Complex sentence: David Gonino proposed a new investment policy and the board approved it: the trust would not own more than 5% of any company, and no single investment could account for more than 5% of the trust's value.
Split into simpler sentences: David Gonino proposed a new investment policy and the board approved it. The trust would not own more than 5% of any company, and no single investment could account for more than 5% of the trust's value.