Harmonic (HLIT) Q4 2025 earnings review
Strategic Pivot: Video Sale and Record Bookings Mask Q4 Revenue Drop
Harmonic delivered a transformative quarter, not through current P&L results, but through strategic restructuring and forward-looking indicators. While Q4 Broadband revenue fell 43% YoY to $98.2M, the company announced the sale of its Video business for $145M and reported a massive surge in Broadband bookings ($346.9M), driving a 3.5x book-to-bill ratio. Management has effectively cleared the decks: the drag of the legacy Video business is gone, and the backlog ($574M) is now at record levels, validating the 2026 growth thesis. However, current profitability was weak with GAAP operating margins near zero, and the FY26 revenue guidance ($440-480M) implies a recovery that still falls short of FY24 levels ($488M).
🐂 Bull Case
Bookings skyrocketed to $346.9M in Q4 (vs $97.4M in Q3), driving backlog and deferred revenue to $573.8M (+73% YoY). The 3.5 book-to-bill ratio strongly supports the FY26 growth guidance.
The sale of the Video business for $145M cash removes a lower-growth, lower-multiple segment, transforming Harmonic into a focused broadband technology play with a cleaner balance sheet.
🐻 Bear Case
Broadband revenue collapsed 43% YoY in Q4. Even with the guided 22-33% growth in FY26 ($440-480M), revenue will remain below the FY24 peak of $488M, suggesting the 'recovery' is partial.
GAAP Gross Margins in Broadband fell to 47.0% from 52.7% a year ago, and Adjusted EBITDA margin compressed significantly (12.3% vs 38.4%). Stranded costs from the divestiture (~$10M in FY26) will weigh on near-term profitability.
⚖️ Verdict: 🟢
Bullish. While current financials are ugly (revenue halved, margins compressed), the leading indicators are undeniable. The 3.5x book-to-bill and $145M asset sale fundamentally de-risk the FY26 recovery narrative.
Key Themes
Record Bookings Surge
Accelerating. Harmonic reported $346.9M in bookings for Q4, a massive outlier compared to the ~$90M run-rate of prior quarters. This surge was driven by 'large customer deployment plans' and unified DOCSIS 4.0 ramps, effectively securing the majority of the FY26 revenue guidance ($440-480M) in the backlog.
Margin Pressure & Stranded Costs
Decelerating. Non-GAAP Gross Margin dropped to 47.2% in Q4 from 52.7% a year prior. Furthermore, the Video divestiture leaves 'stranded costs' of ~$10M for FY26. While FY26 Non-GAAP operating income guidance ($74-99M) implies a healthy rebound, the immediate P&L shows significant deleverage.
Strategic Divestiture of Video
Harmonic entered a definitive agreement to sell the Video business for $145M. This transaction removes the cyclical 'Broadcast and Media' exposure (historically ~20-30% of revs) and provides non-dilutive capital to support the Broadband ramp and buybacks.
Tariff Headwinds
The company explicitly included $4.0M of estimated tariff impacts in the FY26 guidance. While manageable within the context of $460M revenue, it represents a persistent drag on gross margins in the hardware-heavy phase of deployments.
Other KPIs
Decelerating. Down 43% YoY from $171.0M in 24Q4, though up sequentially from $90.5M in 25Q3. The severe YoY drop reflects the trough of the spending cycle before the projected 2026 ramp.
Decelerating. Collapsed from $65.7M in 24Q4. EBITDA margin fell to 12.3% from 38.4% last year, driven by lost operating leverage on lower volume.
Accelerating. Up 73% YoY from $332.3M. This buildup provides exceptionally high visibility into FY26, covering nearly the entire low-end of FY26 revenue guidance.
Guidance
Accelerating. Implies ~22% to 33% YoY growth vs FY25 Broadband revenue of $360.5M. This confirms the 'cycle bottom' is past, though it remains below FY24 levels.
Stable. Represents modest sequential growth from Q4's $98.2M. Implies the ramp will be back-end weighted in 2026.
Accelerating. A significant improvement from Q4's 47.2%, driven by volume leverage and mix shift, despite a projected $4M tariff headwind.
Accelerating. At the midpoint ($86.5M), this implies an operating margin of ~18.8%, recovering from the single-digit lows of 2025.
Key Questions
Backlog Conversion Timing
With backlog covering >100% of the low-end FY26 revenue guide, why is the Q1 guide ($100-105M) only showing modest sequential growth? Is the deployment schedule heavily back-loaded to H2?
Stranded Cost Mitigation
You identified ~$10M in stranded costs for FY26 related to the Video divestiture. What is the specific timeline and plan to eliminate these costs to protect 2027 margins?
Gross Margin Bridge
Q4 Gross Margins were 47%. The FY26 guide calls for 51-53%. Can you bridge the gap? How much relies on software mix vs. simple manufacturing volume leverage?