Napco Security (NSSC) hit $103M recurring revenue. The radio that keeps paying is why.

The new CEO Kevin Buchel said one thing on this call that deserves to be the headline: "Radio sold today becomes recurring revenue tomorrow." That's the entire Napco investment thesis in eight words. The hardware business earns maybe 20% gross margins. The recurring service business earns above 90%. Every radio Napco ships eventually converts into a monthly subscription. The 40% growth in radio sales in Q4 doesn't show up immediately in the margins — there's roughly a five to seven month lag between shipping to distribution and the monthly fee activating. But it absolutely shows up in next year's recurring revenue run rate.

What they reported

Full fiscal year 2026: record revenue of $202.3 million, surpassing $200 million for the first time. Recurring service revenue for the year: $97.5 million, up 13%, with gross margins above 90% throughout. Q4 net revenue: $55.8 million, up 10% YoY. Q4 recurring service revenue: $25.3 million, up 12.9%. Q4 GAAP gross margin: 61.3%, which included approximately 600 basis points of benefit from AIIPA tariff refunds — so the underlying margin without that benefit is closer to 55%, still solid. Q4 GAAP net income: $17.8 million, up 52.7% YoY. Non-GAAP EPS for the full year: $1.60, up 34.5%. Adjusted EBITDA for the full year: $66.7 million, 33% margin. Free cash flow for the full year: $59.2 million. Cash and securities: $138 million. Debt: zero.

Beat or miss

Beat. Buchel described it as "another outstanding quarter and a strong finish to fiscal 26." The recurring revenue run rate hit $103 million based on July 2026 data — a milestone management had been tracking toward. Both the Q4 and full-year results came in ahead of expectations. The guidance raise on the dividend — from $0.15 to $0.17 per quarter, a 13.3% increase — signals management's confidence in the cash generation trajectory going forward.

The flywheel nobody explains properly

Here's how Napco's business actually works, because the quarterly breakdown obscures it. StarLink radios are cellular communicators for commercial fire alarm and security systems. When a building installs a new alarm panel or upgrades from a copper phone line to cellular, they buy a StarLink radio — a piece of hardware Napco sells for roughly 20% gross margin. That radio then generates a monthly monitoring fee — recurring revenue with 90%+ gross margins — every month for the life of the installation.

The conversion from copper phone lines to cellular creates a massive multi-year tailwind for this business. Management estimates over 2 million commercial buildings still need to convert. That's not a number they can capture all at once — the conversion happens gradually, one alarm service contract at a time. But it means the addressable hardware upgrade market is enormous relative to Napco's current scale, and every hardware sale converts into perpetual recurring revenue. The 40% Q4 radio growth rate isn't just a good quarter. It's five to seven months of future recurring revenue being loaded into the pipeline right now.

The upcoming MVP cloud-based access control platform adds a second recurring revenue stream. It integrates with Napco's existing locking hardware to provide hosted access control as a subscription. Management has been careful not to overpromise — they've said to expect meaningful contribution by late 2026, not immediately. But the structure is identical to the StarLink model: hardware sale converts to recurring service revenue, with the service margin far exceeding the hardware margin.

The supply chain risk nobody asked about directly

CFO Andrew Vuono flagged that data center expansion is driving component cost pressure on the electronic parts Napco uses. Not a current shipment problem — Buchel was explicit that they haven't been impacted and that he's personally negotiating with supplier presidents to hold pricing. But the dynamic is worth understanding: AI infrastructure buildout is creating competition for the same electronic components that go into security equipment. Napco has navigated this before, in COVID and in previous component shortages. The playbook is senior-level supplier relationships and early purchase orders. Whether that holds if the supply crunch intensifies is the operational risk to watch.

The one thing beginners should take away

Napco is a relatively boring company doing something structurally excellent: converting one-time hardware sales into permanent recurring revenue at 90%-plus gross margins. The $103 million annualized run rate isn't a projection — it's based on July's actual monthly recurring billing, multiplied by twelve. Every StarLink radio that shipped in Q4 at 40% growth becomes part of that run rate approximately six months from now. The zero-debt balance sheet, the dividend increase, and the 34.5% non-GAAP EPS growth all describe the same thing: a business whose economics improve quietly and permanently every time a radio gets activated. That's the kind of compounding that doesn't make headlines but absolutely shows up in five-year stock charts.