Brian Stuart Shipman

UBS Securities LLC is an investment bank and registered broker/dealer headquartered in New York City. The firm was founded in 1998 as UBS Warburg LLC. They are a subsidiary of UBS Americas Holding LLC, ultimately held by UBS Group AG (SWX: UBSG, NYSE: UBS) in Switzerland. UBS Securities is a primary dealer in US Government securities and provides a full range of investment banking services which includes corporate finance, mergers and acquisitions, capital markets, trading and sales, fixed-income, equity research, private banking, underwriting and prime brokerage operations. The firm also provides advisory services and access to capital markets for corporate, institutional, intermediary and alternative asset management clients.

RS Investment Management Co. LLC (also known as RS Investments) is an investment advisor and mutual fund manager headquartered in San Francisco, California. Founded in 1986, the firm was acquired by Victory Capital Management, Inc. from The Guardian Life Insurance Co. of America in July 2016. They operate as an independent franchise within Victory Capital's multi-boutique model. Each of the teams within the RS franchise continues to operate autonomously. RS Investments provides investment advisory services to mutual funds, institutions, private pooled investment vehicles, and high net-worth individuals.

Jefferies LLC is a global investment bank and institutional securities firm headquartered in New York City. The firm was founded in 1962 and is a subsidiary of Jefferies Group LLC, ultimately held by Jefferies Financial Group, Inc. (NYSE: JEF). Jefferies provides corporate clients with research and execution services in equity, fixed income, and foreign exchange markets, as well as a full range of investment banking services such as underwriting, mergers and acquisitions, restructuring and recapitalization, and other advisory services, with all businesses operating in the Americas, Europe and Asia.

Houghton Mifflin Harcourt Co. engages in the provision of pre-K-12 education solutions, delivering content, technology, services, and media. It operates through the following segments: Education and HMH Books & Media. The Education segment provides educational products, technology platforms and services. The HMH Books & Media segment primarily develops, markets and sells consumer books in print and digital formats and licenses book rights to other publishers and electronic businesses. The company was founded in 1832 and is headquartered in Boston, MA.

Houghton Mifflin Harcourt Publishing Co. is a learning company, which engages in instructional curriculum, assessment, technology, and professional learning. The company was founded in 1832 by William Ticknor and James Fields and is headquartered in Boston, MA.