- Companies
- MiRus
Last MiRus valuation
$4.4B
Strategic investment · May 2026
Last MiRus funding round
$1.5B
Strategic investment · May 2026
Cumulative funding MiRus raised
$1.6B
across 2 funding rounds
Key investors in MiRus
Boston Scientific
Mammoth Research
About MiRus
MiRus is a medical device company developing bioabsorbable implants for spine and orthopedics. Its Freedom LYRA system, launched in 2023, uses magnesium alloy screws that dissolve over 12-18 months, implanted in 500 cervical fusion surgeries across US centers.
Founded
2015
HQ
Website
Status
Privately held
Customer focus
B2B
Revenue model
Product sales
Valuation
$4.4B (May 2026)
Sectors
MiRus Valuation
MiRus is currently valued at $4.4B, based on its strategic investment round in May 2026.
The $1.5B round was led by Boston Scientific.
MiRus valuation by funding round
| Date | Stage | Valuation |
|---|---|---|
| May 2026 | Strategic investment | $4.4B |
MiRus Funding History
MiRus has raised a total of $1.6B across 2 funding rounds.
MiRus' first fundraising round was a $65M undisclosed-stage round in July 2021. The most recent completed round was a $1.5B strategic investment round in May 2026.
MiRus funding rounds
| Date | Stage | Investors | Raised | Valuation | Deal Summary |
|---|---|---|---|---|---|
| May 2026 | Strategic investment | Boston Scientific (lead) | $1.5B | $4.4B | Boston Scientific invested USD 1,500 million in privately held MiRus for an approximately 34% equity stake, with the agreement structured to give Boston Scientific an exclusive option to acquire MiRus’ transcatheter aortic valve replacement business for an additional USD 3,000 million if specified clinical and regulatory milestones are achieved. The transaction also includes potential future sales-based payments tied to the SIEGEL TAVR valve and an option to acquire certain mitral and tricuspid valve assets for additional consideration. Based on the announced upfront investment and milestone-linked acquisition payments, the implied total deal value could reach USD 4,500 million, excluding any contingent sales-based consideration. The investment is positioned to expand Boston Scientific’s presence in structural heart and valve therapies, with the TAVR option providing a path to full ownership of MiRus’ aortic valve business and potentially broader access to mitral and tricuspid assets. The structure combines equity investment, an exclusive call option, and contingent milestone and commercial payments, aligning capital deployment with clinical and regulatory progress. Boston Scientific said the investment is expected to have an immaterial impact on adjusted earnings per share in 2026. MiRus is a privately held developer of implants and procedural solutions focused on structural heart technologies, including the SIEGEL balloon-expandable TAVR system. The SIEGEL valve was described as an experimental device not yet approved for commercial sale in any country. The company’s business center is around next-generation heart-valve development, with the transaction providing capital to advance clinical and regulatory work and potential scale-up across a broader valve portfolio. |
| Jul 2021 | Undisclosed stage | Mammoth Research (lead) | $65M | - | MiRus LLC is a commercial-stage life sciences company founded in 2016 and headquartered in Marietta, Georgia, specializing in proprietary biomaterials and medical implants for spine, orthopedic, and structural heart disease treatment. The company developed its proprietary rhenium-based alloy technology, branded as MoRe®, which provides superior strength, fatigue resistance, and biocompatibility compared to conventional materials, with FDA clearance obtained in 2019 for its first spine implant. In July 2021, MiRus completed a $65 million oversubscribed funding round led by Mammoth Scientific, a venture capital firm focused on life sciences and biotechnology investments, alongside multi-generational family offices that had supported the company since inception. The capital was designated for research and development of differentiated products and procedural solutions using the MoRe® superalloy, expansion into structural heart disease and complex extremity surgery, scaling the commercial spine portfolio, and launching GALILEO™ RPM, a spine surgery-focused outcomes and analytics platform. According to Mammoth's portfolio materials, the company had already revolutionized spine surgery and was expanding its national sales and distribution network with multiple contracts across group purchasing organizations, integrated delivery networks, and regional health networks by the time of this funding round. |
Who has invested in MiRus?
2 investors have backed MiRus across its funding rounds, including Boston Scientific and Mammoth Research.
Lead investors include Boston Scientific and Mammoth Research.
MiRus Investors
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
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Start Free TrialMiRus Competitors
MiRus competitors include listed companies like Imeik Technology Development, BillionToOne, Abbott India and Bausch + Lomb, and private ones like Pulse and Biomat USA.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Private | - | - | $4.3B | - | ||
| Private | - | - | $4.2B | - | ||
| Publicly listed | $366M | $232M | $4B | 9.5x | ||
| Publicly listed | $305M | $12M | $5.2B | 11.7x | ||
| Publicly listed | $722M | $199M | $5.7B | 7.4x | ||
| Publicly listed | $5.1B | $513M | $6B | 2.0x |
MiRus Public Comps
MiRus is still privately-owned, but its public comps include Integer Holdings, LivaNova, Andon Health, Diagens, Hamamatsu Photonics, MGI Tech, Mirion, Imeik Technology Development, Ottobock and Haemonetics.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $1.9B | $292M | 3.0x | 3.1x | 19.3x | 14.5x | |||
| $1.4B | ($131M) | 3.0x | 2.8x | (31.5x) | 11.9x | |||
| $204M | $74M | 20.0x | - | 55.4x | - | |||
| $25M | ($10M) | 185.7x | - | (455.2x) | - | |||
| $1.4B | $272M | 3.0x | 2.7x | 15.0x | 14.0x | |||
| $414M | $19M | 9.1x | 8.2x | 194.7x | 80.4x | |||
| $925M | $201M | 5.3x | 4.5x | 24.4x | 18.0x | |||
| $366M | $232M | 9.7x | 9.5x | 15.3x | 16.6x | |||
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Common questions about MiRus
| When was MiRus founded? | MiRus was founded in 2015. |
| Where is MiRus headquartered? | MiRus is headquartered in Atlanta, GA, United States. |
| Is MiRus publicly listed? | No, MiRus is a private, VC-backed company. |
| What is MiRus' valuation? | MiRus was last valued at $4.4B in its strategic investment round in May 2026. |
| How much funding has MiRus raised? | MiRus has raised $1.6B across 2 funding rounds. |
| What was MiRus' last funding round? | MiRus' last funding round was a $1.5B strategic investment round in May 2026, led by Boston Scientific. |
| Who are MiRus' investors? | MiRus' investors include Mammoth Research and Boston Scientific. |
| Which companies are comparable to MiRus? | Companies comparable to MiRus include Pulse, Biomat USA, Imeik Technology Development, BillionToOne, Abbott India and Bausch + Lomb. |
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