Valdez Arthur L Jr 4

What Happened
Arthur L. Valdez Jr, a director of Impinj, was granted 1,896 restricted stock units (RSUs) on May 28, 2026. The grant is reported as a derivative award (code A) with a per-unit price of $0.00 (no immediate cash exchanged). The RSUs represent a contingent right to receive one share of Impinj common stock upon vesting.

Key Details

• Transaction date: 2026-05-28; filing date: 2026-05-29 (timely filing).
• Award: 1,896 RSUs granted at $0.00 per unit (derivative award).
• Vesting: RSUs will fully vest on May 28, 2027 (see footnote).
• Footnotes: F1 — each RSU equals a right to one share; F2 — full vesting date is May 28, 2027.
• Shares owned after transaction: Not disclosed in this Form 4.

Context
RSU grants are typically compensation awards and do not represent an immediate purchase or sale of shares; value is realized only if and when the RSUs vest and convert into stock (and depending on any applicable tax withholding). This report documents the grant itself rather than any open-market trading activity.