Stephan Sienz – Biography

Last update: March 1, 2026

Executive profile

Stephan Sienz joined Apollo Global Management in 2017.

Stephan Sienz is currently

Vice President of Global Supply Chain at Vacuumschmelze - View - Vacuumschmelze org chart



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  • In the Metal industry, Stephan Sienz has 15,732 colleagues in 1,007 companies located in 68 countries. 5,703 executive movements have been recorded in the last 12 months. Learn more about Metal.

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Through the switchboard, call Vacuumschmelze at +49... and ask for Stephan Sienz.

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