<div id="readability-page-1"><div><p><span>Sylebra Capital LLC, Shareholder of IMPINJ Inc [PI], filed a Form 144 on December 4, 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>12/4/25</span></td></tr><tr><td><span>Shares</span></td><td><span>900</span></td></tr><tr><td><span>Broker</span></td><td><span>JP Morgan 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 a Form 144 with the SEC to sell 900 restricted shares on December 4, 2025. The sale will be brokered by JP Morgan Securities. Filing Form 144 is required before selling restricted stock, allowing the sale within 90 days of submission.</p>

Shareholder Sylebra Capital LLC Files To Sell 900 Of IMPINJ Inc [PI]