Aeisha Mastagni

Aeisha Mastagni is the senior portfolio manager in the Sustainable Investment and Stewardship Strategies unit of the California State Teachers’ Retirement System, the largest educator-only pension fund in the world. She is responsible for working with a dedicated team to further CalSTRS’ mission of securing the financial future and sustaining the trust of California’s educators.


Aeisha is part of the team that oversees the Sustainable Investment Portfolio and leads CalSTRS’ stewardship efforts, which includes proxy voting, corporate engagement and working with regulatory authorities on market-wide issues.


During her time at CalSTRS, Aeisha has become a prolific media spokesperson and participates in interviews concerning environmental, social and governance topics, including proxy voting, executive compensation and corporate climate disclosures. She speaks with both notable mainstream and pension industry outlets, including The Wall Street Journal, Financial Times, Bloomberg, Reuters and Pensions & Investments.


In 2012, Aeisha joined the board of directors at Golden 1 Credit Union, one of the nation’s largest credit unions with more than $14 billion in assets and one million members. In 2015, she joined the board of the Council of Institutional Investors, whose mission is to be the leading voice for effective corporate governance, and in 2023, she was elected chair of the CII board.


Before joining CalSTRS, Aeisha worked in the Corporate Governance unit of the California Public Employees’ Retirement System for six years, overseeing the proxy voting program and the corporate governance manager portfolio. Prior to CalPERS, she worked in Operations at Salomon Smith Barney before moving to Morgan Stanley as a financial advisor and assistant operations manager. Aeisha has a bachelor’s degree in economics from California State University, Sacramento.

Aeisha Mastagni

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Aeisha Mastagni

Will Farrell

Federated Hermes
Assistant Manager, EOS
London

Will co-leads the climate change theme at EOS, the stewardship arm of Federated Hermes Limited, where his coverage includes companies in Europe and Australia, primarily financial services, energy, chemicals, and materials. Prior to joining EOS, Will worked in the energy and infrastructure investment banking team at Macquarie Capital, where he specialised in renewable energy. Before that, Will held a number of roles across the UK climate policy space, including as a parliamentary researcher for Rt. Hon. Chris Skidmore MP on climate and energy issues, and as a climate and economic policy analyst at a diplomatic institute. He was appointed as a voluntary adviser to Rt. Hon. Alok Sharma MP, President of COP26, on preparations for COP26 after co-founding a Westminster climate policy group in 2019, which engaged MPs and Members of the House of Lords to advocate for more ambition on climate action in public policy. Will has a Bachelor’s degree (1st Class Honours) in Economics from the London School of Economics and Political Science.