Key facts
- xMEMS’s last known valuation is $220.0M (Oct 2025).
- It has raised $97.7M; the latest was Later Stage VC ($21.0M) in Oct 2025.
- Notable investors include Foothill Ventures, Beijing Delian Yuntong Investment Management Company, SIG (China), Boardman Bay Capital Management, Two Sigma Investments — 14 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 14 names
- ·Watchlist + deal alerts for xMEMS
- ·The full record, as it builds
Funding rounds
No funding rounds for xMEMS are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About xMEMS
Developer of a microelectromechanical systems (MEMS) speaker platform designed to deliver active thermal management for smartphones, SSDs, and datacenter rack servers. The company offers sound from ultrasound technology, delivering a new combination of audio fidelity, size, energy consumption, and uniformity not possible with traditional voice coil or hybrid micro-electromechanical system approaches, enabling wearable devices like earbuds, smart glasses, and smartwatches to provide superior audio quality.
- Sector
- Business Products and Services (B2B)
- HQ
- Santa Clara, CA, United States
- Founded
- 2018
- Employees
- 60
- Website
- xmems.com/
- Ownership
- Privately Held (backing)
xMEMS doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in xMEMS shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on xMEMS in its N-PORT filings yet. We sweep new filings monthly.