Which company produces canakinumab?

Who manufactures canakinumab?

Canakinumab is produced by Novartis. [1]

Is canakinumab sold under a specific brand name?

Yes. Canakinumab is marketed as Ilaris (by Novartis). [1]

Are there any other companies that produce it?

Based on the available information, the manufacturer/producer of canakinumab is Novartis. [1]

Sources
[1] https://www.drugpatentwatch.com/patent/Canakinumab