Yes, you should report your 1099-B.
Generic drug maker Mylan officially combined with Pfizer Inc.’s Upjohn unit to form a new company called Viatris.
If you received a 1099-B it's likely you have a reportable transaction and should enter the 1099-B in your tax filling.
-follow this link for instructions on filing a 1099-B-
Where do I enter a 1099-B?
