Alex Stamos

Private Equity Investor at

Felicis Ventures Management Co. LLC

Technology Services

Consumer Services

Miscellaneous

Profile

Alex Stamos is the founder of iSEC Partners, Inc., founded in 2004, serving as Partner from 2004 to 2012.
Mr. Stamos was the founder of Krebs Stamos Group LLC, founded in 2021, serving as Partner from 2021 to 2023.
Mr. Stamos currently holds the positions of Member at Council on Foreign Relations, Inc. and Venture Partner at Felicis Ventures Management Co. LLC.
Former positions include Chief Information Security Officer at Yahoo!, Inc. from 2014 to 2015, Chief Information Security Officer at Meta Platforms, Inc. from 2015 to 2018, and Chief Information Security Officer at SentinelOne, Inc. from 2024 to 2025.
Education includes an undergraduate degree from the University of California, Berkeley, conferred in 2001.

Alex Stamos active positions

Companies	Position	Start
Felicis Ventures Management Co. LLC Felicis Ventures Management Co. LLC Investment ManagersFinance Felicis Ventures invests in companies located across the globe. The firm targets companies in the fields of artificial intelligence, cybersecurity & defense, global resilience & energy and health & bio. It provides financing for seed, early and growth stage capital requirements. The firm acts as a lead investor.	Private Equity Investor	-
Council on Foreign Relations, Inc. Council on Foreign Relations, Inc. Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment	Corporate Officer/Principal	-

All active positions of Alex Stamos

Former positions of Alex Stamos

Companies	Position	End
SENTINELONE, INC.	Corporate Officer/Principal	01/08/2025
Krebs Stamos Group LLC Krebs Stamos Group LLC Information Technology ServicesTechnology Services Provides computer and network security services	Founder	01/11/2023
META PLATFORMS, INC.	Corporate Officer/Principal	01/08/2018
Yahoo!, Inc. Yahoo!, Inc. Internet Software/ServicesTechnology Services Operates as a digital media company that delivers personalized digital content and experiences across devices	Corporate Officer/Principal	29/06/2015
iSEC Partners, Inc. iSEC Partners, Inc. Miscellaneous Commercial ServicesCommercial Services Provides security consulting services	Founder	02/03/2012

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Linked companies

Private companies	8
Yahoo!, Inc. Yahoo!, Inc. Internet Software/ServicesTechnology Services Operates as a digital media company that delivers personalized digital content and experiences across devices	Technology Services
Meta Platforms, Inc. Meta Platforms, Inc. Internet Software/ServicesTechnology Services Operates as a social networking service and website	Technology Services
SentinelOne, Inc. SentinelOne, Inc. Packaged SoftwareTechnology Services Develops AI based cybersecurity platform	Technology Services
University of California, Berkeley University of California, Berkeley Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Council on Foreign Relations, Inc. Council on Foreign Relations, Inc. Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment	Miscellaneous
Felicis Ventures Management Co. LLC Felicis Ventures Management Co. LLC Investment ManagersFinance Felicis Ventures invests in companies located across the globe. The firm targets companies in the fields of artificial intelligence, cybersecurity & defense, global resilience & energy and health & bio. It provides financing for seed, early and growth stage capital requirements. The firm acts as a lead investor.	Finance
iSEC Partners, Inc. iSEC Partners, Inc. Miscellaneous Commercial ServicesCommercial Services Provides security consulting services	Commercial Services
Krebs Stamos Group LLC Krebs Stamos Group LLC Information Technology ServicesTechnology Services Provides computer and network security services	Technology Services