Jonathan Grayer

Weld North LLC (Weld North) is a private equity subsidiary of Weld North Holdings LLC founded in 2010 by Jonathan N. Grayer. The firm is headquartered in Stamford, Connecticut.

Weld North Holdings LLC operates as an education investment company. It engages in the development of educational software solutions. The firm focuses on education, health, wellness, consumer services, and marketing businesses. The company is headquartered in Greenwich, CT.

The Learning House, Inc. designs and develops online education programs and courses. Its services include product development, market research, marketing and lead generation, admissions and enrollment management, student retention, curriculum development and management, faculty training, professional development, learning management systems and technical support. The company was founded by Denzil Edge and Sharon M. Edge in 2001 and is headquartered in Louisville, KY.

Imagine Learning LLC operates as a digital education technology company. It focuses on developing digital curriculum and tools for pre-K?12 students. The company was founded in 2010 and is headquartered in New York, NY.

Memorial Sloan-Kettering Cancer Center (Investment Management) (MSK-IM) is the investment management division of Memorial Sloan-Kettering Cancer Center, a non-profit organization headquartered in New York City. The firm was formed in 1960 to coordinate and guide the overall policy for Memorial Hospital and the Sloan Kettering Institute, and in 1980 these entities were unified into a single institution, with a single president and CEO. MSK-IM manages the investment portfolio of MSK.

Founded in 2008, Twig Rights Ltd. operates as a holding British company with subsidiaries that create multimedia content. Part of Imagine Learning LLC (Arizona), the private company is based in London, UK. Twig Rights was acquired by Imagine Learning LLC (Arizona) on July 15, 2021.

Memorial Sloan-Kettering Cancer Center operates as a private cancer center. It offers cancer care services to adult; and child and teen patients. Its services include risk assessment and screening; diagnosis and treatment; clinical trials; patient and caregiver education; and pediatric clinical trials. The company was founded by John J. Astor and Charlotte Astor in 1884 and is headquartered in New York, NY.

Kaplan, Inc. provides educational and professional training services. It offers higher education, professional training, test preparation, services for K12 schools, and after school learning programs. The firm offers services in four major areas: Kaplan Kids and Schools, Kaplan Test Prep and Admissions, Kaplan Higher Education, and Kaplan Professional. The company was founded by Stanley H. Kaplan in 1938 and is headquartered in Alpharetta, GA.

Newsweek, Inc. publishes newspapers and magazines. It provides coverage of national and international affairs, business, society, science & technology, arts and entertainment. The company was founded in February, 1933 by Thomas J.C. Martyn and is headquartered in New York, NY.