<div id="readability-page-1"><div><p><span>Sylebra Capital LLC, Shareholder of IMPINJ Inc [PI], filed a Form 144 on December 11, 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>12/11/25</span></td></tr><tr><td><span>Shares</span></td><td><span>19,858</span></td></tr><tr><td><span>Broker</span></td><td><span>Bank of America Securities</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>Sylebra Capital LLC, a shareholder of IMPINJ Inc, filed Form 144 with the SEC to sell 19,858 restricted shares on December 11, 2025. The sale will be conducted through Bank of America Securities. Form 144 is required for selling restricted stock, allowing sales within 90 days of filing. The Washington Service offers insider trading analysis and data services.</p>

Shareholder Sylebra Capital LLC Files To Sell 19,858 Of IMPINJ Inc [PI]