
A view of the downtown Denver skyline. (Courtesy Guerilla Capturing)
Woof Pet must be wagging its tail.
The Denver-based pet toy business is the third fastest-growing privately held company in the country, according to the Inc. 5000. Woof, founded by Daniel Haarburger six years ago, reported that its revenue increased 25,621% over the past three years.
The business was among 117 Colorado firms on the magazine’s list, which was released last month and outlines the top 5000 burgeoning, nonpublic businesses across the country. About 60% of the Colorado firms — 70 of them — said they’re based in the Denver metropolitan area, with 10 more firms listing Boulder as their home base.
Nabbing Colorado’s second spot, at No. 197, was Birck Engineering, an industrial engineering firm based in Littleton. It reported nearly 2,000% growth from three years prior.
To make it onto the Inc. 5000 list, a business must have made at least $100,000 in revenue in 2021 and $2 million in 2024. Businesses must apply, which costs between $345 and $595, and provide financial statements. Those that make the list are ranked by their percentage of revenue growth between 2021 and 2024.
Along with Woof and Birck, four other Colorado companies placed in the top 500 of Inc.’s list.
Ragab Law Firm (207), based in Denver, reported 1,860% growth. The company’s services include civil litigation and criminal law, according to its bio. It is led by Sami Ragab.
The Ambitious Exec (242), based in Boulder, reported 1,591% growth. The company is a “career accelerator helping directors, VPs, and C-suite execs get hired into better roles faster,” according to its bio. It is led by James Whittaker.
Todyl (335), based in Denver, reported 1,179% growth. The company is a “security platform empowering IT professionals with tools and automation to defend against threats,” according to its bio. It is led by John Nellen.
Cosmo (453), based in Denver, reported 905% growth. It is a “company connecting families with software and devices for kids before they reach cell phone age,” according to its bio. It is led by Russell York.