The theme of the conference will be 4-manifolds. The conference will include 2 to 3 research talks per day, as well as several social and research activities. Important Information Location: Online; register to receive participation link via email Dates: June 7 - 11, 2021 Registration: Link to registration form Any recordings will be available at our Youtube channel: Link to Youtube Schedule and Speakers Confirmed speakers: Julian Chaidez Jen Hom Daniel Ruberman David Gabai Alexandra Kjuchukova Tadayuki Watanabe Robert Gompf Danica Kosanović Paul Wedrich Sherry Gong Peter Lambert-Cole Kristen Hendricks Ikshu Neithalath Schedule: Times below are in US Eastern Daylight Time (UTC-4). Click on the name of the speaker for the talk Title and Abstract. Acknowledgements We are grateful to the National Science Foundation for its generous support through grant DMS-1902670. This conference is organized by Akram Alishahi, David Gay, Joseph Hoisington, Peter Lambert-Cole, Gordana Matić, Michael Usher, Weiwei Wu, and Melissa Zhang.