Do custodians that administer your IRA account have to report what your RMDs are to you (in this case a Trust) or the IRS?

My father’s Trust was the sole inherited IRA Beneficiary. I read a Kiplinger article on the internet that said “custodians that administer your account have to report what your RMDs are”. Do they do this for a Trust? Do they report the RMDs tthe IRS? The Trust has 4 Beneficiaries who are all different ages. Charles Schwab is the custodian never asked for the Trust document and they don’t know the ages of the beneficiaries so I don’t know how they would calculate the RMDs.