Mamlouk joined ATC in 1989 and assumed his current role in 2003. Today, ATC is a healthcare and environmental solutions provider. It is 44.06% owned directly and indirectly by KIPCO and recorded revenues of $409 million in the first nine months of 2022, compared to $332.2 million in the same period of 2021. Mamlouk has over 36 years of experience in sales, marketing, technical, and administration.