Blethen, who helped cofound LTX in 1976, when he was 25, became the company’s president and chief executive officer twenty years later, in 1996. He received a bachelor’s degree in electrical engineering from Northeastern. Blethen lives in Dover with his wife, Pamela, and 12-year-old son, Zack. He also has two daughters, Christine, 25, and Andrea, 23. He was born and raised in Medway, Massachusetts.