<div id="readability-page-1"><div><p><span>Donaldson Philip E, Director of Simpson Manufacturing Co [SSD], filed a Form 144 on December 12, 2025 with the Securities and Exchange Commission proposing to sell restricted securities:</span></p><div><table><tbody><tr><td><span>Approximate Date Of Sale</span></td><td><span>12/12/25</span></td></tr><tr><td><span>Shares</span></td><td><span>2,375</span></td></tr><tr><td><span>Broker</span></td><td><span>Fidelity Brokerage Services</span></td></tr></tbody></table></div><p><span>Prior to the sale of restricted stock, owners must file a Form 144 with the SEC.  Upon submission of the filing to the SEC the owner is permitted to sell the shares, or any fraction thereof, within 90 days.</span></p><p><span>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.</span></p><p><span>Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data.</span></p><span> </span></div></div>

<p>Director Philip E. Donaldson of Simpson Manufacturing Co filed a Form 144 with the SEC to sell 2,375 restricted shares on December 12, 2025, through Fidelity Brokerage Services. Form 144 is required for selling restricted stock, allowing sales within 90 days of filing.</p>

Dir Donaldson Files To Sell 2,375 Of Simpson Manufacturing Co [SSD]