2,503 | 0 | 12 Dec, 2025 |
| Cynthia Burks | - | 1,903 | 0 | 12 Dec, 2025 |
| Rae Ann Partlo | Vp, Corporate Controller | 1,872 | 0 | 25 Oct, 2022 |
| Ken Allen Plunk | - | 515 | 0 | 19 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 18 Feb, 2026 | Ken Allen Plunk | Common Stock | A | 515 | - | 515 | D | A |
| 05 Feb, 2026 | David Pendarvis | Common Stock | A | 424 | $247.15 | 6,898 | D | P |
| 12 Dec, 2025 | Daniel T Carter | Common Stock | A | 612 | - | 7,817 | D | A |
| 12 Dec, 2025 | Anne Saunders | Common Stock | A | 612 | - | 3,363 | D | A |
| 12 Dec, 2025 | David Pendarvis | Common Stock | A | 612 | - | 6,474 | D | A |
| 12 Dec, 2025 | Graciela Monteagudo | Common Stock | A | 612 | - | 2,873 | D | A |
| 12 Dec, 2025 | Cynthia Burks | Common Stock | A | 612 | - | 1,903 | D | A |
| 12 Dec, 2025 | Edward O Jr Magee | Common Stock | A | 612 | - | 2,613 | D | A |
| 12 Dec, 2025 | Eric Etchart | Common Stock | A | 612 | - | 8,982 | D | A |
| 12 Dec, 2025 | Lara L Lee | Common Stock | A | 612 | - | 2,503 | D | A |
| 12 Dec, 2025 | Eric Etchart | Common Stock | A | 367 | - | 9,349 | D | A |
| 30 Oct, 2025 | Eric Etchart | Common Stock | A | 500 | $194.02 | 8,370 | D | P |
| 30 Oct, 2025 | David Pendarvis | Common Stock | A | 523 | $196.37 | 5,862 | D | P |
| 28 Oct, 2025 | Steven A Brass | Common Stock | A | 362 | $200.46 | 33,761 | D | P |
| 27 Oct, 2025 | Patricia Q Olsem | Common Stock | D | 335 | - | 5,475 | D | F |
| 28 Oct, 2025 | Phenix Q. Kiamilev | Common Stock | A | 55 | $200.46 | 4,303 | I | P |
| 28 Oct, 2025 | Sara Kathleen Hyzer | Common Stock | A | 200 | $200.46 | 5,935 | D | P |
| 27 Oct, 2025 | William B Noble | Common Stock | D | 258 | - | 7,741 | D | F |
| 27 Oct, 2025 | William B Noble | Common Stock | D | 316 | - | 8,097 | D | F |
| 27 Oct, 2025 | Patricia Q Olsem | Common Stock | D | 401 | - | 5,074 | D | F |