David Brenner
Founder, Partner at Marathon Ventures Media Sales
New York, New York
David Brenner, Founder, Partner at Marathon Ventures Media Sales is an active investor based in New York, New York. This profile covers what David Brenner backs, at which stage, and how founders can reach out in 2026.
David Brenner is the Founder and Partner at Marathon Ventures Media Sales.
David Brenner invests in Media & Content and Consumer & Retail, typically at Seed, Series A and Early Stage Venture.
- Investor type
- VC
- Stages
- SeedSeries AEarly Stage Venture
- Invests in
- Media & ContentConsumer & Retail
- Location
- New York, New York
- Typical check
- $500K
How to reach David Brenner
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About this profile
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Round Funded. "David Brenner." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/david-brenner
Frequently Asked Questions
Who is David Brenner?
David Brenner, Founder, Partner at Marathon Ventures Media Sales is an active investor based in New York, New York. David Brenner invests in Media & Content and Consumer & Retail, typically at Seed, Series A and Early Stage Venture.
What does David Brenner invest in?
David Brenner invests in Media & Content and Consumer & Retail, typically at Seed, Series A and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does David Brenner invest at?
David Brenner typically invests at Seed, Series A and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is David Brenner's typical check size?
David Brenner typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.