Mark Anderson
About Mark Anderson
Mark Anderson is a Venture Partner at Lightspeed Venture Partners, a role Crunchbase dates from June 2020. Crunchbase lists 12 earlier jobs, including President of Revenue at Cloudflare.
His LinkedIn profile is based in the San Francisco Bay Area. In it he says he is open to talking with people working on something in cyber, sales or AI.
Crunchbase lists 3 personal investments for Mark Anderson and shows Tolmo as the most recent. It also lists two exits, Spiff and Neosec. Spiff is a commission automation platform for sales organizations. Neosec uses AI-based behavioral analytics for threat hunting. Crunchbase does not show dates or amounts for these entries, so they are not given here. A 2025 cybersecurity angel list also names him and mentions Neosec.
Mark Anderson took part in Tolmo's seed round, announced in June 2026 at $22M. Per Dealroom, Accel led it, and Tolmo builds AI security agents for production environments.
His LinkedIn feed also shows him sharing news from Braintrust, an AI product quality company, and from Rox, a revenue agents company. Those are shared posts. They are not confirmed investments.
The public record points to cybersecurity, sales and revenue technology, and AI. These match the areas he names on LinkedIn and the companies in his Crunchbase listing. Tolmo was a seed round. No check size has been published for his personal investments, so none is given here.
- Tolmo: AI security agents for cloud applications and infrastructure. He is listed as an investor in its $22M seed round announced in June 2026.
- Spiff: commission automation platform for sales organizations. Crunchbase lists it as an exit.
- Neosec: AI-based API security and threat hunting. Crunchbase lists it as an exit.
Investing activity
Mark Anderson appears in 1 AI deal tracked by the Lounge deals desk, rounds totalling $22M. The rounds are mostly Seed, with a median round size of $22M. The most recent is Tolmo (Seed, $22M, Jun 2026).
Mark Anderson most often invests alongside Accel, Y Combinator, Motier Ventures and Jason Lemkin, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Mark Anderson
Does Mark Anderson invest in AI startups?
Yes. He is listed as an investor in Tolmo's $22M seed round from June 2026. Tolmo builds AI security agents.
What is Mark Anderson's background?
He is a Venture Partner at Lightspeed Venture Partners and previously served as President of Revenue at Cloudflare, according to Crunchbase.
What check size does Mark Anderson write?
His personal check size is not public. Third-party aggregator figures appear to describe firm-level activity, so they are not used here.
What stage does Mark Anderson back?
His most recent listed investment, Tolmo, was a seed round. He has not published a stage thesis.
Which sectors interest Mark Anderson?
His public investments and LinkedIn posts cover cybersecurity, sales and revenue software, and AI. He says he is open to conversations about cyber, sales or AI.
How can founders contact Mark Anderson?
His LinkedIn profile says he welcomes founders working in cyber, sales or AI to reach out. No personal website or X account was found.
Is Mark Anderson an angel investor?
Yes. Mark Anderson invests personally as an angel.
What AI companies has Mark Anderson invested in?
Mark Anderson's AI investments include Tolmo. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Mark Anderson invest at?
In the rounds tracked on Lounge, Mark Anderson has invested at Seed, with a median round of $22M.
Who does Mark Anderson co-invest with?
Mark Anderson's most frequent co-investors on Lounge are Accel (1 deal), Y Combinator (1 deal), Motier Ventures (1 deal), Jason Lemkin (1 deal) and Michael Callahan (1 deal).