Tumml
Tumml is an incubator based in San Francisco, United States, focused on Pre-Seed and Seed startups. This profile covers its focus and how founders can get in front of it in 2026.
Tumml's mission is to empower entrepreneurs to solve urban problems. We provide entrepreneurs with tools to help scale their impact.
- Investment stages
- Pre-SeedSeed
- Location
- San Francisco, United States
- Founded
- 2012
- Team size
- 1-10
- Portfolio companies
- 36+
- Latest deal on record
- October 2016
About Tumml
Tumml is a startup hub for urban technology. We provide resources to early-stage entrepreneurs tackling major urban challenges. Ongoing support for a portfolio of urban innovation startups thought leadership on issues important to urban-focused entrepreneurs. There are events and workshops where startups can engage with funders and policy makers.
Source: the organization's public company profile.
How to pitch Tumml
The founders who hear back from Tumml lead with traction and a clear ask that matches its stage, not a generic mass email. Build a targeted, verified list, write a personalized note, and track who opens it, all in one place.
Connect with Tumml
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "Tumml." Round Funded investor database, updated October 19, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/vc/tumml
Frequently Asked Questions
What is Tumml?
Tumml is an incubator based in San Francisco, United States. Round Funded tracks its focus, stage, and activity alongside thousands of active investors.
What stage does Tumml invest at?
Tumml focuses on Pre-Seed and Seed rounds. Lead with traction that fits the stage when you reach out.
Where is Tumml based?
Tumml is based in San Francisco, United States. You can reach out from anywhere with a pitch that matches its focus.
How do I contact Tumml?
Unlock a verified email for Tumml and reach out with a personalized pitch on Round Funded. We show only deliverable contacts, so your outreach does not bounce.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.