BioStack
BioStack builds clinical data pipelines and realistic training environments for healthcare and drug-discovery AI.
$9.5MSeed
ParticipantYC
Y Combinator (YC)
Activity from announced rounds
Activity in this selectionOct 27, 2026 · Oct 21, 2026
Y Combinator funds early-stage startups through a three-month accelerator in San Francisco, with four batches a year and a standard $500,000 investment for accepted companies.
The investment consists of $125,000 for 7% of the company and $375,000 on an uncapped SAFE with a most-favoured-nation provision. The second SAFE adds to YC’s ownership when it converts, so the full $500,000 is not exchanged for a fixed 7% stake.
During the batch, founders work with YC partners in individual and group office hours, build toward Demo Day and use the alumni community for feedback, hiring and introductions. Companies can apply before launch; YC also accepts businesses that already have users and revenue.
- Rounds participated in
- 3
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 2 First participation on record · 1 follow-on
- Funding in participating rounds
- $205.5M 3 disclosed · full round size, not this investor’s share
By stage
By primary sector
By country
Rounds
3 in this selectionTractian
Industrial asset monitoring company combining sensors and AI to diagnose equipment problems and guide maintenance.
$130MSeries D
ParticipantBlacksmith
Cloud infrastructure for building and testing software through continuous integration workflows.
$66MSeries C
Participant