Hess (HES) shareholders have approved the company's $53 billion merger with Chevron (CVX). But one issue still needs to be resolved. ExxonMobil (XOM) is claiming a right of first refusal over assets in Guyana, which it shares ownership of with Hess and China's CNOOC.

Yahoo Finance's Alexis Keenan breaks down the fight and what to watch from ExxonMobil's shareholder meeting later Wednesday.

For more expert insight and the latest market action, click here to watch this full episode of Catalysts. Be sure to check out what ExxonMobil CEO Darren Woods told Yahoo Finance about the Guyana assets here.

This post was written by Stephanie Mikulich.