Chris,
All the numbers are taken from the official Form 990s filed. You can verify them for yourself here:
There is also a table of top-earners' base salaries on Meta, with data taken from the Form 990:
Have a look. They show various individuals' salaries increasing by remarkable amounts in recent years.
Jaime Villagomez' base salary for example increased by more than $50,000 in three years, from $237,665 in 2016 to $289,356 in 2019.
Toby Negrin's base salary increased by more than $45,000 over the same time period (from $192,018 to $237,992).
Lisa Seitz-Gruwell's base salary increased by more than $40,000 over that period (from $192,018 to $252,117).
These are all base salaries, excluding "other compensation", which adds another $34K, $33K and $21K to the salary figures for these three individuals, respectively.
You can find the above figures on Page 7 of the following forms:
In 2008, only three people at the WMF earned more than $100,000:
In 2019, it was (at least) 165.
Andreas