Mobia Medical, Inc. (formerly MicroTransponder, Inc.; renamed February 2026) is a Nasdaq-listed (MOBI) medical device company based in Austin, Texas. Its FDA-approved Vivistim Paired Vagus Nerve Stimulation (VNS) System is the first and only implanted device clinically proven to help chronic ischemic stroke survivors regain two to three times more upper-limb function when paired with in-clinic rehabilitation therapy.
Vivistim is publicly traded
This company is no longer available on our private secondary market. Shares can be traded publicly under its listed ticker.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2007
Employees
125–140
Total Funding
$155.1M
6 rounds
Mobia Medical (formerly MicroTransponder, Vivistim maker) priced Nasdaq IPO at $15, raising $150M at ~$549M fully diluted value
Now public (MOBI); private-share secondary market superseded by public pricing
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Total raised $155.1M across 6 rounds
Last updated 10-06-2026
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| Mar 12, 2025 | Series F Press release | $65M | — | U.S. Venture Partners |
| Dec 29, 2023 | Venture debt — Horizon Technology Finance | $7.5M | — | Horizon Technology Finance |
| Sep 2022 | Series E (second close / upsize) Press release | $20M | — | U.S. Venture Partners |
Richard Foust
Chief Executive Officer
Navzer Engineer
Co-Founder & Chief Scientific Officer
Doug Ellison
Chief Revenue Officer
Dana G. Mead, Jr.
Chair of the Board
MicroTransponder renamed itself Mobia Medical, Inc. in February 2026 and listed on the Nasdaq Global Select Market as MOBI on May 8, 2026, after pricing 10 million shares at $15 (about $150M gross; roughly $549M fully diluted market value). The offering closed May 11, 2026.
Vivistim shares can be purchased through any standard brokerage account — including Fidelity, Charles Schwab, TD Ameritrade, and online platforms like Robinhood or E*TRADE. Search for the ticker to place an order.
Vivistim raised $155.1M across 6 disclosed funding rounds prior to its public listing.
Vivistim was founded by Navzer Engineer in 2007.
Vivistim is headquartered in Austin, Texas, United States.
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