Im a holder of a small to medium mining company with some...

Im a holder of a small to medium mining company with some potential market sensitive new tech & have discovered that

*The 2nd largest shareholder with 20 % of the co is the plant manager.

*This shareholder is not a director so is not bound by disclosure rules.

*This shareholder has been slowly selling off shares.

*This info is not publicly known

Is to company obliged to release to the general market this sort of info?

thanks