WASHINGTON, May 29, 2026 (GLOBE NEWSWIRE) -- Public Policy Holding Company, Inc. ("PPHC" or "the Company") (Nasdaq: PPHC), a leading global provider of strategic communications services, today announced management’s participation during Stifel’s Ninth Annual Boston Cross Sector 1x1 Conference in Boston, MA being held from Tuesday, June 2 - Wednesday, June 3, 2026. Stewart Hall, Chief Executive Officer, and Matthew Mazzanti, Chief Administrative Officer, will be available for 1x1 meetings with investors thro ...