Siobhan Nolan Mangini, President & Chief Financial Officer Castlight Health was a San Francisco–based healthcare navigation company.

Employees of companies that had purchased subscriptions got access to the Castlight platform.

[8] The company claimed to have grown to work with "over 260 customers covering 10 million lives" on the platform.

[9] On the 5th of January 2022 it was announced that Castlight would be acquired by Vera Whole Health for $370 million USD.

Vera launched a tender offer of $2.05 for all outstanding Class A and B shares.