investing-statsSEC Form 4 insider transactions

PI · IMPINJ INC

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Electronic Components, NEC · Listed on Nasdaq

Open-market insider flow over 30d · 90d · 180d · 365d · filter in table · CSV · JSON

Open-market trades1
Distinct insiders1
Bought$0
Sold$264.4K
Net flow$-264.4K

Recent filings

How to read this

Filed
Date the Form 4 was filed with the SEC. Insiders must file within 2 business days of the trade.
Ticker
The issuer's stock symbol. Select it to open that company's insider-activity page.
Issuer
The company whose shares were traded.
Sector
The issuer's industry (SEC SIC classification). Select a value to filter to that sector.
Insider
The reporting person: an officer, director, or 10% owner. Select a name to see all of their trades.
Role
The insider's relationship to the company: director, officer, or 10% owner.
Code
SEC transaction code describing the kind of transaction. Full official definitions are under “Transaction codes” below. A dot marks an open-market trade (P/S), the highest-conviction signal.
Side
Direction of the trade, from the filing's Acquired (A) ▲ / Disposed of (D) ▼ field: a buy or a sell.
10b5-1
Trade made under a pre-arranged Rule 10b5-1 plan: scheduled in advance, not a discretionary decision (generally lower signal).
Shares
Number of shares in this transaction.
Price
Reported price per share. Blank for grants, gifts, and other trades with no stated price.
Value
Transaction value = shares × price. Left blank for grants, option exercises, gifts, and conversions, which have no cash price (see Own Δ for their impact).
Owned after
Form 4 column “Amount of Securities Beneficially Owned Following Reported Transaction(s)”: shares the insider held (directly or indirectly) immediately after this trade.
Own Δ
How much this trade changed the insider's own holding versus what they held just before it (not a share of the company). +45% grew it by 45%, 2.0× more than doubled it, −100% sold the entire stake, “new” built a position from nothing.
Co. Δ
Change in the insider's stake as a share of the whole company from this trade (transaction shares ÷ shares outstanding). The “(now …)” figure is their resulting total stake. Based on the latest reported shares outstanding; blank when unavailable.
D/I
Form 4 column “Ownership Form: Direct (D) or Indirect (I)”. Indirect holdings (for example, through a trust, fund, or family member) are detailed in the filing's “Nature of Indirect Beneficial Ownership.”
Lag
Days from the trade date to the filing date (Form 4 is due within 2 business days).

Transaction codes

Verbatim from the SEC's General Instructions for Forms 3, 4 and 5.

P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award or other acquisition pursuant to Rule 16b-3(d)
D
Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)
F
Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3
M
Exercise or conversion of derivative security exempted pursuant to Rule 16b-3
G
Bona fide gift
C
Conversion of derivative security
X
Exercise of in-the-money or at-the-money derivative security
J
Other acquisition or disposition (describe transaction)
Recent Form 4 filings for PI
FiledDate the Form 4 was filed with the SEC (due within 2 business days of the trade).InsiderRoleCodeSEC transaction code describing the kind of transaction. See “How to read this” above for the official SEC definition of each code. The dot marks an open-market trade (P/S).SideDirection of the trade: a buy (acquired ▲) or a sell (disposed ▼).SharesNumber of shares in this transaction.PriceReported price per share. Blank for trades with no stated price.ValueTransaction value = shares × price. Left blank for grants, option exercises, gifts, and conversions, which have no cash price (see Own Δ).Owned afterShares the insider held (directly or indirectly) immediately after this trade.Own ΔHow much this trade changed the insider's own holding versus what they held just before it (not a share of the company). +45% grew it by 45%, 2.0× more than doubled it, −100% sold the entire stake, “new” built a position from nothing.Co. ΔChange in the insider's stake as a share of the whole company from this trade (transaction shares ÷ shares outstanding). The “(now …)” figure is their resulting total stake in the company. Based on the latest reported shares outstanding; blank when unavailable.Link to SEC filing
2026-08-21DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M sell3,753 3,753 Common Stock11,262filing
2026-08-21DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)F sell1,4770$159.73$235.9K364,421−0.4%−<0.01% (now 1.2%)filing
2026-08-21DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M buy3,7530365,898+1%+0.01% (now 1.2%)filing
2026-08-21Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M sell1,739 1,739 Common Stock5,219filing
2026-08-21Baker CaryOfficer (CHIEF FINANCIAL OFFICER)F sell6850$159.73$109.4K89,280−0.8%−<0.01% (now 0.29%)filing
2026-08-21Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M buy1,739089,965+2%+<0.01% (now 0.29%)filing
2026-08-18DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)G sell10b5-110,0000362,145−3%−0.03% (now 1.2%)filing
2026-08-12Baker CaryOfficer (CHIEF FINANCIAL OFFICER)S sell10b5-11,4290$185.00$264.4K88,226−2%−<0.01% (now 0.29%)filing
2026-07-14DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)G sell10b5-110,0000372,145−3%−0.03% (now 1.2%)filing
2026-06-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M sell1,817 1,817 Common Stock12,721filing
2026-06-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M sell1,223 1,223 Common Stock3,672filing
2026-06-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)F sell1,1970$125.22$149.9K382,145−0.3%−<0.01% (now 1.3%)filing
2026-06-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M buy1,8170383,342+0.5%+<0.01% (now 1.3%)filing
2026-06-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M buy1,2230381,525+0.3%+<0.01% (now 1.2%)filing
2026-06-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M sell597 597 Common Stock4,176filing
2026-06-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M sell479 479 Common Stock1,438filing
2026-06-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)F sell4240$125.22$53.1K89,655−0.5%−<0.01% (now 0.29%)filing
2026-06-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M buy597090,079+0.7%+<0.01% (now 0.29%)filing
2026-06-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M buy479089,482+0.5%+<0.01% (now 0.29%)filing
2026-06-16DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)G sell10b5-110,0000380,302−3%−0.03% (now 1.2%)filing
2026-06-10SYLEBRA CAPITAL LLCDirectorS sell12,1050$127.36$1.54M782,943−2%−0.04% (now 2.6%)filing
2026-06-10SYLEBRA CAPITAL LLCDirectorS sell33,0000$130.07$4.29M795,048−4%−0.11% (now 2.6%)filing
2026-06-10SYLEBRA CAPITAL LLCDirectorS sell12,5280$125.97$1.58M828,048−1%−0.04% (now 2.7%)filing
2026-06-09SYLEBRA CAPITAL LLCDirectorS sell35,8770$122.50$4.39M840,576−4%−0.12% (now 2.8%)filing
2026-06-09SYLEBRA CAPITAL LLCDirectorS sell11,6020$128.87$1.50M876,453−1%−0.04% (now 2.9%)filing
2026-06-09DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)J sell10b5-1180,0000$156.68$28.20M390,302−32%−0.59% (now 1.3%)filing
2026-06-09DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)J buy10b5-1180,0000$156.68$28.20M570,302+46%+0.59% (now 1.9%)filing
2026-06-08SYLEBRA CAPITAL LLCDirectorS sell33,4120$136.84$4.57M888,055−4%−0.11% (now 2.9%)filing
2026-06-04SYLEBRA CAPITAL LLCDirectorS sell6,3130$139.17$878.6K921,467−0.7%−0.02% (now 3.0%)filing
2026-06-04SYLEBRA CAPITAL LLCDirectorS sell38,7240$142.31$5.51M927,780−4%−0.13% (now 3.0%)filing
2026-06-02SYLEBRA CAPITAL LLCDirectorS sell7,1630$144.29$1.03M966,504−0.7%−0.02% (now 3.2%)filing
2026-06-02SYLEBRA CAPITAL LLCDirectorS sell48,5040$150.78$7.31M973,667−5%−0.16% (now 3.2%)filing
2026-05-29WASHINGTON MIRONDirectorA buy1,896 1,896 Common Stock1,896filing
2026-05-29WASHINGTON MIRONDirectorM sell3,114 3,114 Common Stock0filing
2026-05-29WASHINGTON MIRONDirectorM buy3,11405,1542.5×+0.01% (now 0.02%)filing
2026-05-29Valdez Arthur L JrDirectorA buy1,896 1,896 Common Stock1,896filing
2026-05-29Rao MeeraDirectorA buy1,896 1,896 Common Stock1,896filing
2026-05-29Rao MeeraDirectorM sell3,114 3,114 Common Stock0filing
2026-05-29Rao MeeraDirectorM buy3,114011,322+38%+0.01% (now 0.04%)filing
2026-05-29PADVAL UMESHDirectorA buy1,896 1,896 Common Stock1,896filing
2026-05-29PADVAL UMESHDirectorM sell3,114 3,114 Common Stock0filing
2026-05-29PADVAL UMESHDirectorM buy3,11406,654+88%+0.01% (now 0.02%)filing
2026-05-29Sanghi SteveDirectorA buy2,085 2,085 Common Stock2,085filing
2026-05-29Sanghi SteveDirectorM sell3,425 3,425 Common Stock0filing
2026-05-29Sanghi SteveDirectorM buy3,425013,274+35%+0.01% (now 0.04%)filing
2026-05-29Gibson Daniel PatrickDirectorA buy1,896 1,896 Common Stock1,896filing
2026-05-29Gibson Daniel PatrickDirectorM sell3,114 3,114 Common Stock0filing
2026-05-29Gibson Daniel PatrickDirectorM buy3,114023,010+16%+0.01% (now 0.08%)filing
2026-05-12SYLEBRA CAPITAL LLCDirectorS buy12,7060$154.46$1.96M1,022,171+1%+0.04% (now 3.3%)filing
2026-05-12SYLEBRA CAPITAL LLCDirectorS buy24,1260$154.46$3.73M1,034,877+2%+0.08% (now 3.4%)filing
2026-05-12SYLEBRA CAPITAL LLCDirectorS buy9,5220$149.97$1.43M1,059,003+0.9%+0.03% (now 3.5%)filing
2026-05-12SYLEBRA CAPITAL LLCDirectorS buy1,5600$151.32$236.1K1,068,525+0.1%+<0.01% (now 3.5%)filing
2026-05-12SYLEBRA CAPITAL LLCDirectorS sell25,8960$152.73$3.96M1,070,085−2%−0.08% (now 3.5%)filing
2026-05-11SYLEBRA CAPITAL LLCDirectorS sell36,1710$152.73$5.52M1,132,152−3%−0.12% (now 3.7%)filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)A buy24,806 24,806 Common Stock24,806filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M sell1,817 1,817 Common Stock14,538filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M sell1,224 1,224 Common Stock4,895filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M sell2,594 2,594 Common Stock0filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)F sell2,2180$101.17$224.4K390,302−0.6%−<0.01% (now 1.3%)filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M buy1,8170392,520+0.5%+<0.01% (now 1.3%)filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M buy1,2240390,703+0.3%+<0.01% (now 1.3%)filing
2026-03-24DIORIO CHRIS PH.D.Director, Officer (CHIEF EXECUTIVE OFFICER)M buy2,5940389,479+0.7%+<0.01% (now 1.3%)filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)A buy7,627 7,627 Common Stock7,627filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M sell597 597 Common Stock4,773filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M sell479 479 Common Stock1,917filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M sell782 782 Common Stock0filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)F sell7320$101.17$74.1K89,003−0.8%−<0.01% (now 0.29%)filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M buy597089,735+0.7%+<0.01% (now 0.29%)filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M buy479089,138+0.5%+<0.01% (now 0.29%)filing
2026-03-24Baker CaryOfficer (CHIEF FINANCIAL OFFICER)M buy782088,659+0.9%+<0.01% (now 0.29%)filing

Up to 200 most recent filings · select a heading to sort, or open “How to read this” above for definitions · this company on SEC EDGAR.