Albert Chang

TD Asset Management, Inc. (TDAM) is a Canadian investment management firm headquartered in Toronto, Ontario. The firm is a subsidiary of the Toronto-Dominion Bank (NYSE: TD), a Canadian chartered bank regulated by the Office of the Superintendent of Financial Institutions. Founded in 1987, TDAM provides discretionary investment management services to corporations, investment companies, pension funds/plans, endowments and foundations.

Palo Alto Investors LLC (PAI) is a registered investment advisor and hedge fund manager headquartered in Palo Alto, California. The firm was founded by William L. Edwards in 1989 as Palo Alto Investors LLC and converted into a California limited partnership in 2018. They are a subsidiary of PAI LLC. PAI serves as the investment adviser to private pooled investment vehicles, the securities of which are offered to investors on a private placement basis.