Cary Baker - 23 Dec 2025 Form 4 Insider Report for IMPINJ INC (PI)

Role
CHIEF FINANCIAL OFFICER
Signature
/s/ Yukio Morikubo, Attorney in fact for Cary Baker
Issuer symbol
PI
Transactions as of
23 Dec 2025
Net transactions value
-$125,897
Form type
4
Filing time
23 Dec 2025, 18:15:20 UTC
Previous filing
26 Nov 2025
Next filing
23 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Baker Cary CHIEF FINANCIAL OFFICER 400 FAIRVIEW AVE N. SUITE 1200, SEATTLE /s/ Yukio Morikubo, Attorney in fact for Cary Baker 23 Dec 2025 0001705407

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PI Common Stock Options Exercise $0 +781 +0.97% $0.000000 81,260 23 Dec 2025 Direct
transaction PI Common Stock Options Exercise $0 +479 +0.59% $0.000000 81,739 23 Dec 2025 Direct
transaction PI Common Stock Options Exercise $0 +596 +0.73% $0.000000 82,335 23 Dec 2025 Direct
transaction PI Common Stock Tax liability $125,897 -732 -0.89% $171.99 81,603 23 Dec 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction PI Restricted Stock Units Options Exercise $0 -781 -50% $0.000000 782 23 Dec 2025 Common Stock 781 $0.000000 Direct F2, F3
transaction PI Restricted Stock Units Options Exercise $0 -479 -17% $0.000000 2,396 23 Dec 2025 Common Stock 479 $0.000000 Direct F2, F4
transaction PI Restricted Stock Units Options Exercise $0 -596 -10% $0.000000 5,370 23 Dec 2025 Common Stock 596 $0.000000 Direct F2, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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 12,500 RSUs. One-sixteenth of these vested on December 23, 2025.
F4 On March 23, 2023, the reporting person was granted 7,665 RSUs. One-sixteenth of these vested on December 23, 2025.
F5 On March 23, 2024, the reporting person was granted 9,545 RSUs. One-sixteenth of these vested on December 23, 2025.