What does Mark Leslie invest in?
Mark Leslie invests most often at Seed and Series A (67% of the rounds on record).
United States · Investor
Last cheque observed Mar 2026; 19 cheques on record.
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1 cheques in the last 12 months
Mostly Seed and Series A: 67% of its rounds
Every round we can evidence, newest first19 appearances
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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 Mark Leslie. A count of rooms they were both in, not a relationship either has claimed.
The latest companies Mark Leslie put money into.
2 episodes naming Mark Leslie in the title, and 3 more that mention it.

Mark Leslie: Silicon Valley Go-to-Market Legend (Part 2)
MentionsMark Leslie

Mark Leslie: Silicon Valley Go-to-Market Legend (Part 1)
MentionsMark Leslie

Breakthrough Lessons: Leslie’s Compass

Breakthrough Lessons: The Sales Learning Curve

a16z Podcast: Stories and Lessons in Enterprise Sales
Mark Leslie invests most often at Seed and Series A (67% of the rounds on record).
19 investments on record, 1 of them in the last 12 months. The most recent was in Mar 2026.
Its most recent investments on record: AMI Labs (Undisclosed round, Mar 2026), AI21 Labs (Series B, Jul 2022) and Nines (Series A, Nov 2019).
The median round it joins is $58M.
Rarely, if at all: none of its 19 investments on record names it as the lead.
Most of the companies it backs are in the United States (88%), France (6%) and Israel (6%).
Yes: it is actively investing, with 1 investments in the last 12 months.
Most often Kleiner Perkins Caufield & Byers (4 rounds together), Lightspeed Venture Partners (4 rounds together) and General Catalyst (3 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