Definitely a kind gesture from this CEO considering that some people won't even leave a tip when they're served wild caught fish by a minimum wage employee at their favorite restaurant, however, this is a first-world donation. Sure, we shouldn't judge his donation on how much he sacrificed personally, but IMHO it would have more impact to human progress if he actually sold the stock to help refugees that actually are in need of housing, bread, and water.
If what I wrote above doesn't make sense to you, perhaps the following quote will resonate with you: "The test of our progress is not whether we add more to the abundance of those who have much, it is whether we provide enough for those who have little." -Franklin D. Roosevelt