But if we’re talking about not selling 100%? Besides Satoshi, quite unlikely I think.
I find that there were a lot of those who mined while it was still possible with ordinary computers, and many of them lost access to their private keys and never profited from their mining. This is not strange considering the value that BTC had at the time, and also the fact that selling was not as easy as it is today.
But is there any known miner who has not sold their BTC for a single time who is mining for a long time now?
If there is such a person, then it is someone for whom money is not a problem in life - he does not do it for profit, but for some completely different reasons. While it may sound strange, there are people who support Bitcoin without their main motive being profit.