DIORIO CHRIS PH.D. 4

4 · IMPINJ INC · Filed Mar 24, 2026

AI-generated summary of this filing

Updated Mar 24, 2026

Impinj (PI) CEO Chris DiOrio Receives RSUs; 2,218 Shares Remitted

What Happened

Chris DiOrio, CEO of Impinj (PI), had RSUs vest on March 23, 2026. A total of 5,635 RSUs converted into common shares (from prior grants). Of those, 2,218 shares were remitted to the company to satisfy tax withholding, valued at $101.17 per share for a total of $224,395. After withholding, DiOrio received a net ~3,417 shares.
The filing also reports a grant of 24,806 new RSUs on March 23, 2026. These new RSUs are subject to a multi-quarter vesting schedule described in the footnotes.

Key Details

Transaction date: March 23, 2026; Form 4 filed March 24, 2026 (timely).
Vested/conversion (derivative -> shares): 2,594 + 1,224 + 1,817 = 5,635 shares (no cash exercise price).
Tax withholding (exempt disposition to issuer under Rule 16b-3(e)): 2,218 shares surrendered at $101.17 each = $224,395.
Net shares added to holdings from vesting: 5,635 − 2,218 = ~3,417 shares.
New award: 24,806 RSUs granted (one-fourth vests March 23, 2027; thereafter 1/16th each quarter, per footnote).
Footnotes: RSUs represent rights to one share each; vesting items came from prior grants dated 2022, 2023 and 2024 (one‑sixteenth vested each on 3/23/26).
Shares owned after transaction: Not specified in the filing.

Context

These were RSU vesting and related tax-withholding transactions, not open‑market buys or sales. Surrendering shares to cover taxes is a common, administrative step and does not necessarily signal insider sentiment.
The $0.00 amounts for the derivative entries indicate RSU conversions rather than option exercises requiring cash payment. The withholding was processed as an exempt disposition to the issuer (Rule 16b‑3(e)).

Form 4

Period: 2026-03-23

DirectorCHIEF EXECUTIVE OFFICER

Transactions

Exercise/Conversion
Common Stock
2026-03-23+2,594→ 389,479 total
Exercise/Conversion
Common Stock
2026-03-23+1,224→ 390,703 total
Exercise/Conversion
Common Stock
2026-03-23+1,817→ 392,520 total
Tax Payment
Common Stock
[F1]
2026-03-23$101.17/sh−2,218$224,395→ 390,302 total
Exercise/Conversion
Restricted Stock Units
[F2][F3]
2026-03-23−2,594→ 0 total
Exercise: $0.00→ Common Stock (2,594 underlying)
Exercise/Conversion
Restricted Stock Units
[F2][F4]
2026-03-23−1,224→ 4,895 total
Exercise: $0.00→ Common Stock (1,224 underlying)
Exercise/Conversion
Restricted Stock Units
[F2][F5]
2026-03-23−1,817→ 14,538 total
Exercise: $0.00→ Common Stock (1,817 underlying)
Award
Restricted Stock Units
[F2][F6]
2026-03-23+24,806→ 24,806 total
Exercise: $0.00→ Common Stock (24,806 underlying)

Holdings

Footnotes (6)

[F1]In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the vesting of restricted stock units, or RSUs.
[F2]Each RSU represents a contingent right to receive one share of Impinj common stock.
[F3]On March 23, 2022, the reporting person was granted 41,500 RSUs. One-sixteenth of these vested on March 23, 2026.
[F4]On March 23, 2023, the reporting person was granted 19,580 RSUs. One-sixteenth of these vested on March 23, 2026.
[F5]On March 23, 2024, the reporting person was granted 29,075 RSUs. One-sixteenth of these vested on March 23, 2026.
[F6]One-fourth of the shares subject to the grant shall vest on March 23, 2027, and 1/16th of the shares subject to the grant shall vest each quarter thereafter, subject to the reporting person's continued service to the Issuer through such date.

Signature

/s/ Yukio Morikubo, Attorney in fact for Chris Diorio|2026-03-24

1 file