Ex-Wall Street banker says he did not give insider tips to father

By Nate Raymond NEW YORK (Reuters) - A former Wall Street investment banker proclaimed on Thursday that he was innocent of insider trading charges, testifying that he never tipped his father off to inside information about healthcare mergers. Sean Stewart, an ex-banker at Perella Weinberg Partners and JPMorgan Chase & Co , took the stand in his own defense and told jurors in federal court in Manhattan that he had a great relationship with his father but never intended to help him profit thro