Donaldson Co Inc insider trading
Every open-market purchase and sale by Donaldson Co Inc's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.
| Date | Insider | Trade | Shares | Price | Value | 1M after | 3M after | 6M after |
|---|
Does following Donaldson Co Inc’s insiders pay?
From March 12, 2010 to September 10, 2026, 36 insiders reported 6 open-market purchases and 148 sales not made under a pre-set plan in Donaldson Co Inc. Twelve months after each purchase was reported, the shares were −1.3% against the S&P 500 on average (median −7.0%), over 6 purchases with a full year of prices; 33% beat the index. After sales, the shares moved −2.8% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on June 28, 2012 into $17,332 by November 2, 2026, +3.9% a year. It held shares 37% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $19,228 (+4.7% a year), and held throughout $72,810 (+14.9%).
| Insider | Role | Purchases | 12 months after their purchases | Beat the S&P 500 | Sales | 12 months after their sales | Latest report |
|---|---|---|---|---|---|---|---|
| Oberton Willard D | Director | 0 | — | — | 19 | −7.4% (19) | June 5, 2025 |
| Carpenter Tod E. | Chairman, President and CEO | 0 | — | — | 12 | −8.3% (10) | September 10, 2026 |
| Scalf Thomas R | President | 0 | — | — | 12 | −4.4% (12) | March 18, 2025 |
| Rajendra Ajita G | Director | 0 | — | — | 8 | −9.1% (7) | December 8, 2025 |
| Wiehoff John | Director | 0 | — | — | 8 | −4.0% (8) | June 23, 2021 |
| Perushek Mary Lynne | Vice President | 0 | — | — | 7 | +3.6% (7) | March 3, 2016 |
| Ward Jay L | Senior Vice President | 0 | — | — | 7 | +2.3% (7) | December 4, 2015 |
| Becker Amy C | Chief Legal Officer | 0 | — | — | 6 | −11.8% (6) | September 2, 2025 |
| Eugster Jack W | Director | 0 | — | — | 6 | +1.6% (6) | August 30, 2012 |
| Hoffman Michael J | Director | 0 | — | — | 5 | +5.8% (5) | June 4, 2021 |
| Miller Paul David | Director | 0 | — | — | 5 | +1.4% (5) | December 1, 2015 |
| Owens James | Director | 0 | — | — | 5 | −6.8% (4) | April 14, 2026 |
| Robinson Scott J. | Chief Financial Officer | 0 | — | — | 5 | −10.2% (5) | September 30, 2024 |
| Vermeersch Wim | Vice President | 1 | −10.8% (1) | 0% | 4 | −8.6% (4) | October 3, 2022 |
| Grundhofer John F | Director | 0 | — | — | 4 | −6.5% (4) | September 20, 2012 |
| Joppa Sandra N | Vice President | 0 | — | — | 4 | −12.2% (4) | January 7, 2015 |
| Milroy Douglas A. | Director | 3 | +8.0% (3) | 67% | 1 | −13.0% (1) | August 31, 2023 |
| Briseno Guillermo | President | 0 | — | — | 3 | −9.4% (2) | March 27, 2026 |
| Osland Melissa A. | Controller | 0 | — | — | 3 | +13.3% (3) | December 15, 2017 |
| Verhage Thomas R | Vice President | 0 | — | — | 3 | +15.7% (3) | December 14, 2010 |
| Dahlgren Andrew C | President | 0 | — | — | 2 | −9.6% (2) | September 2, 2025 |
| Dolan Janet M | Director | 0 | — | — | 2 | +18.4% (2) | November 23, 2010 |
| Linnell Norman C | Vice President | 0 | — | — | 2 | +21.9% (2) | October 15, 2010 |
| Noddle Jeffrey | Director | 0 | — | — | 2 | +2.9% (2) | March 1, 2012 |
| Rautio Trudy A. | Director | 0 | — | — | 2 | +8.8% (2) | September 2, 2025 |
| Spethmann Jeffrey E | Senior Vice President | 1 | −13.3% (1) | 0% | 1 | −6.1% (1) | March 10, 2020 |
| Timm David W | Vice President | 0 | — | — | 2 | +1.3% (2) | January 12, 2012 |
| Cook William M | Chairman, President and CEO | 0 | — | — | 1 | +20.2% (1) | April 6, 2010 |
| Hilger Christopher M. | Director | 1 | −7.3% (1) | 0% | 0 | — | April 12, 2023 |
| Keller Peter Joseph | Corporate Controller | 0 | — | — | 1 | +19.7% (1) | December 30, 2021 |
| Kramer Sheila G. | Chief Human Resources Officer | 0 | — | — | 1 | −17.7% (1) | March 18, 2024 |
| Lewis Richard Brent | Vice President | 0 | — | — | 1 | −14.8% (1) | September 17, 2018 |
| Mcmurray Charles J | Senior Vice President | 0 | — | — | 1 | −9.4% (1) | September 10, 2013 |
| Pogalz Bradley J. | Chief Financial Officer | 0 | — | — | 1 | — | December 10, 2025 |
| Schwab Lowell F | Senior Vice President | 0 | — | — | 1 | +19.0% (1) | April 14, 2010 |
| Shaw James F | Vice President | 0 | — | — | 1 | −3.5% (1) | December 3, 2012 |
When several insiders traded Donaldson Co Inc
Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Donaldson Co Inc in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 19 selling crowds, −2.2%. One company's history is too short to judge by; the test across every company is the better guide.
| Month | Crowd | 3 months on, vs S&P 500 | 6 months | 12 months |
|---|---|---|---|---|
| September 30, 2025 | 5 selling | +7.2% | +6.8% | −7.3% |
| March 31, 2025 | 3 selling | −4.9% | +3.3% | +11.7% |
| September 30, 2024 | 4 selling | −11.2% | −5.6% | −4.0% |
| December 29, 2023 | 3 selling | +3.9% | −7.0% | −20.3% |
| September 29, 2023 | 3 selling | −1.6% | +2.5% | −10.2% |
| October 31, 2022 | 3 selling | +3.5% | +7.0% | −8.9% |
| December 31, 2021 | 3 selling | −6.0% | +1.4% | +19.7% |
| June 30, 2021 | 3 selling | −7.6% | −18.5% | −12.4% |
| March 31, 2020 | 3 selling | +0.8% | −8.9% | −3.3% |
| September 28, 2018 | 3 selling | −11.7% | −10.4% | −14.5% |
| December 31, 2015 | 4 selling | +8.3% | +17.5% | +37.7% |
| January 30, 2015 | 4 selling | −2.5% | −13.8% | −20.6% |