BetaInsiders sold $2.1M in the past 12 months.91% was sold under disclosed trading plans, 9% with no plan disclosed. The largest seller, Cary Baker (Chief Financial Officer), sold $1.9M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why
A share of stake is shown for 0 of the 2 officers and directors who sold. 9 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: Chris Diorio, Cary Baker, Hussein Mecklai, Steve Sanghi, Cathal Phelan, Meera Rao, Umesh Padval, Miron Washington and Arthur Valdez Jr. (share of stake is being verified).
Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.
Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Chris Diorio Chief Executive Officer, Director | 1,197 | $177.20 | n/a | n/a | Sep 23, 2026 | Sep 24, 2026 |
| Cary Baker Chief Financial Officer | 424 | $177.20 | n/a | n/a | Sep 23, 2026 | Sep 24, 2026 |
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Cary Baker Chief Financial Officer | 8,892 | $185.00 | n/a | n/a | Sep 21, 2026 | Sep 21, 2026 |
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Miron Washington Director | 800 | $173.26 | n/a | n/a | Sep 15, 2026 | Sep 16, 2026 |
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Chris Diorio Chief Executive Officer, Director | 10,000 | n/a | n/a | n/a | Sep 14, 2026 | Sep 15, 2026 |
"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.
SYLEBRA CAPITAL LLC sold $161M in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.
No. Chris Diorio reported no open-market sales in the past 12 months.
Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 91% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 9% had no disclosed plan. A trading plan schedules sales in advance.
No. Officers and directors reported no purchases in the past 12 months.
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| Cary Baker Chief Financial Officer | $1.9M 10K shares | Not confirmedshare of stake is being verified. Why | Disclosed plan |
| Miron Washington Director | $193K 1.1K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
Outside holder, reported separately: SYLEBRA CAPITAL LLC (an outside shareholder, not part of management). Sold $161M (1.05M shares) from Nov 3, 2025 to Jun 9, 2026. Latest filing
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 13, 2025 | Sold | Held Oct 13, 2026 | Still held | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chris Diorio!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Chris Diorio are complete. Chief Executive Officer, Director | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Chris DiorioHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Chris Diorio are complete; balances and unit counts will be added when the check is finished. −49Kgifted (net of own trusts) −16Kwithheld by the company for taxes | ||||||||||||||||
Cary Baker!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Cary Baker are complete. Chief Financial Officer | n/a | −10K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Cary BakerHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Cary Baker are complete; balances and unit counts will be added when the check is finished. −1Kgifted (net of own trusts) −5.2Kwithheld by the company for taxes Stock options (not counted as shares):
Estimate: options held × ($185.00 − strike price), using the most recent insider trade price on Form 4 (Sep 21, 2026), not a market close. | ||||||||||||||||
Hussein Mecklai!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Hussein Mecklai are complete. Chief Operating Officer | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Hussein MecklaiHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Hussein Mecklai are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($185.00 − strike price), using the most recent insider trade price on Form 4 (Sep 21, 2026), not a market close. | ||||||||||||||||
Steve Sanghi!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Steve Sanghi are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Steve SanghiHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Steve Sanghi are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Cathal Phelan!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Cathal Phelan are complete. Chief Innovation Officer, Director | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Cathal PhelanHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Cathal Phelan are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Meera Rao!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Meera Rao are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Meera RaoHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Meera Rao are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Umesh Padval!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Umesh Padval are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Umesh PadvalHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Umesh Padval are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Miron Washington!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Miron Washington are complete. Director | n/a | −1.1K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Miron WashingtonHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Miron Washington are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Arthur Valdez Jr.!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Arthur Valdez Jr. are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Arthur Valdez Jr.Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Arthur Valdez Jr. are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Holdings and share of stake for Impinj Inc are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.
Officer and director open-market sales: $2.1M across 11,463 shares. Plan status and stated purpose are separate questions, and a sale can have both.
The lighter segment is sales with no plan disclosed in the filing ($193K), including tax-related sales outside a plan.
Sales with no 10b5-1 plan and no tax reference in the filing. $193K of it is Miron Washington. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Miron Washington, Sep 15, 2026
20,973 shares ($2.9M) were withheld by the company for taxes, which isn't a market sale.
Gifts the filings describe as charitable. Gifts are not sales and are not included in the sale totals.
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| Cary Baker Chief Financial Officer | 10K | $1.9M | 100% | 91% | Aug 10, 2026 to Sep 21, 2026 |
| Miron Washington Director | 1.1K | $193K | 0% | 9% | Nov 7, 2025 to Sep 15, 2026 |
| Month | Sale proceeds | Disclosed plan | To cover taxes | No plan disclosed |
|---|---|---|---|---|
| Oct 2025 | $0 | $0 | $0 | $0 |
| Nov 2025 | $54K | $0 | $0 | $54K |
| Dec 2025 | $0 | $0 | $0 | $0 |
| Jan 2026 | $0 | $0 | $0 | $0 |
| Feb 2026 | $0 | $0 | $0 | $0 |
| Mar 2026 | $0 | $0 | $0 | $0 |
| Apr 2026 | $0 | $0 | $0 | $0 |
| May 2026 | $0 | $0 | $0 | $0 |
| Jun 2026 | $0 | $0 | $0 | $0 |
| Jul 2026 | $0 | $0 | $0 | $0 |
| Aug 2026 | $264K | $264K | $0 | $0 |
| Sep 2026 | $1.8M | $1.6M | $0 | $139K |
| Oct 2026 | $0 | $0 | $0 | $0 |
Less than usual: about one-twentieth of the 5-year average. 2 insiders sold; the average is 6 a year.
| 12 months ending | Shares sold | Insiders who sold | Proceeds |
|---|---|---|---|
| Oct 13, 2026 Latest 12 months | 11K | 2 | $2.1M |
| Oct 13, 2025 1 year earlier | 176K | 5 | $32.9M |
| Oct 13, 2024 2 years earlier | 321K | 7 | $42.3M |
| Oct 14, 2023 3 years earlier | 210K | 6 | $23.9M |
| Oct 14, 2022 4 years earlier | 266K | 7 | $20.5M |
| Oct 14, 2021 5 years earlier | 177K | 4 | $9.7M |
Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.
Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Impinj Inc are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 646 Forms 3, 4 and 5 on record for Impinj Inc (SEC CIK 1114995), filed from Jul 20, 2016 to Sep 24, 2026; 55 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".
| Name | Last filed | Last reported balance |
|---|---|---|
| Jeffrey Dossett | Feb 24, 2025 | 71,886 shares, last reported balance as of Feb 21, 2025 |
| Gregory Sessler | Jun 12, 2023 | 28,257 shares, last reported balance as of Jun 8, 2023 |
| Peter Van Oppen | Jun 13, 2022 | 24,266 shares, last reported balance as of Jun 9, 2022 |
| Theresa Wise | Jun 13, 2022 | 14,850 shares, last reported balance as of Jun 9, 2022 |
| Tom Alberg | Oct 23, 2020 | 104,554 shares, last reported balance as of Oct 23, 2020 |
| Clinton Bybee | Oct 23, 2020 | 759,726 shares, last reported balance as of Oct 23, 2020 |
| Eric Brodersen | Mar 10, 2020 | 95,211 shares, last reported balance as of Mar 6, 2020 |
| Denise Masters | Mar 3, 2020 | 6,654 shares, last reported balance as of Mar 3, 2020 |
| Evan Fein | Feb 21, 2018 | 49,995 shares, last reported balance as of Feb 20, 2018 |
| ARCH VENTURE FUND V LP | Aug 30, 2016 | 1,366,735 shares, last reported balance as of Jul 26, 2016 |
| Walter Palhetas | Aug 25, 2016 | No balance on record |
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