Theo Siegert

Chief Executive Officer at

Schmalenbach Foundation

Net worth: 22 M $ as of 2026-02-27

78 year

81 connections

Finance

Health Technology

Distribution Services

Profile

Theo Siegert is a German businessperson who has been at the head of 6 different companies. Dr. Siegert is Chairman-Management Board at Schmalenbach Foundation, Vice President & Treasurer at Industrie-Club e.V. Düsseldorf and Managing Partner at De Haen Carstanjen & Söhne GmbH. He is also on the board of Henkel AG & Co. KGaA and E. Merck KG and Chairman-Supervisory Board for Stiftung Marktwirtschaft GmbH. In the past he was Commercial Director at Haniel Umweltschutz GmbH, Chairman-Supervisory Board for McKesson Europe AG, Member-Supervisory Board at METRO AG and Chairman-Management Board at Franz Haniel & Cie. GmbH. Theo Siegert received a doctorate, an MBA and an undergraduate degree from Ludwig-Maximilians-Universität München.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
Schweizerische Nationalbank Schweizerische Nationalbank Major BanksFinance Provides commercial banking services 5.01%	2024-12-30	5,010 ( 5.01% )	22 M $	2026-02-27

Theo Siegert active positions

Companies	Position	Start
E. Merck KG E. Merck KG Pharmaceuticals: MajorHealth Technology Operates as a holding company with interests in pharmaceutical preparations	Director/Board Member	2014-02-06
De Haen Carstanjen & Söhne GmbH	Corporate Officer/Principal	2010-09-13
Industrie-Club e.V. Düsseldorf Industrie-Club e.V. Düsseldorf Miscellaneous Commercial ServicesCommercial Services Operates industrial club	Treasurer	-
Schmalenbach Foundation	Chief Executive Officer	-
Stiftung Marktwirtschaft GmbH Stiftung Marktwirtschaft GmbH Investment Trusts/Mutual FundsMiscellaneous Operates as a foundation or endowment	Chairman	-

All active positions of Theo Siegert

Former positions of Theo Siegert

Companies	Position	End
MERCK KGAA	Director/Board Member	2019-04-25
EON SE	Director/Board Member	2018-05-08
DEUTSCHE BANK AG	Director/Board Member	2012-05-30
ERGO Group AG ERGO Group AG Multi-Line InsuranceFinance Provides life, health and property insurance policies, pensions & investment services	Director/Board Member	2010-05-11
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See the detail of Theo Siegert's experience

Training of Theo Siegert

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Theo Siegert's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	16
Deutsche Bank AG Deutsche Bank AG Investment Banks/BrokersFinance Provides investment & corporate banking and asset management services	Finance
Merck KGaA Merck KGaA Pharmaceuticals: MajorHealth Technology Engages in the manufacturing of pharmaceutical and chemical products	Health Technology
Henkel AG & Co. KGaA Henkel AG & Co. KGaA Industrial SpecialtiesProcess Industries Manufactures and sells adhesives, sealants, laundry, home & hair care products	Process Industries
E.ON SE E.ON SE Electric UtilitiesUtilities Provides power and gas distribution networks and related services	Utilities
ERGO Group AG ERGO Group AG Multi-Line InsuranceFinance Provides life, health and property insurance policies, pensions & investment services	Finance
METRO AG /Old/ METRO AG /Old/ Food RetailRetail Trade Owns, operates, and manages chain of supermarkets	Retail Trade
McKesson Europe AG McKesson Europe AG Medical DistributorsDistribution Services Provides logistics and services to the pharmaceutical and healthcare sectors	Distribution Services
De Haen Carstanjen & Söhne GmbH
Franz Haniel & Cie. GmbH Franz Haniel & Cie. GmbH Investment ManagersFinance Haniel is an active manager that seeks to invest in diversified established sustainable companies, but it also provides growth and earlier stage capital for companies in development stages.	Finance
DKSH Holding Ltd. DKSH Holding Ltd. Medical DistributorsDistribution Services Operates as a holding company which engages in the consumer goods, healthcare, performance materials and technology activities	Distribution Services
Ludwig-Maximilians-Universität München Ludwig-Maximilians-Universität München Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
E. Merck KG E. Merck KG Pharmaceuticals: MajorHealth Technology Operates as a holding company with interests in pharmaceutical preparations	Health Technology
Industrie-Club e.V. Düsseldorf Industrie-Club e.V. Düsseldorf Miscellaneous Commercial ServicesCommercial Services Operates industrial club	Commercial Services
Schmalenbach Foundation
Stiftung Marktwirtschaft GmbH Stiftung Marktwirtschaft GmbH Investment Trusts/Mutual FundsMiscellaneous Operates as a foundation or endowment	Miscellaneous
Haniel Umweltschutz GmbH