March of Dimes named Chesterfield native Justin Kralemann as its new senior development manager in the greater St. Louis area. Kralemann will support fundraising efforts to reduce infant mortality, birth defects, and premature births through research and education.

Christina Longnecker has been named vice president of oncology services for Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine. Longnecker previously served in the position on an interim basis.

Tom Mackowiak has been named executive director of ACCESS Academies. He most recently served as vice president of the board. Mackowiak will oversee the administration and programs for the not-for-profit, which works to provide disadvantaged students access to quality education in the St. Louis area.

Wells Fargo Advisors has promoted Tim Kertz to St. Louis major market manager. Kertz, who has 19 years of financial services experience, formerly held the position of assistant St. Louis market manager.