Complex sentence: The combination of the 2 insurers would have created a new company with over 18,000 employees, dual-headquarters in both Pittsburgh and Philadelphia and an economic impact of over $4 billion throughout the Commonwealth of Pennsylvania.
Split into simpler sentences: The combination of these insurers would have created a new company with over 18,000 employees, with dual-headquarters in both Pittsburgh and Philadelphia. The new company would have had an economic impact of over $4 billion throughout the Commonwealth of Pennsylvania.