MassChallenge Early Stage

Run by MassChallenge.

MassChallenge Early Stage runs in Boston in hybrid format, with length varying by track - 12 weeks for healthcare and 10 weeks for climate. Its model is zero-equity, so participants keep 100% ownership of their business; equity-free cash awards go to top finishers, with no fixed per-company cheque published. Generalist across healthtech, climate, fintech, biotech and security.

Investment

Not disclosed

Equity taken

0% (Like 66% of North America · Like 79% globally)

Duration

12 weeks (Shorter than North America median 13 wks · Shorter than global median 20 wks)

Format

hybrid

Cadence

Not disclosed

Location

Boston, United States

Sectors

• Generalist
• Health Tech
• Climate
• FinTech
• Biotech
• Security

How to apply

Official website

This programme has notes explaining its undisclosed figures, available in the full dataset.

Sources

Every figure above is taken from these pages, published by the programme or its parent organisation.

• https://masschallenge.org/united-states-early-stage/ read 2026-09-05 — supports equity pct, duration weeks, format, application url, contact email

Other programmes by MassChallenge

• MassChallenge Israel · Jerusalem

Compare all 2 MassChallenge programmes.

Other accelerators in Boston

• BOOST
• BU Summer Accelerator
• Enlight Fellowship
• Founder Institute Boston
• Go Build

All 10 in Boston

Last verified 2026-09-05.