<div id="readability-page-1"><div>Thurmond Mark C Chief Executive Officer of Tenable Holdings Inc [TENB] filed a Form 4 on November 25, 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>11/24/25</td><td>Exercise</td><td>16,730</td><td>$0.00</td><td>N/A</td></tr><tr><td>11/24/25</td><td>Surrender(1)</td><td>8,092</td><td>$25.68</td><td>$207,803</td></tr></tbody></table></div>Ending Holdings: 113,639 - Direct<ul><li>(1)</li><li>Surrender of shares back to company to pay option exercise cost and/or resulting tax liability.</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>

TENB

CEO Thurmond Mark C of Tenable Holdings Inc filed a Form 4 with the SEC, disclosing changes in ownership. On November 24, 2025, he exercised 16,730 shares and surrendered 8,092 shares at $25.68 each to cover option exercise costs and/or tax liabilities. His ending direct holdings are 113,639 shares.

CEO Thurmond Acquires 8,638 Of Tenable Holdings Inc [TENB]