Impinj, Inc. (PI) has 12 known insider and institutional holders on record. The largest holder is Sylebra Capital Ltd with 4,197,352 shares. Other notable holders include SYLEBRA CAPITAL LLC and DIORIO CHRIS PH.D..
Over the last 12 months, insiders have made 53 transactions in PI stock — 1 buys (valued at RSU Award) and 28 sells (valued at $169.78M). Insider selling has exceeded buying during this period.
PI Insider Ownership
Top Holder
Sylebra Capital Ltd
4,197,352 shares
Buys (12 mo)
1
$0.00 value
Sells (12 mo)
28
$169.78M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Sylebra Capital Ltd |
10 Percent Owner |
4,197,352 |
2023-11-22 |
|
| 2 |
Sylebra Capital Llc |
Other: See Footnote |
1,317,354 |
2025-12-15 |
|
| 3 |
Diorio Chris Ph.d. |
Chief Executive Officer |
386,885 |
2026-02-23 |
|
| 4 |
Baker Cary |
Chief Financial Officer |
87,877 |
2026-02-23 |
|
| 5 |
Mecklai Hussein |
Chief Operating Officer |
75,882 |
2025-04-14 |
|
| 6 |
Dossett Jeffrey |
Chief Revenue Officer |
74,552 |
2025-02-24 |
|
| 7 |
Sanghi Steve |
Director |
40,200 |
2023-05-01 |
|
| 8 |
Sessler Gregory |
Director |
24,728 |
2023-02-22 |
|
| 9 |
Phelan Cathal G |
Chief Innovation Officer |
9,625 |
2025-05-21 |
|
| 10 |
Washington Miron |
Director |
2,040 |
2025-11-07 |
|
| 11 |
Padval Umesh |
Director |
1,729 |
2024-09-16 |
|
| 12 |
Valdez Arthur L Jr |
Director |
1,220 |
2025-10-22 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-23 |
Baker Cary |
Chief Financial Officer |
Option Exercise (Sell) |
782 |
- |
- |
| 2026-03-23 |
Diorio Chris Ph.d. |
Chief Executive Officer |
Option Exercise (Sell) |
2,594 |
- |
- |
| 2026-02-20 |
Baker Cary |
Chief Financial Officer |
Tax Withholding of RSU |
2,234 |
$127.92 |
$285.77K |
| 2026-02-20 |
Diorio Chris Ph.d. |
Chief Executive Officer |
Tax Withholding of RSU |
7,435 |
$127.92 |
$951.09K |
| 2026-02-17 |
Diorio Chris Ph.d. |
Chief Executive Officer |
Gift (Given) |
1,836 |
- |
- |
| 2025-12-23 |
Baker Cary |
Chief Financial Officer |
Option Exercise (Sell) |
781 |
- |
- |
| 2025-12-23 |
Diorio Chris Ph.d. |
Chief Executive Officer |
Option Exercise (Sell) |
2,594 |
- |
- |
| 2025-12-15 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
134,629 |
$150.36 |
$20.24M |
| 2025-12-12 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
50,573 |
$146.62 |
$7.42M |
| 2025-12-11 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
95,345 |
$152.87 |
$14.58M |
| 2025-12-10 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
84,604 |
$155.49 |
$13.16M |
| 2025-12-09 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
40 |
$160.01 |
$6.4K |
| 2025-12-08 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
2,494 |
$160.72 |
$400.84K |
| 2025-12-05 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
1,373 |
$161.04 |
$221.11K |
| 2025-12-04 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
3,167 |
$160.59 |
$508.59K |
| 2025-12-03 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
41,221 |
$167.97 |
$6.92M |
| 2025-12-02 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
41,874 |
$168.23 |
$7.04M |
| 2025-12-01 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
31,058 |
$167.02 |
$5.19M |
| 2025-11-28 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
22,297 |
$172.62 |
$3.85M |
| 2025-11-26 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
34,556 |
$171.80 |
$5.94M |
| 2025-11-25 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
46,110 |
$167.73 |
$7.73M |
| 2025-11-24 |
Sylebra Capital Llc |
Other: See Footnote |
Informative Sell |
31,952 |
$159.42 |
$5.09M |
| 2025-11-25 |
Baker Cary |
Chief Financial Officer |
Gift (Given) |
1,000 |
- |
- |
| 2025-11-21 |
Sylebra Capital Llc |
Other: See Footnotes |
Informative Sell |
3,046 |
$155.10 |
$472.43K |
| 2025-11-20 |
Sylebra Capital Llc |
Other: See Footnotes |
Informative Sell |
8,081 |
$156.33 |
$1.26M |
