Impinj PI Insider Ownership

NASDAQ PI

$185.19 -4.42 (-2.33%)

At close: Oct 5, 2026 · 4:00 PM EDT

Insider Holdings by Owner

5.69Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

9.25%

▼-0.116% pp QoQ

Shares Held by Insiders

2.82Mn

filed for Sep 2026

▼-1.24% QoQ

Shares Outstanding

30.48Mn

30,480,000 shares

Direct Holdings

672.20K

Indirect: 2.15Mn

Net Shares Traded (QoQ)

-35.30K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 5, 2026

Across the past 12 months, open-market trades by Impinj insiders were all sales, totaling $164.57 million (1.08Mn shares).

Impinj's open-market sales in the past 12 months came from 3 insiders; no insider bought.
Sylebra Capital LLC (Director) was PI's largest open-market seller in the past 12 months, with $162.47 million of sales (1.07Mn shares); the latest was on June 9, 2026.
Cary Baker (Chief Financial Officer) made the most recent open-market trade by an insider of Impinj, a sale of 8.89K shares for $1.65 million on September 21, 2026.
Beyond open-market trades, insiders at Impinj received 30.24K shares in stock awards, acquired 58.75K shares through option exercises and conversions, gave up 20.97K shares to cover taxes or exercise prices and gave away 49.84K shares as gifts in the last 12 months.
Per Business Quant, PI insiders together hold 2.82Mn shares based on their latest Form 4 filings, or 9.25% of the 30.48Mn shares outstanding; that total is down 1.24% from 2.86Mn shares at the end of Q2 2026.
Of the 2.82Mn shares held by Impinj insiders, 672.2K shares (23.84%) are held directly and 2.15Mn shares (76.16%) indirectly, through trusts, partnerships, family members and other entities.
PI's insider total is spread across 11 insiders who have filed a Form 4 in the past two years.
PI's three largest insider shareholders, per their latest Form 4 filings, are Sylebra Capital LLC (Director, 1.93Mn shares), Chris Diorio (Chief Executive Officer, 555.63K shares) and Cary Baker (Chief Financial Officer, 81.04K shares).
Sylebra Capital LLC holds 68.31% of the combined insider position in Impinj.
In the past year, 9 insiders of Impinj submitted 54 Form 4 filings reporting trades, awards or other transactions.
Insider figures for PI include Form 4 filings through September 24, 2026.

Form 4 Holdings

Insiders Holding PI

Insiders 15

Shares held 5.69Mn

Of outstanding 18.68%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Capital Ltd Sylebra	TenPercentOwner	0	4,197,352	4,197,352	73.7%	22 Nov, 2023
2	Capital Llc Sylebra	Director	0	775,943	775,943	13.6%	10 Jun, 2026
3	Chris Ph.D. Diorio	Chief Executive Officer	356,265	0	356,265	6.3%	24 Sep, 2026
4	Cary Baker	Chief Financial Officer	81,039	0	81,039	1.4%	24 Sep, 2026
5	Hussein Mecklai	Chief Operating Officer	75,882	0	75,882	1.3%	14 Apr, 2025
6	Jeffrey Dossett	Chief Revenue Officer	71,886	0	71,886	1.3%	24 Feb, 2025
7	Gregory Sessler	Director	28,257	0	28,257	0.5%	12 Jun, 2023
8	Oppen Peter H Van	Director	24,266	0	24,266	0.4%	13 Jun, 2022
9	Daniel Patrick Gibson	Director	23,010	0	23,010	0.4%	29 May, 2026
10	Theresa Wise	Director	14,850	0	14,850	0.3%	13 Jun, 2022
11	Steve Sanghi	Director	13,274	0	13,274	0.2%	29 May, 2026
12	Meera Rao	Director	11,322	0	11,322	0.2%	29 May, 2026
13	Cathal G Phelan	Chief Innovation Officer	10,431	0	10,431	0.2%	21 May, 2025
14	Umesh Padval	Director	6,654	0	6,654	0.1%	29 May, 2026
15	Miron Washington	Director	4,354	0	4,354	0.1%	16 Sep, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

2,075 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
23 Sep, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Acquired M	1,224	$0.00	$0	355,645	Direct
23 Sep, 2026	Cary Baker	Chief Financial Officer	Acquired M	479	$0.00	$0	80,867	Direct
23 Sep, 2026	Cary Baker	Chief Financial Officer	Acquired M	596	$0.00	$0	81,463	Direct
23 Sep, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Acquired M	1,817	$0.00	$0	357,462	Direct
23 Sep, 2026	Cary Baker	Chief Financial Officer	Disposed F	424	$177.20	$75.13K	81,039	Direct
23 Sep, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed F	1,197	$177.20	$212.11K	356,265	Direct
23 Sep, 2026	Cary Baker	Chief Financial Officer	Disposed M	479	$0.00	$0	959	Direct
23 Sep, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed M	1,224	$0.00	$0	2,448	Direct
23 Sep, 2026	Cary Baker	Chief Financial Officer	Disposed M	596	$0.00	$0	3,580	Direct
23 Sep, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed M	1,817	$0.00	$0	10,904	Direct
21 Sep, 2026	Cary Baker	Chief Financial Officer	Disposed S	8,892	$185.00	$1.65Mn	80,388	Direct
20 Aug, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Acquired M	3,753	$0.00	$0	365,898	Direct
20 Aug, 2026	Cary Baker	Chief Financial Officer	Acquired M	1,739	$0.00	$0	89,965	Direct
20 Aug, 2026	Cary Baker	Chief Financial Officer	Disposed F	685	$159.73	$109.42K	89,280	Direct
20 Aug, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed F	1,477	$159.73	$235.92K	364,421	Direct
20 Aug, 2026	Cary Baker	Chief Financial Officer	Disposed M	1,739	$0.00	$0	5,219	Direct
20 Aug, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed M	3,753	$0.00	$0	11,262	Direct
17 Aug, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed G	10,000	$0.00	$0	362,145	Direct
10 Aug, 2026	Cary Baker	Chief Financial Officer	Disposed S	1,429	$185.00	$264.37K	88,226	Direct
13 Jul, 2026	Chris Ph.D. Diorio	Chief Executive Officer	Disposed G	10,000	$0.00	$0	372,145	Direct

Showing 1 to 20 of 2,075 transactions