Arnav Sharma Missing Person Alert: Search Underway for Mountain House 18-Year-Old

A search is underway for Arnav Sharma, an 18-year-old from Mountain House who was reportedly last seen in the Livermore area after visiting Las Positas College.

According to information shared by a person identifying themselves as a friend of Arnav’s family, the teenager had been visiting a friend at Las Positas College on Wednesday, September 16, and planned to use public transportation to return to Mountain House. His family reportedly last spoke with him at around 12:30 p.m. that day.

Key Details

Category Reported Information
Missing Person Arnav Sharma
Age 18
Home Community Mountain House
Last Seen Las Positas College, Livermore
Last Contact September 16, 2026, around 12:30 p.m.
Height Approximately 6 feet
Weight Approximately 140 pounds
Hair Black
Eyes Black
Clothing Blue hoodie, black pants, red shoes
Possible Later Location Pleasanton, near Johnston Drive/Owen Drive
Police Livermore Police Department
Tip Line 925-371-4900

The same community report stated that Arnav’s last phone ping was reportedly detected in Pleasanton at approximately 1:47 p.m., near Johnston Drive and Owen Drive. Police were said to have been notified about the case. These details come from the community appeal and have not been independently confirmed through an official police release located in the available search results.

Livermore Police Department’s official website lists 925-371-4900 as its telephone number. Anyone with potentially useful information should contact the department directly and provide investigators with whatever details they have.

The available missing-person information does not establish what happened after Arnav was last in contact with his family. There is currently no verified information in the sources reviewed indicating where he may be or what circumstances may have contributed to his disappearance.

Family, friends and community members are asking people in Mountain House, Livermore, Pleasanton and surrounding areas to remain alert and share the missing-person information responsibly.

Anyone who believes they may have information about Arnav’s whereabouts should contact law enforcement rather than relying on social-media speculation.