The buyers are Athanas Enterprise and Abellon Energy, according to stock exchange block deal data.
Arjun holds 99.9% of Athanas total share capital while Aditya holds, directly and indirectly, a stake of 88.15% in Abellon Energy, according to a BSE filing dated December 20.
The four promoters of the Ahmedabad-based company are the Handa brothers, Medical Technologies and Sarjan Financial.
The transfer of the 60.21% stake consisted of about 3.8 crore shares for a total consideration of R801 crore, with 2.8 crores priced at R204.7 each and the remaining at R219.1 apiece.
Claris Lifesciences Ltd' share price rose as much as 15.4% to Rs 229 before closing down 2.09% at Rs 194.30 on the Bombay Stock Exchange on Monday.