Claire Cook

Claire Cook is an accomplished marketing and communications professional with extensive experience across various sectors. Currently serving as the Vice President of Brand Communications at Altana since September 2025, Claire previously held multiple roles at Atlassian, including Head of Brand Marketing and Director of Brand Marketing & Management, where responsibilities included overseeing brand strategy, campaign planning, and sales enablement. Additionally, Claire worked as a Sustainability Marketing Advisor for the Yale Center for Business and the Environment, focusing on strategic brand positioning and social media marketing. Claire has also held significant positions at Girls Who Code, managing brand marketing and communications for key programs and products, and working as a Yoga Instructor at Core Power Yoga. Claire holds an Executive MBA in Sustainability from the Yale School of Management and a BA in Film Studies and Theater from Connecticut College.