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Impinj, Inc. (PI) institutional ownership

Latest close $136.03 Jul 21, 2026
Market cap$4.2B 52-week range SectorTechnology
Funds holding · Q1 2026
322
reported PI position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
161 buyers · 161 sellers

Impinj, Inc. (PI) price and institutional activity

Dates

Q1 2026

$0 bought by 161 investors
Alyeska Investment Group, L.P.Manufacturers Life Insurance Company, the +159 more
$0 sold by 161 investors
Invesco Ltd.Driehaus Capital Management LLC +159 more
Bought Sold Totals per quarter; hover a bar for the names.

Impinj, Inc. (PI) institutional activity · 322

Investor Type Est. change Change Δ Own Date
Invesco Ltd. · Reduced
Change −1.2M Δ Own −93.6% Date Q1 2026
Invesco Ltd. Reduced· Q1 2026 −1.2M −93.6% Q1 2026
Driehaus Capital Management LLC · Exited
Change −737K Δ Own −100.0% Date Q1 2026
Driehaus Capital Management LLC Exited· Q1 2026 −737K −100.0% Q1 2026
Alyeska Investment Group, L.P. · New
Change +735K Date Q1 2026
Alyeska Investment Group, L.P. New· Q1 2026 +735K Q1 2026
Whale Rock Capital Management LLC · Reduced
Change −482K Δ Own −54.3% Date Q1 2026
Whale Rock Capital Management LLC Reduced· Q1 2026 −482K −54.3% Q1 2026
Manufacturers Life Insurance Company, the · Added
Change +409K Date Q1 2026
Manufacturers Life Insurance Company, the Added· Q1 2026 +409K Q1 2026
T. Rowe Price Associates · Reduced
Change −387K Date Q1 2026
T. Rowe Price Associates Reduced· Q1 2026 −387K Q1 2026
Norges · Exited
Change −317K Δ Own −100.0% Date Q1 2026
Norges Exited· Q1 2026 −317K −100.0% Q1 2026
Point72 Asset Management, L.P. · New
Change +289K Date Q1 2026
Point72 Asset Management, L.P. New· Q1 2026 +289K Q1 2026
Capital World Investors · Added
Change +262K Date Q1 2026
Capital World Investors Added· Q1 2026 +262K Q1 2026
FMR LLC · Reduced
Change −220K Δ Own −4.9% Date Q1 2026
FMR LLC Reduced· Q1 2026 −220K −4.9% Q1 2026
Capital International Investors · Reduced
Change −212K Date Q1 2026
Capital International Investors Reduced· Q1 2026 −212K Q1 2026
State Street · Added
Change +208K Date Q1 2026
State Street Added· Q1 2026 +208K Q1 2026
Fiera Capital Corp · New
Change +203K Date Q1 2026
Fiera Capital Corp New· Q1 2026 +203K Q1 2026
UBS Group AG · Added
Change +189K Date Q1 2026
UBS Group AG Added· Q1 2026 +189K Q1 2026
Vanguard · Added
Change +173K Date Q1 2026
Vanguard Added· Q1 2026 +173K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 322

Famous investor activity in Impinj, Inc. (PI)

Impinj, Inc. (PI) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Diorio Chris Ph.d. · Director Gift (G) -10K
Owned 372K ΔOwn −2.6% Trade date Jul 13, 2026 Filed date Jul 14, 2026
Diorio Chris Ph.d. Director Gift (G) -10K 372K −2.6% Jul 13, 2026 Jul 14, 2026
Baker Cary · Officer 4 operations 0
Owned 4K Trade date Jun 23, 2026 Filed date Jun 24, 2026
Baker Cary Officer 4 operations 0 4K Jun 23, 2026 Jun 24, 2026
Baker Cary · Officer Tax withholding or exercise payment (F) -$53K
Price $125.22 Qty -424 Owned 90K ΔOwn −0.5% Trade date Jun 23, 2026 Filed date Jun 24, 2026
Baker Cary Officer Tax withholding or exercise payment (F) $125.22 -424 -$53K 90K −0.5% Jun 23, 2026 Jun 24, 2026
Diorio Chris Ph.d. · Director 4 operations 0
Owned 13K Trade date Jun 23, 2026 Filed date Jun 24, 2026
Diorio Chris Ph.d. Director 4 operations 0 13K Jun 23, 2026 Jun 24, 2026
Diorio Chris Ph.d. · Director Tax withholding or exercise payment (F) -$150K
Price $125.22 Qty -1K Owned 382K ΔOwn −0.3% Trade date Jun 23, 2026 Filed date Jun 24, 2026
Diorio Chris Ph.d. Director Tax withholding or exercise payment (F) $125.22 -1K -$150K 382K −0.3% Jun 23, 2026 Jun 24, 2026
Diorio Chris Ph.d. · Director Gift (G) -10K
Owned 380K Trade date Jun 15, 2026 Filed date Jun 16, 2026
Diorio Chris Ph.d. Director Gift (G) -10K 380K Jun 15, 2026 Jun 16, 2026
Sylebra Capital LLC · Director Sell −$1.5M
Price $127.36 Qty −12K Owned 783K Trade date Jun 9, 2026 Filed date Jun 10, 2026
Sylebra Capital LLC Director Sell $127.36 −12K −$1.5M 783K Jun 9, 2026 Jun 10, 2026
Sylebra Capital LLC · Director 2 operations −$5.9M
Price $125.97–$130.07 Qty −46K Owned 795K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Sylebra Capital LLC Director 2 operations $125.97–$130.07 −46K −$5.9M 795K Jun 8, 2026 Jun 10, 2026
Sylebra Capital LLC · Director 2 operations −$5.9M
Price $122.50–$128.87 Qty −47K Owned 841K Trade date Jun 5, 2026 Filed date Jun 9, 2026
Sylebra Capital LLC Director 2 operations $122.50–$128.87 −47K −$5.9M 841K Jun 5, 2026 Jun 9, 2026
Sylebra Capital LLC · Director Sell −$4.6M
Price $136.84 Qty −33K Owned 888K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Sylebra Capital LLC Director Sell $136.84 −33K −$4.6M 888K Jun 4, 2026 Jun 8, 2026
Sylebra Capital LLC · Director Sell −$879K
Price $139.17 Qty −6K Owned 921K Trade date Jun 3, 2026 Filed date Jun 4, 2026
Sylebra Capital LLC Director Sell $139.17 −6K −$879K 921K Jun 3, 2026 Jun 4, 2026
Sylebra Capital LLC · Director Sell −$5.5M
Price $142.31 Qty −39K Owned 928K Trade date Jun 2, 2026 Filed date Jun 4, 2026
Sylebra Capital LLC Director Sell $142.31 −39K −$5.5M 928K Jun 2, 2026 Jun 4, 2026
Sylebra Capital LLC · Director Sell −$1.0M
Price $144.29 Qty −7K Owned 967K Trade date Jun 1, 2026 Filed date Jun 2, 2026
Sylebra Capital LLC Director Sell $144.29 −7K −$1.0M 967K Jun 1, 2026 Jun 2, 2026
Sylebra Capital LLC · Director Sell −$7.3M
Price $150.78 Qty −49K Owned 974K Trade date May 29, 2026 Filed date Jun 2, 2026
Sylebra Capital LLC Director Sell $150.78 −49K −$7.3M 974K May 29, 2026 Jun 2, 2026
Gibson Daniel Patrick · Director 2 operations 0
Owned 0 Trade date May 28, 2026 Filed date May 29, 2026
Gibson Daniel Patrick Director 2 operations 0 0 May 28, 2026 May 29, 2026
15 of 88
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Impinj, Inc. (PI) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
FMR LLC 4.1M
% of shares outstanding 15.0% Filing date Feb 9, 2024
FMR LLC 4.1M 15.0% Feb 9, 2024
Blackrock, Inc. 3.8M
% of shares outstanding 13.5% Filing date Oct 7, 2024
Blackrock, Inc. 3.8M 13.5% Oct 7, 2024
Vanguard Group Inc 3.3M
% of shares outstanding 11.9% Filing date Nov 12, 2024
Vanguard Group Inc 3.3M 11.9% Nov 12, 2024
Vanguard Portfolio Management 2.2M
% of shares outstanding 7.2% Filing date Apr 29, 2026
Vanguard Portfolio Management 2.2M 7.2% Apr 29, 2026
BlackRock Inc. 1.9M
% of shares outstanding 7.0% Filing date Jan 26, 2024
BlackRock Inc. 1.9M 7.0% Jan 26, 2024
Gilder Gagnon Howe & Co LLC 1.3M
% of shares outstanding 4.9% Filing date Feb 14, 2023
Gilder Gagnon Howe & Co LLC 1.3M 4.9% Feb 14, 2023
Diorio Chris Ph.d. 1.3M
% of shares outstanding 4.6% Filing date Feb 14, 2024
Diorio Chris Ph.d. 1.3M 4.6% Feb 14, 2024
Capital International Investors 1.4M
% of shares outstanding 4.5% Filing date May 14, 2026
Capital International Investors 1.4M 4.5% May 14, 2026
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Impinj, Inc. (PI) ownership FAQ

Who owns PI?

322 reporting institutions disclosed PI position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.