Jack Altman
Jack Altman, General Partner at Benchmark at Benchmark, posted 2 times in the last 90 days. That is about 0.2 posts a week; the most recent went up on Sep 15, 2026. All of them were text-only posts. Everything in that window was an original post, no reshares. Benchmark has 4 other people in the benchmark, including Chetan Puttagunta, Everett "Ev" Randle and Rachel Park.
What format they post
Also posting at Benchmark
Post counts are the public LinkedIn posts Imagine AI collects for this person, taken over the 90 days to Sep 15, 2026; reshares are left out of the post count and the format mix. Follower counts come from the last profile check. The band compares a typical post, the geometric mean of reactions on posts that have had two weeks to settle, with the Imagine AI research baseline of 20,000+ posts from B2B startups. How the benchmark is built.