Bob McGrew
About Bob McGrew
Bob McGrew was an early employee at PayPal, where he worked on cryptography before the eBay acquisition in 2002. He then spent about a decade at Palantir as one of its earliest engineers, and later led engineering and product management there.
He joined OpenAI in 2017 and became Chief Research Officer. He left in 2024, with his departure reported as September 25, 2024. Since then he has appeared on podcasts such as Sequoia Capital's Training Data and has been listed as an adviser to Thinking Machines Lab.
In 2026 he began building Arda, an AI platform for factory automation. The Information reported he is co-founding it with AI researcher Augustus Odena. Press reports citing the Wall Street Journal say Arda is raising about $70M at a $700M valuation, co-led by Founders Fund and Accel. Those figures are reported, not confirmed by the company.
McGrew's angel activity is mostly public through funding announcements that list him among the angels in a round. Crunchbase lists 3 personal investments for him, and its latest is the Sycamore seed round. Tracxn lists only Outtake. The databases are incomplete, so this page covers only the investments that press releases and news coverage confirm.
He has also said publicly that he is an investor in and adviser to Distyl, a company building enterprise AI systems, per a third-party summary. Founders should treat that as a secondary source.
Sycamore: in March 2026 the company announced a $65M seed round led by Coatue and Lightspeed. Sycamore is building a trusted operating system for enterprise AI agents and is led by former Atlassian CTO Sri Viswanath. McGrew was named as an angel in the round. On X he wrote that AI adoption still lags AI capabilities and that organizations should be far more automated than they are.
Outtake: in January 2026 the digital trust and anti-impersonation company raised a $40M Series B led by ICONIQ. McGrew was one of the angels named in the round, alongside Satya Nadella, Nikesh Arora and others.
The public record points to enterprise AI, AI agents, AI security and AI-driven industrial software. The rounds he is named in are a $65M seed (Sycamore) and a $40M Series B (Outtake), so he has joined both early and later rounds led by institutional investors. The companies named are US-based. McGrew has not published a check size, a fund or a formal investment thesis that we found, so none is given here. On podcasts he has talked about where AI startups can build defensible positions. Founders can read those interviews for his views.
- Sycamore: enterprise AI agent operating system; angel in the $65M seed announced March 2026.
- Outtake: digital trust platform against AI-driven impersonation; angel in the $40M Series B, January 2026.
- Distyl: enterprise AI systems company; McGrew has publicly described himself as an investor and adviser (year not confirmed).
- techcrunch.com/2026/03/30/former-coatue-partner-raises-huge-65m-seed-f
- siliconangle.com/2026/03/30/sycamore-raises-65m-silicon-valley-heavywe
- x.com/bobmcgrewai
- regtechanalyst.com/outtake-secures-40m-series-b-for-digital-trust-plat
- pulse2.com/outtake-40-million-series-b
- crunchbase.com/person/bob-mcgrew
- tracxn.com/d/people/bob-mcgrew/__P9zVzqsVQdkztbQWcnEAnLBOG1sYjFopMmyID
- aiwiki.ai/wiki/bob_mcgrew
Investing activity
Bob McGrew appears in 1 AI deal tracked by the Lounge deals desk, rounds totalling $65M. The rounds are mostly Seed, with a median round size of $65M. The most recent is Sycamore (Seed, $65M, Mar 2026).
Bob McGrew most often invests alongside Lightspeed Venture Partners, Coatue, Soham Mazumdar and Dell Technologies Capital, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Bob McGrew
Does Bob McGrew invest in AI startups as an angel?
Yes. Press coverage names him as an angel in Sycamore's $65M seed (March 2026) and Outtake's $40M Series B (January 2026). Both are AI-related companies.
What is Bob McGrew's angel check size?
He has not published a check size, and we found no reliable report of one. Founders should not assume a figure.
What stage does Bob McGrew invest in?
The public record shows a seed round (Sycamore) and a Series B (Outtake), both alongside institutional lead investors. He has not stated a stage preference.
Who is Bob McGrew?
He is a former Chief Research Officer at OpenAI who earlier worked at PayPal and was an early Palantir engineer and executive. He is now building Arda, an AI factory-automation company.
How can founders contact Bob McGrew?
He posts on X as @bobmcgrewai. We did not find a verified personal website or LinkedIn profile, and he has not published a pitch process.
What AI sectors does Bob McGrew back?
Named investments are in enterprise AI agents (Sycamore), AI-era digital trust and security (Outtake) and enterprise AI systems (Distyl). His own company, Arda, targets manufacturing.
Is Bob McGrew an angel investor?
Yes. Bob McGrew invests personally as an angel.
What AI companies has Bob McGrew invested in?
Bob McGrew's AI investments include Sycamore. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Bob McGrew invest at?
In the rounds tracked on Lounge, Bob McGrew has invested at Seed, with a median round of $65M.
Who does Bob McGrew co-invest with?
Bob McGrew's most frequent co-investors on Lounge are Lightspeed Venture Partners (1 deal), Coatue (1 deal), Soham Mazumdar (1 deal), Dell Technologies Capital (1 deal) and Rajiv Gupta (1 deal).