India: Madhavi Isanaka has resigned as Chief Digital Officer (CDO) at Ambuja Cements with immediate effect citing medical reasons and personal commitments.

Isanaka became CDO at Ambuja Cements in early 2025. She has been CDO at fellow Adani Group subsidiary Adani Green Energy since mid-2022. Earlier in her career she worked for US-based engines and power systems company Cummins in information and digital roles from 2001 to 2019. She later held the post of Vice President of IT, CIO at US-based electric car manufacturer Rivian from 2019 to 2021. Isanaka holds an undergraduate degree in engineering from Sri Venkateswara University, Tirupati, and a master’s of business administration (MBA) qualification from Indiana University in the US.

Türkiye: Akçansa has appointed Tayfun Öneş as its General Manager.

Öneş previously worked as the CEO of Mercedes-Benz Financial Services Romania from 2014 to 2021. Earlier in his career, he worked for Akçansa as its Assistant General Manager - Sales & Marketing. He also held positions as the Company Manager of Akçansa’s aggregates subsidiary Agresa, as a Strategy & Development Manager for Akçansa and as a Marketing & Planning Manager for Çanakkale Çimento in the 1990s and early 2000s. Öneş is a graduate in business economics from the Middle East Technical University in Ankara.

Germany: Qlar Group, formerly Schenck Process, has appointed Thomas Giese as its Chief Financial Officer (CFO). He succeeds Dirk Scholz in the role. Giese has assumed responsibility for accounting, controlling, treasury, tax and legal functions.

Giese holds over 30 years’ experience in the industrial sector. He has held management roles at Elster, GKN, IFA, BOS and KraussMaffei, among others. He notably worked for over 16 years at Elster Group from the late 1990s to 2015 eventually become its CFO and Managing Director Gas & Electricity Global.

Canada: CarbonCure Technologies has elected Onne van der Weijde as its chair. He succeeds William Holden, who has worked as board director, vice president of sales, chair of the industry advisory council and chair since 2014.

Van der Weijde joined the company’s board in 2024 and has served as vice chair since 2025. He is also senior advisor to the CEO of CRH, board member and chair of the finance committee at Siam City Cement and a board member of subsidiary Republic Cement. He previously served as managing director and CEO of both Dangote Industries and Ambuja Cements. Van der Weijde holds a master’s degree in business administration (MBA) from the University of Bradford in the UK and an undergraduate degree in General Business Administration and Management from the Hague University of Applied Sciences in the Netherlands.