Ambiq Micro, Inc.
| Public | |
| Traded as | NYSE: AMBQ |
| ISIN | 🆔 |
| Industry | Semiconductors |
| Founded 📆 | 2010 |
| Founder 👔 | Scott Hanson; David Blaauw; Dennis Sylvester |
| Headquarters 🏙️ | , Austin, Texas , United States |
Area served 🗺️ | |
Key people | Fumihide Esaka (CEO); Wen Hsieh (Chairman); Scott Hanson (CTO) |
| Products 📟 | Microcontrollers (MCUs), systems-on-chip (SoCs), real-time clocks (RTCs), AI enablement software |
| Revenue🤑 | US$76.1 million (2024)[1] |
| –US$39.7 million (2024)[1] | |
| Members | |
Number of employees | ~190 (2025)[2] |
| 🌐 Website | ambiq |
| 📇 Address | |
| 📞 telephone | |
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
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
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
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
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][20]
- Xiaomi Smart Band 8 — coverage notes the device is built around Ambiq’s Apollo4 Blue Lite MCU.[21]
Initial public offering
Ambiq filed its S-1 with the U.S. Securities and Exchange Commission in July 2025 and listed shares on the NYSE as AMBQ later that month.[22][23] On the first day of trading, its shares nearly doubled from the $24 IPO price amid heavy trading volatility.[24] According to the company’s filing, 2024 net sales were US$76.1 million, with significant exposure to consumer electronics customers.[1]
Corporate governance
Ambiq’s board is chaired by venture capitalist Wen Hsieh; other directors include CEO Fumihide Esaka and founder Scott Hanson, among others.[25][26]
See also
References
- ↑ 1.0 1.1 1.2 1.3 "S-1 Registration Statement — Ambiq Micro, Inc". SEC EDGAR. July 3, 2025. Retrieved August 29, 2025.
- ↑ 2.0 2.1 2.2 2.3 "University of Michigan startup Ambiq goes public". Michigan Engineering News. July 30, 2025. Retrieved August 29, 2025.
- ↑ 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.
- ↑ "Austin-based chipmaker Ambiq Micro seeks to raise $85M in IPO". Austin American-Statesman. July 24, 2025. Retrieved August 29, 2025.
- ↑ "Arm-Backed Chipmaker Ambiq Micro Nearly Doubles in First Day of Trading". Investopedia. July 30, 2025. Retrieved August 29, 2025.
- ↑ "Fumihide Esaka becomes CEO of Ambiq Micro". Power Electronics News. June 6, 2016. Retrieved August 29, 2025.
- ↑ "Form S-1/A — Ambiq Micro, Inc". SEC EDGAR. July 21, 2025. Retrieved August 29, 2025.
- ↑ "SEC Filings — Ambiq Investor Relations". Ambiq. July 31, 2025. Retrieved August 29, 2025.
- ↑ "Sub-threshold voltage, low power ARM MCUs are here". Embedded.com. January 19, 2015. Retrieved August 29, 2025.
- ↑ "Sub-threshold design – a revolutionary approach to eliminating power". eeNews Europe. December 22, 2014. Retrieved August 29, 2025.
- ↑ "Ambiq will soon make its IPO debut..." MarketWatch. July 24, 2025. Retrieved August 29, 2025.
- ↑ "Ambiq Launches Ultra-Low-Power Apollo4 & Apollo4 Blue SoCs for Always-On Edge Voice Processing". Hackster News. May 2020. Retrieved August 29, 2025.
- ↑ "Ambiq launches new processors for remote monitoring products". Medical Device Network. July 11, 2023. Retrieved August 29, 2025.
- ↑ "Ambiq empowers remote healthcare monitoring sector with new ultra-low processors". IoT Now. July 12, 2023. Retrieved August 29, 2025.
- ↑ "NeuralSPOT — Ambiq's AI SDK and Toolkit". GitHub. Retrieved August 29, 2025.
- ↑ "Ambiq announces neuralSPOT SDK for embedded AI application developers". Embedded Computing Design. Retrieved August 29, 2025.
- ↑ "Fitbit Luxe Teardown". TechInsights. September 9, 2021. Retrieved August 29, 2025.
- ↑ "Disruptive Technology: TSMC 22ULL eMRAM". TechInsights. Retrieved August 29, 2025.
- ↑ "TechInsights Teardown: Fitbit Charge 5 smart band". Electronics360. July 29, 2022. Retrieved August 29, 2025.
- ↑ "Ambiq Micro - Apollo4 Blue". Ambiq. Retrieved August 29, 2025.
- ↑ "Hacking the Xiaomi Mi Band 8 with Custom Firmware". Hackaday. December 7, 2023. Retrieved August 29, 2025.
- ↑ "Form S-1 — Ambiq Micro, Inc". SEC EDGAR. July 3, 2025. Retrieved August 29, 2025.
- ↑ "Arm-Backed Chipmaker Ambiq Micro Nearly Doubles in First Day of Trading". Investopedia. July 30, 2025. Retrieved August 29, 2025.
- ↑ "Ambiq will soon make its IPO debut..." MarketWatch. July 24, 2025. Retrieved August 29, 2025.
- ↑ "Board of Directors — Ambiq Investor Relations". Ambiq. Retrieved August 29, 2025.
- ↑ "Wen H. Hsieh — Executive Profile". The Wall Street Journal. Retrieved August 29, 2025.
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