Stange Law Firm has added JAMIE McGAVIC, SARAH BARBARASH and RYAN SCHELLERT as associate attorneys.

Cornerstone Mortgage Inc. has added MARK ANDERSON as senior loan officer in the Creve Coeur office.

Renaissance Financial has welcomed GARY ORF as chief investment officer.

Dielmann Sotheby’s International Realty has added a mobile app that anyone can download to a smart phone. The Smarter Agent’s mobile real estate application allows consumers to view MLS listings any time.

Clayco Inc. has appointed MELISSA HUGHES as VP of talent management.

Kwame Building Group has added RON REUTHER as project control manager and DONALD RAY as facilities manager of the corporate office.

Payne Family Homes has added SHAWN ARTERBURN as VP of operations.

Mercy Children’s Hospital has named JEANNIE MOLLOHAN executive director.

Rehab Dynamics has added DAVID LASK, D.C., to provide chiropractic services and start a new ADHD Wellness program.

Villa Duchesne and Oak Hill School has welcomed VIVI KEEFER as varsity field hockey coach. 

Lewis, Rice & Fingersh L.C. has named TIMOTHY YEAGLIN member of the firm.

KIRK McDONALD has joined Argent Capital Management LLC as senior research analyst for quantitative research.

Contemporary Vision Center has opened in Manchester/Ballwin at 971 Brittany Parkway Drive.