Karl Siebrecht is an Angel Investor who supports founding teams at the seed, early, and acceleration stages. See sector focus, stage focus and contact routes.
About Karl Siebrecht
Karl Siebrecht is an Angel Investor who supports founding teams at the seed, early, and acceleration stages. He focuses on visionary ideas and transformational businesses, primarily in Seattle and the Bay Area, but also beyond these regions. As an active, full-stack partner, Siebrecht is dedicated to helping founders develop their companies for the long term. His investment philosophy centers on backing both the people behind the ideas and the ideas themselves, fostering enduring growth and success.
Karl Siebrecht at a glance
Role
Angel Investor
Location
Seattle, WA, United States
Investor type
Individual/Angel
Focus areas
Mr. Karl Siebrecht is a Co-Founder and serves as the Chief Executive Officer and President at Flexe. He is also a Co-Founder and Chairman of EnergySavvy. He was CEO of ad technology company AdReady. Prior to founding EnergySavvy and joining AdReady, Karl was president of Atlas at aQuantive, before its $6B acquisition by Microsoft. Prior to aQuantive, Karl was a manager at Bain & Company, and spent four years in the United States Navy as a Diving Officer. Karl earned an MBA with honors from the Amos Tuck School at Dartmouth College, and a BA in economics from Duke University. He currently serves on the Board of Directors of King FM and AdReady in Seattle.
Stages
Growth, Seed
Frequently asked about Karl Siebrecht
What does Karl Siebrecht invest in?
Karl Siebrecht (Seattle, WA, United States) — sector focus: Mr. Karl Siebrecht is a Co-Founder and serves as the Chief Executive Officer and President at Flexe. He is also a Co-Founder and Chairman of EnergySavvy. He wa…; stage focus: Growth, Seed.
How do I contact Karl Siebrecht?
Karl Siebrecht's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is Karl Siebrecht headquartered?
Karl Siebrecht is based in Seattle, WA, United States.
Every field above is read from the StartupFundraising firm directory — disclosed location, recorded investments and stated focus — and re-checked as filings arrive. Founders pair it with investors in Seattle when building a target list.
