Do Masthead or Margin ever share someone's pay?

No. Nothing they make shows one person's pay: payroll only ever appears as a company total in your monthly accounts. The org chart and people list carry names, titles, teams and managers, never pay. The hiring plan never names a candidate. Cash and runway shows what's owed by age, never a customer's or supplier's name.

Bank statements are the one to watch: they're your bank's own files, so they list every payment, salaries included. Each bank account's first statement waits in your Inbox until someone files it, and once filed, only people who can open its folder see it. The bank statements summary has totals only.