David W. Mattern, a financial consultant in the Lawrence office of A.G. Edwards & Sons Inc., has been named an associate vice president-investments for the St. Louis-based national brokerage firm.

Mattern has been working with A.G. Edwards since 2001.

A.G. Edwards and its affiliates employ more than 6,600 financial consultants in more than 700 offices nationwide and two in Europe.

For more information, go to www.agedwards.com.