Sybil Grieb
InvestorPrincipal at Pitbull Ventures
Los Angeles, California
Writes $100K – $5M checks · typically $1.5M
Find your path to Sybil
201 people in our graph share verified history with Sybil — schools, employers, funds. One of them is your warm intro.
Dana ChamorrounlockedSybil: together at San Francisco State University
×7Sybil: together at San Francisco State University
×3Sybil: together at Edelman
Sybil: together at Xfire
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
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
- Who is Sybil Grieb?
- 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.
- 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.
- Where did Sybil Grieb go to school?
- Sybil Grieb studied at New York University (Tisch School of the Arts); Mandarin, Shanghai (HSK Level 2); San Francisco State University (B.A., English).
Same school
Also attended New York University615
Jonathan RossFounder of Groq; inventor of Google's TPU — now at NvidiaGabriella GiglioHR & Executive Talent at General CatalystAndrea EchstenkamperVP of Marketing at HeavybitRami BranitzkyPartner at Sapphire VenturesZach WhiteInvestment Team at 8VCAnkita TiwariPrograms Manager at StartX
+ 609 more
Also attended San Francisco State University130
Dana ChamorroVice President, Technology at Redpoint VenturesCiara Campbell BowenExecutive Assistant at Sapphire VenturesJulie WalkerInvestor at True VenturesEmily RabbittInvestor at True VenturesStephanie WatkinsOperations at 8VCIndra HusfeldOffice and Finance Coordinator at Sierra Ventures
+ 124 more
Shared employers
Also worked at Whalar1
Also worked at Edelman44
Dorothy ChangVenture Partner at Flybridge Capital PartnersBen ZabelInvestor at Notable CapitalScott DonohueSenior Director, Market Access at Deerfield Management CompanyZeynep SenerOperations & Investment | Simya VC at 212Gavin MathisPartner & Chief of Staff at Prime Movers LabShwen GweeDigital Pharma Advisor at Excelerate Health Ventures
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+ 38 more
Also worked at William Morris Endeavor17
Nick PenskeInvestment Team at 8VCWill WardFounder & Managing Partner at Fourward VenturesBen CurtisAdvisor at Red Sea VenturesCharles D. KingGeneral Partner at MaC Venture CapitalSeth RosenbergPartner at Greylock PartnersRyan ShermanSenior Manager - Digital Performance and Marketing at BGH Capital
+ 11 more
