Impinj (PI)
Impinj on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as electronic components, nec.
2.5M
Short interest
settlement 2026-10-15
6.1
Days to cover
-0.5 days vs prior
51.6%
Short share of volume
2026-10-28
120
Fails to deliver
settlement 2026-09-28
Tue 12 Jan
Next earnings
estimated date
-$2.0M
Insider flow, 90 days
0 buys, 3 sells
As of 2026-10-28.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in PI is 2,495,742 shares, down 535,522 shares over the last month. Over the last 48 readings it ranged from 2,495,742 shares (15 October 2026) to 4,492,402 shares (31 January 2025). The latest reading sits at the bottom of that range. At the reported average volume of 407K shares a day that is 6.1 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 2,495,742 | -7.6% | 406,980 | 6.13 |
| 2026-09-30 | 2,701,173 | -10.9% | 410,042 | 6.59 |
| 2026-09-15 | 3,031,264 | +10.8% | 382,439 | 7.93 |
| 2026-08-31 | 2,735,738 | -7.4% | 326,429 | 8.38 |
| 2026-08-14 | 2,955,390 | -1.5% | 510,684 | 5.79 |
| 2026-07-31 | 3,001,563 | -10.4% | 468,603 | 6.41 |
| 2026-07-15 | 3,350,690 | +0.5% | 275,355 | 12.17 |
| 2026-06-30 | 3,335,442 | -2.4% | 452,651 | 7.37 |
| 2026-06-15 | 3,416,450 | +5.0% | 448,348 | 7.62 |
| 2026-05-29 | 3,253,966 | +12.3% | 455,484 | 7.14 |
| 2026-05-15 | 2,897,261 | -5.0% | 484,628 | 5.98 |
| 2026-04-30 | 3,050,491 | -0.8% | 664,188 | 4.59 |
| 2026-04-15 | 3,074,460 | -0.5% | 292,715 | 10.50 |
| 2026-03-31 | 3,091,059 | +3.0% | 474,459 | 6.51 |
| 2026-03-13 | 3,000,911 | +0.8% | 835,733 | 3.59 |
| 2026-02-27 | 2,978,592 | +8.3% | 506,798 | 5.88 |
| 2026-02-13 | 2,750,803 | +8.2% | 1,174,894 | 2.34 |
| 2026-01-30 | 2,543,075 | -3.1% | 643,744 | 3.95 |
| 2026-01-15 | 2,624,140 | -0.7% | 711,480 | 3.69 |
| 2025-12-31 | 2,643,182 | -6.5% | 571,185 | 4.63 |
| 2025-12-15 | 2,827,539 | -5.0% | 657,941 | 4.30 |
| 2025-11-28 | 2,976,184 | +15.6% | 504,864 | 5.90 |
| 2025-11-14 | 2,574,699 | +0.4% | 524,908 | 4.91 |
| 2025-10-31 | 2,564,318 | -17.9% | 636,877 | 4.03 |
| 2025-10-15 | 3,121,424 | -0.1% | 453,295 | 6.89 |
| 2025-09-30 | 3,125,945 | -5.1% | 492,981 | 6.34 |
| 2025-09-15 | 3,294,310 | -14.7% | 737,679 | 4.47 |
| 2025-08-29 | 3,862,973 | +1.0% | 394,896 | 9.78 |
| 2025-08-15 | 3,825,140 | +9.8% | 513,104 | 7.45 |
| 2025-07-31 | 3,483,738 | +22.4% | 681,974 | 5.11 |
| 2025-07-15 | 2,846,354 | -2.4% | 389,522 | 7.31 |
| 2025-06-30 | 2,916,689 | -16.2% | 403,291 | 7.23 |
| 2025-06-13 | 3,480,931 | -5.0% | 429,744 | 8.10 |
| 2025-05-30 | 3,662,460 | +0.8% | 404,609 | 9.05 |
| 2025-05-15 | 3,633,211 | +13.0% | 656,754 | 5.53 |
| 2025-04-30 | 3,216,078 | -1.1% | 1,001,224 | 3.21 |
| 2025-04-15 | 3,251,185 | -10.4% | 993,370 | 3.27 |
| 2025-03-31 | 3,627,769 | +0.8% | 440,572 | 8.23 |
| 2025-03-14 | 3,597,445 | +2.2% | 637,046 | 5.65 |
| 2025-02-28 | 3,519,952 | -1.7% | 456,171 | 7.72 |
| 2025-02-14 | 3,582,244 | -20.3% | 1,158,250 | 3.09 |
| 2025-01-31 | 4,492,402 | +6.2% | 692,894 | 6.48 |
| 2025-01-15 | 4,231,445 | +0.9% | 555,144 | 7.62 |
| 2024-12-31 | 4,193,761 | +10.9% | 555,633 | 7.55 |
| 2024-12-13 | 3,781,960 | +13.9% | 650,346 | 5.82 |
| 2024-11-29 | 3,321,062 | +3.3% | 354,546 | 9.37 |
| 2024-11-15 | 3,216,285 | +2.6% | 510,202 | 6.30 |
| 2024-10-31 | 3,136,115 | -19.6% | 711,374 | 4.41 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of PI volume is 51.6%, down 4.6 points over the last five sessions. Over the last 30 readings it ranged from 43.0% (20 October 2026) to 80.2% (27 October 2026). The latest reading is 12.5 points below the 30-session average of 64.2%, on 173K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 89K | 173K | 51.6% | 0 |
| 2026-10-27 | 139K | 173K | 80.2% | 10 |
| 2026-10-26 | 57K | 108K | 52.8% | 0 |
| 2026-10-23 | 46K | 98K | 46.3% | 1,021 |
| 2026-10-22 | 85K | 179K | 47.5% | 2,248 |
| 2026-10-21 | 53K | 94K | 56.3% | 0 |
| 2026-10-20 | 50K | 117K | 43.0% | 0 |
| 2026-10-19 | 131K | 230K | 57.1% | 540 |
| 2026-10-16 | 149K | 279K | 53.2% | 0 |
| 2026-10-15 | 113K | 147K | 77.0% | 0 |
| 2026-10-14 | 165K | 218K | 75.8% | 6 |
| 2026-10-13 | 142K | 181K | 78.6% | 0 |
| 2026-10-12 | 81K | 118K | 68.9% | 0 |
| 2026-10-09 | 67K | 93K | 71.8% | 138 |
| 2026-10-08 | 127K | 167K | 76.0% | 4 |
| 2026-10-07 | 90K | 134K | 67.4% | 42 |
| 2026-10-06 | 73K | 101K | 72.2% | 0 |
| 2026-10-05 | 76K | 123K | 62.0% | 207 |
| 2026-10-02 | 93K | 126K | 73.4% | 396 |
| 2026-10-01 | 94K | 140K | 67.1% | 150 |
| 2026-09-30 | 80K | 104K | 76.9% | 0 |
| 2026-09-29 | 37K | 58K | 63.6% | 12 |
| 2026-09-28 | 84K | 128K | 65.3% | 3 |
| 2026-09-25 | 61K | 95K | 63.9% | 2 |
| 2026-09-24 | 63K | 137K | 45.7% | 0 |
| 2026-09-23 | 125K | 218K | 57.4% | 0 |
| 2026-09-22 | 101K | 127K | 79.9% | 0 |
| 2026-09-21 | 47K | 80K | 58.4% | 0 |
| 2026-09-18 | 46K | 65K | 70.0% | 0 |
| 2026-09-17 | 91K | 139K | 65.6% | 93 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 28 September 2026, the fails-to-deliver balance in PI is 120 shares, down 9,625 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (17 July 2026) to 50,463 shares (3 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-28 | 120 | $178.28 | $21K |
| 2026-09-23 | 9,745 | $181.75 | $1.8M |
| 2026-09-22 | 3,223 | $184.05 | $593K |
| 2026-09-21 | 3,108 | $181.23 | $563K |
| 2026-09-18 | 3,660 | $179.73 | $658K |
| 2026-09-09 | 1,278 | $171.82 | $220K |
| 2026-08-24 | 3,087 | $165.54 | $511K |
| 2026-08-10 | 201 | $183.36 | $37K |
| 2026-08-04 | 276 | $161.44 | $45K |
| 2026-08-03 | 14,082 | $151.36 | $2.1M |
| 2026-07-31 | 133 | $147.49 | $20K |
| 2026-07-27 | 1 | $127.55 | $128 |
| 2026-07-23 | 475 | $138.02 | $66K |
| 2026-07-20 | 808 | $138.37 | $112K |
| 2026-07-17 | 1 | $140.76 | $141 |
| 2026-07-06 | 8,688 | $141.58 | $1.2M |
| 2026-07-01 | 4,055 | $143.23 | $581K |
| 2026-06-30 | 21,781 | $133.30 | $2.9M |
| 2026-06-18 | 91 | $123.62 | $11K |
| 2026-06-03 | 50,463 | $143.26 | $7.2M |
| 2026-06-02 | 47,379 | $142.67 | $6.8M |
| 2026-05-20 | 888 | $132.74 | $118K |
| 2026-05-19 | 191 | $139.30 | $27K |
| 2026-05-18 | 800 | $138.72 | $111K |
| 2026-05-07 | 3,307 | $155.13 | $513K |
| 2026-05-05 | 85 | $143.18 | $12K |
| 2026-05-04 | 219 | $147.21 | $32K |
| 2026-04-24 | 6,204 | $120.93 | $750K |
| 2026-04-22 | 6,820 | $118.32 | $807K |
| 2026-04-21 | 135 | $112.86 | $15K |
Insider trades
SEC Form 4, newest first. JSONInsiders at PI reported 3 open-market sells worth $2.0M in the last 90 days and no open-market buys. Latest filing: Valdez Arthur L Jr (Director) on 2026-10-20.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-20 | Valdez Arthur L Jr | Director | Exercise or conversion | 1K | $0.00 | $0 | 1K |
| 2026-10-12 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 10K | $0.00 | $0 | 346K |
| 2026-09-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Tax withholding | 424 | $177.20 | $75K | 81K |
| 2026-09-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 596 | $0.00 | $0 | 81K |
| 2026-09-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 479 | $0.00 | $0 | 81K |
| 2026-09-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Tax withholding | 1K | $177.20 | $212K | 356K |
| 2026-09-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 2K | $0.00 | $0 | 357K |
| 2026-09-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 1K | $0.00 | $0 | 356K |
| 2026-09-21 | Baker Cary | CHIEF FINANCIAL OFFICER | Sell | 9K | $185.00 | $1.6M | 80K |
| 2026-09-15 | WASHINGTON MIRON | Director | Sell | 800 | $173.26 | $139K | 4K |
| 2026-09-14 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 10K | $0.00 | $0 | 354K |
| 2026-08-20 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Tax withholding | 1K | $159.73 | $236K | 364K |
| 2026-08-20 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 4K | $0.00 | $0 | 366K |
| 2026-08-20 | Baker Cary | CHIEF FINANCIAL OFFICER | Tax withholding | 685 | $159.73 | $109K | 89K |
| 2026-08-20 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 2K | $0.00 | $0 | 90K |
| 2026-08-17 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 10K | $0.00 | $0 | 362K |
| 2026-08-10 | Baker Cary | CHIEF FINANCIAL OFFICER | Sell | 1K | $185.00 | $264K | 88K |
| 2026-07-13 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 10K | $0.00 | $0 | 372K |
| 2026-06-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 1K | $0.00 | $0 | 382K |
| 2026-06-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 2K | $0.00 | $0 | 383K |
| 2026-06-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Tax withholding | 1K | $125.22 | $150K | 382K |
| 2026-06-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Tax withholding | 424 | $125.22 | $53K | 90K |
| 2026-06-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 597 | $0.00 | $0 | 90K |
| 2026-06-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 479 | $0.00 | $0 | 89K |
| 2026-06-15 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 10K | $0.00 | $0 | 380K |
| 2026-06-09 | SYLEBRA CAPITAL LLC | Director | Sell | 19K | $127.36 | $2.4M | 776K |
| 2026-06-09 | SYLEBRA CAPITAL LLC | Director | Sell | 12K | $127.36 | $1.5M | 783K |
| 2026-06-08 | SYLEBRA CAPITAL LLC | Director | Sell | 33K | $130.07 | $4.3M | 795K |
| 2026-06-08 | SYLEBRA CAPITAL LLC | Director | Sell | 13K | $125.97 | $1.6M | 828K |
| 2026-06-08 | SYLEBRA CAPITAL LLC | Director | Sell | 33K | $130.07 | $4.3M | 795K |
| 2026-06-08 | SYLEBRA CAPITAL LLC | Director | Sell | 13K | $125.97 | $1.6M | 828K |
| 2026-06-05 | SYLEBRA CAPITAL LLC | Director | Sell | 36K | $122.50 | $4.4M | 841K |
| 2026-06-05 | SYLEBRA CAPITAL LLC | Director | Sell | 12K | $128.87 | $1.5M | 876K |
| 2026-06-04 | SYLEBRA CAPITAL LLC | Director | Sell | 33K | $136.84 | $4.6M | 888K |
| 2026-06-03 | SYLEBRA CAPITAL LLC | Director | Sell | 6K | $139.17 | $879K | 921K |
| 2026-06-02 | SYLEBRA CAPITAL LLC | Director | Sell | 39K | $142.31 | $5.5M | 928K |
| 2026-06-01 | SYLEBRA CAPITAL LLC | Director | Sell | 7K | $144.29 | $1.0M | 967K |
| 2026-05-29 | SYLEBRA CAPITAL LLC | Director | Sell | 49K | $150.78 | $7.3M | 974K |
| 2026-05-28 | WASHINGTON MIRON | Director | Exercise or conversion | 3K | $0.00 | $0 | 5K |
| 2026-05-28 | Rao Meera | Director | Exercise or conversion | 3K | $0.00 | $0 | 11K |
| 2026-05-28 | PADVAL UMESH | Director | Exercise or conversion | 3K | $0.00 | $0 | 7K |
| 2026-05-28 | Sanghi Steve | Director | Exercise or conversion | 3K | $0.00 | $0 | 13K |
| 2026-05-28 | Gibson Daniel Patrick | Director | Exercise or conversion | 3K | $0.00 | $0 | 23K |
| 2026-05-26 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Other transaction | 180K | $156.68 | $28.2M | 390K |
| 2026-05-26 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Other transaction | 180K | $156.68 | $28.2M | 570K |
| 2026-05-11 | SYLEBRA CAPITAL LLC | Director | Sell | 13K | $154.46 | $2.0M | 1.0M |
| 2026-05-11 | SYLEBRA CAPITAL LLC | Director | Sell | 24K | $154.46 | $3.7M | 1.0M |
| 2026-05-08 | SYLEBRA CAPITAL LLC | Director | Sell | 10K | $149.97 | $1.4M | 1.1M |
| 2026-05-08 | SYLEBRA CAPITAL LLC | Director | Sell | 2K | $151.32 | $236K | 1.1M |
| 2026-05-08 | SYLEBRA CAPITAL LLC | Director | Sell | 26K | $152.73 | $4.0M | 1.1M |
| 2026-05-07 | SYLEBRA CAPITAL LLC | Director | Sell | 36K | $152.73 | $5.5M | 1.1M |
| 2026-05-07 | SYLEBRA CAPITAL LLC | Director | Sell | 36K | $152.73 | $5.5M | 1.1M |
| 2026-03-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Tax withholding | 2K | $101.17 | $224K | 390K |
| 2026-03-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 2K | $0.00 | $0 | 393K |
| 2026-03-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 1K | $0.00 | $0 | 391K |
| 2026-03-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 3K | $0.00 | $0 | 389K |
| 2026-03-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Tax withholding | 732 | $101.17 | $74K | 89K |
| 2026-03-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 597 | $0.00 | $0 | 90K |
| 2026-03-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 479 | $0.00 | $0 | 89K |
| 2026-03-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 782 | $0.00 | $0 | 89K |
| 2026-02-20 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Tax withholding | 7K | $127.92 | $951K | 387K |
| 2026-02-20 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Grant | 22K | $0.00 | $0 | 394K |
| 2026-02-20 | Baker Cary | CHIEF FINANCIAL OFFICER | Tax withholding | 2K | $127.92 | $286K | 88K |
| 2026-02-20 | Baker Cary | CHIEF FINANCIAL OFFICER | Grant | 9K | $0.00 | $0 | 90K |
| 2026-02-17 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 2K | $0.00 | $0 | 373K |
| 2025-12-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Tax withholding | 2K | $171.99 | $381K | 374K |
| 2025-12-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 2K | $0.00 | $0 | 377K |
| 2025-12-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 1K | $0.00 | $0 | 375K |
| 2025-12-23 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Exercise or conversion | 3K | $0.00 | $0 | 374K |
| 2025-12-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Tax withholding | 732 | $171.99 | $126K | 82K |
| 2025-12-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 596 | $0.00 | $0 | 82K |
| 2025-12-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 479 | $0.00 | $0 | 82K |
| 2025-12-23 | Baker Cary | CHIEF FINANCIAL OFFICER | Exercise or conversion | 781 | $0.00 | $0 | 81K |
| 2025-12-15 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 135K | $150.36 | $20.2M | 1.1M |
| 2025-12-12 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 51K | $146.62 | $7.4M | 1.3M |
| 2025-12-11 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 95K | $152.87 | $14.6M | 1.3M |
| 2025-12-10 | Gibson Daniel Patrick | Director | Sell | 85K | $155.49 | $13.2M | 1.4M |
| 2025-12-10 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 85K | $155.49 | $13.2M | 1.4M |
| 2025-12-09 | Gibson Daniel Patrick | Director | Sell | 40 | $160.01 | $6K | 1.5M |
| 2025-12-09 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 40 | $160.01 | $6K | 1.5M |
| 2025-12-08 | Gibson Daniel Patrick | Director | Sell | 2K | $160.72 | $401K | 1.5M |
| 2025-12-08 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 2K | $160.72 | $401K | 1.5M |
| 2025-12-05 | Gibson Daniel Patrick | Director | Sell | 1K | $161.04 | $221K | 1.5M |
| 2025-12-05 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 1K | $161.04 | $221K | 1.5M |
| 2025-12-04 | Gibson Daniel Patrick | Director | Sell | 3K | $160.59 | $509K | 1.5M |
| 2025-12-04 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 3K | $160.59 | $509K | 1.5M |
| 2025-12-03 | Gibson Daniel Patrick | Director | Sell | 41K | $167.97 | $6.9M | 1.5M |
| 2025-12-03 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 41K | $167.97 | $6.9M | 1.5M |
| 2025-12-02 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 42K | $168.23 | $7.0M | 1.5M |
| 2025-12-01 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 31K | $167.02 | $5.2M | 1.6M |
| 2025-11-28 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 22K | $172.62 | $3.8M | 1.6M |
| 2025-11-26 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 35K | $171.80 | $5.9M | 1.6M |
| 2025-11-25 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 46K | $167.73 | $7.7M | 1.7M |
| 2025-11-25 | Baker Cary | CHIEF FINANCIAL OFFICER | Gift | 1K | $0.00 | $0 | 80K |
| 2025-11-24 | SYLEBRA CAPITAL LLC | See Footnote | Sell | 32K | $159.42 | $5.1M | 1.7M |
| 2025-11-21 | SYLEBRA CAPITAL LLC | See Footnotes | Sell | 3K | $155.10 | $472K | 1.8M |
| 2025-11-20 | SYLEBRA CAPITAL LLC | See Footnotes | Sell | 8K | $156.32 | $1.3M | 1.8M |
| 2025-11-19 | DIORIO CHRIS PH.D. | CHIEF EXECUTIVE OFFICER | Gift | 7K | $0.00 | $0 | 371K |
| 2025-11-12 | Gibson Daniel Patrick | Director | Sell | 4K | $156.30 | $590K | 1.8M |
| 2025-11-12 | SYLEBRA CAPITAL LLC | See Footnotes | Sell | 4K | $156.30 | $590K | 1.8M |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON24 Form 144 notices on file for PI worth $49.4M at the prices reported; 2 in the last 90 days worth $2.0M. Latest: WASHINGTON MIRON filed on 2026-09-15 to sell 800 shares ($139K) from 2026-09-15.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-15 | WASHINGTON MIRONDirector | 800 | $139K | 0.003% | 2026-09-15 | Charles Schwab & Co., Inc. |
| 2026-08-10 | Baker CaryOfficer | 10K | $1.9M | 0.034% | 2026-08-10 | Charles Schwab & Co., Inc. |
| 2025-12-15 | SYLEBRA CAPITAL LLCSee Remarks | 30K | $4.5M | 2.426% | 2025-12-15 | Morgan Stanley & Co. LLC |
| 2025-12-12 | SYLEBRA CAPITAL LLCSee Remarks | 22K | $3.2M | 1.704% | 2025-12-12 | Morgan Stanley & Co. LLC |
| 2025-12-11 | SYLEBRA CAPITAL LLCSee Remarks | 50K | $7.6M | 3.669% | 2025-12-11 | Morgan Stanley & Co. LLC |
| 2025-12-10 | SYLEBRA CAPITAL LLCSee Remarks | 24K | $3.7M | 1.626% | 2025-12-10 | Morgan Stanley & Co. LLC |
| 2025-12-09 | SYLEBRA CAPITAL LLCSee Remarks | 40 | $6K | 0.003% | 2025-12-09 | Goldman Sachs & Co. LLC |
| 2025-12-08 | SYLEBRA CAPITAL LLCSee Remarks | 800 | $129K | 0.053% | 2025-12-08 | Morgan Stanley & Co. LLC |
| 2025-12-05 | SYLEBRA CAPITAL LLCSee Remarks | 748 | $120K | 0.050% | 2025-12-05 | Morgan Stanley & Co. LLC |
| 2025-12-04 | SYLEBRA CAPITAL LLCSee Remarks | 859 | $138K | 0.057% | 2025-12-04 | Morgan Stanley & Co. LLC |
| 2025-12-03 | SYLEBRA CAPITAL LLCSee Remarks | 11K | $1.9M | 0.740% | 2025-12-03 | Morgan Stanley & Co. LLC |
| 2025-12-02 | SYLEBRA CAPITAL LLCSee Remarks | 24K | $4.0M | 1.510% | 2025-12-02 | Morgan Stanley & Co. LLC |
| 2025-12-01 | SYLEBRA CAPITAL LLCSee Remarks | 18K | $3.1M | 1.152% | 2025-12-01 | Morgan Stanley & Co. LLC |
| 2025-11-28 | SYLEBRA CAPITAL LLCSee Remarks | 13K | $2.2M | 0.768% | 2025-11-28 | Morgan Stanley & Co. LLC |
| 2025-11-26 | SYLEBRA CAPITAL LLCSee Remarks | 19K | $3.2M | 1.120% | 2025-11-26 | Morgan Stanley & Co. LLC |
| 2025-11-25 | SYLEBRA CAPITAL LLCSee Remarks | 26K | $4.3M | 1.525% | 2025-11-25 | Morgan Stanley & Co. LLC |
| 2025-11-24 | SYLEBRA CAPITAL LLCSee Remarks | 17K | $2.8M | 1.000% | 2025-11-24 | Morgan Stanley & Co. LLC |
| 2025-11-21 | SYLEBRA CAPITAL LLCSee Remarks | 2K | $273K | 0.100% | 2025-11-21 | Morgan Stanley & Co. LLC |
| 2025-11-20 | SYLEBRA CAPITAL LLCSee Remarks | 5K | $716K | 0.260% | 2025-11-20 | Morgan Stanley & Co. LLC |
| 2025-11-12 | SYLEBRA CAPITAL LLCSee Remarks | 17K | $2.6M | 0.935% | 2025-11-11 | Morgan Stanley & Co. LLC |
| 2025-11-07 | SYLEBRA CAPITAL LLCDirector, See Remarks | 3K | $442K | 0.151% | 2025-11-07 | Morgan Stanley & Co. LLC |
| 2025-11-07 | WASHINGTON MIRONDirector | 342 | $54K | 0.001% | 2025-11-07 | Charles Schwab & Co., Inc. |
| 2025-11-06 | SYLEBRA CAPITAL LLCDirector, See explanatory notes under section of Remarks | 13K | $2.3M | 0.728% | 2025-11-06 | Morgan Stanley & Co. LLC |
| 2025-11-03 | SYLEBRA CAPITAL LLCDirector | 904 | $183K | 0.049% | 2025-11-03 | Morgan Stanley & Co. LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON3 holders report 5% or more of PI in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 14.7% of the class (4,495,591 shares), filed 2026-10-27 for an event on 2026-09-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-27 | 13G/Ano. 6 | BlackRock, Inc.parent holding company | 4.5M | 14.7% | 2026-09-30 |
| 2026-08-07 | 13G | STATE STREET CORPORATIONparent holding company | 1.7M | 5.6% | 2026-06-30 |
| 2026-05-14 | 13G/Ano. 1 | Capital International Investorsinvestment adviser | 1.4M | 4.5% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 2.2M | 7.2% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 6 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2025-12-17 | 13D/Ano. 6 | SYLEBRA CAPITAL LLCinvestment adviser, parent holding company | 1.1M | 3.8% | 2025-12-15 |
| 2025-12-17 | 13D/Ano. 6 | Sylebra Capital Ltdinvestment adviser, parent holding company | 1.1M | 3.8% | 2025-12-15 |
| 2025-12-17 | 13D/Ano. 6 | Sylebra Capital Management, Ltdinvestment adviser, parent holding company | 1.1M | 3.8% | 2025-12-15 |
| 2025-12-17 | 13D/Ano. 6 | Gibson Daniel Patrickindividual | 1.1M | 3.8% | 2025-12-15 |
13F holders
Tracked managers holding PI at their latest 13F. JSON6 of the 30 tracked managers held PI at their latest 13F, $189.5M in total at quarter-end prices. Millennium Management is the largest at $119.5M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Millennium Management | 2026-06-30 | 834K | $119.5M | 0.04% | +732K |
| Point72 Asset Management | 2026-06-30 | 408K | $58.5M | 0.06% | +119K |
| Citadel Advisors | 2026-06-30 | 62K | $8.9M | 0.00% | +56K |
| AQR Capital Management | 2026-06-30 | 9K | $1.2M | 0.00% | -2K |
| D. E. Shaw & Co. | 2026-06-30 | 8K | $1.1M | 0.00% | +351 |
| Soros Fund Management | 2026-06-30 | 2K | $305K | 0.00% | -2K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) Impinj reported revenue of $108.4M, up 10.7% from the same quarter a year earlier, and net income of $12.2M (0.39 diluted EPS). In FY 2025 it generated $58.7M of operating cash flow. As of 2026-06-30, cash was $38.6M against $241.9M of debt.
- Cash
- $38.6M
- Debt
- $241.9M
- Equity
- $231.6M
- Total assets
- $534.7M
- Shares outstanding
- 30,554,413
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $108.4M | $12.2M | 11.3% | 0.39 |
| Q1 FY 2026 | 2026-03-31 | $74.3M | -$25.3M | -34.0% | -0.83 |
| Q4 FY 2025derived | 2025-12-31 | $92.8M | -$1.1M | -1.2% | n/a |
| Q3 FY 2025 | 2025-09-30 | $96.1M | -$12.8M | -13.3% | -0.44 |
| Q2 FY 2025 | 2025-06-30 | $97.9M | $11.6M | 11.8% | 0.39 |
| Q1 FY 2025 | 2025-03-31 | $74.3M | -$8.5M | -11.4% | -0.30 |
| Q4 FY 2024derived | 2024-12-31 | $91.6M | -$2.7M | -2.9% | n/a |
| Q3 FY 2024 | 2024-09-30 | $95.2M | $221K | 0.2% | 0.01 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $361.1M | -$10.8M | $58.7M | $12.9M | n/a | n/a |
| FY 2024 | 2024-12-31 | $366.1M | $40.8M | $128.3M | $17.1M | n/a | n/a |
| FY 2023 | 2023-12-31 | $307.5M | -$43.4M | -$49.4M | $18.6M | n/a | n/a |
| FY 2022 | 2022-12-31 | $257.8M | -$24.3M | $641K | $12.1M | n/a | n/a |
| FY 2021 | 2021-12-31 | $190.3M | -$51.3M | $6.5M | $16.2M | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-17 from the cover page.
What this page is
Impinj in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Impinj (PI), SEC CIK 1114995, listed on Nasdaq, classified by the SEC as electronic components, nec. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-28.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-09-15.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-27.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-10-28.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-20.JSON and CSV
- Company record
- EDGAR filing index for CIK 1114995Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as electronic components, nec
Other company pages
Datasets
Frequently Asked Questions
How much of PI is sold short?
2,495,742 shares were held short at the 2026-10-15 settlement, 6.1 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is PI's daily short volume?
On 2026-10-28, 89,112 of the 172,530 PI shares reported to FINRA were sold short, 51.6% of the day's reported volume. Short volume is a flow for one day, not a position.
Does PI have fails to deliver?
The SEC's latest file shows 120 PI shares failed to deliver at settlement 2026-09-28. Fails are reported per settlement date and published twice a month with a lag.
Are PI insiders buying or selling?
Insiders at PI reported 3 open-market sells worth $2.0M in the last 90 days and no open-market buys. Latest filing: Valdez Arthur L Jr (Director) on 2026-10-20.
Have PI insiders filed to sell?
24 Form 144 notices on file for PI worth $49.4M at the prices reported; 2 in the last 90 days worth $2.0M. Latest: WASHINGTON MIRON filed on 2026-09-15 to sell 800 shares ($139K) from 2026-09-15.
Who owns 5% or more of PI?
3 holders report 5% or more of PI in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 14.7% of the class (4,495,591 shares), filed 2026-10-27 for an event on 2026-09-30.
What did PI report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Impinj reported revenue of $108.4M, up 10.7% from the same quarter a year earlier, and net income of $12.2M (0.39 diluted EPS). In FY 2025 it generated $58.7M of operating cash flow. As of 2026-06-30, cash was $38.6M against $241.9M of debt.
Which tracked 13F managers own PI?
6 of the 30 tracked 13F managers held PI shares at their latest filing, $189.5M in all. The largest: Izzy Englander's Millennium Management (834K shares, $119.5M), Steve Cohen's Point72 Asset Management (408K shares, $58.5M), Ken Griffin's Citadel Advisors (62K shares, $8.9M), Cliff Asness's AQR Capital Management (9K shares, $1.2M), D. E. Shaw & Co. (8K shares, $1.1M), George Soros's Soros Fund Management (2K shares, $305K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.