California

Side Door Ventures

Side Door Ventures, based in California, backs generalist startups at Pre-Seed and Seed stages, typically following others with checks from $250k to $500k, as seen in K2 Space and Mysten Labs.

Entry stagePre-seed, Seed
Check size$250K to $500K
Leads roundsMostly follows
FocusGeneralist
Latest fundn/a
Investing team1 peopleNo activity since Sep

Who you would pitch at Side Door Ventures

1 person on the investing team. Partners are listed first.

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Writes $250K to $500K checks. Its smallest check is larger than 33% of firms in the atlas.

Bars: how many firms in the atlas report each band. Highlighted: this firm.

No recent activity since September 2026. Quiet does not mean closed.

Weekly count of activity updates. Activity is not a confirmed deal.

Before you pitch

Ownership target< 5%

Notable investments

K2 SpaceMysten LabsEther.fiVarda Space Industries

In their words

Side Door Ventures - Founders Investing In FoundersSide Door Ventures is a global venture capital firm backing audacious founders building tomorrow’s life-changing companies. We’re sector-agnostic and invest in companies www.sdv.vc
Founders and investors at a Mode VC gathering

Send Mode VC your deck

Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Alert me when Side Door Ventures is active

One email when this firm shows new activity. Nothing else.

Firms like Side Door Ventures

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Questions

What stage does Side Door Ventures invest in?

Side Door Ventures reports entry at pre-seed, seed.

How much does Side Door Ventures invest?

Side Door Ventures reports checks of $250K to $500K.

Does Side Door Ventures lead rounds?

Side Door Ventures mostly follows other investors.

Who are the partners at Side Door Ventures?

Andrew Batey.

Is Side Door Ventures active right now?

No recent activity since September 2026.

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