<div id="readability-page-1"><div>Le-Quoc Alexis Officer and Director of Datadog Inc [DDOG] filed a Form 4 on December 9, 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>12/5/25</td><td>Gift</td><td>123,000</td><td>$0.00</td><td>N/A</td></tr><tr><td>12/8/25</td><td>Planned Sale(1)</td><td>53,912</td><td>$154.05</td><td>$8,305,198</td></tr></tbody></table></div>Ending Holdings: 295,617 (295,448 - Direct, 169 - Indirect)<ul><li>(1)</li><li>Executed pursuant to a prearranged trading plan (10b5-1).</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>

DDOG

Le-Quoc Alexis, Officer and Director of Datadog Inc, sold 53,912 shares worth $8.3M on December 8, 2025, under a prearranged trading plan (10b5-1).

Officer/Dir Le-Quoc Sells 53,912 ($8.3M) Of Datadog Inc [DDOG]