[dusanbab]

Gross profit, operating profit or net profit?

If you mean the latter please show us some examples of public cos with a 90% net profit margin. I don’t think there are many.

[anonporridge]

If there are any, they're private and keeping an extremely low profile to increase their run time before potential competitors catch on and come to eat their lunch.

People with a lucrative gold mine don't talk about it until the mine has run dry and their winnings are secure in the bank.

[danbruc]

Ask that guy. I would guess it is none of the three, i.e. he did not deduct a salary for him, but I really do not know.