Auctions and Mechanism Design.- Improved Two Sample Revenue Guarantees via Mixed-Integer Linear Programming.- The Price of Stability of Envy-Free Equilibria in Multi-Buyer Sequential Auctions.- Auctions with Interdependence and SOS: Improved Approximation.- Approximate Mechanism Design for Distributed Facility Location.- Prior-Free Clock Auctions for Bidders with Interdependent Values.- Incentive Compatible Mechanism for Influential Agent Selection.- Computational Aspects of Games.- On Tightness of the Tsaknakis-Spirakis Algorithm for Approximate Nash Equilibrium.- Prophet Inequality with Competing Agents.- Lower Bounds for the Query Complexity of Equilibria in Lipschitz Games- Gerrymandering on graphs: Computational complexity and parameterized algorithms.- Game theory on the blockchain: a model for games with smart contracts.- Algorithmic Challenges in Information Design XVII.- On the Complexity of Nucleolus Computation for Bipartite b-Matching Games.- Pure Nash Equilibria in a Generalization of Congestion Games Allowing Resource Failures.- Markets and Matchings.- On (Coalitional) Exchange-Stable Matching.- Optimal Revenue Guarantees for Pricing in Large Markets.- Approximate Competitive Equilibrium with Generic Budget.- Cost Sharing in Two-Sided Markets.- The Three-Dimensional Stable Roommates Problem with Additively Separable Preferences.- Descending the Stable Matching Lattice: How many Strategic Agents are required to turn Pessimality to Optimality?.- Social Choice and Cooperative Games.- Metric-Distortion Bounds under Limited Information.- Hedonic Expertise Games.- When Dividing Mixed Manna is Easier than Dividing Goods: Competitive Equilibria with a Constant Number of Chores.- Computing Fair and Efficient Allocations with Few Utility Values.- An Approval-Based Model for Single-Step Liquid Democracy.- Two Birds With One Stone: Fairness and Welfare via Transfers.- Pirates in Wonderland: Liquid Democracy has Bicriteria Guarantees.- Abstracts.- On Reward Sharing in Blockchain Mining Pools.- On Submodular Prophet Inequalities and Correlation Gap.- Vote Delegation and Misbehavio.