Proto Labs turns the corner: reaccelerated growth, a production pivot, and the Physical AI story
Record revenue, six-year-high EPS, and Injection Molding back in double digits — the transformation is starting to pay.
PRLB · Earnings Call · 2026-07-31
For three consecutive quarters, Proto Labs has delivered double-digit revenue growth — a cadence it hadn't sustained since its high-growth years. The Q2 2026 report, though, is the first that makes the case in numbers rather than promises: record revenue of $149.3 million, up 10.2% year-over-year in constant currencies, a 200-basis-point gross margin expansion, and non-GAAP EPS of $0.60 — its highest since Q3 2020. The market is voting with it: the stock is up about 30% over the last 90 trading days, its strongest sustained move in years.
## Injection Molding finally reaccelerates
The single most important change in the quarter was in the legacy engine. Injection Molding, a drag for years as prototyping demand softened, grew 12.9% in constant currency — an inflection rather than a blip. CEO Suresh Krishna framed it as the payoff of patient, multi-quarter work:
“Injection Molding was a standout performer in the second quarter, growing 13% year-over-year, with strength in telecommunications, driven by data center demand and aerospace and defense. This meaningful acceleration is important because it reflects the impact of the work we have been doing to improve quality, strengthen customer engagement and drive larger orders.” — Suresh Krishna, President and Chief Executive Officer · 2026-07-31
The pivot to production has been telegraphed for a year. In February, Krishna explained that ISO 13485 certification would let the company "do traceability, process validation, and inspection," and pivot Injection Molding toward higher-value production work. By May, CFO Dan Schumacher said simply: “there's less prototype that we're doing, and there's more production that we're doing.” — Dan Schumacher, Chief Financial Officer · 2026-05-01 This quarter, that strategy shows up in the P&L — even the flat network achieved a gross margin of 33.6%, up both sequentially and year-over-year.
## Physical AI and the early-cycle wave
The more novel development is how Proto Labs is positioning itself. The standout new keyword of the quarter is Physical AI — applying AI to physical manufacturing rather than software — a category it claims it can lead, built on decades of digital-thread data. Krishna framed it directly: “Proto Labs is at the forefront of what is called physical AI, the application of AI to the physical world, in our case, manufacturing.” — Suresh Krishna, President and Chief Executive Officer · 2026-07-31 It's a sharp departure from its old branding as a pure prototyping shop, and it matches where the growth is coming from. Aerospace & defense is now about 25% of revenue and grew roughly 20% in the quarter; drones, satellites, and space appear repeatedly, alongside the data centers demand driving the broader industrial tape. Krishna stressed the runway:
This early cycle framing — a top keyword this quarter — implies a durable runway: newer primes like Anduril and legacy players like Lockheed and AeroVironment are pulling Proto Labs from prototyping into full production programs. The company is explicitly aligning itself with a multi-year innovation cycle that lines up with the global theme of Earnings growth dominating the market's top-keyword list this quarter. ## The numbers back the narrative The margin story is the cleanest evidence this isn't just topline luck. Non-GAAP gross margin reached 46.8% in Q2, up 200 basis points year-over-year, with both factory and network contributing. Gross margin is back above the levels that defined its pre-decline profile. Operating leverage did the rest: adjusted EBITDA margin rose to 16.8% from 14.6%, and operating margin expanded 340 basis points year-over-year. The company raised full-year revenue growth guidance to 8%–10%, a clear vote of confidence after a first half that grew 10%. As Dan Schumacher noted, “$0.60 is the highest adjusted EPS figure we've reported since the third quarter of 2020.” — Dan Schumacher, Chief Financial Officer · 2026-07-31 Price-to-sales of 2.5x is near a multi-quarter high. The balance sheet gives management optionality: liabilities-to-assets of just 12.3% and $162.9 million of cash with zero debt. Schumacher confirmed a "healthy pipeline of M&A opportunities" to expand production capability. ## What to watch The caveats are real. Europe, while improving (+7.3% constant currency), remains a profitability drag, and flat network revenue is a reminder that the factory is doing the heavy lifting. Krishna is measured, calling Europe "a mid- to long-term effort" and noting the company is "in the early stages" of the transformation. The key question for investors is whether the reacceleration is durable or a function of the A&D supercycle — and whether 3D printing, still down 2.7%, can catch up with the other service lines. For now, the evidence points to a genuine inflection: three straight quarters of double-digit growth, a reaccelerating flagship product, a fresh AI narrative, and an executing management team. The stock's 90-day climb suggests the market agrees this time is different.We are absolutely in the front end of innovation, and there is more innovation activity, and we're in the early cycle of a lot of industries which are early in innovation. You think about drones, robotics, data centers, satellites, rockets, all of those are early cycle and with a long tail ahead of us.