Ambiq Micro Inc. posted a net loss of US$7.1 million for the quarter ended Jun 30, narrowing from a US$8.5 million deficit a year earlier as surging demand for ultra-low-power semiconductors used in edge artificial-intelligence applications propelled revenue almost 90 percent year-on-year to US$33.9 million.

Earnings per share came in at a negative US$0.32, compared with a negative US$18.89 a year ago, reflecting the enlarged share base following last quarter’s equity offering. The company did not declare a dividend.

Gross profit more than doubled to US$15.3 million, lifting gross margin to 45.0 percent from 40.1 percent a year earlier. Operating expenses climbed 50 percent YoY to US$24.0 million, driven mainly by higher research and development spending and stock-based compensation. On a non-GAAP basis, the quarterly loss narrowed to US$1.8 million.

Management attributed the top-line expansion to broad-based strength across customers and product families as well as new software releases that ease the deployment of small-footprint AI models on the company’s Apollo system-on-chip line. Profitability was tempered by industry-wide supply constraints and continued investment in product development.

During the quarter, Ambiq raised about US$168 million net through an upsized public share sale, boosting cash and equivalents to US$366.8 million. It also unveiled new software tools—heliaCORE, compressionKIT and the open-source heliaPROFILER—and announced a planned secondary listing on the Singapore Exchange to widen its investor base in Asia.

Chief executive Fumihide Esaka said the firm is seeing a “step-change” in market demand and expects further momentum in the second half despite supply tightness, noting that management is accelerating capacity expansion to support customers and aiming to more than double second-half net sales from last year’s level. For the current quarter ending Sep 30, Ambiq projects revenue of US$36 million–US$37 million, a sixth straight sequential increase, with a non-GAAP gross margin of 46.5–47.5 percent and a per-share loss of US$0.20–US$0.12.