<div id="readability-page-1"><div>Pogalz Bradley J Chief Financial Officer of Donaldson Co Inc [DCI] filed a Form 4 on December 10, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:<div><table><tbody><tr><th>Date</th><th>Transaction</th><th>Shares</th><th>Price</th><th>Value</th></tr><tr><td>12/9/25</td><td>Exercise(1)</td><td>1,000</td><td>$28.00</td><td>$28,000</td></tr><tr><td>12/9/25</td><td>Sale</td><td>566</td><td>$91.57</td><td>$51,829</td></tr></tbody></table></div>Ending Holdings: 1,284 (434 - Direct, 850 - Indirect)<ul><li>(1)</li><li>Exercised 8 days before expiration date.</li></ul>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data. </div></div>

Pogalz Bradley J, CFO of Donaldson Co Inc [DCI], filed a Form 4 with the SEC on December 10, 2025, disclosing the exercise of 1,000 shares at $28.00 and the sale of 566 shares at $91.57, totaling $51,829. Ending holdings are 1,284 shares (434 direct, 850 indirect).

CFO Pogalz Sells 566 ($51.8K) Of Donaldson Co Inc [DCI]