Mark Suster

Background

Mark Suster is the Managing Partner of Upfront Ventures, the largest venture capital firm in Los Angeles, where he has worked since 2007 ¹². Born April 30, 1968, Suster holds a BA in Economics from the University of California, San Diego and an MBA from the University of Chicago Booth School of Business ¹³.

Before venture capital, Suster spent nearly ten years at Accenture working in Europe, Japan, and the United States ¹³. He is a two-time entrepreneur. In 1999, he co-founded BuildOnline, a construction collaboration technology company based in Europe, with Irish real estate entrepreneur Brian Moran; BuildOnline merged with US-based rival Citadon in December 2006, and Citadon was later acquired by Sword Group ¹³. By September 2006, Suster had already left Citadon to establish Koral, a content collaboration software business, which was acquired by Salesforce.com in April 2007 ¹³. Following the acquisition, he served as Vice President of Product Management at Salesforce before joining Upfront Ventures (then GRP Partners) later that year ¹³.

Upfront Ventures was founded in 1996 by Yves Sisteron, Steven Dietz, and Steve Lebow as GRP Partners, originally investing in retail and restaurant chains including P.F. Chang’s, Costco, and Ulta ⁴. The firm rebranded to Upfront Ventures in 2013 and shifted its focus to early-stage technology companies ⁴⁵. As of 2022, Upfront manages approximately $2 billion in total raised capital across multiple funds ⁴⁶.

In 2009, Suster co-founded Launchpad LA, a startup accelerator in Los Angeles, with Adam Lilling, to help local entrepreneurs build relationships and grow without relocating to Northern California ¹⁷. He also co-hosts the annual Upfront Summit, an invite-only VC conference in Los Angeles that draws over 1,000 attendees to venues such as Paramount Studios, the Rose Bowl, and the Dolby Theatre ³⁸.

Suster is widely known for his blog “Both Sides of the Table,” which covers term sheets, board dynamics, and fundraising strategy from the perspective of an operator-turned-investor ²⁹.

Stated Thesis

(Self-reported: These represent what Suster says publicly about his investing approach. See Inferred Thesis for analysis of actual investment behavior.)

Suster has publicly described his investment decision framework as “70% management, 30% market” — prioritizing the quality of the founding team over market opportunity when evaluating early-stage investments ¹⁰¹¹. He calls this “The Entrepreneur Thesis”: his philosophy is to back the best possible entrepreneurs and stick by them through the growth or sale of the company ¹¹.

On evaluating founders over time, Suster coined the concept of “Invest in Lines, Not Dots,” arguing that a single meeting provides only one data point and that investors should build trust through multiple interactions before committing ⁹¹².

In 2021, Suster stated that the focus had evolved further: “The bet we’re making now is on founder skills,” rather than customers or products ¹³.

Suster has also been vocal about the importance of alternative exit strategies, stating that “venture capital needs to start emulating private equity where it’s acceptable for assets to change hands” and that “the secondary markets are a really important venture, and I think they will mature over the next 10 years as more people learn how to price them” ¹⁴.

On AI, Suster has maintained that “AI is everything, and it’s gonna be pervasive,” but does not believe AI deserves its own separate investment category ¹⁴.

Inferred Thesis

The analysis below is based on 22 verified investments personally led by or attributed to Mark Suster, drawn from Upfront Ventures’ portfolio page, press coverage, and aggregator sites ^12341516.

Sector concentration (based on 22 verified investments): - Consumer / marketplace: 6 of 22 (27%) — Ring, Bird, ThredUp, Goat, MakeSpace, mitu - SaaS / enterprise software: 5 of 22 (23%) — Invoca, GumGum, Density, Tact, Osmo - Media / content: 3 of 22 (14%) — Maker Studios, Nanit, uBeam - Healthcare / biotech: 3 of 22 (14%) — Modern Animal, Rula, Bionaut Labs - Defense / hardtech: 3 of 22 (14%) — Apex, Pragma, and other defense-tech investments referenced in podcast appearances - Fintech: 2 of 22 (9%) — GoodRx, TrueCar

Key patterns:

• Strong LA bias: Suster is the most prominent champion of the Los Angeles tech ecosystem. The majority of his portfolio companies are headquartered in Southern California, consistent with Upfront’s identity as LA’s largest VC firm ²⁴.

• Operator empathy: As a two-time founder himself, Suster’s investments lean heavily toward companies where he can provide hands-on operational support. He joins boards and takes active roles in recruitment and strategy for portfolio companies ²³.

• Check size range: $750K to $7M, with a target of approximately $1M for initial checks, scaling up for follow-on rounds ¹⁵¹⁶. Upfront’s overall investment size flexibility ranges from $500K to $27M across seed and growth vehicles ⁶.

• Stage focus: Primarily seed and Series A, though Upfront’s growth fund allows participation in later rounds for breakout portfolio companies ⁶.

• Hardware-meets-software pattern: Several of Suster’s most notable investments combine physical products with software platforms — Ring (smart doorbells), Bird (electric scooters), Nanit (baby monitors), Osmo (educational hardware). This pattern is not prominently featured in his stated thesis.

• Expanding into hardtech: Recent investments in Apex (satellite bus company), Pragma (gaming infrastructure), and Bionaut Labs (micro-robotics for drug delivery) signal a shift toward defense, space, and deep-tech sectors ¹⁷.

• Co-investor patterns: Frequently co-invests with True Ventures (Modern Animal), Founders Fund (Modern Animal), Sequoia Capital (Bird), and other top-tier firms ¹⁸¹⁹.

• Notable gap: Despite stating his thesis is “70% management,” several of his highest-profile investments (Ring, Bird) were in highly capital-intensive, hardware-dependent businesses with significant operational complexity — suggesting Suster has a higher risk tolerance for execution-heavy businesses than his stated framework implies.

Portfolio

This table represents 22 verified investments attributed to Mark Suster personally out of Upfront Ventures’ portfolio of 200+ total investments. Years marked with ~ are estimates based on company founding dates and available press coverage. Many of Upfront’s investments are led by other partners (Kara Nortman, Kobie Fuller, Greg Bettinelli, etc.) and are not included here.

In Their Own Words

“I am on the record as saying I’m 70 percent management, 30 percent market. My thesis is to back the best possible entrepreneurs I can and to stick by them through the growth or sale of the company.” — Mark Suster, “The Entrepreneur Thesis,” Both Sides of the Table blog ¹¹.

“The first time I meet you, you are a single data point. A dot. I have no reference point to judge whether you were higher or lower 3 months ago. Because I have no observation points from the past, I have no sense for where you will be in the future. It is very hard for me to make a commitment.” — Mark Suster, “Invest in Lines, Not Dots,” Both Sides of the Table blog ⁹.

“The bet we’re making now is on founder skills, instead of customers or products.” — Mark Suster, TechCrunch interview, September 2021 ¹³.

“Venture capital needs to start emulating private equity where it’s acceptable for assets to change hands.” — Mark Suster, Fortune Brainstorm Tech panel, July 2024 ¹⁴.

“The secondary markets are a really important venture, and I think they will mature over the next 10 years as more people learn how to price them.” — Mark Suster, Fortune Brainstorm Tech panel, July 2024 ¹⁴.

“AI is everything, and it’s gonna be pervasive.” — Mark Suster, Fortune Brainstorm Tech panel, July 2024 ¹⁴.

“VCs are essentially lemmings. They all fund the same thing.” — Mark Suster, Fortune Brainstorm Tech panel, July 2024 ¹⁴.

“Jamie Siminoff is not only one of the single best true entrepreneurs in Los Angeles, he’s amongst the best we’ve worked with in the country.” — Mark Suster, on Ring founder Jamie Siminoff ²¹.

“In a world where all investors think about AI, it’s refreshing to back a company dedicated to something universally loved — animals.” — Mark Suster, on Modern Animal, September 2025 ¹⁸.

“At my age I’m a better coach than player. I can’t quite hit the jump shots or run as fast as I used to.” — Mark Suster, Product Hunt Live Chat, on transitioning from founder to investor ²³.

What Founders Say

Steven Eidelman, Founder and CEO of Modern Animal, stated: “We’re focused on deploying capital strategically — always in ways that improve care quality and provider experience,” in an announcement noting that Suster, who backed Modern Animal since its 2019 seed round, had joined the company’s board ¹⁸.

No additional independently sourced founder testimonials found. Suster’s reputation as an operator-turned-investor is widely referenced in press coverage, but specific founder quotes about their experience working with him as a board member or investor were not located through dedicated search.

Connections

• Board member, Modern Animal — joined board in 2025 alongside Karen Boone (former CFO, Restoration Hardware), Tony Conrad (True Ventures), and Robbie Horwitz (Addition) ¹⁸
• Board member, Density ¹⁶
• Board member, GumGum ¹⁶
• Board member, Nanit ¹⁶
• Board member, Maker Studios (2011-2014) — prior to Disney acquisition ¹³
• Advisor, DonorsChoose.org ¹⁶
• Co-founder, Launchpad LA (2009) — with Adam Lilling ⁷
• Host, Upfront Summit — annual invite-only VC conference in Los Angeles ³⁸
• Former VP of Product Management, Salesforce.com (2007) — following Koral acquisition ¹³
• Former consultant, Accenture (~1990-1999) — Europe, Japan, and U.S. offices ¹³
• Co-managing partners at Upfront: Yves Sisteron (founder), Kara Nortman ²⁴
• Frequent co-investor: True Ventures, Founders Fund, Sequoia Capital ¹⁸¹⁹

Sources