Emily Withrow joins Quartz as Bot Studio editor, and Jessanne Collins joins Quartz as deputy push editor.

Rock Candy Media has promoted three to partner: Sam Kimelman, Scott Mise and Kyle Gregory.

Annette Sally joined 22squared as executive vice president and executive director of account management.

Vivint Solar hired Maggie Heile as vice president of marketing.

Nihal Fayad joined PebblePost as vice president, legal.

Y&R launched a global social impact practice, Y&R Inspire Change, geared towards both nonprofit organizations and brands incorporating social purpose strategies. The new practice is led by Shelley Diamond, Y&R’s chief client officer, and begins with two current agency clients, UNCF and Special Olympics.

POSSIBLE Mobile hired Jeff Hasen as mobile strategist.

Myriam Vergne joins Euronews as vice president of sales, EMEA.

The Mars Agency hired Suzanna Bierwirth as chief creative officer and promoted Jeff Stocker to global chief creative officer.

Telmar hired Marcia Swart as deputy managing director for Africa.