Jenna Birch is the founder of SISU, a marketing and communications consultancy that serves startups and venture capital firms. Established in 2023, SISU operates as an 'anti-agency,' providing fractional support in strategic communications, content, public relations, new and traditional media, research, diligence, startup support, and brand development. The SISU team is composed of subject-matter experts who aim to cultivate strategies that drive measurable business results.