Direct Digital Holdings, Inc. (Nasdaq: DRCT) (“Direct Digital”), a leading advertising and marketing technology holding group, announced financial results for the fourth quarter and fiscal year ended December 31, 2021. Chairman and Chief Executive Officer Mark Walker said, “2021 was an incredible year for us, as we continued to execute on our vision of building a world-class buy- and sell-side advertising platform for middle-market clients.  In 2021 we doubled our revenue through organic growth and the integration of Orange142...