Jeffrey A. Dorsey

Wellington Management Co. LLP (WMC) is a registered investment advisor and mutual fund manager headquartered in Boston, Massachusetts. The firm was founded in 1928 and is a subsidiary of Wellington Investment Advisors Holdings LLP, ultimately held by Wellington Management Group LLP. WMC offers investment management services for a fee to separate account clients and mutual funds sponsored by unaffiliated parties, as well as to investment vehicles that the firm sponsors.

Fidelity Management & Research Co. (FMR) is a SEC-registered investment advisor headquartered in Boston, Massachusetts. The firm was founded in 1946 and is a subsidiary of FMR LLC, also known as Fidelity Investments. FMR provides investment supervisory services, which include sub-advisory services, to Fidelity's family of mutual funds and exchange-traded funds, qualified tuition programs, privately offered unregistered investment funds, separately managed account clients, and various other institutional accounts.

Aetna, Inc. engages in the provision of traditional, voluntary, and consumer-directed health insurance products and related services. It offers benefits, products and services to individuals, employers, healthcare professionals, and producers. The company was founded by Eliphalet Adams Bulkeley in 1853 and is headquartered in Hartford, CT.

Adage Capital Management LP (Adage) is a SEC-registered investment advisor and hedge fund manager headquartered in Boston, Massachusetts. The firm was founded by Phil Gross and Robert Atchinson in 2001 and is owned by Adage Capital Partners GP LLC. Adage provides investment advisory services to its sole client, Adage Capital Partners LP (ACP), a private investment fund. The firm does not manage any separate accounts.