Andrea Battiston, PhD Senior Global Technical Specialist Hydroprocessing Catalysts Albemarle Catalysts BV 1022 AB Amsterdam The Netherlands Amsterdam, July 20, 2018 Subject: reference Simon Velt To Whom It May Concern: It is with great pleasure that I recommend Simon Velt for employment at your organisation. I have collaborated with Simon over the last fifteen years in different roles and projects. For a period of three years Simon has also reported directly to me. Simon’s career has developed over the years in the Albemarle Catalysts (previously Akzo Nobel) R&D organization. He has first covered a position in the Catalysts Testing Department in an important role for the improvement and validation of new testing hardware and catalysts. Then he moved to a position as Scientist, working on the development of new catalysts formulations. Thanks to his skills, which include high dedication and accuracy, deep technical knowledge and very good social skills, Simon has grown in the organization. Simon’s strive to continuously improve has led him to study alongside his regular work. I was his supervisor when he completed his additional technical studies while working at Albemarle. I was impressed by him graduating perfectly in time, with very high grades and without impacting his performance at work. Thanks to his personal and professional growth, Simon was promoted to the Catalysts Application Department as an Application Engineer, which is the position that he has covered for the last years. In his first three years at the Catalysts Application Department Simon reported directly to me, and during that period I have been able to follow him on a daily basis. I know Simon as a very dedicated and skilled employee, and as an accurate scientist and engineer. He is very independent and reliable. Simon has a strong ability to adapt to different working environments and roles. Combined with the vast knowledge and experience developed in the years at Albemarle, I am convinced Simon has very unique skills in the job market. Simon is a very valuable asset for different types of organizations. Fully dedicated to his work, he is a very pleasant and considerate individual who will make a great addition to your team. Do not hesitate to contact me should you have further questions. Yours sincerely, Andrea Battiston Senior Global Technical Specialist Hydroprocessing Catalysts at Albemarle Catalysts

Andrea Battiston, PhD Senior Global Technical Specialist Hydroprocessing Catalysts Albemarle Catalysts BV 1022 AB Amsterdam The Netherlands Amsterdam, July 20, 2018 Subject: reference Simon Velt To Whom It May Concern: It is with great pleasure that I recommend Simon Velt for employment at your organisation. I have collaborated with Simon over the last fifteen years in different roles and projects. For a period of three years Simon has also reported directly to me. Simon’s career has developed over the years in the Albemarle Catalysts (previously Akzo Nobel) R&D organization. He has first covered a position in the Catalysts Testing Department in an important role for the improvement and validation of new testing hardware and catalysts. Then he moved to a position as Scientist, working on the development of new catalysts formulations. Thanks to his skills, which include high dedication and accuracy, deep technical knowledge and very good social skills, Simon has grown in the organization. Simon’s strive to continuously improve has led him to study alongside his regular work. I was his supervisor when he completed his additional technical studies while working at Albemarle. I was impressed by him graduating perfectly in time, with very high grades and without impacting his performance at work. Thanks to his personal and professional growth, Simon was promoted to the Catalysts Application Department as an Application Engineer, which is the position that he has covered for the last years. In his first three years at the Catalysts Application Department Simon reported directly to me, and during that period I have been able to follow him on a daily basis. I know Simon as a very dedicated and skilled employee, and as an accurate scientist and engineer. He is very independent and reliable. Simon has a strong ability to adapt to different working environments and roles. Combined with the vast knowledge and experience developed in the years at Albemarle, I am convinced Simon has very unique skills in the job market. Simon is a very valuable asset for different types of organizations. Fully dedicated to his work, he is a very pleasant and considerate individual who will make a great addition to your team. Do not hesitate to contact me should you have further questions. Yours sincerely, Andrea Battiston Senior Global Technical Specialist Hydroprocessing Catalysts at Albemarle Catalysts

Andrea Battiston, PhD Senior Global Technical Specialist Hydroprocessing Catalysts Albemarle Catalysts BV 1022 AB Amsterdam The Netherlands Amsterdam, July 20, 2018 Subject: reference Simon Velt To Whom It May Concern: It is with great pleasure that I recommend Simon Velt for employment at your organisation. I have collaborated with Simon over the last fifteen years in different roles and projects. For a period of three years Simon has also reported directly to me. Simon’s career has developed over the years in the Albemarle Catalysts (previously Akzo Nobel) R&D organization. He has first covered a position in the Catalysts Testing Department in an important role for the improvement and validation of new testing hardware and catalysts. Then he moved to a position as Scientist, working on the development of new catalysts formulations. Thanks to his skills, which include high dedication and accuracy, deep technical knowledge and very good social skills, Simon has grown in the organization. Simon’s strive to continuously improve has led him to study alongside his regular work. I was his supervisor when he completed his additional technical studies while working at Albemarle. I was impressed by him graduating perfectly in time, with very high grades and without impacting his performance at work. Thanks to his personal and professional growth, Simon was promoted to the Catalysts Application Department as an Application Engineer, which is the position that he has covered for the last years. In his first three years at the Catalysts Application Department Simon reported directly to me, and during that period I have been able to follow him on a daily basis. I know Simon as a very dedicated and skilled employee, and as an accurate scientist and engineer. He is very independent and reliable. Simon has a strong ability to adapt to different working environments and roles. Combined with the vast knowledge and experience developed in the years at Albemarle, I am convinced Simon has very unique skills in the job market. Simon is a very valuable asset for different types of organizations. Fully dedicated to his work, he is a very pleasant and considerate individual who will make a great addition to your team. Do not hesitate to contact me should you have further questions. Yours sincerely, Andrea Battiston Senior Global Technical Specialist Hydroprocessing Catalysts at Albemarle Catalysts