GCT Semiconductor (GCTS) Q4 2025 earnings summary

Executive summary

• Achieved key milestones in transitioning from development to commercialization of 5G chipsets, including first commercial shipments exceeding 1,900 units in Q4 2025 and live network deployments in 2025.

• Expanded ecosystem with new strategic partnerships in satellite and IoT connectivity, including a major licensing agreement with a leading satellite provider and partnership with Skylo.

• Gogo launched a broadband 5G air-to-ground service powered by the company's chipset, marking the first network operator deployment.

• Entered into a $20 million convertible note facility to support working capital and production ramp.

Financial highlights

• Q4 2025 revenue increased 76% sequentially from Q3, but was $0.8 million, down 57.5% year-over-year; full year 2025 net revenues declined 68.6% to $2.9 million.

• Cost of net revenue rose 16% to $4.7 million, resulting in negative gross margin for the year; prior year gross margins were 32% and 56%.

• R&D expenses decreased 19% to $14 million, while G&A expenses increased 53% to $16.5 million, driven by credit loss estimates and warrant issuance.

• Full year 2025 net loss was $43.4 million, compared to $12.4 million in 2024.

• Ended 2025 with $0.6 million in cash; subsequent cash balance rose to $9.4 million by February 2026.

Outlook and guidance

• Expects sequential growth in revenue and 5G chipset shipments throughout 2026, with meaningful 5G revenue contribution in the second half as deployments accelerate.

• Gross margin anticipated to improve to high 30s–low 40s percent as volumes ramp in 2026.

• Operating expenses expected to normalize to $8–8.5 million per quarter, with special charges not recurring in 2026.

• Targeting adjusted EBITDA breakeven at $25 million revenue, likely achievable in Q1 2027 depending on customer ramp.