PE Boss Constantino Ran Firm in ‘Drunken Haze,’ Ex-COO Says (1)

On a Dominican Republic vacation five years ago, private equity boss Matthew Constantino almost died.

The Delos Capital Management founder went on to write a self-help book describing a near-death experience from drinking contaminated alcohol that sent him on a journey of daily gratitude and doctor-assisted ketamine use. But Delos’ former chief operating officer claims in a lawsuit that the incident was part of a pattern of excessive drinking and erratic behavior.

Delos and Constantino, a former Apollo Global Management partner, were sued last week by ex-Delos COO Sanjay Sanghoee, who claims the founder’s conduct sabotaged the middle-market private ...