A Swiss crypto trader wanted for questioning in the horrific SoHo torture of an Italian Bitcoin millionaire is enjoying a posh Memorial Day weekend in the Hamptons before turning himself in, sources told The Post.

The Euro exec was named as a person of interest in the sensational case after the arrest of Kentucky crypto king John Woeltz on Friday for allegedly kidnapping and torturing wealthy trader Michael Valentino Teofrasto Carturan at a ritzy townhouse on Prince Street in Manhattan.

Woeltz, who sources said owns a private jet and chopper and is worth at least $100 million, was arraigned on kidnapping, unlawful imprisonment and weapons possession charges and ordered held without bail in Manhattan Criminal Court.

His assistant, 24-year-old Beatrice Folchi, was also arrested but released after the Manhattan DA’s Office declined to prosecute her pending further investigation, officials said.

Cops launched a manhunt for a third person tied to the case — the Swiss trader — who sources have told The Post reached out to police and said he would surrender this week.

According to sources, Carturan, who is reportedly worth $30 million, was lured to the SoHo pad and held captive while his tormentors tortured him for his Bitcoin password.

The Italian national was tied to a chair and tasered while his feet were in a bucket of water, was urinated on, pistol-whipped and had his arms and legs cut with a chainsaw, law-enforcement sources said.

He was allegedly also dangled from the top of a staircase during the vicious ordeal.

Police said Carturan was finally able to escape Friday when his captors were distracted.

He was being treated at Bellevue Hospital, sources said.