Cossette adds senior strategist

Kate Gaudreault has joined Cossette in a senior strategist role, based out of Montreal.

Prior to this month’s move, Gaudreault was at Havas Creative Canada for 4½ years, starting as a strategist in March 2022 before moving into a senior strategist position this January.

While at Havas, Gaudreault supported marketing work for Oîkos, Activia, Two Good and Danino for Danone, Boursin, La Vache qui rit, Babybel, and GogoSqueez for Groupe Bel, along with the Montreal Youth Refuge, among others.

Before joining Havas, Gaudreault was a strategist at Substance, where she supported brands including Saputo, Jean Coutu, Dairy Farmers of Canada, Brunet, MEC and others.

72andSunny Toronto creates head of production position

Shelby (Spigelman) Altbaum has joined 72andSunny as head of production, a newly created title at the agency’s Toronto office.

In the role, Altbaum is reporting to 72andSunny’s global chief production officer, Lora Schulson. Prior to last month’s move, Altbaum had been the head of production at DonerNorth since April 2025.

She was previously director of broadcast production for more than six years at Rethink, where she led a team of 15 producers and contributed to work for the likes of IKEA, Molson Canadian, Scotiabank, Scene+, Kraft Heinz and WestJet.

Earlier in her career, Altbaum worked for seven years at J Walter Thompson under the titles of senior broadcast producer and associate head of integrated broadcast.

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