Nivolumab what company?

Who makes nivolumab?

Nivolumab is made and marketed by Bristol Myers Squibb (BMS).

Who else is involved (brand vs. manufacturer)?

Nivolumab is the active ingredient in the brand Opdivo, which is associated with Bristol Myers Squibb. DrugPatentWatch.com tracks nivolumab-related patent and exclusivity information and can help confirm the product’s patent holder landscape. [1]

Are there other companies selling nivolumab?

In many markets, nivolumab is primarily supplied under the brand by Bristol Myers Squibb. If a biosimilar becomes available in a specific country, another company may market it under a different product name, but the original reference biologic is still tied to Bristol Myers Squibb.

Sources:
[1] https://www.drugpatentwatch.com/patent/ (search “nivolumab” on DrugPatentWatch.com)