What does Biz Stone invest in?
Biz Stone invests most often at Series A and Seed (100% of the rounds on record).
United States · Investor
Last cheque observed Jun 2026; 9 cheques on record.
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1 cheques in the last 12 months
Mostly Series A and Seed: 100% of its rounds
Sole investor in 1 rounds, median $3.0M
Every round we can evidence, newest first9 appearances
1 round
1 round
1 round
1 round
2 rounds
1 round
1 round
1 round
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
We hold 1 person at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
The investors most often in the same rounds as Biz Stone. A count of rooms they were both in, not a relationship either has claimed.
The latest companies Biz Stone put money into.
2 books written by people at Biz Stone: Biz Stone.

Things a Little Bird Told Me: Confessions of the Creative Mind
Biz Stone · 2014
3.93 from 3,915 ratings on Goodreads
Biz Stone, the co-founder of Twitter, discusses the power of creativity and how to harness it, through stories from his remarkable life and career. Things a Little Bird Told Me From GQ 's "Nerd of the Year" to one of Time 's most influential people in the world, Biz Stone…

Who Let the Blogs Out?: A Hyperconnected Peek at the World of Weblogs
Biz Stone · 2004
3.35 from 49 ratings on Goodreads
Blogs--or weblogs--are a huge phenomenon on the internet. From ultra-personal diary entries to specialized information on a wide variety of subjects (teen ranting to presidential campaigns), blogs are the new way to create a virtual community that can effect real-world change.…
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2 episodes naming Biz Stone in the title, and 3 more that mention it.

20VC: Twitter Co-Founder Biz Stone on The 3 Stages of Wealth, The Return To Twitter in 2017 and the Associated Missions and Challenges & Why Silicon Valley is not an "Insiders Only" Universe?
MentionsBiz StoneEv Williams

Biz Stone on “Unpivoting” and the Future of Search | Greymatter
MentionsBiz StoneJosh Elman

2026 Starts with a bang: META AI Drama and Nvidia's $20B Groq Acquisition | E2230

#29 - Altitud | Gaston Irigoyen from Pomelo and the $9M seed round

SaaStr 202: Intercom COO Karen Peacock on Lessons Learned Running A $2.2Bn Line of Business at Intuit, The Most Important Metric You Probably Aren't Tracking & Why, When and How To Hire Your COO
Biz Stone invests most often at Series A and Seed (100% of the rounds on record).
9 investments on record, 1 of them in the last 12 months. The most recent was in Jun 2026.
Its most recent investments on record: Board (Series A, Jun 2026), Sociability (Seed, Jun 2025) and AI Foundation (Undisclosed round, Sept 2018).
The median round it joins is $15M.
Rarely, if at all: none of its 9 investments on record names it as the lead.
Most of the companies it backs are in the United States (63%), India (25%) and Australia (13%).
Yes: it is actively investing, with 1 investments in the last 12 months.
Most often First Round Capital (2 rounds together).
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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it