Impinj (PI) Q3 2026 earnings review
Impinj chip sales hit a record, while fourth-quarter plans cool
Impinj, which makes radio-frequency tracking chips for retail clothes and parcels, set a sales record while paying off its maturing debt. Revenue grew 17% from a year ago, and stripping out last quarter's annual patent fee shows product sales jumped 23% from the second quarter by our math. Chief executive Chris Diorio pointed to record chip volumes and newer M800 chips, which lifted gross margin excluding one-offs to 55%.
| Revenue | $112.1M +16.7% from a year ago |
|---|---|
| Product revenue (vs Q2 excluding patent fee) | +22.7% from last quarter, by our math |
| Gross margin, excluding one-offs | 54.9% +1.9 percentage points from a year ago |
| Fourth-quarter revenue outlook | $104.0–107.0M middle of the range: +13.6% from a year ago |
⚖️ Verdict: 🟢 Bullish
The story got better because record product shipments and wider margins proved that growth does not rely on the annual patent fee, while paying off $57 million of notes removed the 2021 debt overhang. One caution: the fourth-quarter outlook has sales dropping 6% from the third quarter by our math, matching the usual post-holiday slowdown in retail and logistics.
The question now is whether the past two quarters of surging orders mark lasting demand from grocers and retailers or just label makers refilling their shelves. If demand is lasting, growth stays in the mid-teens next year; if it was restocking, another first-quarter inventory glut could follow. The first-quarter outlook issued in February will settle it.
🐂 Bull Case
Product Sales Jumped 23% Without the Patent Fee
Impinj makes tiny radio chips, called RAIN RFID endpoint integrated circuits (ICs), that track retail clothing, parcels and groceries. Chief executive Chris Diorio said "endpoint IC revenue and unit volumes, as well as total revenue, all setting new quarterly records" drove the quarter, helped by "resilient retail demand" and "growth at our lighthouse accounts".
- Third-quarter revenue: $112.1 million, up 16.7% from a year ago and 4.8% above the middle of the company's outlook
- Sequential headline revenue growth: up 3.4% from $108.4 million in the second quarter
- Sequential product revenue growth: up 22.7% from $91.4 million by our math, after stripping last quarter's $17 million annual patent fee from rival chipmaker NXP
The like-for-like jump matters because the second quarter included that once-a-year patent payment, while the third quarter had none. Beating the outlook by 4.8% also topped the company's 3.1% average beat over the last four quarters, because back-to-back record chip orders turned into shipments. What to watch: the exact split between endpoint chip sales and reader systems sales in the quarterly filing, which will show whether reader hardware also grew.
Newer M800 Tag Chips Lifted Gross Margin
Impinj is moving customers to its newest tag chip, the M800, and to Gen2X, a software upgrade that helps scanners read tags faster. Those newer products cost less per chip to make. Cost of revenue — the direct cost of making chips and readers — fell by 2.4 percentage points of revenue from a year ago, to 47.2%. That drop lifted reported gross margin by 2.5 percentage points to 52.8%.
Excluding one-offs, gross margin reached 54.9%, up 1.9 percentage points from a year ago. Against last quarter's 53.6% product gross margin (which leaves out the zero-cost patent fee), the measure rose 1.3 percentage points by our math, matching the 1.2-point gain management aimed for. What to watch: product gross margin on the conference call, where another sequential rise would confirm that custom logistics chips are still lifting profitability.
Impinj Paid Off Almost All Remaining 2021 Debt
Over the past year, the radio-chip maker has been paying down its 2021 convertible notes — debt that can turn into shares — after issuing new notes in 2025. After retiring $47.0 million of those notes in the first half of the year, Impinj paid off another $56.5 million in the third quarter by our math, bringing the nine-month repayment to $103.6 million.
That payment cut the current portion of long-term debt from $57.0 million in June to $1.0 million at the end of September, while total debt dropped from $241.9 million to $186.3 million. Retiring the notes caused a $1.8 million debt-conversion charge this quarter, but the 2021 debt overhang is now gone. What to watch: interest expense in the fourth quarter, which the outlook puts at $0.4 million, down from $0.6 million in the third quarter.
Positives this quarter didn't test
Three standing growth drivers depend on customer rollout details that Impinj gives on its conference call or in its quarterly filing rather than in the earnings release.
- Custom chip for its second-largest logistics customer: management previously expected full conversion in the third quarter; the call remarks will confirm whether the switch is complete.
- Grocery store rollouts: three of the five largest US grocers were running pilots or deployments last quarter; store and category counts on the call will show if food volumes are picking up.
- Complete tracking solutions: the chief executive has made selling full hardware-and-software systems his personal focus; any disclosed customer wins or software revenue on the call would test that push.
🐻 Bear Case
Fourth-Quarter Plan Points to a Seasonal Drop
"M800’s market strength, resilient retail demand, growth at our lighthouse accounts and Gen2X momentum all contributed to those record results, and we see those trends continuing," Diorio said in the release. Yet the fourth-quarter outlook calls for revenue to drop 5.9% from the third quarter at the middle of the range, to $105.5 million, with adjusted EBITDA — profit before interest, tax, depreciation and stock pay — falling 18.8% to $19.9 million.
A fourth-quarter dip is normal because retailers finish tagging holiday goods in the autumn, and the company's large logistics customer buys fewer custom chips late in the year. Even so, the sequential drop matches the standing concern that third-quarter demand was boosted by label partners rebuilding inventory and retailers pulling orders forward ahead of tariffs. What to watch: the first-quarter revenue outlook issued in February, which will show whether customer warehouses are overstocked again.
Stock Pay Still Eats Most Reported Profit
The Seattle company judges its performance using profit excluding one-offs and stock-based compensation (employee pay given in shares). In the third quarter, stock-based compensation rose 10.7% from a year ago to $16.1 million, or 14.4% of revenue. Because of that expense, reported operating income was $4.6 million, or 4.1% of revenue, while adjusted EBITDA reached $24.5 million.
Over the first nine months of 2026, Impinj posted a small reported operating loss of $73 thousand despite record sales, as stock pay totaled $47.1 million. Those share grants, along with notes exchanged for stock last year, pushed basic share count up 4.4% from a year ago to 30.6 million and diluted shares up 7.4% to 31.5 million. What to watch: fourth-quarter stock pay against the $16.2 million outlook, to see if dilution slows.
Risks this quarter didn't answer
Five standing concerns from prior quarters could not be tested from the third-quarter earnings release alone.
- NXP patent fee renewal: NXP can cancel its ~$17–18 million annual payment on April 1, 2027 if its new chip designs around Impinj's patents; the second-quarter 2027 results will settle it.
- First-quarter inventory glut: logistics channel corrections hit the first quarter in both 2025 and 2026; the first-quarter 2027 outlook next quarter will test whether it happens a third time.
- Rival chip qualification: whether a competitor's new tag chip takes back market share once university lab testing finishes; commentary on the call will give the next read.
- Reader systems sales: hardware revenue fell from a year ago in the second quarter; the quarterly filing's revenue table will show if it recovered in the third quarter.
- Grocery rollout pace: volume targets have slipped twice since 2024; management's call remarks will show whether grocer timelines held steady this quarter.
👓 Other Themes
Prepaid Assets Jumped $51 Million in Three Months
On the balance sheet, prepaid expenses and other current assets — money paid in advance for goods or services not yet received — jumped from $9.0 million in June to $60.1 million in September, a $51.1 million increase by our math. However, the operating cash flow statement shows only a $1.9 million cash outflow for prepaid assets over nine months, leaving the cause of the jump unexplained until the quarterly filing.
💲 Other KPIs
Free cash flow — operating cash left after buying equipment — rose 14.7% from a year ago to $20.6 million, or 18.4% of revenue. That stepped down from $29.2 million in the second quarter (which included the patent fee) as capital spending doubled to $5.0 million. Nine-month free cash flow reached $52.0 million, up from $32.3 million.
Stockpiled chips and readers on the balance sheet fell 8.9% from the second quarter's $91.5 million peak and dropped 10.0% from $92.6 million a year ago, by our math. After building raw silicon wafer stock in the first half of the year, the radio-chip maker drew down inventory to meet record third-quarter shipping volumes.
Uncollected customer bills rose 9.9% from $71.1 million in the second quarter and climbed 27.7% from $61.2 million a year ago, by our math. Receivables grew faster than the 16.7% rise in revenue from a year ago, soaking up $7.4 million of operating cash over the first nine months of 2026.
🔮 Guidance
New. The plan calls for $105.5 million at the middle of the range, up 13.6% from a year ago but down 5.9% from the third quarter, by our math. Seasonal retail and logistics slowdowns drive the sequential dip. Impinj has beaten its revenue midpoint for four straight quarters by an average of 3.1%; if the pattern holds, fourth-quarter sales would reach $108.8 million by our math.
New. At the $19.9 million middle of the range, operating cash profit before one-offs rises 21.1% from a year ago but drops 18.8% from the third quarter, by our math. That puts the margin at 18.9% of sales, down from 21.9% this quarter, as lower seasonal revenue spreads across fixed research and overhead costs.
New. The outlook midpoint of $18.4 million is up 17.6% from $15.6 million a year ago, but down 16.8% from the third quarter's $22.1 million, by our math. The sequential drop mirrors the lower fourth-quarter revenue plan while stock-based compensation stays high at $16.2 million.
New. The $0.58 midpoint represents a 16.0% increase from $0.50 a year ago and a 15.9% drop from $0.69 in the third quarter, by our math. The calculation adds back $0.4 million of convertible note interest and spreads profit across 32.5 to 32.7 million shares.
New. Reported profit at the $2.0 million midpoint compares with a $1.1 million loss in the fourth quarter of 2025 and $4.7 million of profit in the third quarter. The outlook assumes no new debt-conversion charges after the 2021 notes were paid down in the third quarter.
New. At the $0.06 midpoint on 31.8 to 32.0 million shares, reported earnings per share stay positive for a third straight quarter, compared with a $0.04 per share loss a year ago and $0.15 in the third quarter.
❓ Key Questions
What caused the $51 million jump in prepaid current assets?
Prepaid expenses and other current assets rose from $9.0 million in June to $60.1 million in September, yet the cash flow statement shows only a $1.9 million operating outflow for prepaids. Was an investment or deposit reclassified into current assets?
Did the second-largest logistics customer finish switching to custom chips?
Last quarter, management expected this major parcel customer to finish converting to Impinj's custom chip in the third quarter. Confirming full conversion would show how much of the 23% product sales jump came from filling that customer's supply chain.
How much did endpoint chips and reader systems each grow?
The earnings release notes record endpoint chip revenue and volumes but gives no dollar split between tag chips and reader systems. Because reader hardware sales fell from a year ago in the second quarter, the split shows whether both product lines are growing.
Are chip orders still at record levels heading into 2027?
All-time-high chip orders in the first and second quarters drove the third-quarter beat, but the release does not mention third-quarter orders. Order trends will tell whether label partners have finished restocking their warehouses ahead of the slower winter season.