Mainstay Medical Funding, Investors & Competitors

Mainstay Medical has raised $270M across 3 funding rounds, most recently a $125M undisclosed-stage round in February 2024.

Last Mainstay Medical funding round

$125M

Undisclosed stage · Feb 2024

Cumulative funding Mainstay Medical raised

$270M

across 3 funding rounds

Key investors in Mainstay Medical

  • Sofinnova Partners
  • Ally Bridge Group
  • Fountain Healthcare Partners
  • Perceptive Advisors
  • Viking Global Investors
  • Gilde Healthcare
  • Ireland Strategic Investment Fund
  • KCK

Mainstay Medical Overview

About Mainstay Medical

Mainstay Medical is a Dublin-headquartered medical device company developing the ReActiv8 implantable neurostimulation system for chronic low back pain. The FDA-approved device delivers electrical stimulation to the muscles of the lower back during specific restorative exercises, targeting patients unresponsive to conventional therapies. Mainstay conducts clinical trials across Europe and the United States, with commercial operations in Australia, Germany, and the UK. Listed on Euronext and NASDAQ, the company partners with pain management clinics and spine specialists to address the needs of over 10 million sufferers worldwide. Established in 2008, Mainstay employs around 100 staff globally.


Founded

2008

HQ

IrelandDublin

Status

Privately held

Customer focus

B2B

Revenue model

Product sales, Subscription

Mainstay Medical Funding History

Mainstay Medical has raised a total of $270M across 3 funding rounds.

Mainstay Medical's first fundraising round was a $37M undisclosed-stage round in February 2018. The most recent completed round was a $125M undisclosed-stage round in February 2024.

Mainstay Medical funding rounds

Mainstay Medical funding rounds
DateStageInvestorsRaisedDeal Summary
Feb 2024Undisclosed stageGilde Healthcare (lead); Viking Global Investors (lead); Sofinnova Partners; Fountain Healthcare Partners; Ally Bridge Group; Perceptive Advisors$125MMainstay Medical, an Irish medical device company, develops ReActiv8, a restorative neurostimulation implant for treating mechanical chronic low back pain associated with multifidus muscle dysfunction. The device has received CE mark in Europe (2016), approval in Australia (2019), FDA approval in the US (2020), and an expanded FDA label for 1.5T full-body MRI compatibility earlier in 2024. ReActiv8 began US commercialization in 2021 and aims to demonstrate superiority over therapies designed for other indications through clinical and health economic data. On February 26, 2024, Mainstay Medical closed a $125 million equity financing round co-led by new investors Gilde Healthcare and Viking Global Investors, with participation from existing investors Ally Bridge Group, Sofinnova Partners (Crossover Fund), Fountain Healthcare Partners, and Perceptive Advisors. The funds will support commercial expansion of ReActiv8 in the US, Europe, and Australia, build on insurance coverage including the first national US policy with Anthem BCBS, generate additional post-market clinical studies and research, and cover general operations and IP development. Gilde Healthcare's Geoff Pardo joined the board. The financing followed two extraordinary general meetings on February 23, 2024, where all resolutions passed. CEO Jason Hannon highlighted the round's scale to accelerate growth and capitalize the company for objectives like rapid commercial progress and data generation to support ReActiv8's unique mechanism.
Feb 2021Undisclosed stageAlly Bridge Group (lead); Sofinnova Partners (lead); KCK; Fountain Healthcare Partners$108MMainstay Medical is a medical device company headquartered in Dublin, Ireland, focused on commercializing ReActiv8, an implantable restorative neurostimulation system for treating mechanical chronic low back pain (CLBP). The company has subsidiaries in the US, Australia, Germany, Netherlands, and elsewhere to support commercialization. On February 16, 2021, Mainstay closed a US$108 million equity financing co-led by new investors Ally Bridge Group and Sofinnova Partners (Crossover Fund), with participation from a large global medical device company and existing investors including Sofinnova Partners (Capital Fund), KCK Group, and Fountain Healthcare Partners. The proceeds were intended to fund the US commercial launch of ReActiv8, expansion in Europe and Australia, post-market clinical studies, research, and general operations. This financing underscored investor confidence in ReActiv8's commercial potential as a unique restorative therapy for CLBP patients with limited options. Charles Chon from Ally Bridge Group and Cédric Moreau from Sofinnova Partners joined the board post-investment. Jason Hannon, CEO, highlighted the syndicate's quality and the company's strengthened position for 2021 objectives, including US market entry and accelerated commercialization. The round involved issuing new preferred shares, with Ally Bridge later holding about 27.6% of issued share capital by end-2021. For the fiscal year ending December 31, 2021, Mainstay reported revenue of $5.3 million, up from $1.5 million in 2020, reflecting commercial growth. Revenue doubled to $10.1 million in 2022. The company remained in a loss-making phase, with a $35.7 million loss in 2021 increasing to $49.1 million in 2022 amid R&D and expansion investments. Cash position supported operations post-financing, with total assets at $87.9 million at end-2021, declining to $56.0 million by end-2022.
Feb 2018Undisclosed stageIreland Strategic Investment Fund$37MMainstay Medical announced a EUR 30 million equity financing in February 2018 in which the Ireland Strategic Investment Fund invested approximately EUR 10 million, subscribing for 714,285 new shares, or about 33.2 per cent of the new shares issued. The remainder of the round came from Mainstay's existing long-term shareholders Sofinnova Partners, Fountain Healthcare Partners and KCK, together with a number of individual investors. Mainstay said the proceeds would fund completion of the ReActiv8-B clinical study, the filing of a pre-market approval application with the US Food and Drug Administration, and the build-out of a commercial presence ahead of a wider launch. Mainstay Medical was founded in 2008 and is headquartered in Dublin, with operations in Ireland, the United States and Australia, and its shares were listed on Euronext Paris and Euronext Dublin at the time of the transaction. Its lead product, ReActiv8, is an implantable neurostimulator designed to restore control of the muscles that stabilise the lumbar spine in patients with chronic mechanical low back pain.

Who has invested in Mainstay Medical?

8 investors have backed Mainstay Medical across its funding rounds, including Sofinnova Partners, Ally Bridge Group, Fountain Healthcare Partners, Perceptive Advisors, Viking Global Investors and Gilde Healthcare.

Lead investors include Gilde Healthcare, Viking Global Investors, Ally Bridge Group and Sofinnova Partners.


Mainstay Medical Investors

Investors in Mainstay Medical by funding rounds participated
InvestorHQRoundsRoleFirst check
Sofinnova PartnersFranceParis2LeadFeb 2021
Fountain Healthcare PartnersUnited StatesNew York City, NY2ParticipantFeb 2021
Ally Bridge GroupHong KongHong Kong2LeadFeb 2021
KCKUnited StatesNew York City, NY1ParticipantFeb 2021
Gilde HealthcareNetherlandsNetherlands1LeadFeb 2024
Ireland Strategic Investment FundIrelandDublin1ParticipantFeb 2018

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Mainstay Medical Competitors

Mainstay Medical competitors include listed companies like IDEXX Laboratories, GE HealthCare, United Imaging and Glaukos, and private ones like Dental Monitoring and AcuityMD.

Public and private companies comparable to Mainstay Medical
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
IDEXX LaboratoriesUnited StatesUnited StatesPublicly listed$4.3B$1.5B$40B8.9x
GE HealthCareUnited StatesUnited StatesPublicly listed$21B$3.7B$29B1.8x
United ImagingChinaChinaPublicly listed$2.1B$367M$12B4.8x
GlaukosUnited StatesUnited StatesPublicly listed$507M($157M)$9.5B14.6x
Dental MonitoringFranceParisPrivate$91M-$1B-
AcuityMDUnited StatesBoston, MAPrivate--$955M-

Mainstay Medical Public Comps

Mainstay Medical is still privately-owned, but its public comps include Samsung, Johnson & Johnson, Roche, Thermo Fisher Scientific, Siemens, Abbott, Danaher, Intuitive Surgical, Medtronic and Stryker.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Samsung$243B$67B4.4x2.4x15.8x4.4x
Johnson & Johnson$94B$40B7.2x6.8x17.0x18.3x
Roche$77B$26B5.0x4.9x14.6x12.4x
Thermo Fisher Scientific$45B$11B6.3x6.0x26.8x23.6x
Siemens$91B$15B3.0x2.9x18.1x15.7x
Abbott$44B$12B4.6x4.2x17.4x15.8x
Danaher$25B$6.9B7.0x6.6x24.8x21.1x
Intuitive Surgical$10B$3.6B13.0x11.6x36.6x25.7x

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Common questions about Mainstay Medical

When was Mainstay Medical founded?Mainstay Medical was founded in 2008.
Where is Mainstay Medical headquartered?Mainstay Medical is headquartered in Dublin, Ireland.
Is Mainstay Medical publicly listed?No, Mainstay Medical is a private, VC-backed company.
How much funding has Mainstay Medical raised?Mainstay Medical has raised $270M across 3 funding rounds.
What was Mainstay Medical's last funding round?Mainstay Medical's last funding round was a $125M undisclosed-stage round in February 2024, led by Gilde Healthcare and Viking Global Investors.
Who are Mainstay Medical's investors?Mainstay Medical's investors include Sofinnova Partners, Fountain Healthcare Partners, Ally Bridge Group, KCK, Gilde Healthcare, Ireland Strategic Investment Fund, Viking Global Investors and Perceptive Advisors.
Which companies are comparable to Mainstay Medical?Companies comparable to Mainstay Medical include IDEXX Laboratories, GE HealthCare, United Imaging, Glaukos, Dental Monitoring and AcuityMD.

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