Technically that is unclear this is what he says:
‘No doubt it is,’ Caplan conceded, ‘but I don’t want the superintelligence to come into existence before I’m uploaded. It’s very important to me that I’m the first transcendent being in this stellar system. I can’t risk having to compete with another resource-hungry entity; I have personal plans that require at least one Jovian mass of computronium.’
Before
spoiler
Dying of a side effect of his life extension experiments a few decades later. ( Or more freezing himself). One of the protagonists quips, at least now Jupiter is safe.