Gross if the allegations in the suit are true. ANTHC board members are underpaid? The board president's salary needs to quintuple?  Teuber will claim if he isn't paid his $600k he will just take his highly in demand executive management skills elsewhere- let him. There are plenty of competent people who would serve on the board for "only" $120k.
The board members work for a public healthcare system performing public service. They do not need to be paid "market rate" attained by healthcare executives at for profit corporations. This is why "non profit" healthcare is so expensive - instead of shareholder profits sucking all the money out of the system you have unaccountable top executives paying themselves fat bonuses in secret executive sessions as here.