VVaxdyn
Vaxdyn is a Spanish clinical-stage biotech developing vaccines against antibiotic-resistant (AMR) bacterial infections, using a proprietary LPS-null whole-cell platform that targets conserved outer membrane proteins rather than serotype-specific capsules. Founded in 2011 as a spin-off from the Institute of Biomedicine of Seville (IBiS) and the University of Seville, it is headquartered in Dos Hermanas (Seville) and is best known as the first Spanish biotech funded by CARB-X (up to ~$1.01M plus ~$6.36M in milestones); it also won an EIC Accelerator award (~€2.49M, January 2025) to fund Phase 1B/Phase 2 work on lead candidate K VAX.
SectorsBiotech, Vaccines, Healthtech, Antimicrobial Resistance, Life Sciences
Start-up MapHealthtech & Bio › Drug discovery & therapeutics developers
Founders
J
Jerónimo Pachón Díaz
Co-founder
M
Michael J. McConnell
Founder
Global models 5
VVaxcyte
United States · vaxcyte.com ↗
A clinical-stage vaccine developer targeting bacterial diseases with a proprietary platform, following Vaxdyn's model of building a bacterial vaccine pipeline to license or take to market.
~$370M (pre-IPO)Comparable
AAffinivax
United States · www.affinivax.com ↗
A platform biotech (MAPS) developing next-generation vaccines against bacterial pathogens, acquired by GSK, the same platform-to-pharma-exit model Vaxdyn is pursuing.
~$250MComparable
IInventprise
United States · www.inventprise.com ↗
A clinical-stage developer of bacterial vaccines funded largely by grants and philanthropy (Gates Foundation), much like Vaxdyn's non-dilutive, CARB-X-style funding.
~$100MComparable
LLimmaTech Biologics
Switzerland · www.lmtbio.com ↗
Develops vaccines against antibiotic-resistant bacteria such as S. aureus using conserved antigens, the most direct match to Vaxdyn's AMR vaccine focus.
~$40MComparable
G
GlycoVaxyn
Switzerland
Was a venture-backed platform biotech making bacterial vaccines against resistant pathogens until GSK acquired it, a precedent for Vaxdyn's likely path to an exit.
~$40MComparable
In the same niche 67 others
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Notes: Most funded first
Investors 7
Open as list →
AArcano Partners
www.arcanopartners.com
EEIC Fund
eic.ec.europa.eu
FFundación Botín
www.fundacionbotin.org
BBiovance Capital
AArquimea Group
BBionova Capital
LLaboratorio Reig Jofré
Funding rounds 2
·2 not counted| Date | Round | Amount | Lead |
|---|---|---|---|
| 2026-09-07 | Series A | €11M |
Biovance Capital
+2 more
|
| 2021-03-08 | Seed (estimated) | €700K |
Lead not disclosed
+3 more
|