Claiming capital losses on Lumen Technologies stocks

Hi,

I've had telephone company stock since I started with Bell of Pennsylvania in 1980. US West was the original business at divestiture in 1984 but has been merged and sold several times since then. I've had quite a few shares over the years but now the stock is Lumen Technologies, and I have about 15 shares. I'd like to get rid of it but am unsure about how to claim the losses.

 

Thanks,

 

Mary