Who Is John Castic? Goldman Sachs Analyst Missing Since NYC Concert

John Castic, a Goldman Sachs employee, has seemingly vanished after leaving a concert in New York City over the weekend, according to police.

Castic, 27, was last seen at about 3 a.m. July 29 outside the Brooklyn Mirage Night Club venue at 140 Stewart Avenue, New York, police told Newsweek in a press release.

Missing person posters of Castic have begun to circulate on social media about his disappearance.

One missing-person poster said Castic was at the Brooklyn Mirage to see a performance by the electronic duo Zeds Dead the night he vanished.

Missing Person, John Castic
A missing-person poster has been shared of 27-year-old, John Castic, who was last seen leaving the Brooklyn Mirage on July 29, 2023. Castic has been a Goldman Sachs employee for over a year and has... Courtesy of 5th Precinct

The police described Castic as being about 6-foot-3 and 180 pounds. However, some posters differ on his height, saying he is 6-foot-1.

In one missing-person poster he is described as having a slim build and was last seen wearing a navy and white button-down floral shirt. Another poster added that Castic is white with dirty blond hair and blue eyes.

Castic has been working as a senior analyst at Goldman Sachs since last August and graduated from DePaul University in 2020, according to his LinkedIn profile.

"Goldman Sachs' Office of Global Security is working closely with the NYPD to help locate John," a Goldman Sachs spokesperson told Newsweek. "We are in touch with his family during this difficult time and the investigation remains ongoing."

Sara Kostecka, who claimed to be his "best friend" on Facebook, shared multiple posts about his disappearance and said she had heard rumors of "creepy people" operating near the venue.

"Any information would be greatly appreciated, as well as sharing this to anyone in NYC that might have seen him," she wrote on a Facebook post on Monday. "I've heard rumors from people about being asked to hop in a taxi/ cab from some creepy people near the Mirage - reminder to stay safe and check in on your friends. I'm supposed to walk with him in my brothers wedding next week.. we just wanna find John."

Jonah Shales, another friend of Castic, spoke to Fox News Digital after his disappearance and emphasized his concern. He said that Castic's phone died at some point after he left the venue and has not been on since.

"We're absolutely very worried about him. No one has had any contact with him," Shales said.

Police have said anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).

The public can also submit their tips by logging onto the CrimeStoppers website at https://crimestoppers.nypdonline.org/, or on Twitter @NYPDTips. Police also noted all calls are confidential.

Update 8/1/23, 11:25 a.m. ET: This article was updated with comment from a Goldman Sachs spokesperson.

Uncommon Knowledge

Newsweek is committed to challenging conventional wisdom and finding connections in the search for common ground.

Newsweek is committed to challenging conventional wisdom and finding connections in the search for common ground.

About the writer


Gerrard Kaonga is a Newsweek U.S. News Reporter and is based in London, U.K. His focus is reporting on U.S. ... Read more

To read how Newsweek uses AI as a newsroom tool, Click here.

Newsweek cover
  • Newsweek magazine delivered to your door
  • Newsweek Voices: Diverse audio opinions
  • Enjoy ad-free browsing on Newsweek.com
  • Comment on articles
  • Newsweek app updates on-the-go
Newsweek cover
  • Newsweek Voices: Diverse audio opinions
  • Enjoy ad-free browsing on Newsweek.com
  • Comment on articles
  • Newsweek app updates on-the-go