<div id="readability-page-1"><div><p><span>Jaen Juan C President of Arcus Biosciences Inc [RCUS] filed a Form 4 on December 18, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:</span></p><div><table><tbody><tr><td><span>Date</span></td><td><span>12/16/25-12/17/25</span></td></tr><tr><td><span>Transaction</span></td><td><span>Planned Surrender(1)(2)</span></td></tr><tr><td><span>Shares</span></td><td><span>21,208</span></td></tr><tr><td><span>Price</span></td><td><span>$22.01</span></td></tr><tr><td><span>Value</span></td><td><span>$466,869</span></td></tr></tbody></table></div><p><span>Ending Holdings: 1,300,075 (346,012 - Direct, 954,063 - Indirect)</span></p><div><table><tbody><tr><td><span>(1)</span></td><td><span>Surrender of shares back to company to pay option exercise cost and/or resulting tax liability.</span></td></tr><tr><td><span>(2)</span></td><td><span>Executed pursuant to a prearranged trading plan (10b5-1).</span></td></tr></tbody></table></div><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>

RCUS

<p>Jaen Juan C, President of Arcus Biosciences Inc, surrendered 21,208 shares back to the company to cover option exercise costs and tax liabilities, as per a prearranged trading plan (10b5-1). The transaction was disclosed in a Form 4 filed with the SEC on December 18, 2025. Ending holdings are 1,300,075 shares.</p>

Pres Jaen Surrenders 21,208 Of Arcus Biosciences Inc [RCUS]