Promotions and appointments of area executives

DAWN HOLIDAY, of Jackson

Walker, has joined the Texas law firm as a partner in the trial and appellate litigation practice.

ALEX DE LA CRUZ, TDECU, has joined the company as senior vice president, chief growth, strategy and marketing officer.

JESSICA FLORES, Gainsborough Waste and Texas Outhouse, has joined the companies as safety manager.

PATRICIA QUINTERO GARCIA, Houston Symphony

violinist, has been appointed to the organization’s Community Embedded Musicians initiative.

GINA M. DELELLIS, Lockwood, Andrews & Newnam, has joined the planning, engineering and program management firm as human resources manager.

ANDREW NGUYEN, CMI

Brokerage, has been awarded the Certified Commercial Investment Member designation.

ALEXA SANGBIN THOMSON, Houston Symphony violist, has been appointed to the organization’s Community Embedded Musicians initiative.

WILLIAM HUDGENS, MaloneBailey, has joined the Houstonbased public accounting firm as audit manager.

JORGE DIAZ, Platform Partners, has joined the company as an operating partner, working with portfolio companies to help them grow.

BRANDON HARTSAW,

Questco, has been appointed chief operating officer of the outsourced human resources solutions provider.

CRYSTAL GORDON, Era

Group, has been appointed as the global helicopter operator’s senior vice president, general counsel and chief administrative officer.

AMY NICHOLSON, HOK, has joined the firm’s interiors practice in Houston as director of interiors.

MICHAEL HANLEY, LyondellBasell, has joined the plastics, chemicals and refining company’s board of directors.

TYLER CHOYKE, MarineMax, has been named the recreational boat and yacht retailer’s district president of Texas.

JOHN P. CAHILL JR., Lanza

Law Firm, has joined the civil trial law firm as a partner, where he concentrates his practice on construction disputes.

MICKI WASHINGTON,

HOK, has joined the firm’s interiors practice as regional leader of WorkPlace for HOK’s Gulf Coast region.

KARINA SWETTE, of Oliver

Wyman, has been named a partner in Houston and Dallas at the global management consulting firm.

LEE KAPLAN, Compass, has joined the firm’s new Houston office as Realtor associate.