Sanima Group comprises companies which are operational in Nepal and other countries of the world. These companies are run by prominent non-resident Nepalis (NRNs) residing in different parts of the globe. Arun Kumar Ojha, Tek Raj Niraula and Jiba Lamichhane are the key NRNs who are heading different companies under the umbrella of Sanima Group. The group has major investment in hydropower and banking sector while its portfolio also expands to the insurance, health and media and communication sectors.  The seeds of Sanima Group of Companies were sowed in the former Soviet Russia when Ojha, Niroula and Lamichhane joined hands to start a business. The three men had gone to Russia in the 1980s to pursue their higher studies. They were also engaged in business activities apart from studies. Arun Ojha and Tek Raj Niraula used to run an electrical business in Moscow while Lamichhane who migrated to Russia in 1986 worked as a dealer for Sony, LG and Samsung brands in Russia during his initial days as a businessman. The trio combined their businesses and academic expertise and turned into millionaires with business setups in foreign land.

 In 1999, they founded the Sanima Hydropower Limited in Nepal, the first company of the Sanima Group, that constructed the 2.6 MW Sunkoshi Small Hydropower Project. Their investment efforts were complimented by Belarus-Russian entrepreneurs including Dr Upendra Mahato, Khem Lamichhane, Binaya Kumar Shrestha, Dr Niraj Govind Shrestha, Olga Ojha, Ram Krishna Shah and Ghanashyam Thapa. Afterwards, the group formed Sanima Hydro, a group of private and public companies with investments from NRNs. After the successful implementation of the Sunkoshi Small Hydropower Project, the group established multiple special purpose vehicles and invested in multiple hydropower projects with a total generation capacity of over 100 MW. The companies under Sanima Hydro include, Sanima Hydropower Limited, Sanima Middle Tamor Hydropower Ltd, Sanima Hydro and Engineering Pvt Ltd, Tamor Sanima Energy Pvt Ltd, Swet Ganga Hydropower and Construction Ltd and Sanima Hydro and Engineering Pvt Ltd (SHEPL).

In 2004, the group forayed into financial services with the establishment of Sanima Bank which started as a national level development bank. A decade later, the development bank was upgraded to a commercial bank which has been a key milestone for the group. Sanima Group of Companies now comprises a life insurance company, Sanima Life Insurance, while a general insurance company is all set to begin operation in April.