aid: axcelius-i-ii
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/axcelius-i-ii.png
name: Axcelius I/II
description: >-
  Axcelius I/II is a biopharmaceutical company-creation vehicle backed by Canaan Partners, formed to
  found and incubate drug-development companies pursuing treatments for cancer, rare diseases, and
  neurodegenerative disorders. It is led by managing partner Dennis Podlesak and sponsored at Canaan
  by general partner Brent Ahrens, and operates from San Francisco, California, with an associated
  holding entity registered in Connecticut at Canaan's Westport office. Rather than operating as a
  product company, Axcelius assembles management teams and capital around licensed therapeutic assets
  and spins them out as standalone biopharma companies; Transposon Therapeutics, developing therapies
  for ALS and Alzheimer's disease, is its best-documented creation. As of this enrichment pass the
  vehicle remains in stealth mode with no public developer surface -- no product website beyond a
  holding page, no documentation, developer portal, SDKs, GitHub organization, or API of any kind.
url: https://raw.githubusercontent.com/api-evangelist/axcelius-i-ii/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
x-tier: stub
x-tier-reason: stealth-company-creation-vehicle-no-public-api-surface
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Venture Capital
- Company Creation
- Biopharmaceutical
- Life Sciences
- Drug Discovery
- Oncology
- Rare Disease
- Neurodegenerative Disease
- Stealth
apis: []
common:
- type: DomainSecurity
  url: security/axcelius-i-ii-domain-security.yml
- type: Website
  url: https://axcelius.com/
  x-verification: >-
    Unconfirmed attribution. axcelius.com serves only a 386-byte "AXCELIUS" holding page (HTTP 200,
    GoDaddy hosting). Registered 2019-07-31, three weeks before Axcelius Holding Company, LLC was
    registered in Connecticut (2019-08-20) at Canaan Partners' Westport office; WHOIS registrant is
    privacy protected. Timing and naming corroborate but do not prove the association.
- type: InvestorProfile
  url: https://www.canaan.com/companies/axcelius-i-ii
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 2
  pass: local-v1
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io