Tim Guleri
Managing Director at Sierra Ventures
San Francisco Bay Area
Writes $500K – $15M checks · typically $7.8M
About
Tim Guleri is a former serial entrepreneur who took Scopus public and sold Octane for $3.2B, giving founders credibility; he devised a five-layer AI framework and tests generative AI nights/weekends.
Tim Guleri @timguleri
Check out my latest article: Venture Value Compounding is Rooted in Relationships and Execution https://t.co/EvevD1DNwd via @LinkedIn
Feb 25, 2026 · ♥ 1
Tim Guleri @timguleri
can we import Mark Carney PM of Canada to come and run the US. I'm listening to him Davos speech. This is what leadership looks like..
Jan 21, 2026 · ♥ 3
Tim Guleri @timguleri
Let’s GOOOOOOOOO! https://t.co/ELvBYAULxJ
Sep 12, 2023 · ♥ 6 · ⇄ 1
Invests in
AI & Machine LearningDeep TechDefense TechDeveloper ToolsEnergyEnterprise SoftwareHardwareNew MaterialsRoboticsSaaSSpace Tech
Deals · 7
Approximate Labs Inc.Board seat
via Sierra Ventures · filed Mar 2023 · $5.3M raise
Commerce FabricBoard seat
via Sierra Ventures · filed Aug 2022 · $140M raise
Polymer SearchBoard seat
via Sierra Ventures · filed Sep 2021 · $6.1M raise
Balto SoftwareBoard seat
via Sierra Ventures · filed Oct 2020 · $10M raise
Phenom PeopleBoard seat
via Sierra Ventures · filed Jan 2016 · $9.4M raise
AppceleratorBoard seat
via Sierra Ventures · filed Aug 2015 · $10M raise
Treasure DataBoard seat
via Sierra Ventures · filed Jan 2015 · $15M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Sierra Ventures
Network4
Investors connected to Tim in public investor directories — a warm-intro map.