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Ambiq Micro, Inc. (AMBQ) closed its initial public offering of 4.6 million shares at $24.00 per share, generating gross proceeds of $110.4 million before underwriting fees and expenses, according to a company statement.
The semiconductor company sold 4 million shares initially and an additional 600,000 shares through the full exercise of underwriters’ option to purchase additional shares. Trading commenced on the New York Stock Exchange on July 30, 2025, under the ticker symbol "AMBQ."
BofA Securities and UBS Investment Bank served as joint lead book-running managers for the offering, while Needham & Company and Stifel acted as joint book-running managers.
The Securities and Exchange Commission declared the registration statement effective on July 29, 2025. The offering was conducted through a prospectus available from the underwriters.
Austin-based Ambiq develops ultra-low-power semiconductor solutions for edge artificial intelligence applications. The company’s technology is built on what it calls subthreshold power optimized technology, or SPOT. According to the company, its semiconductors have been integrated into more than 270 million devices.