What does Jonathan Siegel invest in?
Jonathan Siegel invests most often at Seed (100% of the rounds on record).
Last cheque observed Nov 2014. Silence since then is not evidence of inactivity: our sources miss unannounced rounds.
QuietAngel
7 rounds on record
Mostly Seed: 100% of its rounds
Every round we can evidence, newest first7 appearances
1 round
2 rounds
2 rounds
2 rounds
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 Jonathan Siegel. A count of rooms they were both in, not a relationship either has claimed.
One book written by people at Jonathan Siegel: Jonathan Siegel.

The San Francisco Fallacy: The Ten Fallacies That Make Founders Fail
Jonathan Siegel · 2017
4.27 from 246 ratings on Goodreads
THE SAN FRANCISCO FALLACY IS NOT ABOUT SAN FRANCISCO. Rather, it’s about the herd instincts that drive tech companies to set up shop there, and the mistakes these herd instincts lead to. Most importantly, it’s about how to avoid making these same mistakes yourself. In The San…
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Jonathan Siegel invests most often at Seed (100% of the rounds on record).
7 investments on record, 0 of them in the last 12 months. The most recent was in Nov 2014.
The median round it joins is $1.0M.
Rarely, if at all: none of its 7 investments on record names it as the lead.
Most of the companies it backs are in the United States (100%).
No investments in the last 12 months; the latest was in Nov 2014.
Most often 500 Global (3 rounds together).
Jonathan Siegel is an angel.
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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