Tool added director and photographer Danielle Levitt to its live action roster.

IRIS.TV named Zecca Lehn as a data scientist.

Rich Meiklejohn joined the Hootsuite leadership team as general manager of Asia Pacific.

Framestore Pictures added directors Anh Vu and Marcus Ubungen to its roster.

GRB Entertainment named Marielle Zuccarelli as chief operating officer.

Vidsys named Roberto Mandanas global director of strategic marketing.

Blue Sky Agency hired Ted Tagalakis as director of marketing science and digital/social media strategy.

Vevo added Colleen McCreary as chief people officer.

The American Cancer Society named Sharon Byers as chief development and marketing officer.

PatientPoint added Ginna Gentzen as vice president, client solutions, Chicago.