Side Door Ventures

Side Door Ventures is a global venture capital firm that backs audacious founders building the future “at the fringe,” investing broadly across software, life sciences, space, frontier tech, blockchain, gaming and financial services. They deploy multiple strategies — Seed (first checks up to $500K, with 50% reserved for follow-ons), a Michigan Fund (lead checks up to $1.5M for Michigan-headquartered startups), a Digital Asset Fund (first checks up to $300K), and an Opportunity Fund (up to $5M for scaling companies) — to support companies from first product to breakout growth.

Invests In

Pre-Seed

Seed

Pre-Seed

Seed

Avg Check sIZE

Up to $500k

Fund Size

Location

San Francisco, CA

Leads Rounds?

What they Invest In

Notable Investments

K2 Space

Varda

SpaceX

Press

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Q&A

What's common Advice that Founders receive that is flat out wrong?

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Larsen Jensen

GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

Larsen Jensen

GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

Larsen Jensen

GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

Larsen Jensen

GP, Harpoon Ventures

Side Door Ventures

Invests In

Pre-Seed

Seed

aVG. cHECK sIZE

Up to $500k

lEADS ROUNDS?

lOCATION

San Francisco, CA

Notable Investments

K2 Space

Varda

SpaceX