Personnel: Tarek Mansour at Kalshi (Prediction Market) (Co-founder & CEO)

NoteThe source confirms all key fields in the record: (1) Person: Tarek Mansour is named as a founder; (2) Organization: Kalshi (Prediction Market) is the subject; (3) Role: The source identifies him as a co-founder (along with Luana Lopes Lara), and multiple references (Forbes citations) identify him as 'Cofounder & CEO'; (4) Start Date: The company was founded in 2018, matching the claimed startDate. The source explicitly states 'In 2018, Kalshi was established by Tarek Mansour and Luana Lopes Lara' and lists him in the infobox as a founder with the company founded in 2018.