Edgar Johnson
Edgar Johnson, Principal at Coalfire at Coalfire, posted 3 times in the last 90 days. That is about 0.2 posts a week; the most recent went up on Oct 8, 2026. All of them were text-only posts. Everything in that window was an original post, no reshares. Coalfire has 25 other people in the benchmark, including Brandon Keesecker I CCSK, AWS CCP, Brad Little and Holly Waltemyer.
What format they post
Also posting at Coalfire
Post counts are the public LinkedIn posts Imagine AI collects for this person, taken over the 90 days to Oct 8, 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.