BRIEFCASE.

* ACCOUNTING

Chris Frederick was named senior manager of the Bellevue office of Matson, Driscoll & Damico LLP.

* ADVERTISING, MARKETING AND PUBLIC RELATIONS

The following joined Horton Lantz Marocco in Seattle: Jason Hoppe, director of electronic production; Dawn Goode, electronic production assistant; Julie Sargent, office manager; Heather Bruce, receptionist.

Angel Straub joined Market Trends Research in Seattle as sensory science research manager.

Daniel Sloan joined Vander Houwen Public Relations in Bellevue as public relations intern.

Steve Johnston joined McCann-Erickson Seattle as creative director.

* ARTS

Stephen Agostini was appointed chief financial officer at the Seattle Symphony.

* BIOMEDICAL

Thomas Wight joined The Hope Heart Institute in Seattle as …