# Sam Lessin, Partner

> Sam Lessin, Partner. 13 investments on record. The rounds they were named in and the filings that name them, each with its source.

Source: https://millionrounds.com/person/sam-lessin (Millionrounds; every figure on the page links to its filing or article)

Menlo Park, US · Partner

# Sam Lessin

Partner

Latest rounds

- **Riverside** Series C · $30M Dec 2024
- **MasterClass** Series C · $35M Mar 2017
- **PicnicHealth** Seed · $2M Apr 2015

Backs *Web3 & Crypto* *Big Data & Analytics* *Software* *Marketplaces*

Profile summary

- **Rounds named:** 13 last Dec 2024
- **Filings:** 3 with regulators
- **Podcasts:** 6 +5 mentions

What this record rests on

- ✓ **Named in rounds** 13 rounds name them
- ✓ **On filings** 3 filings with a regulator
- ✓ **Own investor record** Their cheques, held under their name
- **Claimed** Not claimed yet

Titles come from filings their firm signed.

[Correct or remove](https://millionrounds.com/corrections?person=sam-lessin)[Is this you? Claim it](https://millionrounds.com/claim?person=sam-lessin)

## Their investor record

[**Sam Lessin, investing** Every cheque we watched them write, on one record **0** cheques in 12 months **13** all time **0** led quiet](https://millionrounds.com/fund/sam-lessin)

## Rounds they were named in

- **Rounds:** 13
- **Led:** 0
- **Disclosed:** $96.7M
- **Active:** 2010–24

2024

- **Riverside** *Series C* **$30M** *IL* Dec 2024 Joined · +3 investors

2017

- [MasterClass](https://millionrounds.com/company/masterclass) *Series C* **$35M** *US* Mar 2017 Joined · +8 investors

2015

- [PicnicHealth](https://millionrounds.com/company/picnichealth) *Seed* **$2M** *US* Apr 2015 Joined · +15 investors · historical
- [Even](https://millionrounds.com/company/even) *Seed* **$1.5M** Jan 2015 Joined · +12 investors · historical

2014

- [Flynn](https://millionrounds.com/company/flynn) *Seed* **$1.3M** Sept 2014 Joined · +6 investors · historical
- [Mavrx](https://millionrounds.com/company/mavrx) *Seed* *US* Aug 2014 Joined · +7 investors · historical

2013

- [Sendbloom](https://millionrounds.com/company/sendbloom) *Seed* **$1.3M** *US* Jul 2013 Joined · +19 investors · historical

2011

- [MakerBot](https://millionrounds.com/company/makerbot) *Growth* **$10M** *US* Aug 2011 Joined · +5 investors · historical
- [Birchbox](https://millionrounds.com/company/birchbox) *Series A* **$10.5M** *US* Aug 2011 Joined · +7 investors · historical

2010

- [Path](https://millionrounds.com/company/path) *Seed* **$2.5M** *US* Nov 2010 Joined · +27 investors · historical
- [Birchbox](https://millionrounds.com/company/birchbox) *Seed* **$1.4M** *US* Oct 2010 Joined · +12 investors · historical
- [Venmo](https://millionrounds.com/company/venmo) *Seed* **$1.2M** *US* May 2010 Joined · +7 investors · historical

By stage

- Seed **9**
- Series C **2**
- Growth **1**
- Series A **1**

What they backed

Web3 & Crypto **2** Big Data & Analytics **2** Software **2** Marketplaces **1** Video **1** Edtech **1**

Alongside

- [Slow Ventures *5*](https://millionrounds.com/fund/slow-ventures)
- [Lerer Ventures *4*](https://millionrounds.com/fund/lerer-ventures)
- [First Round Capital *3*](https://millionrounds.com/fund/first-round-capital)
- [Kevin Colleran *3*](https://millionrounds.com/fund/kevin-colleran)
- [RRE Ventures *3*](https://millionrounds.com/fund/rre-ventures)
- [Accel Partners *2*](https://millionrounds.com/fund/accel)
- [Dave Morin *2*](https://millionrounds.com/fund/dave-morin)
- [Dustin Moskovitz *2*](https://millionrounds.com/fund/dustin-moskovitz)

The latest 12 of 13. Rounds where a report named this person rather than a firm, matched on name: read it as a strong hint, not proof, since people share names.

## Where they are named on record

Filings

- SEC Form D · Venture Capital fund **[Slow Ventures](https://millionrounds.com/fund/slow-ventures)** Managing Director of the General Partner of the Issuer on 2 filings · since 2024
- SEC Form D · Venture Capital fund **[SAM LESSIN](https://millionrounds.com/fund/sam-lessin)** Managing Director of the General Partner of the Issuer on 2 filings · since 2024
- SEC Form D · Venture Capital fund **[Slow Ventures](https://millionrounds.com/fund/slow-ventures)** Managing Director of the General Partner on 5 filings · since 2016

Each row is a document a firm filed with a regulator: somebody signed it, and it carries a date.

## Hear them before you pitch them

- [TBPN](https://millionrounds.com/podcasts/tbpn) · 23 May 2025 · 3h 56m "The Information" Profiles TBPN, AI Ups and Downs, Nuclear Regulation | Zach Weinberg, Leigh Marie Braswell, Stephen Balaban, Sam Lessin, Bobby Goodlatte, Auren Hoffman, Doug Bernauer, Isaiah Taylor With [Sam Lessin](https://millionrounds.com/person/sam-lessin)[Stephen Balaban](https://millionrounds.com/person/stephen-balaban) Mentions [Auren Hoffman](https://millionrounds.com/fund/auren-hoffman)[Bobby Goodlatte](https://millionrounds.com/fund/bobby-goodlatte)[Zach Weinberg](https://millionrounds.com/fund/zach-weinberg)[Flatiron Health](https://millionrounds.com/fund/flatiron-health)[Operator Partners](https://millionrounds.com/fund/operator-partners) About this episode TBPN.com is made possible by: Ramp - https://ramp.com Figma - https://figma.com Vanta - https://vanta.com Linear - https://linear.app Eight Sleep - https://eightsleep.com/tbpn Wander - https://wander.com/tbpn Public - https://public.com AdQuick - https://adquick.com Bezel -… More on the show's page Listen on Apple PodcastsThe show's page
- [TBPN](https://millionrounds.com/podcasts/tbpn) · 23 Apr 2025 · 2h 57m Bridgit Mendler, Aravind Srinivas, Ted Feldmann, Karol Hausman & Lachy Groom, Sam Lessin, Kevin Systrom Says Meta Denied Instagram Resources With [Sam Lessin](https://millionrounds.com/person/sam-lessin) Mentions [Aravind Srinivas](https://millionrounds.com/fund/aravind-srinivas)[Kevin Systrom](https://millionrounds.com/fund/kevin-systrom)[Lachy Groom](https://millionrounds.com/fund/lachy-groom) About this episode TBPN.com is made possible by: Ramp - https://ramp.com Eight Sleep - https://eightsleep.com/tbpn Wander - https://wander.com/tbpn Public - https://public.com AdQuick - https://adquick.com Bezel - https://getbezel.com Numeral - https://www.numeralhq.com Polymarket - https://polymarket.com… More on the show's page Listen on Apple PodcastsThe show's page
- [TBPN](https://millionrounds.com/podcasts/tbpn) · 31 Mar 2025 · 3h 7m Aaron Levie, Alexis Ohanian, R.J. Halperin, Cristóbal Valenzuela, David Zagaynov, Sam Lessin, xAI Merges with X, Isomorphic Labs Raises $600M With [Sam Lessin](https://millionrounds.com/person/sam-lessin) Mentions [Aaron Levie](https://millionrounds.com/fund/aaron-levie)[Alexis Ohanian](https://millionrounds.com/fund/alexis-ohanian) About this episode TBPN.com is made possible by: Ramp - https://ramp.com Eight Sleep - https://eightsleep.com/tbpn Wander - https://wander.com/tbpn Public - https://public.com AdQuick - https://adquick.com Bezel - https://getbezel.com Numeral - https://www.numeralhq.com Polymarket - https://polymarket.com… More on the show's page Listen on Apple PodcastsThe show's page
- [TBPN](https://millionrounds.com/podcasts/tbpn) · 14 Mar 2025 · 2h 51m Logan Bartlett, Kian Sadeghi, Joshua Steinman, Sam Lessin and Seth Rosenberg Debate, Intel's New CEO With [Logan Bartlett](https://millionrounds.com/person/logan-bartlett)[Sam Lessin](https://millionrounds.com/person/sam-lessin)[Seth Rosenberg](https://millionrounds.com/person/seth-rosenberg) About this episode TBPN.com is made possible by: Ramp - https://ramp.com Eight Sleep - https://eightsleep.com/tbpn Wander - https://wander.com/tbpn Public - https://public.com AdQuick - https://adquick.com Bezel - https://getbezel.com Polymarket - https://polymarket.com Follow TBPN: https://TBPN.com… More on the show's page Listen on Apple PodcastsThe show's page
- [TBPN](https://millionrounds.com/podcasts/tbpn) · 8 Mar 2025 · 2h 50m Alexis Ohanian, Will Manidis, Sam Lessin, Mistow Teel, La Sombrita, Optimism on the Timeline With [Sam Lessin](https://millionrounds.com/person/sam-lessin) Mentions [Alexis Ohanian](https://millionrounds.com/fund/alexis-ohanian) About this episode TBPN.com is made possible by: Ramp - https://ramp.com Eight Sleep - https://eightsleep.com/tbpn Wander - https://wander.com/tbpn Public - https://public.com AdQuick - https://adquick.com Bezel - https://getbezel.com Follow TBPN: https://TBPN.com https://x.com/tbpn… More on the show's page Listen on Apple PodcastsThe show's page
- [Turpentine VC](https://millionrounds.com/podcasts/turpentine-vc) · 19 Dec 2023 · 57 min E18: Sam Lessin on What's Going to Happen to VC in 2024 With [Sam Lessin](https://millionrounds.com/person/sam-lessin) About this episode Today we’re back with Sam Lessin for a round 2 focused on the changing landscape of venture. We dig into the viability of M&A as a strategy for startups, “its always been crypto”, media businesses, and the role of reputation systems. If you need an ecommerce platform, check out our sponsor Shopify:… More on the show's page Listen on Apple PodcastsThe show's page

### Mentioned in

Episodes that name Sam Lessin in their description, which is not the same as being on them.

- [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) · 22 Oct 2026 · 1h 41m We asked 3 VCs: would you invest in Elizabeth Holmes’ next startup? | E2353 With [Elizabeth Holmes](https://millionrounds.com/person/elizabeth-holmes) Mentions [Jason Calacanis](https://millionrounds.com/fund/jason-calacanis)[Slow Ventures](https://millionrounds.com/fund/slow-ventures)[Sam Lessin](https://millionrounds.com/person/sam-lessin) About this episode This Week In Startups is made possible by: DigitalOcean - Head to https://do.co/twist to start building on DigitalOcean's AI-Native Cloud today, and cut your AI workload costs by up to 50% Odoo: The all-in-one business platform. Your first app is free! Get started today at https://odoo.com/twist… Listen on Apple Podcasts
- [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) · 13 May 2026 · 1h 25m How Many Startups Will Survive OpenAI? | E2288 Mentions [Everywhere Ventures](https://millionrounds.com/fund/everywhere-ventures)[Slow Ventures](https://millionrounds.com/fund/slow-ventures)[Dave McClure](https://millionrounds.com/person/dave-mcclure)[Jenny Fielding](https://millionrounds.com/person/jenny-fielding)[Sam Lessin](https://millionrounds.com/person/sam-lessin) About this episode This Week In Startups is made possible by:Pilot -⁠ https://Pilot.com/TWIST⁠Grasshopper Bank -⁠ https://Grasshopper.bank/TWIST⁠Quo -⁠ https://Quo.com/TWiST⁠Plaud - ⁠https://Plaud.ai/twist⁠Anthropic just declared every unauthorized secondary sale of its stock "void", naming Hiive, Forge, Sydecar,… More on the show's page Listen on Apple PodcastsThe show's page
- [The Twenty Minute VC](https://millionrounds.com/podcasts/20vc) · 5 Jun 2025 · 1h 23m 20VC: Is Chamath Right: Is DPI The Only Thing That Matters | Does OpenAI Even Matter | Mary Meekers AI Report: The Analysis| IPO Breakdown: Chime, Circle & Thoma Bravo's New Fund With [Mary Meeker](https://millionrounds.com/person/mary-meeker) Mentions [Thoma Bravo](https://millionrounds.com/fund/thoma-bravo)[Sam Lessin](https://millionrounds.com/person/sam-lessin) About this episode Agenda: 00:00 – The Most Unfiltered Episode Ever Begins 03:30 – Does OpenAI Even Matter? Sam Lessin Says Maybe Not. 05:45 – TVPI Is Bullshit? 09:20 – Asset Gatherers vs Real Investors: Who Actually Wins? 12:15 – The Death of the Billion-Dollar VC Fund? 16:00 – Mid-Tier VC Funds Are Getting… More on the show's page Listen on Apple PodcastsThe show's page
- [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) · 12 Feb 2025 · 1h 5m Slow Ventures' Creators Fund and Helion Energy's Fusion Reactors | 2084 Mentions [Slow Ventures](https://millionrounds.com/fund/slow-ventures)[Creator Fund](https://millionrounds.com/fund/creator-fund)[Alex Wilhelm](https://millionrounds.com/person/alex-wilhelm)[Sam Lessin](https://millionrounds.com/person/sam-lessin) About this episode This Week in Startups is brought to you by… Vanta. Get $1000 off your SOC 2 athttps://www.vanta.com/twist Northwest Registered Agent. Form your entire business identity in just 10 clicks and 10 minutes. Get more privacy, more options, and more done, visitnorthwestregisteredagent.com/twist today!… More on the show's page Listen on Apple PodcastsThe show's page
- [Turpentine VC](https://millionrounds.com/podcasts/turpentine-vc) · 19 Mar 2024 · 55 min E31: Slow's Will Quist on VC's Job to Fund the Creation of New Data Sets With [Will Quist](https://millionrounds.com/person/will-quist) Mentions [Greylock](https://millionrounds.com/fund/greylock-partners)[Slow Ventures](https://millionrounds.com/fund/slow-ventures)[Michael J](https://millionrounds.com/person/michael-j)[Sam Lessin](https://millionrounds.com/person/sam-lessin) About this episode Today's episode features an interview with Will Quist, partner at Slow Ventures. In this conversation Will talks about his transition from water polo player to helping build Slow, Slow's unique thesis in venture, the old model of VC versus new VC, and treating venture capital like a phD program.… More on the show's page Listen on Apple PodcastsThe show's page

Episodes of [the shows we follow](https://millionrounds.com/podcasts), matched by name. Not them? [Tell us](https://millionrounds.com/corrections?person=sam-lessin).

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