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| Dimitri Houtart |
Syngenta Group, an agricultural technology company that operates in over 100 countries, appoints Dimitri Houtart as head of external communications. Houtart joins Syngenta after more than two decades at the BBC, where he most recently served as rural affairs champion and executive editor for rural affairs, environment, food and natural history. He has also sat on the board of King Charles’ responsible business network. Houtart will oversee all aspects of external communications for the Group, including media relations, social media and digital media. Syngenta has also hired Alison Tudor-Ackroyd, most recently a director on the internation communications team for Chinese e-commerce company Alibaba Group, as head of digital and social media.
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| Della Sweetman |
FleishmanHillard promotes chief business development officer Della Sweetman to president, Americas and chief strategy officer, effective immediately. Sweetman has been with the agency since 2003, in positions including general manager, Southern California. In her position she will be responsible for the performance of the agency's largest region and for driving enterprise-wide business transformation. She will report to J.J. Carter, who was promoted to FleishmanHillard president and chief executive officer on October 1. "She understands our agency's unique strengths and brings operational rigor and growth experience. Della has proven effective in executing change within our organization, which has elevated our work and improved our competitiveness," said Carter.
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| Tina Vaz |
The Solomon R. Guggenheim Museum and Foundation brings on Tina Vaz as deputy director, chief brand and communications officer, a newly created position. Vaz previously served as the Guggenheim’s deputy director, global communications from 2015 to 2019. She has also been head of Open Arts, Meta’s in-house art team. Vaz’s responsibilities in her post will include communications, marketing, design, digital, brand coordination external affairs, and cross-functional collaboration on audience experience at Guggenheim New York. She will also oversee institutional messaging and brand strategy for the Guggenheim international constellation of museums. “Tina’s proven track record of well-considered risk-taking, skill as a cultural connector, and deep respect for the Guggenheim’s mission will strengthen our resonance in New York and help make the most of our constellation as a uniquely international platform,” said Guggenheim Museum and Foundation director and CEO Mariët Westermann.
HUNTER promotes Gigi García Russo to president and Michael Lamp to chief digital & transformation officer.... Cars.com Inc. a car-shopping marketplace, names Sarah Kettler CMO, effective June 15...The Trade Desk, an advertising tech company, appoints Sarah Gavin as CMO and EVP.
Brittany Sullivan, who held the senior VP-executive director of marketing post at Golin, has moved to Burson.
Codeword brings on Melody Brue and Jess Graham as part of a push to bolster its capabilities in market intelligence and commercial strategy... Havas Edge, which specializes in data-driven media, creative and customer acquisition strategies, for health, tech, consumer, retail and financial brands, promotes Pam Caputo to EVP, health media... Rezolve Ai, the London-based developer of Brain Suite, an enterprise AI platform purpose-built for agentic commerce, appoints Michele Fisher as CMO.
Jamie Dowd, who was most recently president of the health practice in the Americas at Weber Shandwick, comes on board at Allison Worldwide as global president, health + wellness, effective June 22.
Burson is bringing on Hanover managing director, Middle East Jonty Summers as head of corporate affairs in Dubai at the end of June... Ridgepost Capital, which had over $45 billion in assets under management as of March 31, names Brian McKenna VP, investor relations, effective June 15... The Center for AI Safety appoints Rochelle Nadhiri as head of public engagement. 
