Mainstay Medical

Biotech & Life Sciences · San Diego, United States · Founded 2008 · IPO 2014

Innovative implantable neurostimulation system

Valuation $47M

Revenue $36M

Total funding $10–50M

Company overview

Mainstay Medical company information

The essential company record, classifications and operating signals in one place.

Status: Operational
Founded: 2008
Headquarters: San Diego, United States
Employees: 210
Open positions: None listed
Dealroom signal: 58.4

Website ↗LinkedIn ↗X ↗

client focusb2bclient focusb2csub industryBioTechnologysub industryMedical Devicesbusiness modelManufacturingindustryHealthsectorBiotechnologysectorNeurologysectorBiotech and PharmasectorHard TechsectorDT and LSsectorscience-based

Valuation & funding

Mainstay Medical funding history

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
POST IPO EQUITY✓Other financing	Feb 2024	$125M	—	Viking Global Investors · Sofinnova Partners · Gilde Healthcare · Perceptive Advisors	↗
POST IPO DEBT✓Debt	Apr 2021	$50M	—	Oxford Finance	—
POST IPO EQUITY✓Other financing	Feb 2021	$98M	—	Sofinnova Partners · Fountain Healthcare Partners · KCK · Ally Bridge Group	—
POST IPO EQUITY✓Other financing	Feb 2018	$33M	—	Fountain Healthcare Partners · KCK · Sofinnova Partners	—
POST IPO EQUITY✓Other financing	Jun 2016	$33M	—	KCK · Capricorn Investment Group · Sofinnova Partners · Fountain Healthcare Partners	—
POST IPO DEBT✓Debt	Aug 2015			IPF Partners	—
IPO✓Exit	Apr 2014			Undisclosed	—
SERIES B✓Equity / VC	Sep 2012			Seventure Partners · Capricorn Partners · Fountain Healthcare Partners	—
SERIES A✓Equity / VC	Jul 2010			Sofinnova Partners	—

Showing 9 recorded eventsUnlock the complete deal history →

Financials

Revenue, earnings and profit over time

Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.

Year	Revenue	Growth	EBITDA	Margin	Profit	Margin	R&D
2026	$36M	0%	−$18M	-50.5%	−$22M	-60.5%	$2.8M
2025	$36M	+37.4%	−$18M	-50.5%	−$22M	-60.5%	$2.8M
2024	$26M	+160.3%	−$18M	-69.4%	−$22M	-83.1%	$2.8M
2023	$10M	0%	−$18M	-180.5%			$2.8M
2022	$10M	+90.2%	−$18M	-180.5%
2021	$5.3M	+255.8%	−$18M	-343.3%
2020	$1.5M	—	−$18M	-1221.6%

Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Mainstay Medical website traffic

Latest recorded traffic for Mainstay Medical is 19K monthly website visits, down 47.2% over the last three months. Mainstay Medical's team grew 20% over the past year.

Latest monthly visits19K 3-month web change-47.2% 1-year team growth+20%

Monthly website visits68 observations · Jan 2017–Jul 2026

Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Mainstay Medical compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Company	Headquarters	Status	Employees	Total funding	Valuation
KEKernelNeuroscience as a Service enables on-demand access to the world's most advanced brain recording technology	Culver City, United States	Operational	60	$112M	$212M
ETEyetronic TherapieMedical devices used to treat neurological diseases	Potsdam, Germany	Operational
ELElectroCoreHelping patients across the globe who suffer from pain and chronic conditions by harnessing the power of nVNS, innovation, and technology to develop safe and clinically backed treatments	Rockaway Township, United States	Operational
ACAccexibleDeveloping a speech analysis platform based on AI models to early detect diseases as dementia, Parkinson, and coronary disease	Bilbao, Spain	Operational
SCScribensDevelopment of non-invasive tools for early detection and follow-up of neurological dysfunctions	Montreal, Canada	Closed
UMUroDev MedicalDeveloping the Connected Catheter, the world's first fully-internal, smart catheter for bladder management	San Clemente, United States	Operational
BMBlueWind MedicalEvelops and markets an innovative wireless neuro-stimulation device for the treatment of peripheral neuropathic pain	Herzliya, Israel	Operational
RTRTsafeEnsures safety and efficiency of radiation oncology treatments of cancer patients, in a personalized (patient-specific) manner	Athens, Greece	Operational

Showing 8 of the closest matchesCompare every metric →

Talent graph

Mainstay Medical's talent

Book a demo to see the people

Team profiled 11 named & role-tagged

Founders /100 quality score

Key operators 2 quality /100

Potential founders likely future founders

Startup mafia alumni-founded startups

Talent movements in · out past 12 months

Source: Dealroom Talent Intelligence.

Investors

16 investors on Mainstay Medical's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Series A 4 investors entered at this stage

Sofinnova Partners

Fountain Healthcare Partners

Seventure Partners

Capricorn Partners

Series B+ 8 investors entered at this stage

IPF Partners

KCK

Capricorn Investment Group

Ally Bridge Group

Oxford Finance

Viking Global Investors

Gilde Healthcare

Perceptive Advisors

Other known 4 additional known investors

Armentum Partners

Ireland Strategic Investment Fund

KCK MedTech

Quest for Growth

Global footprint

Where Mainstay Medical has talent and traffic

Workforce by country

6 countries with
team presence

🇺🇸 United States83.7%

🇦🇺 Australia6%

🇩🇪 Germany4.9%

🇬🇧 United Kingdom3.3%

🇮🇪 Ireland1.6%

Top 5 of 6 shown

In the news

Latest news about Mainstay Medical

Recent press, funding announcements, and product moves mentioning Mainstay Medical — open to read from the original sources.

See all news

Market sentiment

What the market is saying about Mainstay Medical

An AI-synthesized read of the highest-engagement posts about Mainstay Medical on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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