Impinj, Inc.

Impinj makes the tiny silicon that turns items in retail, healthcare, and logistics into scannable data — think Uniqlo store tags, hospital inventory, package tracking. The pitch used to be a secular RFID ramp; the last twelve months have been growth stalling out and insiders quietly walking away.

• Revenue growth has flatlined at exactly the wrong moment: last quarter came in at $74.25M, essentially unchanged from the same quarter a year ago — for a "26 years and just getting going" narrative, a zero-growth print undercuts the whole thesis and is why the multiple has re-rated hard.
• Insiders are voting with their feet: in June alone, one director sold roughly $11M of stock in two blocks ($4.6M and $6.4M), and CTO Chris Diorio moved another 10,000 shares out as a July gift — that's a founder-adjacent cohort measurably trimming exposure as the fundamentals soften.
• Margins are decaying faster than the top line suggests: gross margin has slipped from ~58% to ~49% over four quarters and the operating line just flipped to a 20% loss last quarter — negative operating leverage on a hardware business with a fixed cost base, exactly the pattern that stops being a one-quarter thing.
• Cushion buys time but doesn't fix the story: modest debt-to-equity keeps going-concern conversation off the table and free cash flow is barely positive — so this doesn't blow up, it just risks grinding sideways until the retail RFID cycle reaccelerates.

The July 29 print is the whole thing. A quiet beat with in-line guidance keeps this a slow bleed; genuine sequential unit-volume growth from a big retail rollout is what restarts the tape and pulls the insider narrative back the other way. A repeat flat quarter plus another director sale into the release is the sell tell.