New York Attorney General Andrew Cuomo said late Monday that 15 of the top 20 recipients of $165 million in retention bonuses from American International Group Inc.'s Financial Products unit have agreed to give back their bonuses -- amounting to in excess of $30 million in cash.

Mr. Cuomo's office said, in all, AIG FP employees agreed to return about $50 million in bonuses thus far.

"I...