Marc Hamburg
Director of Finance/CFO at BERKSHIRE HATHAWAY INC.
Network origin in Marc Hamburg first degree
| Entity | Entity type | Industry | |
|---|---|---|---|
| Public Company | Property/Casualty Insurance | 35 | |
| Subsidiary | Steel | 23 | |
| Subsidiary | Property/Casualty Insurance | 21 | |
Burlington Northern Santa Fe LLC
 Burlington Northern Santa Fe LLC RailroadsTransportation Burlington Northern Santa Fe LLC engages in the provision of freight rail transportation services. The firm operates various facilities and equipment to support transportation system, including its infrastructure and locomotives and freight cars. It also offers support facilities for rail operations include yards and terminals throughout its rail network, system locomotive shops to perform locomotive servicing and maintenance, a centralized network operations center for train dispatching, and network operations for monitoring and management. The company was founded on December 16, 1994 and is headquartered in Fort Worth, TX.
11
| Subsidiary | Railroads | 11 |
XTRA Corp.
 XTRA Corp. Finance/Rental/LeasingFinance XTRA Corp. provides transportation equipment leasing services. It is a global transportation equipment lessor with operations in the North American over-the-road and domestic intermodal markets. The company was founded on July 12, 1999 and is headquartered in St. Louis, MO.
2
| Subsidiary | Finance/Rental/Leasing | 2 |
Richline Group, Inc.
 Richline Group, Inc. Other Consumer SpecialtiesConsumer Durables Richline Group, Inc. provides integrated corporate branding, manufacturing, and distribution strategy services. The company was founded in 2007 and is headquartered in Tamarac, FL.
1
| Subsidiary | Other Consumer Specialties | 1 |
Chart of Companies connected to the second degree
Multi-company connection
Companies connected to Marc Hamburg via their personal network
| Company | Sector | Related people | Main position |
|---|---|---|---|
BNSF Railway Co.
 BNSF Railway Co. RailroadsTransportation BNSF Railway Co. provides rail transportation services. It operates railroad networks in North America. The firm transports products and commodities including the transportation of consumer goods, grain and agricultural products, low-sulfur coal, and industrial goods such as petroleum, chemicals, housing materials, food and beverages. The company was founded on September 22, 1995 and is headquartered in Fort Worth, TX. | Railroads | Director of Finance/CFO Public Communications Contact Director/Board Member Chief Executive Officer Sales & Marketing Chief Operating Officer Investor Relations Contact General Counsel | |
| Harvard Business School | College/University | Masters Business Admin Masters Business Admin Masters Business Admin Masters Business Admin Masters Business Admin Masters Business Admin | |
Alleghany Insurance Holdings LLC (Invt Port)
 Alleghany Insurance Holdings LLC (Invt Port) Investment ManagersFinance Alleghany Insurance Holdings LLC (Invt Port) (Alleghany) is the investment portfolio division of Alleghany Insurance Holdings LLC, an insurance firm headquartered in New York City. They are ultimately owned by Alleghany Corp. (NYSE: Y). Alleghany provides property and casualty reinsurance and insurance to various clients. | Investment Managers | Corporate Officer/Principal Corporate Officer/Principal General Counsel Corporate Officer/Principal Corporate Officer/Principal Corporate Officer/Principal | |
| GRAHAM HOLDINGS COMPANY | Other Consumer Services | Director/Board Member Director/Board Member Director/Board Member Director/Board Member | |
| The Leonard N Stern School of Business | College/University | Corporate Officer/Principal Masters Business Admin Masters Business Admin Masters Business Admin | |
Titanium Metals Corp.
 Titanium Metals Corp. Other Metals/MineralsNon-Energy Minerals Titanium Metals Corp. produces titanium sponge, ingot, and slab. Its activities include all phases of titanium manufacturing and sales, from converting rutile ore into sponge, to production of ingot and slab and mill products. The firm's products include titanium sponge, melted products, mill products and industrial fabrications. The company was founded in 1950 and is headquartered in Exton, PA. | Other Metals/Minerals | President Director/Board Member Director/Board Member Corporate Officer/Principal | |
| THE COCA-COLA COMPANY | Beverages: Non-Alcoholic | President Director/Board Member Director/Board Member Director/Board Member | |
PCC UK Global Holdings Ltd.
 PCC UK Global Holdings Ltd. Real Estate DevelopmentFinance Part of Berkshire Hathaway, Inc., PCC UK Global Holdings Ltd. functions as a holding private company whose subsidiaries lease real estate properties. The company is based in Birmingham, UK. | Real Estate Development | Director/Board Member Director/Board Member Director/Board Member | |
Timet UK Ltd.
 Timet UK Ltd. Metal FabricationProducer Manufacturing Founded in 1954, Timet UK Ltd. is a nonferrous metal foundry that operates as a subsidiary of Berkshire Hathaway, Inc. The private company is based in Witton, UK. | Metal Fabrication | Director/Board Member Director/Board Member Director/Board Member | |
SPS Technologies Ltd.
 SPS Technologies Ltd. Miscellaneous ManufacturingProducer Manufacturing Founded in 1935, SPS Technologies Ltd. is a precision components and fasteners manufacturer for the aerospace industry. Part of SPS International SARL, the private company is based in Leicester, UK. | Miscellaneous Manufacturing | Director/Board Member Director/Board Member Director/Board Member | |
Special Metals Wiggin Ltd.
 Special Metals Wiggin Ltd. Other Metals/MineralsNon-Energy Minerals Founded in 1835, Special Metals Wiggin Ltd. is a subsidiary of Berkshire Hathaway, Inc. that produces and supplies nickel alloys and welding products. The private company is based in Hereford, UK. | Other Metals/Minerals | Director/Board Member Director/Board Member Director/Board Member | |
| New York University | College/University | Director/Board Member Undergraduate Degree Corporate Officer/Principal | |
NYU Langone Hospitals
 NYU Langone Hospitals Hospital/Nursing ManagementHealth Services NYU Langone Hospitals provides health care services. It offers wide array of specialties, including cardiac and vascular care, cancer, inpatient and outpatient musculoskeletal care—including orthopedics, rheumatology, and rehabilitation—and a host of specialty children’s services. The company is headquartered in New York, NY. | Hospital/Nursing Management | Director/Board Member Director/Board Member Director/Board Member | |
SPS Aerostructures Ltd.
 SPS Aerostructures Ltd. Miscellaneous ManufacturingProducer Manufacturing Part of Berkshire Hathaway, Inc., SPS Aerostructures Ltd. is a British company that manufactures metal structures and parts of structures. The private company is based in Annesley, UK and was founded in 1985. | Miscellaneous Manufacturing | Director/Board Member Director/Board Member Director/Board Member | |
Berkshire Hathaway, Inc. (Investment Management)
 Berkshire Hathaway, Inc. (Investment Management) Investment ManagersFinance 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. | Investment Managers | Director of Research - Equity Chief Executive Officer Portfolio Manager-Equities | |
| AMERICAN INTERNATIONAL GROUP, INC. | Multi-Line Insurance | Comptroller/Controller/Auditor Corporate Officer/Principal Corporate Officer/Principal | |
Goldman Sachs & Co. LLC
 Goldman Sachs & Co. LLC Financial ConglomeratesFinance Goldman Sachs & Co. LLC (GS&Co.) is a securities brokerage firm headquartered in New York City. Founded in 1927, the firm is a subsidiary of The Goldman Sachs Group, Inc. (NYSE: GS). GS&Co. provides services to help hedge funds manage risk, monitor portfolios, maintain liquidity and build their businesses. They offer clients access to global equity and derivatives markets, as well as foreign exchange, commodities, European Lefts, rates and credit across the Americas, Europe and Asia. The firm proactively monitors capital markets, searching for pockets of liquidity and news that may require changes to those strategies. Integration with the Goldman Sachs network gives clients access to the firm's sectored block trades and their insights into price discovery. Their electronic trading program provides clients with tools to manage their trades from pre-trade analytics to post-trade analysis. | Financial Conglomerates | Corporate Officer/Principal Corporate Officer/Principal Corporate Officer/Principal | |
PCC Structurals, Inc.
 PCC Structurals, Inc. Aerospace & DefenseElectronic Technology Part of Berkshire Hathaway, Inc., PCC Structurals, Inc. is a world leader in structural investment castings for various applications including aerospace, power generation, military, medical, and commercial markets. PCC Structurals is based in Portland, OR and has multiple locations across the United States. The private company provides a wide portfolio of high-quality components, some as large as 100 inches (250cm), with applications in jet aircraft engines, airframes, industrial gas turbine (igt) engines, military armaments, medical prosthesis, and many other industrial markets. | Aerospace & Defense | Corporate Officer/Principal President Chief Tech/Sci/R&D Officer | |
Save The Children Federation Inc.
 Save The Children Federation Inc. Services to the Health IndustryHealth Services Save The Children Federation, Inc. operates as a nonprofit children's relief and development organization. The company was founded in 1932 and is headquartered in Fairfield, CT. | Services to the Health Industry | Director/Board Member Director/Board Member Director/Board Member | |
| University of Michigan | College/University | Undergraduate Degree Undergraduate Degree Undergraduate Degree | |
Wyman Gordon Ltd.
 Wyman Gordon Ltd. Metal FabricationProducer Manufacturing Founded in 1994, Wyman Gordon Ltd. is a subsidiary of Berkshire Hathaway, Inc. that manufactures and supplies structural forgings and forged components from titanium and nickel based alloys. The private company is based in Hereford, UK. | Metal Fabrication | Director/Board Member Director/Board Member Director/Board Member | |
Berkshire Hathaway Energy Co.
 Berkshire Hathaway Energy Co. Electric UtilitiesUtilities Berkshire Hathaway Energy Co. engages in distribution of energy. It generates energy from coal, natural gas and steam, hydroelectric, wind, geothermal, nuclear, and black liquor resources. The firm also offers residential real estate brokerage; integrated real estate, including mortgage originations and mortgage banking; title and closing; property and casualty insurance; home warranties; relocation services; and other home-related services. The company was founded in 1971 and is headquartered in Des Moines, IA. | Electric Utilities | Director/Board Member Chairman Director/Board Member | |
The American Institute of Certified Public Accountants
 The American Institute of Certified Public Accountants Miscellaneous Commercial ServicesCommercial Services The American Institute of Certified Public Accountants provides vocational education in accounting. The company provides services to the accounting community, regulatory bodies, and other organizations. It also operates in Jersey City, Washington, and Lewisville. It was founded in 1887 and is headquartered in New York City, NY. | Miscellaneous Commercial Services | Corporate Officer/Principal Corporate Officer/Principal Corporate Officer/Principal | |
Transatlantic Holdings, Inc.
 Transatlantic Holdings, Inc. Multi-Line InsuranceFinance Transatlantic Holdings, Inc. provides property and casualty reinsurance services. The company through its subsidiaries offers reinsurance capacity for a full range of property and casualty products, directly and through brokers, to insurance and reinsurance companies, in both the domestic and international markets on both a treaty and facultative basis. The firm was founded in 1986 and is headquartered in New York, NY. | Multi-Line Insurance | Director/Board Member Director/Board Member Chairman | |
| The Trustees of Columbia University in The City of New York | College/University | Graduate Degree Undergraduate Degree | |
American Museum of Natural History
 American Museum of Natural History Other Consumer ServicesConsumer Services The American Museum of Natural History is a scientific and cultural institution. Its exhibitions and scientific collections, which serve as a field guide to the people and present a panorama of the world's cultures. The company was founded by Albert Smith Bickmore, William E. Dodge, Jr., Theodore Roosevelt, Sr., Joseph Choate and J. Pierpont Morgan on April 6, 1869 and is headquartered in New York, NY. | Other Consumer Services | Director/Board Member Director/Board Member | |
| Susquehanna University | College/University | Undergraduate Degree Undergraduate Degree | |
| JPMORGAN CHASE & CO. | Major Banks | Director/Board Member Director/Board Member | |
| WALT DISNEY COMPANY (THE) | Movies/Entertainment | Director/Board Member Corporate Officer/Principal | |
| INTEL CORPORATION | Semiconductors | Director/Board Member Comptroller/Controller/Auditor | |
| MICROSOFT CORPORATION | Packaged Software | Chief Executive Officer Corporate Officer/Principal | |
American Bar Association
 American Bar Association Miscellaneous Commercial ServicesCommercial Services American Bar Association provides legal services. It provides law school accreditation, continuing legal education, legal information and other services to assist legal professionals. The firm has members which include judges, court administrators, law professors, and non-practicing attorneys. The company was founded on August 21, 1878 and is headquartered in Chicago, IL. | Miscellaneous Commercial Services | Corporate Officer/Principal Corporate Officer/Principal | |
Putnam Reinsurance Co.
 Putnam Reinsurance Co. Property/Casualty InsuranceFinance Putnam Reinsurance Co. property and casualty insurance. The company is headquartered in New York, NY. | Property/Casualty Insurance | Director/Board Member Director/Board Member | |
| University of Denver | College/University | Director/Board Member Undergraduate Degree | |
| BRIGHTVIEW HOLDINGS, INC. | Miscellaneous Commercial Services | Chief Executive Officer Human Resources Officer | |
National Indemnity Co.
 National Indemnity Co. Multi-Line InsuranceFinance National Indemnity Co. provides property and casualty insurance services. It offers insurance for commercial auto, garage, general liability, cargo, prize indemnification as well as special events. The company was founded by Jack Ringwalt and Arthur Ringwalt in 1940 and is headquartered in Omaha, NE. | Multi-Line Insurance | Corporate Officer/Principal Corporate Officer/Principal | |
| KRAFT HEINZ | Food: Major Diversified | Director/Board Member Director/Board Member | |
Horatio Alger Association of Distinguished Americans, Inc.
 Horatio Alger Association of Distinguished Americans, Inc. Miscellaneous Commercial ServicesCommercial Services Horatio Alger Association of Distinguished Americans, Inc. is based in Alexandria. The American company honors outstanding leaders who have achieved remarkable success despite adversity by awarding them the Horatio Alger Award and inducting them as lifetime members. The association also supports young people by providing resources and confidence for them to pursue higher education and overcome adversity. In 2024, they are awarding over $18 million in need-based scholarships to 1,800 students and offering comprehensive support services. The Horatio Alger Association of Distinguished Americans, Inc. is an organization founded in 1947 that believes in the power of hard work, honesty, and determination to overcome obstacles. Lesley Albanese has been the CEO of the company since 2024. | Miscellaneous Commercial Services | Director/Board Member Chairman | |
The Institute of Internal Auditors
 The Institute of Internal Auditors Miscellaneous Commercial ServicesCommercial Services The Institute of Internal Auditors is an international professional association that serves over 235,000 members and has awarded more than 190,000 certified internal auditor (CIA) certifications worldwide. The non-profit company is based in Lake Mary, USA and has subsidiaries in more than 170 countries and territories. Established in 1941, the IIA is recognized throughout the world as the internal audit profession's leader in standards, certifications, education, research, and technical guidance. Anthony J. Pugliese has been the CEO of the American company since 2021. | Miscellaneous Commercial Services | Corporate Officer/Principal Corporate Officer/Principal | |
| Colgate University | College/University | Undergraduate Degree Undergraduate Degree | |
Council on Foreign Relations, Inc.
 Council on Foreign Relations, Inc. Investment Trusts/Mutual FundsMiscellaneous Council on Foreign Relations, Inc. provides and disseminates ideas on foreign policies to individuals, corporate members, journalists and policy makers. It operates a forum for government officials, students and other interested parties to study and discuss world issues and impact on American foreign policies. The company publishes Foreign Affairs, a magazine that comes out six times a year, along with books and studies by its own scholars. Council on Foreign Relations was founded in 1921 and is headquartered in New York City, NY. | Investment Trusts/Mutual Funds | Director/Board Member Director/Board Member | |
SPS Chevron Ltd.
 SPS Chevron Ltd. Financial ConglomeratesFinance Founded in 1998, SPS Chevron Ltd. is an investment holding British company that operates as a subsidiary of an undisclosed parent company. The private company is based in Leicester, UK. | Financial Conglomerates | Director/Board Member Director/Board Member | |
The Business Roundtable
 The Business Roundtable Miscellaneous Commercial ServicesCommercial Services The Business Roundtable advocates public policies that ensure economic growth. It considers public policy issues which contains groups like the construction users anti-inflation roundtable, a group devoted to containing construction costs; and the labor law study committee, made up of labor relations executives of major companies. The Business Roundtable was founded in 1972 and is headquartered in Washington, DC. | Miscellaneous Commercial Services | Director/Board Member Corporate Officer/Principal | |
| PROCTER & GAMBLE COMPANY | Household/Personal Care | Director/Board Member Director/Board Member | |
| Drake University | College/University | Undergraduate Degree Director/Board Member | |
| The Wharton School of the University of Pennsylvania | College/University | Undergraduate Degree Undergraduate Degree |
Statistics
International
| United States | 44 |
| United Kingdom | 8 |
Sectoral
| Consumer Services | 14 |
| Finance | 11 |
| Commercial Services | 7 |
| Producer Manufacturing | 6 |
| Consumer Non-Durables | 4 |
Operational
| Director/Board Member | 402 |
| Corporate Officer/Principal | 158 |
| Chairman | 95 |
| Independent Dir/Board Member | 89 |
| Chief Executive Officer | 76 |
Most connected contacts
| Insiders | |
|---|---|
| Gregory Abel | 40 |
| Ronald Olson | 33 |
| Lester Lyles | 31 |
| Kenneth Chenault | 31 |
| Warren Buffett | 23 |
| Steve Burke | 21 |
| Sue Decker | 20 |
| Ruth Ann Beyer | 20 |
| David Sokol | 20 |
| Lai Mun Wong | 20 |
| Constantine Iordanou | 19 |
| Chris Davis | 19 |
| Todd Combs | 19 |
| Tom Murphy | 17 |
| Shawn Rene Hagel | 15 |
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