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Sue Dunn has retired from Donor Alliance as chief executive officer. Jennifer Prinz replaces her as CEO.
David Hammel, principal and technical partner with Barker Rinker Seacat Architecture, has retired.
Natty Zola, managing director of TechStars, is leaving the firm to work on his own venture firm.
Al Lindeman is senior vice president for SVN | Denver Commercial.
Amy Davies is chief operating officer with Denver Metro Association Realtors. She is a graduate of Casper College.
Kendra Briggs is president of Fairmont Cemetery. She had been vice president.
David McCullough has been named chief technology officer for Akerna Corp. He had been executive vice president of product & engineering.