Private company

International Metalworking Companies

Precision tools conglomerate headquartered in Israel

IMC International Metalworking Companies B.V., otherwise known as IMC Group, is the holding company of several worldwide manufacturers of metal cutting tools. Together they produce a wide range of carbide inserts, carbide endmills and cutting tools covering all metal cutting applications. The IMC Group is in the automotive, aerospace, die and mold, general engineering, bearing manufacturing and energy industries.2 It was founded by Stef Wertheimer.1 It is part of Berkshire Hathaway.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1952Founded1

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IMC International Metalworking Companies B.V., otherwise known as IMC Group, is the holding company of several worldwide manufacturers of metal cutting tools. Together they produce a wide range of carbide inserts, carbide endmills and cutting tools covering all metal cutting applications. The IMC Group is in the automotive, aerospace, die and mold, general engineering, bearing manufacturing and energy industries.2

Corporate structure

International Metalworking Companies is part of a group headed by Berkshire Hathaway. 1,533 entities, 33 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Berkshire Hathaway Omaha, Nebraska, United States
    • AltaLink 100% · Calgary, Alberta, Canada
    • Berkshire Hathaway Energy 89.94% · Des Moines, Iowa, United States
      • Northern Powergrid Newcastle Upon Tyne, United Kingdom
        • 4 more
      • NV Energy Las Vegas, Nevada, United States
      • Elmore Subsidiary · Elmore
      • Integrated Utility Services UK Subsidiary · Yorkshire
      • BHE RENEWABLES, LLC Subsidiary · Des Moines, Iowa, United States
        • 4 more
      • BHER POWER RESOURCES, INC. Subsidiary · Scottsdale, Arizona, United States
      • CORDOVA ENERGY COMPANY LLC Subsidiary · Des Moines, Iowa, United States
      • FLAT TOP WIND I, LLC Subsidiary · Des Moines, Iowa, United States
      • KERN RIVER GAS TRANSMISSION COMPANY Subsidiary · Salt Lake City, Utah, United States
      • MARIAH DEL NORTE LLC Subsidiary · Des Moines, Iowa, United States
      • MARSHALL WIND ENERGY LLC Subsidiary · Des Moines, Iowa, United States
      • MIDAMERICAN ENERGY SERVICES, LLC Subsidiary · Des Moines, Iowa, United States
      • NORTHERN NATURAL GAS COMPANY Subsidiary · Omaha, Nebraska, United States
      • PINYON PINES WIND I, LLC Subsidiary · Des Moines, Iowa, United States
      • PINYON PINES WIND II, LLC Subsidiary · Des Moines, Iowa, United States
      • SANTA RITA WIND ENERGY LLC Subsidiary · Des Moines, Iowa, United States
      • SARANAC POWER PARTNERS, L.P. Subsidiary · Wilmington, Delaware, United States
      • TX JUMBO ROAD WIND, LLC Subsidiary · Des Moines, Iowa, United States
    • International Metalworking Companies Galilee
    • MidAmerican Energy Company Des Moines, Iowa, United States
    • NEW ENGLAND ASSET MANAGEMENT, INC. Farmington, Connecticut, United States
    • PacifiCorp Portland, Oregon, United States
    • Precision Castparts Corp. Lake Oswego, Oregon, United States
      • Special Metals Corporation Subsidiary · New Hartford, New York, United States
      • AETC LIMITED Subsidiary · Leeds, United Kingdom
      • CALEDONIAN ALLOYS LIMITED Subsidiary · Livingston, United Kingdom
      • Cannon-Muskegon Corporation Subsidiary · Muskegon, Michigan, United States
      • Centra Industries Inc. Subsidiary · Cambridge, Ontario, Canada
      • J & L Fiber Services, Inc. Subsidiary · Waukesha, Wisconsin, United States
      • KALISTRUT AEROSPACE Subsidiary · Saint-Vallier, France
      • PCC Airfoils, S.A. DE C.V. Subsidiary · Merida, Mexico
      • PCC DISTRIBUTION JAPAN K. K. Subsidiary · Machida Shi, Japan
      • PCC Specialty Products, Inc. Subsidiary · Wexford, Pennsylvania, United States
      • PCC UK FINANCE LIMITED Subsidiary · Leicester, United Kingdom
      • PRECISION CASTPARTS CORP.FRANCE Subsidiary · Ogéu-Les-Bains, France
      • PRECISION CASTPARTS CZ S.R.O. Subsidiary · Plzen, Czechia
      • S. P. S. INTERNATIONAL LIMITED Subsidiary · Shannon, Ireland
      • SHUR-LOK INTERNATIONAL Subsidiary · Verviers, Belgium
      • SPECIAL METALS WIGGIN LIMITED Subsidiary · Hereford, United Kingdom
      • SPS AEROSTRUCTURES LIMITED Subsidiary · Nottingham, United Kingdom
      • SPS TECHNOLOGIES LIMITED Subsidiary · Leicester, United Kingdom
      • TARPEY-HARRIS LIMITED Subsidiary · Ripley, United Kingdom
      • THE S.P.S. INTERNATIONAL LIMITED PENSION AND LIFE ASSURANCE PLAN Subsidiary · Shannon, Ireland
      • TIMET UK LIMITED Subsidiary · Birmingham, United Kingdom
      • WESTERN AEROSPACE LIMITED Subsidiary · Perth, Australia
      • WESTERN AUSTRALIAN SPECIALTY ALLOYS PTY. LTD. Subsidiary · Perth, Australia
      • Wyman Gordon Monterrey S. de R.L. de C.V. Subsidiary · Guadalupe, Mexico
      • WYMAN-GORDON LIMITED Subsidiary · Hereford, United Kingdom
    • Berkshire Hathaway GUARD Insurance Companies Subsidiary
    • biBERK Business Insurance Subsidiary · Omaha, United States
    • Borsheim's Fine Jewelry Subsidiary · Omaha
    • Business Wire Subsidiary · San Francisco
    • BVD Subsidiary · United States
    • Central States Indemnity Subsidiary
    • Dairy Queen Subsidiary · Edina
    • ISCAR Metalworking Subsidiary · Western Galilee
    • Kerite Company Subsidiary · Seymour
    • Kirby Company Subsidiary · Cleveland
    • Kraft Heinz Subsidiary · Pittsburgh, Pennsylvania, United States
      • 161 more
    • Marmon Group Subsidiary · Chicago
      • 1 more
    • Pilot Flying J Subsidiary · Knoxville
      • 1 more
    • Scott Fetzer Company Subsidiary
    • Teva Pharmaceutical Industries Ltd. Subsidiary · Tel Aviv, Israel
      • 40 more
    • H. J. Heinz Company Stake · 26.8% · Pittsburgh, Pennsylvania, United States
      • 4 more
    • American Express Stake · 15.6% · New York, New York, United States
      • AMERICAN EXPRESS TRAVEL RELATED SERVICES CO INC New York, New York, United States
        • 7 more
      • 56th Street AXP Campus LLC Subsidiary · Arizona, United States
      • AAC Statutory Trust Subsidiary · Delaware, United States
      • AE Exposure Management Limited Subsidiary · Jersey
      • AE Innovation Labs Holdings, LLC Subsidiary · Delaware, United States
      • AEOCC Funding Australia Limited Subsidiary · Jersey
      • AEOCC Management Company Limited Subsidiary · Jersey
      • American Express (India) Private Limited Subsidiary · India
      • American Express (Malaysia) SDN. BHD. Subsidiary · Malaysia
      • American Express (Thai) Company Limited Subsidiary · Thailand
      • American Express Argentina S.A. Subsidiary · Argentina
      • American Express Asia Network Consulting (Beijing) Limited Company Subsidiary · China
      • American Express Australia Limited Subsidiary · Australia
      • American Express Bank LLC Subsidiary · Moscow, Russia
      • AMERICAN EXPRESS BANKING CORP. Subsidiary · New York, New York, United States
      • AMEX (Middle East) QFC LLC Subsidiary · Qatar
      • AMEX Assurance Company Subsidiary · Illinois, United States
      • AMEX Insurance Agency (Taiwan) Inc. Subsidiary · Taiwan
      • AXP Insurance Master Trust Subsidiary · New York, United States
      • Loyalty Partner Solutions GmbH Subsidiary · München, Germany
      • and 78 more
    • Moody's Corporation Stake · 12.6% · New York, New York, United States
      • 166 more
    • and 287 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

Founded by Stef Wertheimer in 1952.1

Leadership

Who has led International Metalworking Companies, and when. Pick a name to see everywhere that person has worked.

Products and brands

Today, the IMC Group has over 130 subsidiaries in 65 countries.

Primary Subsidiaries:

ISCAR

TaeguTec

Read the full text

Tungaloy

Ingersoll Cutting Tools

From Wikipedia’s article on International Metalworking Companies, shared under CC BY-SA 4.0.3

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1952Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3