Mark Selcow
Mark Selcow, General Partner at Costanoa Ventures | Two-time Founder | Venture Investor | Enterprise Technology | Fintech | Vertical SaaS | Leadership | Operations at Costanoa Ventures, posted 5 times in the last 90 days, mostly company announcements. That is about 0.4 posts a week; the most recent went up on Sep 24, 2026. All of them were text-only posts. By post type, company announcements lead at 75%, then hiring announcements at 25%. Everything in that window was an original post, no reshares. Against the Imagine AI research baseline of 20,000+ LinkedIn posts, Mark Selcow's typical post lands below the baseline median and bottom quarter in Venture Capital. Costanoa Ventures has 11 other people in the benchmark, including Greg Sands, Joe Sullivan and Jim Wilson.
What format they post
Also posting at Costanoa Ventures
- Greg SandsFounder & Managing Partner at Costanoa Ventures | Leading Seed & Series A16 posts
- Joe SullivanCEO of Joe Sullivan Security LLC, Venture Partner at Costanoa Ventures, Board Director, Former Chief Security Officer (@ Cloudflare, Meta, Uber) & Former Federal Prosecutor15 posts
- Jim WilsonPartner at Costanoa Ventures | Board Member and Advisor | Founder Sales | Enterprise Sales | GTM Strategy | International Operations5 posts
Post counts are the public LinkedIn posts Imagine AI collects for this person, taken over the 90 days to Sep 24, 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.
How to move up
- At Mark Selcow's typical post, 2 more original posts a week, every week, would move Mark Selcow from #1,773 to about #729.
- Posting every week at today's cadence alone would put Mark Selcow at about #1,265.
