Walter Kortschak
Walter Kortschak, founder @Firestreakvc, senior advisor @SummitPartners at SignalFire, posted 5 times in the last 90 days, mostly industry thought leadership posts. That is about 0.4 posts a week; the most recent went up on Oct 14, 2026. Most of those were text-only posts (80%), with videos at 20%. By post type, industry thought leadership posts lead at 67%, then company announcements at 33%. Everything in that window was an original post, no reshares. SignalFire has 18 other people in the benchmark, including Elaine Zelby, Monica Zent and Sadasia McCutchen.
What format they post
Also posting at SignalFire
- Elaine ZelbyCo-Founder @ Tofu - Make paid ads a pipegen channel36 posts
- Monica ZentCEO & Founder | LegalTech Investor & VC Advisor | AI Law & Policy Expert | LegalTech + RegTech Inventor | Pioneer in ALSP & Enterprise Legal Innovation + Legal Ops | Enterprise GTM & Scale Strategy36 posts
- Sadasia McCutchenHead of Ecosystem @ SignalFire | Startup Partnerships & GTM Strategy | Board Member & Advisor | Community-Driven Growth24 posts
Post counts are the public LinkedIn posts Imagine AI collects for this person, taken over the 90 days to Oct 14, 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.
