Corporate / 06
Partners & Management
51% private, 49% public partnership
Ownership Structure
51% Private · 49% Public
Majority private since founding, TÜMAŞ runs a hybrid corporate governance model combined with a public stake.
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Private Shareholders
Private sector
%51
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Sümer Holding A.Ş.
Public
%49
Executive Team
From strategic decisions to daily operations
Chairman of the Board
F. Zafer Heperler
Board Member
Deniz Heperler
General Manager
Emre Tüzemen
Deputy General Manager
İlke Heperler
Deputy General Manager
Önder Seyis
Other Pages
Other pages on our corporate identity
- 01 Chairman's Message Carrying 50 years of expertise into the future →
- 02 History Milestones from 1969 to today →
- 03 Mission & Vision How we shape tomorrow →
- 04 Quality Policy ISO 9001:2015 certified process management →
- 05 Engineering Departments Our discipline leaders →
- 07 International Affiliations Part of the global engineering community →
- 08 Memberships & Certifications Our professional and quality credentials →
- 09 Locations In Türkiye and worldwide →