Ambiq Announces Closing of its Upsized Initial Public Offering and Full Exercise of Underwriters’ Option to Purchase Additional Shares

Rhea-AI Summary

Ambiq (NYSE:AMBQ), a leader in ultra-low-power semiconductor solutions for edge AI, has successfully completed its upsized Initial Public Offering (IPO). The company sold 4.6 million shares at $24.00 per share, which includes the full exercise of the underwriters' option to purchase 600,000 additional shares.

The IPO generated gross proceeds of $110.4 million before deducting underwriting discounts and other expenses. Trading of Ambiq shares 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, with Needham & Company and Stifel acting as joint book-running managers.

Positive

• Successfully raised $110.4 million in gross proceeds from IPO
• Achieved full exercise of underwriters' option, indicating strong demand
• Upsized offering from original plan, demonstrating market interest
• Strategic positioning in growing edge AI semiconductor market

Negative

• Potential dilution for existing shareholders
• Market volatility risks as a newly public company
• Additional regulatory compliance costs as a public company

News Market Reaction – AMBQ

-9.90%

36 alerts

-9.90% News Effect

+17.4% Peak Tracked

-15.0% Trough Tracked

-$96M Valuation Impact

$878M Market Cap

0.1x Rel. Volume

On the day this news was published, AMBQ declined 9.90%, reflecting a notable negative market reaction. Argus tracked a peak move of +17.4% during that session. Argus tracked a trough of -15.0% from its starting point during tracking. Our momentum scanner triggered 36 alerts that day, indicating elevated trading interest and price volatility. This price movement removed approximately $96M from the company's valuation, bringing the market cap to $878M at that time.

Data tracked by StockTitan Argus on the day of publication.

AUSTIN, Texas, July 31, 2025 (GLOBE NEWSWIRE) -- Ambiq Micro, Inc. (“Ambiq”), a technology leader in ultra-low-power semiconductor solutions for edge AI, today announced the closing of its upsized initial public offering of 4,600,000 shares of its common stock, including the full exercise of the underwriters’ option to purchase 600,000 additional shares, at a public offering price of $24.00 per share. The gross proceeds to Ambiq from the offering, before deducting underwriting discounts and commissions and other offering expenses payable by Ambiq, were $110.4 million. The shares began trading on the New York Stock Exchange under the ticker symbol “AMBQ” on July 30, 2025.

BofA Securities and UBS Investment Bank acted as joint lead book-running managers for the offering. Needham & Company and Stifel acted as joint book-running managers for the offering.

A registration statement relating to the offering of securities was declared effective by the U.S. Securities and Exchange Commission on July 29, 2025. The offering was made only by means of a prospectus. Copies of the final prospectus relating to the offering may be obtained by contacting: BofA Securities, NC1-022-02-25, 201 North Tryon Street, Charlotte, North Carolina 28255-0001, Attention: Prospectus Department, or by email at dg.prospectus_requests@bofa.com or UBS Securities LLC, Attention: Prospectus Department, 1285 Avenue of the Americas, New York, New York 10019, by telephone at (888) 827-7275 or by emailing ol-prospectus-request@ubs.com.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.

About Ambiq

Ambiq’s mission is to enable intelligence (artificial intelligence (AI) and beyond) everywhere by delivering the lowest power semiconductor solutions. Ambiq enables its customers to deliver AI compute at the edge where power consumption challenges are the most severe. Ambiq’s technology innovations, built on the patented and proprietary subthreshold power optimized technology (SPOT®), fundamentally deliver a multi-fold improvement in power consumption over traditional semiconductor designs. Ambiq has powered over 270 million devices to date.

Contact

IR
Shelton Group
sheltonir@sheltongroup.com
+1 972-239-5119

PR
Charlene Wan 
VP of Corporate Marketing
cwan@ambiq.com

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/16427c9e-307a-4d98-a6be-02324412ac0d

FAQ

How much did Ambiq raise in its IPO?

Ambiq raised $110.4 million in gross proceeds through its IPO, before deducting underwriting discounts and other offering expenses.

What was the IPO price for Ambiq (AMBQ) shares?

Ambiq shares were priced at $24.00 per share in the initial public offering.

How many shares did Ambiq (AMBQ) sell in its IPO?

Ambiq sold 4.6 million shares, including 600,000 additional shares from the full exercise of the underwriters' option.

When did Ambiq (AMBQ) start trading on the NYSE?

Ambiq shares began trading on the New York Stock Exchange on July 30, 2025, under the ticker symbol 'AMBQ'.

Who were the lead underwriters for Ambiq's IPO?

BofA Securities and UBS Investment Bank acted as joint lead book-running managers, with Needham & Company and Stifel as joint book-running managers.