What SEC filings does Impinj, Inc. submit to the SEC?

Impinj, Inc. (PI) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about PI?

A Form 4 for PI discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Impinj, Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for PI?

The 10-K is Impinj, Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all PI SEC filings directly on EDGAR?

You can view all historical Impinj, Inc. filings on the SEC EDGAR company page for PI. Each filing card on this page links directly to the original SEC document.

How often does Impinj, Inc. file with the SEC?

Impinj, Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling PI shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

PI SEC Filing News — Impinj, Inc.

Latest SEC filings for Impinj, Inc. (PI) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-13.

Impinj, Inc. operates a cloud connectivity platform in the Americas, the Asia Pacific, Europe, the Middle East, and Africa. Its platform wirelessly connects items and delivers data about the connected items to business and consumer applications. The company's platform comprises endpoint ICs, a miniature radios-on-a-chip that attaches to a host item and includes a number to identify the item. Its platform also consists of systems products that consists of reader ICs, readers, and gateways to wire…

Sector: Technology Industry: Semiconductors Market Cap: $5.4B CIK: 1114995

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for PI currently lean bearish. Of the 20 filing records displayed, 4 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

PI Filing Activity Snapshot 2026-06-10 — 2026-10-13

Insider Transactions (Form 4)

0 buys vs 4 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$7.41M

SYLEBRA CAPITAL LLC (Director) · 2026-06-10

57,633 shares · Form 4

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 15 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 15 filings in this group are Form 4s for Impinj, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 15 insider filings shown, the breakdown is 6 option exercise, 5 gift and 4 open-market sale. 4 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Option exercise ×6: The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Gift ×5: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Open-market sale ×4: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Form 4 Gift Tax / Compensation Filing 2026-10-13

PI insider Form 4 filed for equity award, exercise, or tax withholding

DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	10,000	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 10,000

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-09-24

PI insider Form 4 filed for equity award, exercise, or tax withholding

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	1,224	—	—
`M`	Option exercise	1,817	—	—
`F`	Tax withholding on vested shares	1,197	$177.20	$212.1K
`M`	Option exercise derivative · Restricted Stock Units	1,224	—	—
`M`	Option exercise derivative · Restricted Stock Units	1,817	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 4,238

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-09-24

PI insider Form 4 filed for equity award, exercise, or tax withholding

Baker Cary (CHIEF FINANCIAL OFFICER) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	479	—	—
`M`	Option exercise	596	—	—
`F`	Tax withholding on vested shares	424	$177.20	$75.1K
`M`	Option exercise derivative · Restricted Stock Units	479	—	—
`M`	Option exercise derivative · Restricted Stock Units	596	—	—

Filing: Form 4 (Insider Transaction) Insider: Baker Cary (CHIEF FINANCIAL OFFICER) Shares: 1,499

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-21

PI insider Baker Cary (CHIEF FINANCIAL OFFICER) sold 8,892 shares (~$1.65M)

Baker Cary, listed as CHIEF FINANCIAL OFFICER at IMPINJ INC, reported an open-market sale of 8,892 PI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	8,892	$185.00	$1.65M

Filing: Form 4 (Insider Transaction) Insider: Baker Cary (CHIEF FINANCIAL OFFICER) Shares: 8,892 Est. Value: $1.65M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-16

PI insider WASHINGTON MIRON (Director) sold 800 shares (~$138.6K)

WASHINGTON MIRON, listed as Director at IMPINJ INC, reported an open-market sale of 800 PI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	800	$173.26	$138.6K

Filing: Form 4 (Insider Transaction) Insider: WASHINGTON MIRON (Director) Shares: 800 Est. Value: $138.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-09-15

PI insider Form 4 filed for equity award, exercise, or tax withholding

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	10,000	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 10,000

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-08-21

PI insider Form 4 filed for equity award, exercise, or tax withholding

Baker Cary (CHIEF FINANCIAL OFFICER) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	1,739	—	—
`F`	Tax withholding on vested shares	685	$159.73	$109.4K
`M`	Option exercise derivative · Restricted Stock Units	1,739	—	—

Filing: Form 4 (Insider Transaction) Insider: Baker Cary (CHIEF FINANCIAL OFFICER) Shares: 2,424

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-08-21

PI insider Form 4 filed for equity award, exercise, or tax withholding

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	3,753	—	—
`F`	Tax withholding on vested shares	1,477	$159.73	$235.9K
`M`	Option exercise derivative · Restricted Stock Units	3,753	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 5,230

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-08-18

PI insider Form 4 filed for equity award, exercise, or tax withholding

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	10,000	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 10,000

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-12

PI insider Baker Cary (CHIEF FINANCIAL OFFICER) sold 1,429 shares (~$264.4K)

Baker Cary, listed as CHIEF FINANCIAL OFFICER at IMPINJ INC, reported an open-market sale of 1,429 PI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,429	$185.00	$264.4K

Filing: Form 4 (Insider Transaction) Insider: Baker Cary (CHIEF FINANCIAL OFFICER) Shares: 1,429 Est. Value: $264.4K

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-07-14

PI insider Form 4 filed for equity award, exercise, or tax withholding

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	10,000	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 10,000

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-06-24

PI insider Form 4 filed for equity award, exercise, or tax withholding

Baker Cary (CHIEF FINANCIAL OFFICER) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	479	—	—
`M`	Option exercise	597	—	—
`F`	Tax withholding on vested shares	424	$125.22	$53.1K
`M`	Option exercise derivative · Restricted Stock Units	479	—	—
`M`	Option exercise derivative · Restricted Stock Units	597	—	—

Filing: Form 4 (Insider Transaction) Insider: Baker Cary (CHIEF FINANCIAL OFFICER) Shares: 1,500

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-06-24

PI insider Form 4 filed for equity award, exercise, or tax withholding

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	1,223	—	—
`M`	Option exercise	1,817	—	—
`F`	Tax withholding on vested shares	1,197	$125.22	$149.9K
`M`	Option exercise derivative · Restricted Stock Units	1,223	—	—
`M`	Option exercise derivative · Restricted Stock Units	1,817	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 4,237

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-06-16

PI insider Form 4 filed for equity award, exercise, or tax withholding

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	10,000	—	—

Filing: Form 4 (Insider Transaction) Insider: DIORIO CHRIS PH.D. (Director, CHIEF EXECUTIVE OFFICER) Shares: 10,000

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-06-10

PI insider SYLEBRA CAPITAL LLC (Director) sold 57,633 shares (~$7.41M)

SYLEBRA CAPITAL LLC, listed as Director at IMPINJ INC, reported an open-market sale of 57,633 PI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	12,528	$125.97	$1.58M
`S`	Open-market sale	33,000	$130.07	$4.29M
`S`	Open-market sale	12,105	$127.36	$1.54M

Filing: Form 4 (Insider Transaction) Insider: SYLEBRA CAPITAL LLC (Director) Shares: 57,633 Est. Value: $7.41M

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 2 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Impinj, Inc. has 2 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-09-15

PI Form 144 filed for proposed insider sale by WASHINGTON MIRON (800 shares) ~$138.6K

WASHINGTON MIRON filed a Form 144 with the SEC indicating intent to sell PI (IMPINJ INC) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: WASHINGTON MIRON Shares: 800 Est. Value: $138.6K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-10

PI Form 144 filed for proposed insider sale by Baker Cary (10,321 shares) ~$1.91M

Baker Cary filed a Form 144 with the SEC indicating intent to sell PI (IMPINJ INC) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Baker Cary Shares: 10,321 Est. Value: $1.91M

View on SEC EDGAR → Open Filing Document →

Material Events 2 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 2 in this period for Impinj, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-09-11

PI filed 8-K — material company event

IMPINJ INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-29

PI filed 8-K — material company event

IMPINJ INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Impinj, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-07-29

PI filed Quarterly Report (10-Q)

IMPINJ INC filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Impinj, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on PI. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — PI SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

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