Overview
- Stefanie Rock, 29, was struck and killed while jogging on Deerfield Road in Water Mill on Friday and was pronounced dead at the scene.
- Southampton Town police say the unidentified driver stayed, cooperated with officers, was taken to Southampton Hospital for evaluation and later released and authorities have not said whether criminality is suspected.
- Rock worked as an associate broker at Jones Lang LaSalle focusing on Manhattan office leasing after graduating from Vanderbilt in 2019 and was credited with deals including a 2024 full-floor lease for GlossGenius at 838 Broadway.
- Early reports differed on the exact time of the collision and no family or company spokespeople have provided on-the-record comments as police continue to gather facts.
- Investigators’ next steps include reconstructing the crash and reviewing medical and scene evidence, and the case is likely to determine whether charges are brought and provide closure for Rock’s family and colleagues.