Rolf Welti, Switzerland, Zollikon, M, Devidrill AG

Devidrill AGDeleted

Position: chairperson of the board

Authority: individual signing authority

Adwel-Holding A.-G.Deleted

Position: chairperson of the board + managing member of the board

Authority: joint signing authority (any two to sign)

Variainvest Holding AGDeleted

Position: member of the board

Authority: individual signing authority

Idesoft Holding AG in LiquidationDeleted

Position: chairperson of the board

Authority: individual signing authority

Rolf Welti