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| Nina Dater |
Summit Strategy Group adds Nina Dater to its Washington, D.C. office as public affairs director. Dater joins Summit from Zeno Group, where she advised clients across industries including sustainability, chemicals, and consumer packaged goods regulation. Before that, she was an account manager at Red Flag Consulting, supporting U.S. and international clients on public affairs and digital media campaigns. “Nina’s experience in public affairs and issues management, combined with her presence in D.C., enhances our ability to provide on-the-ground support for clients navigating policy and reputational challenges—complementing the work of our team in Sacramento and across California,” said Summit Strategy Group founder and CEO Michael Law.
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| Diana Arinovitch |
Relevance International, which works with real estate, hospitality, design and luxury lifestyle clients, appoints Diana Arinovich director of paid media and advertising. Arinovich was most recently digital lead of the affiliate team at The Corcoran Group. While working at Lorelli, she developed marketing strategies for high-profile real estate and cultural projects with SL Green and Empire State Realty Trust, including the Empire State Building. Based in the agency’s New York headquarters, Arinovich will spearhead its global paid media strategy and lead-generation initiatives across offices in New York, London, Los Angeles and Dubai. “Diana brings a rare combination of strategic vision, digital expertise, and hands-on experience in lead generation and paid media,” said Relevance International founder and CEO Suzanne Rosnowski.
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| (L-R) Tashni-Ann Dubroy, Pilar Frank O'Leary, Wendell Pritchett |
DGA Group adds Tashni-Ann Dubroy and Pilar Frank O’Leary as senior advisors in its Washington, D.C. office and brings on Wendell Pritchett as a senior advisor, based in Philadelphia. All three will be working as part of the firm’s social impact offering. Dubroy has previously served as EVP and COO Executive Vice President and president of Shaw University. O’Leary has advised leading global companies, philanthropic institutions, and international organizations on sustainability and partnership strategies. Pritchett most recently served as interim president of the University of Pennsylvania. “With Tashni, Pilar and Wendell joining our team, we are adding extraordinary depth of expertise across higher education, social impact and public policy,” said Jonathan Kaplan, partner and lead of the firm’s social impact sector offering. “Their perspectives will strengthen the way we help clients drive measurable impact and lasting change.”
Finn Partners has named Fahlgren Mortine veteran Marty McDonald as managing partner and head of its new Columbus office.
The Next Solutions Group names Michelle Agnew as VP, reputation and issues management. Agnew joins NSG from The Coca-Cola Company, where she was director of strategic communications... Nebius, which works with startups and enterprises building AI products, agents and services, appoints Lindsey Irvine as CMO... Zeta Global, an intelligent AI infrastructure company, names Leah Pope CMO and Candace Dean chief communications officer.
SiriusXM recruits Paramount Pictures EVP, global communications Jenny Tartikoff to serve as SVP and head of communications, effective August 10.
West of Fairfax, which is in Los Angeles, appoints Scott Mallone as president. Mallone joins the agency from SHFT Labs... Codeword ups Brandon Carter to SVP, head of strategy... JOTO PR Disruptors names Nick Westcott head of establishment, working to improve coordination across departments, and helping each part of the agency operate with greater clarity, consistency and readiness for scale. 
Sotheby’s brings on Christie’s global head of communications Natasha Le Bel to serve as chief communications officer.
