<div id="readability-page-1"><div><p>Certain Options of The Southern Company are subject to a Lock-Up Agreement Ending on 18-DEC-2025. These Options will be under lockup for 45 days starting from 3-NOV-2025 to 18-DEC-2025.</p><p>Details:<br/> The Company and its executive officers and directors have agreed not to, without the prior written consent of the Representatives, for a period of 45 days from the date of this Prospectus Supplement, directly or indirectly, (i) offer, issue, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend or otherwise transfer or dispose of any Corporate Units, Purchase Contracts or shares of the Company?s common stock or any security convertible into or exercisable or exchangeable for Corporate Units, Purchase Contracts or common stock</p></div></div>

<p>The Southern Company has entered into a lock-up agreement for certain options, effective from November 3, 2025, to December 18, 2025. During this 45-day period, the company and its executives cannot offer, sell, or transfer any corporate units, purchase contracts, or common stock without prior consent.</p>