A former fundraiser for New York City Mayor Bill de Blasio was sentenced on Monday to four years in prison for his role in a bribery scheme involving high-ranking New York Police Department officials.

A Manhattan federal jury found Jeremy Reichberg guilty in January on four of five counts of conspiracy, bribery and obstruction of justice. During the two-month trial, federal prosecutors accused Mr. Reichberg, a Brooklyn businessman, of lavishing high-ranking officers with gifts and trips to Israel and Las Vegas in exchange...