Jack Altman Joins Benchmark as General Partner After Alt Capital's Rapid Rise

Jack Altman, founder of HR platform Lattice, has joined premier venture capital firm Benchmark as a general partner.

This move follows Altman's successful stint leading his own VC firm, Alt Capital, which raised substantial funds and backed numerous startups.

Altman's VC Journey

Alt Capital launched its $150 million Fund I in early 2024 and swiftly followed with a $274 million Fund II in September 2025, closing in just one week.

The firm invested in at least 52 companies, including notable names like Rippling, Antares Nuclear, and CompLabs.

From Lattice Founder to Investor

Prior to VC, Altman founded Lattice, a leading HR performance management platform, where he continues to serve as chair.

As the younger brother of OpenAI co-founder Sam Altman, Jack brings a prominent tech pedigree to Benchmark.

Seamless Transition to Benchmark

Altman's teammates from Alt Capital will join him at Benchmark, marking a departure from the firm's traditional flat structure of general partners only.

He will retain his board seats at companies backed during his time at Alt Capital, ensuring continuity for portfolio firms.

The future of Alt Capital remains unclear, with no details on potential portfolio acquisition by Benchmark.

On LinkedIn, Altman reflected that running Alt Capital for the past two years was "the most rewarding" period of his life, praising new ideas and mission-driven teams.

This hire signals Benchmark's evolution amid competitive VC talent wars, potentially amplifying its investments in innovative tech sectors.

Industry watchers anticipate heightened deal flow and strategic synergies from Altman's expertise in HR tech and early-stage ventures.