<div id="readability-page-1"><div><p><span>Vermillion Teresa M, Officer and Treasurer of Olin Corp [OLN], filed a Form 144 on November 24, 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>11/24/25</span></td></tr><tr><td><span>Shares</span></td><td><span>4,500</span></td></tr><tr><td><span>Broker</span></td><td><span>Computershare</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>Vermillion Teresa M, Officer and Treasurer of Olin Corp, filed a Form 144 with the SEC to sell 4,500 shares of restricted stock on November 24, 2025. This filing allows the sale within 90 days. The Washington Service provides insider trading analysis and data services.</p>

Treas Vermillion Files To Sell 4,500 Of Olin Corp [OLN]