Exhibit 99.1 Professional Diversity Network, Inc. Announces Financial Results for the Quarter Ended March 31, 2024 Chicago, IL, May 15, 2024 (GLOBE NEWSWIRE) — Professional Diversity Network, Inc. (NASDAQ:IPDN), (“IPDN” or the “Company”), a global developer and operator of online and in-person networks that provides access to networking, training, educational and employment opportunities for diverse individuals, today announced its financial results for the quarter ended March 31, 2024. “Our first quarter s ...