Jack Altman is a venture capitalist who founded Lattice and Alt Capital. He joined Benchmark as a general partner in 2026 after raising two funds for his previous firm.
What Jack can write
Benchmark writes $3M to $30M+ checks, larger than 93% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: Benchmark.Career
- Lattice · Founder
- Alt Capital · Founder2024-2026
- Benchmark · General PartnerNow
Companies founded
Investments named in public bios
Focus
Also at Benchmark
Partners like Jack
At firms with a similar stage, sector and check size.
Alert me when Benchmark is active
One email when Jack's firm raises a fund, adds a partner or shows new activity.
Send Mode VC your deck
Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
Send your deckQuestions
Who is Jack Altman?
Jack Altman is a venture capitalist who founded Lattice and Alt Capital. He joined Benchmark as a general partner in 2026 after raising two funds for his previous firm.
How much does Jack Altman invest?
Jack Altman invests through Benchmark, which writes checks of $3M to $30M+ at seed, series a.
How do I pitch Jack Altman?
A warm intro from a founder Benchmark backed works best.
What did Jack Altman do before Benchmark?
Founder at Lattice; Founder at Alt Capital.
Last updated 2026-10-15. Is this you? Ask for a correction.