Princeton graduate Thomas & # 39; Tommy & # 39; Gilbert Jr. was found guilty of shooting his father in 2015 after the jury rejected his claims of madness.
The verdict was confirmed by a Manhattan jury on Friday afternoon and the 34-year-old is now in jail for 25 years for his second-degree assassination attempt.
Gilbert shot his father, Thomas Sr., in his head at his Upper East Side Home in 2015 after telling his mother to go get him a sandwich and a coke.
He then staged the scene to make it look like the 70-year-old founder of the hedge fund had committed suicide.
The once shaggy-haired socialite tried to claim that he pulled the trigger with a moment of madness and that he was in the middle of a psychotic break. However, prosecutors have successfully convinced the jury that this was not the case.
Princeton graduate Thomas & # 39; Tommy & # 39; Gilbert Jr. has been found guilty of shooting his father in 2015 after the jury's claims of & # 39; mental madness & # 39; had rejected
The verdict was confirmed on Friday by a Manhattan jury and the 34-year-old now gets 25 years in prison with his second-degree assassination attempt
During the five-week trial, prosecutors regularly described Gilbert as a troubled young man who had an easy life on a silver platter, but was unable to find his own way in life and irrational hatred of him developed father – despite the allowance of $ 1,000 a week, he has supported him for so many years.
& # 39; The defendant rejected hard work, instead preferring an easy life to be handed to him on a silver platter & # 39 ;, said assistant DA Craig Ortner on Wednesday.
Thomas Sr. had gradually reduced his son's allowance, he said, and on the day he died, he told him that the help was over for good.
He had just lowered it from $ 400 to $ 300.
& # 39; The free ride was coming to an end, & # 39; Ortner said, adding the murder: & # 39; was not a symptom of a psychosis, it was a symptom of a claim. & # 39;
Thomas Sr. (right) had gradually reduced his son's benefit, he said, and on the day he died, he told him that the help was over for good. Gilbert (left) shot his father, Thomas Sr., in his head in his Upper East Side Home in 2015
During the trial, which lasted five weeks, prosecutors regularly described Gilbert as a troubled young man, who had an easy life on a silver platter & # 39 ;.
Prosecutors accused Gilbert of finding his own way in life and thereby developing an irrational hatred of his father – despite the $ 1,000 weekly allowance on which he supported him for so many years
Gilbert Sr. had recently established a hedge fund, but was rejected for a $ 1.5 million loan to finance it.
Until that time Thomas Jr. had lived richly from his parents and brought the world about their happiness.
They paid his memberships to exclusive clubs in the city and the Hamptons, paid his rent on his Chelsea apartment, his Jeep and all the parking tickets he had made with it.
The defense claimed that he could not keep a job because he was schizophrenic and that his parents supported him.
His mother Shelley testified before the defense and said her son was mentally ill.
& # 39; Tommy was much sicker than we ever knew, & # 39; she said earlier this year.
It was Shelley who called 911. In her recorded telephone conversation, she told the operator when he was asked who shot her husband: & My son. He's crazy, but I didn't know he was that crazy.
& # 39; He shot him in the head. & # 39;
Gilbert Jr. used a 40-caliber Glock gun that he had driven to Ohio to buy it to perform the murder.
Tommy & # 39; s mother Shelley (left) testified before the defense and said her son was mentally ill
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