Ambiq Micro, Inc. is trading 5.1% down at $85.83 after announcing an underwritten public offering of 1,800,000 common shares, which is weighing on sentiment due to dilution concerns.

  • The company filed an S-1 for the offering on June 22, 2026, with a potential total size of up to 2,070,000 shares including an overallotment option.
  • Multiple market outlets have noted the stock trading lower in response to the follow-on share sale and the resulting impact on existing shareholder equity.