 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether Aegion Corporation NASDAQ: AEGN and its board of directors violated the federal securities laws andor breached their fiduciary duties to shareholders in connection with the proposed sale of Aegion to affiliates of New Mountain Capital, L.L.C. Under the terms of the agreement, Aegion shareholders will receive 26.00 per share in cash. On behalf of Aegion shareholders, Halper Sadeh LLP may 