Third Sphere (formerly Spero Ventures)
Third Sphere (formerly Spero Ventures) is a seed+, Pre-Seed venture capital firm based in San Francisco, CA investing in Other, Deep Tech. The firm typically writes $2.0M–$10.0M checks and has 95 portfolio companies in our records.
seed+, Pre-Seed
$2.0M – $10.0M
95+ companies
8 partners
Investment Thesis
Invests in companies creating a sustainable, equitable future through advancements in ClimateTech, IoT, and societal infrastructure.
How Third Sphere (formerly Spero Ventures) invests
Third Sphere (formerly Spero Ventures) is a vc firm based in San Francisco, CA. The firm invests at the seed+, Pre-Seed stages, with a focus on Other, Deep Tech. It does not invest in Consumer.
Third Sphere (formerly Spero Ventures) typically writes checks of $2.0M–$10.0M per investment.
Third Sphere (formerly Spero Ventures) has backed 95 companies in our records, including BlocPower, Aurora Solar, Rachio.
Meet the Team
Industry Focus
Invests In
Does Not Invest In
Portfolio Companies (95)
Other
BlocPower
Aurora Solar
Rachio
Third Sphere Credit SPV I LP (CIK 0001916722)
SEC Form D filing mentioning Urban Us
3AM Innovation
Adiona
Applied Carbon
Architizer
Avvir
Blokable
- •Raising at seed+, Pre-Seed? You're squarely in their sweet spot.
- •Lead with your fit in Other, Deep Tech — the sectors they actively back.
- •Size your ask to their typical $2.0M – $10.0M check.
- •warm intro preferred
- •Address your outreach to a specific partner, such as Yana Klimova, Chief Financial Officer.
- •A warm introduction beats a cold email. Get matched and request an intro.
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Fundraising resources
Frequently Asked Questions
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