David Ko

Calm is a leading mental health company on a mission to support everyone on every step of their mental health journey. Our flagship consumer app—ranked #1 in its category with over 180 million downloads and available in seven languages across nearly 190 countries—helps people sleep better, stress less, and live more mindfully through content and tools from experts and beloved celebrity voices. Since our launch, we’ve expanded our offerings with Calm Sleep, an app providing deeper, personalized sleep support, and Calm Health, an evidence-based digital solution offered through employers, health plans, and providers to expand access, boost benefits engagement, and drive positive health outcomes. Today, Calm supports more than 3,500 organizations and reaches over 26 million covered lives through Calm Health. Recognized as a TIME100 Most Influential Company and one of Fast Company’s Brands That Matter, Calm was co-founded by Alex Tew (Million Dollar Homepage) and Michael Acton Smith (Mind Candy, Moshi Monsters, Firebox).

Calm is a leading mental health company on a mission to support everyone on every step of their mental health journey. Our flagship consumer app—ranked #1 in its category with over 180 million downloads and available in seven languages across nearly 190 countries—helps people sleep better, stress less, and live more mindfully through content and tools from experts and beloved celebrity voices. Since our launch, we’ve expanded our offerings with Calm Sleep, an app providing deeper, personalized sleep support, and Calm Health, an evidence-based digital solution offered through employers, health plans, and providers to expand access, boost benefits engagement, and drive positive health outcomes. Today, Calm supports more than 3,500 organizations and reaches over 26 million covered lives through Calm Health. Recognized as a TIME100 Most Influential Company and one of Fast Company’s Brands That Matter, Calm was co-founded by Alex Tew (Million Dollar Homepage) and Michael Acton Smith (Mind Candy, Moshi Monsters, Firebox).

Castilleja is the only non-sectarian all-girls middle and high school in the San Francisco Bay Area. A college-preparatory school, we enroll girls in grades six through twelve. Situated on a six-acre campus in Palo Alto, Castilleja is accredited by the Western Association of Schools and Colleges and is a member of the National Association of Independent Schools, the National Coalition of Girls Schools, and the College Board.