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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Sep 21, 2026Reported sale · Form 4Cary Baker, CHIEF FINANCIAL OFFICER · $1.6MOpen the filing ↗
- Sep 15, 2026Reported sale · Form 4MIRON WASHINGTON · $138.6KOpen the filing ↗
- Sep 15, 2026Notice of sale · Form 144WASHINGTON MIRON · Director · $138.6KOpen the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record1,13413 flagged findings
Reported transactions (Form 4)80since Sep 23, 2025 · and 2 other holdings
Corporate events (8-K)30since Aug 13, 2018
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
What the company does
Impinj, Inc. is an American manufacturer of radio-frequency identification (RFID) devices and software. The company was founded in 2000 and is headquartered in Seattle, Washington. The company was started based on the research done at the California Institute of Technology by Carver Mead and Chris Diorio. Impinj currently produces EPC Class 1, Gen 2 passive UHF RFID chips, RFID readers, RFID reader chips, and RFID antennas, and software applications for encoding chips, and gathering business intelligence on RFID systems.
Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-04-29share offering or dilution eventrecentOpen filing ↗“…the remaining term of the Settlement Agreement. We have no obligation to pay NXP under the Settlement Agreement. We will recognize…”
+1 more passage from the same document
- “…Agreement. We will recognize the license fee, which relates to annual usage of the license from April 1 to March 31 of each…”
- 2026-04-29export control restrictionsrecentOpen filing ↗“…to and within China and additional destinations. These expanded controls include imposing additional licensing requirements on…”
- 2026-04-29capital return (buybacks/dividends)recentOpen filing ↗“…change (as defined in the Indenture governing each series of Notes) are, under certain circumstances, entitled to an…”
+1 more passage from the same document
- “…of Notes) are, under certain circumstances, entitled to an increase in the conversion rate for such Notes. Additionally in the…”
- 2026-03-16share offering or dilution eventrecentOpen filing ↗“…registrant has elected not to use the extended transition period for complying with any new or revised financial accounting…”
- 2026-03-16capital return (buybacks/dividends)recentOpen filing ↗“…an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for…”
+1 more passage from the same document
- “…transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 1,134)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Sep 15, 26Form 144 ↗Notice of proposed sale
- Sep 15, 26Form 4 ↗Insider transaction
- Sep 11, 268-K ↗Current report · Other events
- Aug 10, 26Form 144 ↗Notice of proposed sale
- Aug 7, 26SCHEDULE 13G ↗Passive stake · STATE STREET CORPORATION · 5.6% · event on Jun 30, 26
- Jul 29, 2610-Q ↗Quarterly report
- Jul 29, 268-K ↗Current report · Results
- Jun 10, 26Form 4/A ↗Insider transaction · amendment
1,134 filings on record, the oldest from Jul 20, 16.
Listing the 25 most recent filings of the 1,134 on record.
71719
- Dec 22, 25A senior executive left or was appointed8-K 5.02 ↗
- Oct 30, 25Entered a material agreement+1 more in the same filing8-K 1.01 ↗
- Oct 20, 25A senior executive left or was appointed8-K 5.02 ↗
- Sep 8, 25Entered a material agreement+4 more in the same filing8-K 1.01 ↗
- May 22, 25A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 5, 25A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 13, 24Entered a material agreement8-K 1.01 ↗
- Feb 8, 24Restructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗
3 senior executive changes2022 – 2023show all 3hide
- Apr 26, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Mar 27, 23A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 3, 22A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Nov 5, 21Entered a material agreement+4 more in the same filing8-K 1.01 ↗
- Mar 22, 21A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Feb 10, 21Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
9 older filings not shown · The record reaches back to Aug 29, 16.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Sep 13, 18Listing notice (8-K 3.01)+1 more in the same filing8-K 3.01 ↗
- Aug 13, 18Listing notice (8-K 3.01)+1 more in the same filing8-K 3.01 ↗
- Apr 23, 18Restructuring plan with committed costs8-K/A 2.05 ↗
- Feb 15, 18Restructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
- Nov 15, 16Past accounts declared unreliable and being restated8-K 4.02 ↗
The full record holds 7 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13D: stake and stated purpose
Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.
- SYLEBRA CAPITAL LLC3.8%Dec 15, 25SCHEDULE 13D/A ↗4 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- Vanguard Portfolio Management7.2%Mar 31, 26SCHEDULE 13G ↗
- STATE STREET CORPORATION5.6%Jun 30, 26SCHEDULE 13G ↗
- Capital International Investors4.5%Mar 31, 26SCHEDULE 13G/A ↗1 earlier filing
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
Sale intention announced
On Sep 15, WASHINGTON MIRON filed notice of intent to sell up to $139K.
A notice is not a sale: it may not go ahead, may happen in part, or at a different price.
After the notice, they sold $139K on Sep 15, per their Form 4. That is 100% of the shares announced so far, and the window is still open.
View notice (Form 144) ↗+1 more recent notices · 1 with a later sale
- Sep 21, 26Sell$1.6MCary BakerCHIEF FINANCIAL OFFICER↗
- Sep 15, 26Sell$139KMIRON WASHINGTON↗
- Aug 10, 26Sell$264KCary BakerCHIEF FINANCIAL OFFICER↗
- Jun 9, 26Sell$2.4MSYLEBRA CAPITAL LLC↗
- Jun 8, 26Sell$1.6MSYLEBRA CAPITAL LLC↗
- Jun 8, 26Sell$4.3MSYLEBRA CAPITAL LLC↗
- Jun 5, 26Sell$1.5MSYLEBRA CAPITAL LLC↗
- Jun 5, 26Sell$4.4MSYLEBRA CAPITAL LLC↗
- Jun 4, 26Sell$4.6MSYLEBRA CAPITAL LLC↗
- Jun 3, 26Sell$879KSYLEBRA CAPITAL LLC↗
- Jun 2, 26Sell$5.5MSYLEBRA CAPITAL LLC↗
- Jun 1, 26Sell$1.0MSYLEBRA CAPITAL LLC↗
There is 1 more transaction in this stretch.
Stock compensation, tax and giftsshow the 27 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Oct 12, 26Giftamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Sep 23, 26Compensationamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Sep 23, 26Compensationamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Sep 23, 26Tax$212KCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Sep 23, 26Compensationamount n/aCary BakerCHIEF FINANCIAL OFFICER↗
- Sep 23, 26Compensationamount n/aCary BakerCHIEF FINANCIAL OFFICER↗
- Sep 23, 26Tax$75KCary BakerCHIEF FINANCIAL OFFICER↗
- Sep 14, 26Giftamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Aug 20, 26Compensationamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Aug 20, 26Tax$236KCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Aug 20, 26Compensationamount n/aCary BakerCHIEF FINANCIAL OFFICER↗
- Aug 20, 26Tax$109KCary BakerCHIEF FINANCIAL OFFICER↗
- Aug 17, 26Giftamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Jul 13, 26Giftamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Jun 23, 26Compensationamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Jun 23, 26Compensationamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Jun 23, 26Tax$150KCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- Jun 23, 26Compensationamount n/aCary BakerCHIEF FINANCIAL OFFICER↗
- Jun 23, 26Compensationamount n/aCary BakerCHIEF FINANCIAL OFFICER↗
- Jun 23, 26Tax$53KCary BakerCHIEF FINANCIAL OFFICER↗
- Jun 15, 26Giftamount n/aCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
- May 28, 26Compensationamount n/aSteve Sanghi↗
- May 28, 26Compensationamount n/aUMESH PADVAL↗
- May 28, 26Compensationamount n/aMeera Rao↗
- May 28, 26Compensationamount n/aDaniel Patrick Gibson↗
- May 28, 26Compensationamount n/aMIRON WASHINGTON↗
- May 26, 26Other$28.2MCHRIS DIORIO PH.D.CHIEF EXECUTIVE OFFICER↗
The full record holds 881 transactions and goes back to Feb 13, 22.
Its sector and its market
Impinj, Inc. among Information Technology companies
The profile shows what is on record. Context and Radar place the company among those of its sector and region.
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- End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
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- 250 clean closes in the period.
- SEC records
- 1,134 documents on file, from Jul 20, 2016 to Oct 13, 2026.
- Company description
- Wikipedia, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
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Which SEC documents appear here?
Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
Why does a European company show no SEC records?
It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.
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