John Guerin

Wesco Financial Corp. provides business insurance, equipment rental and leasing services. The company was founded on March 19, 1959 and is headquartered in Pasadena, CA.

Berkshire Hathaway, Inc. (Investment Management) (BHI-IM) is the asset management division of Berkshire Hathaway, Inc. (NYSE: BRK), an American multi-national conglomerate headquartered in Omaha, Nebraska. The firm was founded in 1955 and traces its roots to Valley Falls Company, a textile manufacturing company that was formed in 1839. In 1962, Warren Buffett started to acquire shares of the company until he had majority ownership of it. Berkshire Hathaway engages in insurance businesses conducted on both a primary basis and a reinsurance basis.

Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA.

Part of Warner Bros. The company is based in Burbank, CA. Discovery, Inc., Warner Bros. Pictures International is a company that is home to Warner Bros. movies, TV shows, and video games, including Harry Potter, DC Comics, and more.

Pixar, Inc. produces digital animation motion pictures. The firms animation studios combine creative and technical artistry to create original stories in the medium of computer animation. Its computer animation studio creates a new generation of animated feature films, merchandise and other related products. The company was founded by Edwin E. Catmull on February 3, 1986 and is headquartered in Emeryville, CA.

Part of Daily Journal Corp., Journal Technologies, Inc. is a software solutions company based in Los Angeles, CA. The company provides technology solutions for courts and justice systems, including appellate, superior, municipal, traffic, probate and drug courts, state, county and city prosecutors, public defense attorney offices, and probation, parole, court services, pretrial and diversion offices. The company's mission is to create technology that seamlessly integrates into daily workflows, allowing busy people to focus on their mandates. Danny Hemnani has been the CEO of the company since 2022.

California Institute of Technology provides education focusing on science, engineering, academia, business, and public service. The company was founded in 1891 and it is headquartered in Pasadena, CA.

Glenair, Inc. produces electrical connector accessories. The company products include cylindrical connectors, swing-arm shield sock backshells, ruggedized electrical power and signal connectors, shielded cable assemblies, fiber optic connectors, commercial connectors, and interconnect cable assemblies. The company was founded in 1956 and is headquartered in Glendale, CA.

ADRx, Inc. is a biopharmaceutical company. The firm advances drug candidates for Alzhiemer’s disease, systemic amyloidosis and ovarian cancer. The company was founded by Gary Wilcox and David Eisenberg and is headquartered in Thousand Oaks, CA.

CytomX Therapeutics Holdings LLC engaged in the development of new generation targeted antibody therapeutics. The company was founded by Frederick W. Gluck on January 31, 2008 and is headquartered in Santa Barbara, CA.

Cocrystal Discovery, Inc. operates as a biotechnology company developing antiviral therapeutics for human diseases. It works on Hepatitis C virus, Influenza virus, and Rhinovirus (common cold). The company was founded by Gary L. Wilcox, Sam Lee and Roger David Kornberg in 2008 and is headquartered in Bothell, WA.

International Genetic Engineering, Inc. provides engineering services. The private company is based in Santa Monica, CA. The company was founded by Gary L. Wilcox.

ICOS Corp. manufactures medications to treat inflammation and other serious diseases. It focuses on the development of treatments for unmet medical conditions such as prostatic hyperplasia, hypertension, pulmonary arterial hypertension, cancer, and inflammatory diseases. The company was founded in 1989 by Christopher Henney and George Rathman and is headquartered in Bothell, WA.

Munger, Tolles & Olson LLP provides legal services. Its services include corporate finance, mergers and acquisitions, securities, corporate law, antitrust, intellectual property, real estate, labor and employment, and taxation. The company was founded by Charles Munger in 1962 and is headquartered in Los Angeles, CA.

Berkshire Hathaway Assurance Corp. offers municipal and state bonds. The company was established in December, 2007 and is headquartered in Omaha, NE.

Good Samaritan Hospital (Los Angeles) provides health care services. It offers cardiac surgery, diagnostic imaging, oncology & respiratory care and women's health services. The hospital also operates cardiac, orthopedic care, prenatal medicine, neuroscience and tertiary retinal surgery centers. Good Samaritan Hospital was founded in 1885 by Sister Mary Wood and is headquartered in Los Angeles, CA

Blue Chip Stamps, Inc. engages in the production and distribution of trading stamps. It offers stamps that can be redeemed at selected retailers for merchandise. The company is headquartered in Pasadena, CA.