IMPINJ INC (PI) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-14

IMPINJ INC (PI) has filed 18 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 2 Form 8-K material event filings were reported by PI in the last 90 days. InsiderAlpha tracks every PI SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About IMPINJ INC (PI)

SEC CIK	0001114995

90-Day SEC Filing Activity

Form 4 filings (90d)	18
Form 8-K filings (90d)	2
Latest Form 4 filing	2026-07-14

Recent PI Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-07-13	DIORIO CHRIS PH.D.	CHIEF EXECUTIVE OFFICER	G — Bona-fide gift [10b5-1]	10.0K	$0.00	—	SEC
2026-06-23	Baker Cary	CHIEF FINANCIAL OFFICER	M — Option exercise	479	$0.00	—	SEC
2026-06-23	DIORIO CHRIS PH.D.	CHIEF EXECUTIVE OFFICER	F — Tax withholding / forfeiture	1.2K	$125.22	$150K	SEC
2026-06-23	Baker Cary	CHIEF FINANCIAL OFFICER	F — Tax withholding / forfeiture	424	$125.22	$53K	SEC
2026-06-23	DIORIO CHRIS PH.D.	CHIEF EXECUTIVE OFFICER	M — Option exercise	1.8K	$0.00	—	SEC
2026-06-23	DIORIO CHRIS PH.D.	CHIEF EXECUTIVE OFFICER	M — Option exercise	1.2K	$0.00	—	SEC
2026-06-23	Baker Cary	CHIEF FINANCIAL OFFICER	M — Option exercise	597	$0.00	—	SEC
2026-06-15	DIORIO CHRIS PH.D.	CHIEF EXECUTIVE OFFICER	G — Bona-fide gift	10.0K	$0.00	—	SEC
2026-06-09	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	12.1K	$127.36	$1.54M	SEC
2026-06-08	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	33.0K	$130.07	$4.29M	SEC
2026-06-08	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	12.5K	$125.97	$1.58M	SEC
2026-06-05	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	11.6K	$128.87	$1.50M	SEC
2026-06-05	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	35.9K	$122.50	$4.39M	SEC
2026-06-04	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	33.4K	$136.84	$4.57M	SEC
2026-06-03	SYLEBRA CAPITAL LLC	Director	S — Open-market sale	6.3K	$139.17	$879K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for IMPINJ INC (PI). Updated in real time as new filings are submitted to the SEC.

Most-Active PI Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
SYLEBRA CAPITAL LLC	16	$49.44M
DIORIO CHRIS PH.D.	9	$56.55M
Baker Cary	5	$53K
WASHINGTON MIRON	3	—
PADVAL UMESH	3	—

Recent PI Form 8-K Material Events

2026-05-29 — Item 5.07 [SEC]
2026-04-29 — Item 2.02, 9.01 [SEC]
2026-03-16 — Item 8.01, 9.01 · Financing · neutral [SEC]
Impinj repurchased approximately $40.2 million in aggregate principal amount of its 1.125% Convertible Notes due 2027 for a total cost of $47.2 million (including accrued interest) between March 11-13, 2026. Following the repurchases, $57.3 million of the Notes remain outstanding

Recent Insider Filings

2026-07-14 — DIORIO CHRIS PH.D. (CHIEF EXECUTIVE OFFICER)
2026-06-24 — Baker Cary (CHIEF FINANCIAL OFFICER)
2026-06-24 — DIORIO CHRIS PH.D. (CHIEF EXECUTIVE OFFICER)
2026-06-16 — DIORIO CHRIS PH.D. (CHIEF EXECUTIVE OFFICER)
2026-06-10 — SYLEBRA CAPITAL LLC (Director)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in PI insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

PI Insider Trading — FAQ

What is the latest insider trade for PI?: IMPINJ INC (PI) had 18 insider filings in the last 90 days, with the most recent on 2026-07-14. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying PI stock?: 0 insider purchases of PI were filed in the last 90 days.
How many insiders are selling PI stock?: 0 insider sales of PI were filed in the last 90 days.
Where can I see PI SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every PI SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

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