![Linda Yaccarino](https://www.seeher.com/wp-content/uploads/2020/12/approved-linda-yaccarino-backstage-1.jpg)
NBCUniversal said it would hold a one-hour streaming-video presentation for Madison Avenue on May 11 to discuss the advertising marketplace, the first of the big U.S. media companies to commit to a formal conversation with advertisers in the wake of the spread of the coronavirus pandemic.