I really dislike articles like this, where they say things like "Billionaires do X", or "Silicon Valley Execs Do Y". They are casting large nets implicating many when in reality the facts they give only point at a few. Please keep in mind I really have no stance on the article one way or another, I am more pointing out the hyperbole of article titles. Having read the article it seems the list only the following 5 people and give their total donation amounts. Please note these amounts are over many years.
Bernie Marcus: $13M,
Haim Saban: $9M,
Casey Wasserman: $525,000.00,
Paul Singer: $1.7M,
Larry Ellison: $26.6M,
Jan Koum: $6.8M