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 and live network deployments in 2025.

• Expanded ecosystem with new strategic partnerships in satellite and IoT connectivity, including Skylo, positioning for broader market penetration.

• Secured a major licensing agreement with a leading satellite communications provider for 5G/4G chipset integration, with shipments expected to begin in H2 2026 and annual volumes projected at over one million units.

• Gogo launched a broadband 5G air-to-ground service powered by the company's chipset, representing the first network operator deployment and validating technology in demanding environments.

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

Financial highlights

• Q4 2025 net revenues were $0.8 million, down 57.5% year-over-year, but increased 76% sequentially from Q3, reflecting early 5G commercialization momentum.

• Full year 2025 net revenues declined 68.6% year-over-year to $2.9 million, due to lower product and service sales during the transition.

• Cost of net revenue rose 16% to $4.7 million, resulting in negative gross margin for the year; Q4 and full year 2025 gross margins were negative.

• Q4 2025 operating expenses rose 35% to $10.7 million; full year 2025 operating expenses increased 90.8% to $34.7 million.

• 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 as more customers move to commercial deployment.

• Anticipates meaningful 5G revenue contribution in the second half of 2026 as deployments accelerate.

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

• Operating expenses projected to normalize to $8–8.5 million per quarter, with special charges not expected to recur.

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