Alerus hired David Van Slyke as a Phoenix-based senior vice president and commercial banker. .Van Slyke brings more than 20 years of financial experience to the Grand Forks, N.D.-based bank, most recently as vice president of commercial banking at Bankers Trust in Phoenix. Van Slyke has a bachelor’s degree in finance from the W.P. Carey School of Business at Arizona State University, Tempe.