1099-Misc and 1099-B

My partner passed away last year , as his estate administrator I am attempting to file his taxes (personal and estate).  His employer sent a (2024)1099 Misc form under his name for stocks (listed under Other Income, box 3).  I also received a 1099B Supplemental statement for the same amount from the brokerage firm for when I sold the stock (needed to liquidate and transfer funds to daughter's Estate).  Aren't the two forms reporting the same income?  Wont I be taxed twice for the same funds? Do I need to have his employer correct the 1099 Misc form?   Sorry, lots of questions!