Indeed, according to the reputable site The Athletic, the San Jose Sharks would be open to potentially trading their 4th overall pick.
In the event that Kent Hughes and his team would be wary of selecting Matvei Michkov at the 5th spot, estimating that he should be the last remaining player of the big-5, there could be an opening for the CH to climb up one spot, in order to have the opportunity to choose between Michkov and an Adam Fantilli, a Leo Carlsson, or a Will Smith.
There are some people who believe that the Canadiens should go for it and get the 4th and 5th pick of the class, which would be major for the rebuild. However, we have to be realistic, the club simply does not have the resources to trade to acquire such a pick, given the rebuild and the Sharks' current needs.
On the other hand, the idea of moving up one spot could be seriously considered by the Montreal organization, in order to ensure they get an elite player in this exceptional draft.