Investing Profile

Yan-David Erlich(181)

InvestorAngel

COO & CRO at Weights & Biases: The AI Developer Platform

San Francisco, California

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Yan-David Erlich's investing connections

46 Investors

Connected to Satya Patel (Homebrew), Aileen Lee (Cowboy Ventures), Pete Flint (NFX), and 43 other investors on Signal.

Networks Yan-David is a member of

Google Network

312 CONNECTIONS

Stanford University Graduate School of Business Network

304 CONNECTIONS

Battery Ventures Network

36 CONNECTIONS

Trinity Ventures Network

17 CONNECTIONS

Rice University Network

17 CONNECTIONS

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Current Investing Position

Angel

Investment Range

$10K - $250K

Sweet Spot

$100K

Investments On Record

Yan-David Erlich's Investments On Record (17)

Company	StageDateRound Size	Total Raised
Axiom Math AI	SeedOct 2025$64M	$64M
Unblocked	Series AMay 2025$20M	$28M
Co-investors: Dave Johnson (Intel Capital), John Lilly (Greylock), David Johnson (Intel Capital), Bubba Murarka (DFJ), Milun Tesovic (Expa), Rob Toews (Radical Ventures), Mike Abbott, Mike Vernal, Eric Futoran, Stewart Butterfield, Quinn Slack, Nitay Joffe
Twin	Pre SeedJan 2024$3M	$3M
Co-investors: Matthew Hartman (Factorial), Guillaume Houzé (Motier Ventures), Nicolas Essayan (Motier Ventures), Quentin Nickmans (eFounders), Rand Hindi, Charles Gorintin, Alexandre Scialom, Thibaud Elziere, Florian Douetteau
Abacus.AI	Series COct 2021$50M Series BNov 2020$22M	$90M
Co-investors: Avichal Garg (Electric Capital), Deep Nishar (General Catalyst), David Cahn (Sequoia Capital), Lan Xuezhao (Basis Set Ventures), Jeannette zu Fürstenberg (General Catalyst), Jerry Yang (AME Cloud Ventures), Ram Shriram (Sherpalo Ventures), Keval Desai (InterWest), Paul Buchheit (Y Combinator), Eric Schmidt (Innovation Endeavors), Mike Volpi (Hanabi Capital), Josh Shirazi (Alkeon Capital), Jon Sakoda (Decibel Partners), Erica Ruliffson Schultz (Operator Collective), Jerry Yang (Hardware Club), Mariam Naficy (Heretic Ventures), Neha Narkhede, Elad Gil
Weights & Biases	Series COct 2021$140M	$250M
Co-investors: Casber Wang (Sapphire Ventures), Aydin Senkut (Felicis Ventures), David Cahn (Sequoia Capital), George Mathew (Insight Partners), Ed Roman (Hack VC), Nat Friedman (C2 Investment), Jay Simons (Bond), Daniel Gross (C2 Investment), Richard Socher (AIX Ventures), Tom Preston-Werner (Preston-Werner Ventures), Pieter Abbeel (AIX Ventures), Jeff Hammerbacher
Infinitus Systems	Series AFeb 2021$21M	$100M
Co-investors: Krishna Yeshwant (GV (Google Ventures)), Scott Kupor (Andreessen Horowitz), Morgan Livermore (Quiet Capital), Diego Oppenheimer, Gokul Rajaram
Impira	Series BMar 2019$25M	$32M
Co-investors: Barry Eggers (Lightspeed Venture Partners), Steve Herrod (General Catalyst)
stensul	Series AJun 2018$7M	$7M
Co-investors: Jeff Clavier (Uncork Capital), Chris Fralic (First Round Capital), Patrick Meenan (Arthur Ventures), Alex Gurevich (Javelin Venture Partners), David Wanek (Western Technology Investment)