BridgeTower Media, which operates business newspapers across the country, had acquired ColoradoBiz for an undisclosed amount.

Founded in 1973, ColoradoBiz is the largest business publication in Colorado. It has a monthly print magazine and a website.

“Business is booming in Colorado, and we see an opportunity to accelerate growth in ColoradoBiz through this acquisition by leveraging the power of BridgeTower Media’s audience platform and best-in-class capabilities,” said BridgeTower Media President and CEO Hal Cohen in a statement.

ColoradoBiz has been owned by Denver-based Wiesner Media since 1986, when it was called Colorado Business. It was renamed in 1999.

BridgeTower Media is a portfolio company of Transom Capital Group, a private equity firm. Its publications include the Charleston Regional Business Journal, Finance & Commerce in Minneapolis, the Idaho Business Review, Long Island Business News and the Rochester Business Journal.