Jason Lemkin
About Jason Lemkin
Jason Lemkin runs SaaStr, a community for B2B and SaaS founders, and is the founder and managing director of SaaStr Fund. He studied at Harvard University and UC Berkeley, according to Crunchbase.
He co-founded two companies. NanoGram Devices, where he was president, was acquired by Greatbatch in 2004. EchoSign, where he was co-founder and CEO from 2005, was sold to Adobe in 2011. He then served as a vice president at Adobe, running web business services, until 2012. Earlier roles included vice president of strategic development at NeoPhotonics and senior director at BabyCenter.
SaaStr grew out of a 2012 blog post on SaaS revenues and his Quora answers. It now includes the SaaStr Annual conference and the SaaStr AI event.
Lemkin describes himself on LinkedIn as a VC, an advisor and a smaller investor. SaaStr Fund has run since September 2013. He lists leading the first or very early VC rounds in Algolia, Pipedrive, Talkdesk, Salesloft, RevenueCat, Gorgias, Owner, Logikcull, Mixmax and MaestroQA, among others.
He also lists smaller positions or advisory roles in Greenhouse, Sqreen, Automile, Front, Intercom and Showpad. NFX Signal records 30 investments for him. It dates his RevenueCat seed to October 2018 and his Owner seed to August 2021.
NFX Signal lists Lemkin as an investor in Tolmo's $22M seed round of June 2026. Tolmo is a San Francisco company that builds AI agents to find and fix security issues across code, CI and cloud production environments. Coverage describes the round as led by Accel with Y Combinator participating. Lemkin appears among the listed angels and operators, and Signal names Micah Smurthwaite, Mark Anderson and Renaud Deraison as co-investors.
On LinkedIn he also names OpusClip and Higgsfield.ai among his smaller investments. No investment dates for these are given in the sources I found.
SaaStr Fund focuses on seed-stage B2B and SaaS companies. His LinkedIn headline gives VC checks of $500k to $4m. The fund's LinkedIn description says it leads initial investments of $250k to $5m, generally in companies with at least 10 unaffiliated customers. It cites a fund of $150M or more, while Crunchbase lists $90M, so fund size differs by source.
On SaaStr he has written that he is willing to take a large share of a round and does not seek board seats. He also says he helps founders hire their first management team. He has invested in European companies such as Talkdesk, Algolia and Pipedrive.
- Tolmo: AI security agents for code, CI and cloud; $22M seed, June 2026, Lemkin listed as an investor
- Algolia: search API; he lists leading the seed
- Pipedrive: sales CRM; he lists co-leading the seed
- Talkdesk: cloud contact center; he lists being the first VC investor
- Salesloft: sales engagement; he lists co-leading the Series A
- RevenueCat: subscription infrastructure for apps; seed in October 2018 per NFX Signal
- Owner: software for restaurants; seed in August 2021 per NFX Signal
- Gorgias: customer support for e-commerce; he lists leading the seed
- OpusClip and Higgsfield.ai: AI video companies where he lists being a smaller investor
Investing activity
Jason Lemkin appears in 1 AI deal tracked by the Lounge deals desk, rounds totalling $22M. The rounds are mostly Seed, with a median round size of $22M. The most recent is Tolmo (Seed, $22M, Jun 2026).
Jason Lemkin most often invests alongside Accel, Y Combinator, Motier Ventures and Mark Anderson, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Jason Lemkin
Does Jason Lemkin invest in AI startups?
Yes. NFX Signal lists him on Tolmo's $22M seed round from June 2026, and his LinkedIn names OpusClip and Higgsfield.ai among his smaller investments. His fund's main focus is B2B and SaaS.
What check size does Jason Lemkin write?
His LinkedIn headline gives VC checks of $500k to $4m through SaaStr Fund. The fund description on the same profile says $250k to $5m for initial investments.
What stage does Jason Lemkin invest in?
He describes himself as a seed-stage lead investor at SaaStr Fund. He generally looks for companies with at least 10 unaffiliated customers.
What does Jason Lemkin look for in founders?
Public descriptions of his approach say he leans in on rounds he believes in and helps build early management teams. He does not seek board seats. His LinkedIn says he wants founders who are better than him.
How can founders contact Jason Lemkin?
He is on X as @jasonlk and on LinkedIn, and SaaStr Fund has its own site, SaaStrFund.com. This profile has no direct pitch email or intake process to cite.
Is Jason Lemkin an angel investor?
Yes. Jason Lemkin invests personally as an angel.
What AI companies has Jason Lemkin invested in?
Jason Lemkin's AI investments include Tolmo. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Jason Lemkin invest at?
In the rounds tracked on Lounge, Jason Lemkin has invested at Seed, with a median round of $22M.
Who does Jason Lemkin co-invest with?
Jason Lemkin's most frequent co-investors on Lounge are Accel (1 deal), Y Combinator (1 deal), Motier Ventures (1 deal), Mark Anderson (1 deal) and Michael Callahan (1 deal).
How can founders reach Jason Lemkin?
Founders on Lounge can see Jason Lemkin's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Jason Lemkin to their Investor Pipeline to track the conversation.