Complex sentence: He received his Bachelor of Science degree in physics from Middlebury College in Vermont (where he joined Alpha Sigma Phi) in 1949 following which he joined the New York office of the investment bank Lazard Frères under André Meyer.
Split into simpler sentences: He received his Bachelor of Science degree in physics from Middlebury College in Vermont (where he joined Alpha Sigma Phi) in 1949. He joined the New York office of the investment bank Lazard Frères under André Meyer.