Aeisha Mastagni

United States
CalSTRS, California State Teachers' Retirement System
Job Title:
Portfolio Manager
Areas of Expertise:
  • Business ethics
  • Shareholder responsibilities
  • Shareholder rights


Aeisha Mastagni is a Portfolio Manager within the Sustainable Investment & Stewardship Strategies Unit of the California State Teachers’ Retirement System (CalSTRS), the nation’s largest teacher retirement fund.  She is responsible for working with a dedicated team to further CalSTRS’ mission to secure the financial future and sustain the trust of California’s educators. 




Aeisha’s main areas of focus are the portfolio engagement program, executive compensation, selecting and monitoring managers in the activist manager portfolio, and working with regulatory authorities on market-wide issues. 




In 2012, Aeisha joined the Board of Directors at the Golden 1 Credit Union, one of the nation’s largest credit unions with more than $11 billion in assets and 1,000,000 members.  In 2015, she joined the Board of Directors for the Council of Institutional Investors, whose mission is to be the leading voice for effective corporate governance practices and shareholder rights. 




Before joining CalSTRS, Aeisha worked in the Corporate Governance Unit of the California Public Employees Retirement System (CalPERS) for six years overseeing the proxy voting program and the corporate governance manager portfolio.  Prior to CalPERS, she worked in the Operations Department of Salomon Smith Barney before moving to Morgan Stanley as a Financial Advisor and Assistant Operations Manager.  Aeisha has a Bachelor of Science degree in Economics from the California State University, Sacramento.