Carillion’s group finance director has stepped down two months after the chief executive left the company.
Zafar Khan has left the company with immediate effect after nine months in the role, and several other changes to the board have been made.
The construction and support services group suffered a £845M writedown in July and 70% was wiped off the share value.
Chief operating officer Richard Howson, managing director of construction services Adam Green, and managing director of services Nigel Taylor will leave the company on 30 September.
Group strategy director Shaun Carter will also leave the company by the end of the year.
Emma Mercer has been appointed chief financial officer with immediate effect and was previously finance director of the UK construction business and chief financial officer and senior vice president of Carillion Canada.
Lee Watson has been appointed chief transformation officer on secondment from Ernst & Young LLP (EY), where he has been a partner since 2008.
Carillion Canada president and chief executive Andy Jones will take up the role of chief operating officer on 1 October.