Mercury Systems, Inc. (MRCY) | The Buildout — AI Infrastructure
The Verdict
Mercury designs mission‑critical processing systems that sit at the edge, where signals and data are first collected. It buys semiconductors from Intel, AMD, and NVIDIA, integrates them into ruggedized modules and secure servers, and sells to prime defense contractors like RTX and Lockheed Martin. Its Common Processing Architecture platform is the company’s bet on becoming the standard for secure edge processing, backed by DMEA‑certified facilities that few competitors can replicate.
| Market Cap | — |
| Revenue (TTM) | $967M |
| Revenue Growth | +9.0% |
| EBITDA Margin (TTM) | 9.0% |
| Net Debt | $322M |
| Earnings Beats | 6 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Record backlog of $1.6B, up 18% YoY, with the 12‑month portion rising 10.3% sequentially.
- Domestic revenue grew 17% YoY, showing core U.S. business accelerating without defense budget tailwinds.
- Book‑to‑bill well above 1 signals demand outstripping shipments; trailing‑12‑month bookings also set a record at $1.23B.
- Management is building a beat‑and‑raise track record, underpinned by conservative guidance that excludes pull‑forwards until material is in‑hand.
- Low‑margin development backlog is burning off, clearing the path to targeted low‑mid 20% EBITDA margins.
What We’re Watching
- RTX concentration hit 17% in Q3 — a slowdown in key programs would cut disproportionately into revenue.
- Golden Dome and rearmament tailwinds may not materialize by end of CY2026 as management hopes.
- Sole‑source suppliers can terminate with 30 days’ notice and discontinue components with 180 days’ notice; a disruption could choke deliveries.
- Legacy low‑margin backlog still converting, and quarterly inventory reserve charges (e.g., $3M in Q3) can cause margin hiccups.
The thesis is strengthening: Mercury has shifted from a development‑heavy past into a production‑driven growth cycle with record bookings, expanding margins, and a credible path toward long‑term margin targets. The open question is whether the demand surge is sustainable and whether pull‑forward revenue represents a structural improvement or one‑time acceleration.
Earnings Beat
Mercury reported Q3 FY2026 revenue of $235.8 million, up 11.5% organically, and gross margin of 29.3%, a 230‑basis‑point improvement year‑over‑year. The standout metric was record bookings of $348.3 million and a book‑to‑bill of 1.48, pushing backlog to approximately $1.6 billion.
| Metric | Q3 FY2026 | Q2 FY2026 | Q3 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $236M | $233M | $211M | +11.5% |
| Gross margin | 25.2% | 26.0% | 27.0% | -180bps |
| EBITDA | $25M | $8M | $3M | +876.9% |
| EPS | $-0.05 | $-0.25 | $-0.33 | −85.1% |
| Book‑to‑bill | 1.48 | n/a | n/a | — |
none of those tailwinds are reflected in any of our bookings or our outlook, and we view them as all additive to the target profile.— Bill Ballhaus, CEO, 2026-05-05
Management tone: Management projected confidence grounded in a consistent pattern of execution. The tone was more buoyant than prior quarters, with guidance raised across the board. They provided direct answers on margin progression and working capital, while remaining candidly evasive on program‑specific impacts like the SCAR stop‑work order.
Management Guidance
For FY2026, management raised organic revenue growth guidance to 'approaching mid‑single digits' from low single digits, and adjusted EBITDA margin to 'mid‑teens' from 'approaching mid‑teens'. They reaffirmed positive free cash flow for the full year and expect Q4 free cash flow to be positive. The outlook does not include potential tailwinds from Golden Dome or rearmament.
Trajectory
Revenue has been volatile as programs moved from development to production. After a trough in early FY2025, quarterly revenue climbed from $204.4M to a high of $273.1M in Q4 FY2025 before settling around $230‑235M in recent quarters. Q3 FY2026 benefited from a $25M pull‑forward. GAAP EBITDA margin, which was in the low single digits for much of FY2025, jumped to 15.9% in Q4 FY2025 and remains volatile, dipping to 4.6% and 3.2% in Q1 and Q2 FY2026 before recovering to 10.8% in Q3, as the production mix improves and low‑margin development programs convert.
The Model
The model projects FY+1 revenue of $1,050 million and EBITDA of $131 million, a 12.5% margin. FY+2 sees revenue of $1,160 million and EBITDA of $183 million, lifting the margin to 15.8%. Near‑term growth is anchored by the record backlog and production ramp; FY+2 reflects further margin expansion as legacy low‑margin programs are replaced.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $912M | $1.1B | $1.2B |
| YoY Growth | — | +15.1% | +10.5% |
| EBITDA | $62M | $131M | $183M |
| EBITDA Margin | 6.8% | 12.5% | 15.8% |
Projections are the median of 5 independent model runs. The model’s revenue sits 0.2% above analyst consensus.
For FY2026, management raised organic revenue growth guidance to 'approaching mid‑single digits' from low single digits, and adjusted EBITDA margin to 'mid‑teens' from 'approaching mid‑teens'. They reaffirmed positive free cash flow for the full year and expect Q4 free cash flow to be positive. The outlook does not include potential tailwinds from Golden Dome or rearmament.
What Could Go Right — and Wrong
- Sustained book‑to‑bill above 1.2 signals continued production momentum and pushes backlog to new records.
- Golden Dome and rearmament contracts awarded, adding significant orders not currently in the outlook.
- Gross margins cross 30% by FY2027 as legacy backlog converts, lifting EBITDA margins closer to the 20% target.
- RTX concentration declines as other customer programs ramp, diversifying revenue.
- Additional large production orders for CPA, similar to the Blue Raven 1,000‑unit contract, validate the platform's franchise.
- RTX reduces LTAMDS spending or shifts processing in‑house, materially reducing revenue.
- Supply‑chain 'pull‑left' strategy falters, causing revenue lumpiness and missed guidance.
- Book‑to‑bill drops below 1.0 as the demand surge proves temporary, eroding backlog growth.
- Sole‑source component discontinuation forces redesigns, causing program delays and revenue shortfalls.
Looking Ahead
The next twelve months will test whether the production‑driven growth cycle can sustain momentum. Capacity expansion in Phoenix and the integration of the acquired process provider should de‑risk key programs, while the Blue Raven 1,000‑unit CPA order begins multi‑year deliveries. Management expects tailwinds from Golden Dome and defense budgets to potentially materialize by late calendar 2026, which could accelerate bookings. Quarterly lumpiness may persist despite supply‑chain improvements.
- Q4 FY2026Q4 FY2026 earnings and bookings — Tests whether bookings surpass Q3's record $348M and full‑year guidance is met.
- Late CY2026Potential Golden Dome awards — Tailwinds could translate into specific contracts, providing upside not yet in bookings.
- Through FY2027Low‑margin backlog burns off — Legacy development programs nearly gone, enabling margin expansion to 20%+.
- FY2027Blue Raven 1,000‑unit CPA deliveries begin — Multi‑year production contract starts, de‑risking medium‑term revenue.
- FY2027CPA form‑factor expansion — New secure chiplet variants could open larger TAM for edge processing.
- FY2027 and beyondDistributed AI at the edge — Long‑term vision; any AI‑related design wins would validate the platform.
Financials
Annual Summary
| Metric | FY2025 | TTM |
|---|---|---|
| Revenue | $912M | $967M |
| Gross Margin | 27.6% | 27.7% |
| EBITDA | $62M | $119M |
| EBITDA Margin | 6.8% | 9.0% |
| Net Income | −$38M | −$14M |
| Free Cash Flow | $119M | $217M |
| Net Cash | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)27.7%
- EBITDA Margin (TTM)9.0%
- Net Margin (TTM)-1.5%
- ROIC0.5%
- FCF Conversion81.2%
- SBC / Revenue3.6%
The Company
Mercury Systems designs and delivers mission‑critical processing systems to the edge — where signals and data are first collected — for aerospace and defense. It buys FPGAs, processors, and ASICs from semiconductor companies, integrates them into ruggedized modules, sub‑assemblies, and integrated solutions, and sells those to prime defense contractors like RTX, Lockheed Martin, and Northrop Grumman. Its products go into radars, electronic warfare, missile seekers, C4I, avionics, and space payloads.
The company operates more than 20 facilities, including DMEA‑certified trusted design and manufacturing sites in Andover, MA and Phoenix, AZ that provide a security moat. It runs three domestic business units — Signal Technologies, Processing Technologies, and Integrated Processing Solutions — plus an International unit with facilities in the UK, Spain, and Switzerland. Production is capital‑light, with most factories running on single shifts that can be expanded to meet demand.
Business Segments
Competitive Landscape
Mercury competes with in‑house design teams at prime contractors like Lockheed and RTX, as well as defense electronics firms such as Curtiss‑Wright, BAE Systems, and Leonardo DRS. Its DMEA‑certified trusted manufacturing facilities and expertise in open‑standards processing create a moat that few competitors can replicate, though the risk of primes bringing processing in‑house remains.
- Curtiss‑Wright CorporationCompetitor in defense electronics and embedded systems, mentioned in 10‑K.
- BAE SystemsCompetitor in rugged processing and electronic warfare systems, named in filings.
- Leonardo DRSCompetitor in defense electronics, referenced alongside other firms.
- Kontron (KTN.DE)Competitor identified in 10‑K; competes in embedded computing.
- In‑house design teams (Lockheed, RTX, Northrop)Can bring processing in‑house for key programs, reducing Mercury’s addressable market.
Supply Chain
Mercury sits between semiconductor component suppliers and defense prime contractors, integrating and ruggedizing processing systems. Its DMEA‑certified facilities are a moat, and it relies on sole‑source suppliers for custom ASICs, SRAM, and microprocessors.
More on MRCY: Earnings preview