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- ARTHEx Biotech
ARTHEx Biotech Funding, Investors & Competitors
ARTHEx Biotech has raised $105M across 6 funding rounds, most recently a $41M Series B in September 2025.
Last ARTHEx Biotech funding round
$41M
Series B · Sep 2025
Cumulative funding ARTHEx Biotech raised
$105M
across 6 funding rounds
Key investors in ARTHEx Biotech
Invivo Capital Partners
European Innovation Council
AdBio partners
Centre for the Development of Industrial Technology (CDTI)
Hadean Ventures
Columbus Venture Partners
Sound Bioventures
Bpifrance
About ARTHEx Biotech
ARTHEx Biotech is a Valencia-based biotechnology company spun out from the University of Valencia in 2017, developing antisense oligonucleotide therapies for neuromuscular genetic diseases like myotonic dystrophy type 1 and ALS. Its lead program, ATX-01, targets toxic RNA expansions in Phase 1/2 trials across Spain and Italy. Supported by grants from the European Commission, the firm collaborates with clinical centers in Barcelona and Milan. ARTHEx Biotech's platform leverages microRNA expertise for orphan drug designations from EMA and FDA.
Founded
2019
HQ
Website
Status
Privately held
Customer focus
B2C
Revenue model
Product sales
ARTHEx Biotech Funding History
ARTHEx Biotech has raised a total of $105M across 6 funding rounds.
ARTHEx Biotech's first fundraising round was a $2M seed round in January 2020. The most recent completed round was a $41M Series B in September 2025.
ARTHEx Biotech funding rounds
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Sep 2025 | Series B | Bpifrance (lead); European Innovation Council; Sound Bioventures; Invivo Capital Partners; Columbus Venture Partners; CDTI Innovación's INNVIERTE program; AdBio partners; Hadean Ventures | $41M | ARTHEx Biotech, a clinical-stage biotechnology company based in Valencia, Spain, and a spin-off from the University of Valencia Science Park, develops targeted RNA medicines for rare genetic neuromuscular disorders, with its lead program ATX-01 targeting Type 1 Myotonic Dystrophy (DM1). The company closed an upsized Series B financing round on September 17, 2025, bringing the total raised to $87 million, including a $45 million extension led by Bpifrance (via Large Venture and InnoBio strategies). Existing investors including AdBio Partners, CDTI Innovación (Innvierte program), Columbus Venture Partners (leader of the initial 2023 Series B of $42 million), European Innovation Council (EIC), Hadean Ventures, Invivo Capital Partners, and Sound Bioventures all participated in the extension. The new capital will fund the international clinical development of ATX-01 toward a registration-enabling advanced phase trial, with first clinical data expected in 2026, and expand the pipeline into additional muscular, cardiac, and neurological rare diseases with high unmet needs. CEO Frédéric Legros highlighted the company's strong position for advancing to a pivotal DM1 trial, while Bpifrance's Laurent Higueret emphasized the potential of ATX-01 as a game-changer based on novel science and preclinical data, aiming to build a leading precision RNA drug franchise. This extension builds on the initial Series B announced in 2023, reflecting continued investor confidence in ARTHEx's RNA therapy platform as it approaches clinical proof-of-concept. |
| May 2023 | Series B | Columbus Venture Partners (lead); European Innovation Council; Sound Bioventures; Invivo Capital Partners; Centre for the Development of Industrial Technology (CDTI); AdBio partners; Hadean Ventures | $45M | ARTHEx Biotech is a clinical-stage biotechnology company based in Valencia, Spain, focused on developing targeted RNA medicines, particularly microRNA inhibitors, for rare genetic neuromuscular disorders such as myotonic dystrophy type 1 (DM1). Its lead program, ATX-01, is in Phase I-IIa clinical trials under the ArthemiR trial, targeting miR-23b to address DM1 pathology by restoring MBNL protein function and enabling multi-tissue delivery beyond just muscle symptoms. The company is also advancing a broader pipeline for muscular, CNS, and cardiac conditions with high unmet needs. The Series B financing round, with Columbus Venture Partners as the initial lead investor since 2023, has been extended multiple times. Sources mention an early investment by CDTI Innvierte, Invivo Ventures, and Columbus Life Sciences Fund III totaling €4.132 million, and a €42 million Series B closing noted by EIT Health. The round was upsized to $87 million by September 2025, with an extension led by new investor Bpifrance (via Large Venture and InnoBio), joined by all existing shareholders including AdBio Partners, CDTI Innovación (Innvierte program), Columbus Venture Partners, European Innovation Council (EIC), Hadean Ventures, Invivo Partners, and Sound Bioventures. Proceeds from the upsized $87 million Series B are allocated to further clinical development of ATX-01, expecting initial data in 2026, and expanding the pipeline of targeted RNA medicines. No financial metrics such as post-money valuation, revenue, ARR, EBITDA, or valuation multiples are disclosed in the sources for the round around March 2023 or any phase. The investments confirm strong investor confidence in ARTHEx's novel science and clinical progress toward proof-of-concept in DM1. |
| Oct 2022 | Series A | European Innovation Council (lead) | $11M | ARTHEx Biotech is a Spanish biotechnology company, a spin-off from the University of Valencia, focused on developing targeted RNA medicines for rare genetic neuromuscular disorders with emphasis on myotonic dystrophy type 1 (DM1). The company's proprietary platform uses selective oligonucleotides paired with tissue-specific delivery mechanisms to reach skeletal muscle, heart, and brain. In October 2022, ARTHEx was selected for the European Innovation Council (EIC) Accelerator award, a highly competitive program where only 75 companies were chosen from over 1,000 applications. The EIC award provided €2.5 million in non-dilutive grant funding for innovation development costs and up to €11.5 million in direct equity investment managed by the EIC Fund, totaling up to €14 million in support. The funds were designated to support the FIGHT-DM1 project and initiate clinical trials of the company's lead candidate, ATX-01, in DM1. This award marked a significant milestone as ARTHEx was in pre-clinical stage at the announcement, with the funding enabling advancement toward first-in-human trials. |
| Jul 2020 | Seed | AdBio partners (lead); Invivo Capital Partners (lead) | $5M | ARTHEx Biotech is a preclinical-stage biotechnology company developing next-generation antisense RNA therapies for Myotonic Dystrophy Type 1 (DM1). The company closed a €4.25 million funding round on July 23, 2020, from Invivo Ventures and Advent France Biotechnology (AdBio Partners), completing an initial seed round that brought total funds raised since inception to €6.95 million ($8M). This followed prior investments of €2.7 million ($3.1M) from Invivo and CDTI-Innvierte in 2019 and June 2020. The proceeds support optimization of its lead drug candidate and preclinical regulatory studies to prepare for first-in-human trials by 2022. ARTHEx licensed its patented therapy from the University of Valencia, where proof-of-concept was published in Nature Communications. Alain Huriez from AFB joined the board alongside Invivo managing partners. |
| Jun 2020 | Seed | Centre for the Development of Industrial Technology (CDTI) (lead) | $1M | - |
| Jan 2020 | Seed | Invivo Capital Partners (lead) | $2M | - |
Who has invested in ARTHEx Biotech?
9 investors have backed ARTHEx Biotech across its funding rounds, including Invivo Capital Partners, European Innovation Council, AdBio partners, Centre for the Development of Industrial Technology (CDTI), Hadean Ventures and Columbus Venture Partners.
Lead investors include Bpifrance, Columbus Venture Partners, European Innovation Council, AdBio partners, Invivo Capital Partners and 1 other investor.
ARTHEx Biotech Investors
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 4 | Lead | Jan 2020 | ||
| 3 | Lead | Oct 2022 | ||
| 3 | Lead | Jul 2020 | ||
| 2 | Participant | May 2023 | ||
| 2 | Lead | May 2023 | ||
| 2 | Lead | Jun 2020 | ||
| 2 | Participant | May 2023 | ||
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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
Sign up to see data on 350K+ funding rounds and disclosed revenue and EBITDA valuation multiples, from seed, through growth stage, to pre-IPO.
Start Free TrialARTHEx Biotech Competitors
ARTHEx Biotech competitors include listed companies like Roche and Johnson & Johnson, and private ones like Heyuan Biotechnology, ArsenalBio, Formation Bio and Immunai.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $77B | $26B | $351B | 4.9x | ||
| Private | - | - | $3B | - | ||
| Private | - | - | $1.9B | - | ||
| Private | - | - | $1B | - | ||
| Private | - | - | $1B | - | ||
| Publicly listed | $94B | $40B | $651B | 6.8x |
ARTHEx Biotech Public Comps
ARTHEx Biotech is still privately-owned, but its public comps include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Amgen, Novo Nordisk and Gilead Sciences.
| Last FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $65B | $28B | 16.5x | 13.1x | 38.7x | 27.0x | |||
| $94B | $40B | 7.2x | 6.8x | 17.0x | 18.3x | |||
| $61B | $17B | 8.7x | 8.1x | 30.6x | 17.6x | |||
| $65B | $28B | 6.3x | 6.2x | 14.7x | 21.0x | |||
| $77B | $26B | 5.0x | 4.9x | 14.6x | 12.4x | |||
| $57B | $22B | 5.5x | 5.5x | 14.2x | 13.3x | |||
| $59B | $19B | 4.8x | 4.5x | 14.6x | 12.7x | |||
| $37B | $17B | 6.8x | 6.5x | 14.8x | 14.4x | |||
This data is available for Pro users. Sign up to see all ARTHEx Biotech competitors and their valuation data. Start Free Trial | ||||||||
Common questions about ARTHEx Biotech
| When was ARTHEx Biotech founded? | ARTHEx Biotech was founded in 2019. |
| Where is ARTHEx Biotech headquartered? | ARTHEx Biotech is headquartered in Valencia, Spain. |
| Is ARTHEx Biotech publicly listed? | No, ARTHEx Biotech is a private, VC-backed company. |
| How much funding has ARTHEx Biotech raised? | ARTHEx Biotech has raised $105M across 6 funding rounds. |
| What was ARTHEx Biotech's last funding round? | ARTHEx Biotech's last funding round was a $41M Series B in September 2025, led by Bpifrance. |
| Who are ARTHEx Biotech's investors? | ARTHEx Biotech's investors include Invivo Capital Partners, European Innovation Council, AdBio partners, Sound Bioventures, Columbus Venture Partners, Centre for the Development of Industrial Technology (CDTI), Hadean Ventures, Bpifrance and CDTI Innovación's INNVIERTE program. |
| Which companies are comparable to ARTHEx Biotech? | Companies comparable to ARTHEx Biotech include Roche, Heyuan Biotechnology, ArsenalBio, Formation Bio, Immunai and Johnson & Johnson. |
See companies similar to ARTHEx Biotech
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