We empower the early-stage ecosystem

with education & research for early-stage investors, entrepreneurs, and community builders



The Angel Resource Institute (ARI) was founded in 2005 as part of the evolution of earlier efforts to encourage and support angel investing by the Ewing Marion Kauffman Foundation and leaders of angel groups across the United States.


Originally named the Angel Capital Education Foundation (ACEF), our organization initially focused on providing education, training, and information on best practices in the field of angel investing. Our first education programs were originally developed under the Power of Angel Investing brand by the Kauffman Foundation. Over the years, ARI has added additional programs to the PAI curriculum and we are a leading education organization for entrepreneurs, early-stage investors and ecosystem builders. Check out the list of ARI programs and workshops.


In order to validate best practices and bolster our training programs, we developed a number of initiatives to support market surveys and encourage academic research on angel, seed-stage, and early-stage investing. Our research efforts include papers on a wide range of topics related to angel investing along with the HALO Report™, a comprehensive database of angel investment activity covering the entire United States. Check out the various ARI research reports.


More recently ARI has recognized that the collaboration between angels and entrepreneurs is as valuable as the funding investors provide. We are expanding our mission to encompass a wide range of post-investment activities including governance and mentoring, along with exit strategies that recognize return on capital for investors and wealth-creation for entrepreneurs.

Our Name

In recognition of our expanded mission and growing program base, ACEF changed its name to the Angel Resource Institute in 2011. ARI is a known brand that has delivered more than 400 workshops and seminars worldwide.

Support and Donations

ARI is a non-profit charitable organization as defined in Section 501(c)(3) of the internal Revenue Code. To inquire about how you can support ARI and its programs, please contact us. ARI relies on fees generated from delivering educational workshops. ARI appreciates any donations to help support continued research efforts that are utilized in best-practice training and education workbooks. Please consider making a tax-deductible donation.

Leadership & Board of Trustees

The ARI Board of Trustees includes leading angel investors, educators, and researchers from across the United States, Canada, Australia, and Mexico. Review the list of ARI board members and lead instructors. If you plan on hosting a future ARI workshop, you may choose from any one of our talented, and certified, instructors.

Partners & Sponsors

ARI partners and works with thought leaders throughout the entrepreneurial and investor ecosystem, including Nasdaq, the Kauffman Foundation, Pitchbook, Venture Well, the Open Hands Initiative, economic developers, and innovative corporate partners around the world.


A select group of individuals have been named ARI Fellows in recognition of their significant contributions to the angel investing community and the advancement of the mission of the Angel Resource Institute. This list includes John May, Bill Payne, and Basil Peters.


Discover ARI programs

ARI has multiple courses designed for beginners to expert-level investors and entrepreneurs. Each course is ARI instructor led or ARI can train you to deliver courses.

Request a workshop proposal

ARI has delivered more than 400 courses across 38 states and 40 countries for angel groups, economic development organizations, and government initiatives to encourage early-stage investments and deal flow.


Join ARI's data collection initiative

ARI is continuously collecting data from Angel investors, groups, and entrepreneurs on early-stage and startup deals in order to provide better metrics.

View latest Halo Report

View the latest Halo Report and find out what trends will impact your current and future funding rounds.


ARI collaboration partners include:


Sue Preston, Angel Resource Institute, explains a new ARI program designed to educate women entrepreneurs and investors.

Books by ARI Lead Instructors and Others