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Draft:Ambiq Micro, Inc

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Ambiq Micro, Inc.
Company typePublic
NYSE: AMBQ
IndustrySemiconductors
Founded2010
FounderScott Hanson; David Blaauw; Dennis Sylvester
Headquarters
Austin, Texas
,
United States
Key people
Fumihide Esaka (CEO); Wen Hsieh (Chairman); Scott Hanson (CTO)
ProductsMicrocontrollers (MCUs), systems-on-chip (SoCs), real-time clocks (RTCs), AI enablement software
RevenueUS$76.1 million (2024)[1]
–US$39.7 million (2024)[1]
Number of employees
~190 (2025)[2]
Websiteambiq.com

Ambiq Micro, Inc. (NYSE: AMBQ) is an American fabless semiconductor company that designs ultra-low-power microcontrollers and systems-on-chip for battery-powered "edge AI" devices such as smartwatches, fitness bands, and other Internet of Things endpoints.[3][4] Founded in 2010 by University of Michigan researchers Scott Hanson, David Blaauw, and Dennis Sylvester, the company is headquartered in Austin, Texas.[2] Ambiq went public on the New York Stock Exchange in July 2025 under the ticker "AMBQ".[5]

History

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Ambiq originated from low-power circuit research at the University of Michigan, where Hanson’s doctoral work explored operating transistors at sub-threshold voltages to reduce energy use.[2] The company launched in January 2010, initially selling an ultra-low-power clock IC before expanding into microcontrollers and SoCs.[2] Fumihide ("Humi") Esaka became chief executive officer in 2016.[6]

Ambiq filed for an initial public offering in July 2025 and listed shares on the NYSE as AMBQ later that month.[7][8]

Technology

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Ambiq commercializes Subthreshold Power Optimized Technology (SPOT), a design approach that operates transistors near or below their threshold voltage to cut active and sleep-mode power consumption.[9][10] The company’s chips target always-on sensing and on-device machine learning ("edge AI") where battery life and thermal limits constrain compute.[11]

Products

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Ambiq’s product lines include:

  • Apollo microcontrollers and SoCs for wearables and IoT, including the Apollo4 family announced for always-on voice and graphics workloads;[12]
  • Apollo4 Blue Lite, a Bluetooth Low Energy SoC aimed at digital health and fitness devices;[13][14]
  • Ultra-low-power real-time clocks (RTCs).[1]

Ambiq also maintains neuralSPOT, an open-source SDK and model zoo to help deploy embedded AI on its SoCs.[15][16]

Deployments

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Independent teardowns and reports have identified Ambiq chips in several consumer wearables:

  • Fitbit Luxe — TechInsights documented an Ambiq Apollo4 Blue MCU with TSMC eMRAM in the device.[17][18]
  • Fitbit Charge 5 — a TechInsights teardown via Electronics360 lists a 32-bit Arm microprocessor from Ambiq Micro on the main board.[19]
  • Xiaomi Smart Band 8 — coverage notes the device is built around Ambiq’s Apollo4 Blue Lite MCU.[20]

Initial public offering

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Ambiq filed its S-1 with the U.S. Securities and Exchange Commission in July 2025 and listed on the NYSE under the ticker AMBQ.[21][22] On the first day of trading, its shares nearly doubled from the $24 IPO price amid heavy trading volatility.[23] According to the company’s filing, 2024 net sales were US$76.1 million, with significant exposure to consumer electronics customers.[1]

Corporate governance

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Ambiq’s board is chaired by venture capitalist Wen Hsieh; other directors include CEO Fumihide Esaka and founder Scott Hanson, among others.[24][25]

See also

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References

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  1. ^ a b c d "S-1 Registration Statement — Ambiq Micro, Inc". SEC EDGAR. July 3, 2025. Retrieved August 29, 2025.
  2. ^ a b c d "University of Michigan startup Ambiq goes public". Michigan Engineering News. July 30, 2025. Retrieved August 29, 2025.
  3. ^ Kruppa, Peter (July 24, 2025). "Ambiq will soon make its IPO debut. Here's what to know about the AI chip company". MarketWatch. Retrieved August 29, 2025.
  4. ^ "Austin-based chipmaker Ambiq Micro seeks to raise $85M in IPO". Austin American-Statesman. July 24, 2025. Retrieved August 29, 2025.
  5. ^ "Arm-Backed Chipmaker Ambiq Micro Nearly Doubles in First Day of Trading". Investopedia. July 30, 2025. Retrieved August 29, 2025.
  6. ^ "Fumihide Esaka becomes CEO of Ambiq Micro". Power Electronics News. June 6, 2016. Retrieved August 29, 2025.
  7. ^ "Form S-1/A — Ambiq Micro, Inc". SEC EDGAR. July 21, 2025. Retrieved August 29, 2025.
  8. ^ "SEC Filings — Ambiq Investor Relations". Ambiq. July 31, 2025. Retrieved August 29, 2025.
  9. ^ "Sub-threshold voltage, low power ARM MCUs are here". Embedded.com. January 19, 2015. Retrieved August 29, 2025.
  10. ^ "Sub-threshold design – a revolutionary approach to eliminating power". eeNews Europe. December 22, 2014. Retrieved August 29, 2025.
  11. ^ "Ambiq will soon make its IPO debut..." MarketWatch. July 24, 2025. Retrieved August 29, 2025.
  12. ^ "Ambiq Launches Ultra-Low-Power Apollo4 & Apollo4 Blue SoCs for Always-On Edge Voice Processing". Hackster News. May 2020. Retrieved August 29, 2025.
  13. ^ "Ambiq launches new processors for remote monitoring products". Medical Device Network. July 11, 2023. Retrieved August 29, 2025.
  14. ^ "Ambiq empowers remote healthcare monitoring sector with new ultra-low processors". IoT Now. July 12, 2023. Retrieved August 29, 2025.
  15. ^ "NeuralSPOT — Ambiq's AI SDK and Toolkit". GitHub. Retrieved August 29, 2025.
  16. ^ "Ambiq announces neuralSPOT SDK for embedded AI application developers". Embedded Computing Design. Retrieved August 29, 2025.
  17. ^ "Fitbit Luxe Teardown". TechInsights. September 9, 2021. Retrieved August 29, 2025.
  18. ^ "Disruptive Technology: TSMC 22ULL eMRAM". TechInsights. Retrieved August 29, 2025.
  19. ^ "TechInsights Teardown: Fitbit Charge 5 smart band". Electronics360. July 29, 2022. Retrieved August 29, 2025.
  20. ^ "Hacking the Xiaomi Mi Band 8 with Custom Firmware". Hackaday. December 7, 2023. Retrieved August 29, 2025.
  21. ^ "Form S-1 — Ambiq Micro, Inc". SEC EDGAR. July 3, 2025. Retrieved August 29, 2025.
  22. ^ "Ambiq will soon make its IPO debut..." MarketWatch. July 24, 2025. Retrieved August 29, 2025.
  23. ^ "Arm-Backed Chipmaker Ambiq Micro Nearly Doubles in First Day of Trading". Investopedia. July 30, 2025. Retrieved August 29, 2025.
  24. ^ "Board of Directors — Ambiq Investor Relations". Ambiq. Retrieved August 29, 2025.
  25. ^ "Wen H. Hsieh — Executive Profile". The Wall Street Journal. Retrieved August 29, 2025.
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