A Binghamton, N.Y., native, Ms. Chiesi began her Wall Street career in the late 1980s. She later landed at New Castle Funds, a hedge fund that was spun off from Bear Stearns. Ms. Chiesi, 45, became known on Wall Street for her colorful personality and robust rolodex. Her specialty was the technology world, in which she built a network of sources whom she prodded for corporate secrets. Her tipsters included Robert W. Moffat Jr., a former senior executive at I.B.M., who has since pleaded guilty to participating in the scheme. Along with the 30 month prison term, Ms. Chiesi was also sentenced to two years of supervised release, 250 hours of community service, $25,000 fine, and mandatory mental health and alcohol treatment.