The fourth Emerging Researchers in Exoplanet Science symposium (ERES IV) will be held at the Pennsylvania State University on June 21st and 22nd, 2018. This meeting prioritizes research presentations by and for early career scientists working in exoplanet science and provides substantial opportunities for networking among peers. ERES is held annually on a rotating basis between partner institutions. The first ERES was held at Penn State in 2015, ERES II at Cornell University in 2016, and ERESIII at Yale University in 2017.