Simon Rothman

Background

Simon Rothman is a Venture Partner at Greylock Partners, where he leads the firm’s marketplace investment practice ¹. He is widely regarded as one of the foremost experts on marketplace business models, having spent his career building and investing in them.

Before venture capital, Rothman worked as an Engagement Manager at McKinsey & Company ². He joined eBay in 1999 when it was a small US collectibles auction business and helped scale the company to nearly 200 million users generating over $40 billion in merchandise sales ³. While at eBay, Rothman founded eBay Motors and served as its Global Vice President & General Manager, building it into a $14 billion-a-year global business and the world’s number one automotive marketplace within six and a half years ³. He also led eBay’s US Operations, a $10 billion business unit ².

After eBay, Rothman founded Glyde, a peer-to-peer e-commerce marketplace for electronics ⁴. He joined Greylock in 2011 as an Executive-in-Residence, advising the firm’s network effects businesses and marketplace portfolio companies including Lyft, Poshmark, and Wanelo ³. In August 2013, Greylock promoted Rothman to Partner and announced a $100 million commitment to invest in marketplace entrepreneurs, which Rothman managed ³. He is currently listed as Venture Partner at the firm ⁵.

Rothman served as an early-stage board member and advisor at Tesla Motors from 2005 to 2009 ⁶. He holds a degree from Harvard University ².

Stated Thesis

Rothman has publicly stated his belief that marketplaces represent the ideal business model. In a 2012 TechCrunch guest post, he wrote that “the two elements that bind all marketplaces are network effects (a good thing) and the chicken-and-egg problem (not such a good thing). Obviously, marketplaces are tough to build. But they’re even harder to kill — And they can be incredibly durable and profitable once they reach liquidity” ⁷.

He has described his investment thesis around the concept of “distributed networks,” stating: “I believe in distributed networks. If you look back at the industrial revolution, it was about centralizing tools of production, centralizing assets and people, and right now we are unbundling the industrial revolution. We are going from centralized assets and people to decentralized and that transition is moving us from companies to people. We will see these distributed networks and marketplaces that will eat a lot of industries and in the process redefine workers, work and companies. It is a thesis that is going to last a generation” ⁸.

In a 2016 Harvard Business Review article co-authored with Harvard Business School professor Andrei Hagiu, Rothman argued that while network effects create defensibility, marketplaces face several critical pitfalls including growing too fast too early, failing to foster sufficient trust and safety, and ignoring risks ⁹.

Greylock’s stated focus for the $100 million marketplace commitment spans transportation, fashion, healthcare, and other sectors where technology platforms can facilitate transactions between independent suppliers and customers ³.

Inferred Thesis

Based on 16 verified investments and advisory roles, Rothman’s actual portfolio reveals a strong concentration in marketplace and transportation businesses:

Sector breakdown (16 verified companies): - Transportation/mobility/automotive: 8 of 16 (50%) — Tesla, eBay Motors (founded), Lyft, Convoy, Nuro, CarGurus, Getaround, Plug - Food/dining: 3 of 16 (19%) — Sprig, EatWith, Ritual - Consumer marketplaces (non-transport): 3 of 16 (19%) — Poshmark, Wanelo, Fiverr - Autonomous vehicles/robotics: 2 of 16 (13%) — Nuro, Aurora (overlap with transportation) - Automotive repair: 1 of 16 (6%) — Fixico

Stage distribution: Rothman invests across seed through Series B, with a preference for Series A as the primary entry point for Greylock-led deals. His angel investments and advisory roles tend to be earlier stage.

Geographic focus: Predominantly US-based companies (San Francisco, Seattle, Los Angeles), with occasional international investments such as Fixico (Amsterdam) and EatWith (Israel/global).

Check size: Ranges from $250K to $15M through Greylock, with smaller angel checks outside the firm ¹.

Notable pattern: Rothman’s portfolio is overwhelmingly concentrated in transportation and automotive — 50% of verified investments — far exceeding the breadth suggested by his general “marketplace” thesis. His background as eBay Motors founder and early Tesla board member clearly shapes his investment lens. Nearly every company in his portfolio involves either moving physical goods, moving people, or facilitating transactions around vehicles.

Co-investor patterns: Reid Hoffman appears across multiple Rothman deals through their shared Greylock affiliation (Convoy). Autotech Ventures co-invested in both Fixico and Plug, reflecting Rothman’s automotive/mobility network.

Portfolio

This table represents a partial view. Rothman is described as a “long time angel investor” with additional investments not publicly documented ⁶.

In Their Own Words

“I believe marketplaces have the perfect business model. As they get bigger, marketplaces grow stronger and more durable.” — Simon Rothman, interview ⁸

“Take more risk. The more risk I take, the more I realize the more risk I should take. There is almost no threshold of risk mitigation if you live in this world. You have to take as much risk as you can bear and then maybe a little bit more.” — Simon Rothman, interview ⁸

“I used to think that VC was more about money, but from an operator’s standpoint, being a VC is really about adding value to a startup.” — Simon Rothman, interview ⁸

“EatWith is building a business that takes advantage of a few significant macro trends: People are becoming more comfortable with the mechanics of the marketplace economy, online technology platforms are making it easier for people to connect offline, and foodie culture has meant more people are actively seeking out unique dining experiences. But the most important drivers of our investment in EatWith are the product and the team. Guy and Shemer have built an incredible platform and going to an EatWith dinner is an unquestionably magical experience.” — Simon Rothman, EatWith Series A announcement, September 2014 ¹¹

“Fixico’s use of network dynamics to connect repair shops with vehicle owners has the potential to transform the car repair industry fundamentally.” — Simon Rothman, Fixico Series A announcement, March 2021 ⁶

What Founders Say

Reid Hoffman, co-founder of LinkedIn and Greylock partner, said of Rothman: “We’re pleased Simon will continue on the Greylock team as a Partner. His unique experience of helping to scale one of the most definitive marketplaces in the world has already proved to be invaluable to our entrepreneurs” ³.

No independently sourced founder testimonials from portfolio company founders found. While Rothman has served on the boards of multiple portfolio companies (Convoy, Nuro, Ritual, Sprig, EatWith), specific public statements from those founders about their experience working with Rothman were not located during this research.

Connections

• Board member, Tesla Motors (2005-2009) — early-stage board director and advisor ⁶
• Board member, CarGurus (~2006-2018) — early-stage board director ^{6 13}
• Board member, Convoy (2015-present) — alongside Reid Hoffman (Greylock) ¹²
• Board member, Nuro (2017-present) — Greylock Series A investment ¹⁴
• Board member, Ritual (2015-present) — Greylock Series A investment ¹⁵
• Board member, EatWith (2014-present) — Greylock Series A investment ¹¹
• Supervisory Board, Fixico (2021-present) — angel investment ⁶
• Former advisor, Lyft — during Greylock EIR tenure ³
• Former advisor, Poshmark — corporate officer/principal role ¹³
• Co-author with Andrei Hagiu (Harvard Business School) — “Network Effects Aren’t Enough,” Harvard Business Review, April 2016 ⁹
• Organized Greylock Marketplace Conference — featured speakers including Brian Chesky (Airbnb CEO), John Donahoe (eBay CEO), Reid Hoffman, and Logan Green (Lyft co-founder) ³
• Former McKinsey & Company Engagement Manager ²

Sources