1 unchanged sentence
Securities Trading Plans of Directors and Executive Officers
−Removed: During our last fiscal quarter, no director or officer, as defined in Rule 16a-1(f), adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Item 408 of Regulation S-K.
+Added: During our last fiscal quarter, no director or officer, as defined in Rule 16a-1(f), adopted or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Item 408 of Regulation S-K, except as follows:
+Added: Name and Title
+Added: Character of Trading Arrangement (1)
+Added: Date Terminated
+Added: Aggregate Number of Shares of Common Stock to be Purchased or Sold Pursuant to Trading Arrangement (3)
+Added: Chris Diorio , Ph.D., Director, Chief Executive Officer and Vice Chair
+Added: Rule 10b5-1 Trading Arrangement
+Added: February 23, 2026
+Added: February 5, 2027
+Added: (1) Except as indicated by footnote, each trading arrangement marked as a “Rule 10b5-1 Trading Arrangement” is intended to satisfy the affirmative defense of Rule 10b5-1(c), as amended, or the Rule.
+Added: (2) Except as indicated by footnote, each trading arrangement permits transactions through and including the earlier of (a) the execution or expiration of all trades specified under the trading arrangement or (b) the date listed in the table.
+Added: Each trading arrangement marked as a “Rule 10b5-1 Trading Arrangement” only permits transactions upon expiration of the applicable mandatory cooling-off period under the Rule.
+Added: (3) Aggregate number of shares of common stock to be purchased or sold pursuant to the trading arrangement includes 30,000 shares to trade.
+Added: In addition, included within the terms of the 10b5-1 Trading Plan, 50,000 shares may be donated and 180,000 shares may be swapped.
Incorporation by Reference
5 unchanged sentences
adopted as of February 23, 2023
−Removed: Indenture, dated as of September 8, 2025, between Impinj, Inc.
−Removed: Bank Trust Company, National Association, as trustee
−Removed: Form of 0% Convertible Senior Notes due 2029 (included in Exhibit 4.1)
−Removed: Form of Capped Call Transaction Confirmation
+Added: Outside Director Compensation Policy (as amended April 15, 2026)
Certification of Principal Executive Officer Required Under Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended
7 unchanged sentences
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
−Removed: October 29, 2025
+Added: April 29, 2026
/s/ Cary Baker
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.