Sybil Grieb
InvestorPrincipal at Pitbull Ventures
Los Angeles, California
Writes $100K – $5M checks · typically $1.5M
About
Sybil Grieb brings over 20 years of experience in business development, strategy, and operations across roles as founder, department head, and individual contributor. Her background includes positions at Whalar, Edelman, Crunchyroll, Xfire, and ZAM Network, where she worked on revenue growth and account management. She currently serves on the Associates Board at 826LA, a nonprofit organization offering tutoring, creative writing workshops, and publishing programs for underserved students.
Experience
- 826LAAssociates Boardcurrent2026 — present
- Career Breakcurrent2025 — presentLos Angeles, California
- WhalarSVP Business Development2022 — 2025Los Angeles, California, United States
- 100HatsCEO2019 — 2022Los Angeles
- EdelmanSVP, Head of Influencer Marketing2017 — 2019Greater Los Angeles Area
- William Morris EndeavorHead of Digital Influencer and Brand Integrations2015 — 2017Beverly Hills, CA
- CrunchyrollHead of Digital Advertising Sales2013 — 2015San Francisco Bay Area
- XfireVP of Digital Advertising Sales & Ad Operations2012 — 2013Greater Los Angeles Area
- Affinity Media - ZAM Network (Acquired by TenCent)Head of Business Development, Ad Sales & Ad Operations2005 — 2010Los Angeles, California
Education
- New York UniversityTisch School of the Arts
- Mandarin, ShanghaiHSK Level 2
- San Francisco State UniversityB.A., English
Skills & more
Brand PartnershipsMarketing Strategy1Business Strategy2Digital MarketingInfluencer MarketingOnline Advertising54Online Marketing16Strategic Partnerships47Generating Revenue2Monetization18Video Games14Competitive Analysis7
+12 more
Online GamingAdvertisingDigital MediaDigital StrategyAd ServingAdvertising SalesBusiness DevelopmentStart-upsStrategic PlanningCRMMobile DevicesMobile AdvertisingFrom Sybil's professional profile.
Colleagues at Pitbull Ventures
Network1
Investors connected to Sybil in public investor directories — a warm-intro map.
Frequently asked questions
- Where does Sybil Grieb work?
- Sybil Grieb is Principal at Pitbull Ventures.
- What check size does Sybil Grieb write?
- Sybil Grieb typically writes checks of $100K – $5M.
Same school
Also attended New York University356
Gabriella GiglioHR & Executive Talent at General CatalystAndrea EchstenkamperVP of Marketing at HeavybitRami BranitzkyPartner at Sapphire VenturesZach WhiteInvestment Team at 8VCAnkita TiwariPrograms Manager at StartXUri LopatinInvestor at Khosla Ventures
+ 350 more
Also attended San Francisco State University66
Ciara Campbell BowenExecutive Assistant at Sapphire VenturesJulie WalkerInvestor at True VenturesEmily RabbittInvestor at True VenturesStephanie WatkinsOperations at 8VCIndra HusfeldOffice and Finance Coordinator at Sierra VenturesCrystal TownsendManager at Buckhill Capital
+ 60 more
Shared employers
Also worked at Edelman28
Tiffany SpencerHead of Marketing at Menlo VenturesDorothy ChangVenture Partner at Flybridge Capital PartnersZeynep SenerOperations & Investment | Simya VC at 212Gavin MathisPartner & Chief of Staff at Prime Movers LabShwen GweeDigital Pharma Advisor at Excelerate Health VenturesAmanda BellVP of Public Relations at XRC
+ 22 more
Also worked at William Morris Endeavor15
Nick PenskeInvestment Team at 8VCWill WardFounder & Managing Partner at Fourward VenturesBen CurtisAdvisor at Red Sea VenturesCharles KingGeneral Partner at MaC Venture CapitalSeth RosenbergPartner at Greylock PartnersSterling CampbellInvestor at Blockchain Capital
+ 9 more
Also worked at Crunchyroll8
AndrewInvestor at Exceptional CapitalGianfranco CordaraSenior Advisor (VP of Global Operations Disney+) at Grishin RoboticsVarun SharmaPrincipal at Haveli InvestmentsJames LinFounder at CSPABenjamin South LeeCo-founder, CEO (Acq. by Avara Labs) at SonarAbbas JafferyFounder at Omoi (formerly Azuki)
+ 2 more
Also worked at Xfire8
Stewart AlsopInvestor at Alsop Louie PartnersAdam BoydenManaging Director at Rpm Ventures Iii Management, L.L.C.Hany NadaCo-Founder and Partner at ACME CapitalKristin McDonnellManaging Partner & Founder at Menlo GroupMichael SteuerPresident & CTO at Casper LabsRoderick ChiaVenture Partner at Raw Ventures
+ 2 more