Backing generational founders since 2005 🗽
New York, NY
Joined November 2009
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Congrats to @maximbarkogan, @gil_elbaz_, and the entire @Onyx_Security team for being named to the 2026-27 Fortune Cyber 60 🚀 Proud to be on the journey with you!
"Locking yourself into a single model is putting an enormous amount of risk into your business."
We were honored to have @EnoReyes, Cofounder of @FactoryAI take the stage at FirstMark Guilds Summit to share his thoughts on agentic software development and how they're helping companies build autonomous software factories.
"Stop trying to be everything to everyone."
"If you pretend to be something you're not, you'll be seen through and no one will believe a word you say."
CFOs of Shopify (Jeff Hoffmeister) and Circle (Jeremy Fox-Geen) on going public and what it takes to win in the public markets 🚀
Moderated by @amishjani at the 2026 FirstMark Guilds Summit.
The rain may have taken the rooftop and the view, but the vibes are better than ever at the annual MAD (Machine Learning, AI, and Data) Summer Party!
Huge thank you to our friends at @datadoghq for co-hosting with us this year 💜
Congratulations to @vendelux on raising a $50M Series B, led by our friends at @tribecavp!
We are thrilled to continue our participation after leading the Series A in 2023 🚀
Vendelux helps GTM teams identify the right events, find the right buyers, and turn B2B events into a measurable growth channel.
Today, the company tracks 250,000+ global B2B events and supports programs influencing billions of dollars in event spend.
Proud to keep backing Alex, Stefan, and the @vendelux team as they build the infrastructure for the next era of B2B events.
AI has rewritten the attacker playbook.
The gap between amateur hackers and nation-states is collapsing. The most dangerous attacks now look routine: stolen credentials, valid tokens, normal-looking sessions.
That’s why we’re thrilled to announce FirstMark’s investment in @nebulocksec, led by @DavidWaltcher.
We’re excited to partner with Founder @abcbyDamien and the entire Nebulock team as they build the foundational security analytics stack.
Join the hunt 🎯
@amishjani kicking off Guilds Summit -> 500 of the world’s best operators gathered in NYC to meet, share, and learn how each other are building generational companies 🔥
Thank you @KPMG @SiliconVlyBank @airwallex @HiBob_HR @Fidelity @tryramp and @okta for the support!
Guilds Summit.
Where the best share how they build.
June 16.
NYC 🗽
@oliveur @anjsud @katieburkie @lilscotboy @jon_hyman @ElyKahn @EnoReyes @ivanburazin @gcmarker @davidneckstein