Complex sentence: He was President and Founder of M. Goldseker Real Estate Company, a Baltimore-based real-estate brokerage and services company, and is the founder of the Morris Goldseker Foundation.
Split into simpler sentences: He was President and Founder of M. Goldseker Real Estate Company, which was a Baltimore-based real-estate brokerage and services company. Goldseker is also the founder of the Morris Goldseker Foundation.