We are very pleased to announce the winners of this year's paper prizes: The 2017 Marjorie Grene Prize goes to Emily C. Parke (University of Auckland, NZ) for her paper "Experiments, Simulations, and Epistemic Privilege," originally presented at ISHSSPB 2013 in Montpellier, and subsequently published in Philosophy of Science 81 (2014): 516–536. The 2017 Werner Callebaut Prize was awarded to Lynn Chiu (University of Bordeaux, France) for her paper "The Birth of the Holobiont," originally presented at ISHSSPB 2015 in Montréal, and published in revised form in collaboration with Scott F. Gilbert as “The Birth of the Holobiont: Multi-Species Birthing Through Mutual Scaffolding and Niche Construction,” Biosemiotics 8 (2015): 191–210. For more details, please see the ISHSSPB webpage for the citations and information on the prizes. We are very grateful to all who submitted for consideration, and to the prize committee members.