. . . Amparo Y. Guerra has joined Winstead in Houston as of counsel in the commercial litigation practice group. Kenneth L. Anderson has joined as an associate with the finance and banking practice group. David W. Jackson has joined the firm in The Woodlands as an associate with the taxation and employee benefits and private business practice.

. . . Andrew Ostapko has joined Hiersche, Hayward, Drakeley and Urbach in Addison as an associate.