Retirement tax questions

Wow, a very thorough response - better than what I expected to be honest, so thanks.  I do need to clarify - none of the IBIT investment was sold in 2025 so the only "sales" I can fathom from my research are the frequent periodic sales that Black Rock made to cover their management fee - the Brokerage (Schwab) has been most unhelpful despite me trying to get some guidance from their "Tax area", and their additional tax information does not explain what I am supposed to do with the information that was provided to me.  I did find an example online on the Black Rock web site on how to calculate a reduction in the cost basis of the shares I own as a result of the selling of tiny amounts to cover the periodic management fee, but the example provides no guidance on whether I need to report anything until I sell the shares.....do you know if I need to report anything prior to a sale of the shares?