As required by 60.M.1.a.(1) of the ALPA Administrative Manual, the president's compensation (as well as the compensation of every other national officer) is published on the ALPA web site, and is shown month-by-month so you can see it in detail.
As for Captain Moak specifically, his monthly salary is $25,000. So, in other words, the LM-2 report is misleading, and by quite a bit. It overstates the president's salary by just under $100,000. That is what happens when anti-labor lawmakers get ahold of labor regulations and force unions to report misleading data to turn members against them.