Across industries, boards increasingly recognise the importance of collaborating on climate change to avoid first-mover disadvantages, address market failure and externalities and create sector-wide change. Regulation, like the EU Corporate Sustainability Due Diligence Directive, may even require sustainability cooperation. At the same time, however, agreements between competitors can usher in antitrust concerns, and recently global financial alliances focused on addressing climate change have faced challenges due to alleged breaches of competition law. In fact, this webinar illustrated how these alliances and similar sustainability agreements likely do not breach antitrust law if they stay within proper guardrails, and regulators in the EU and UK, and a few other countries around the world, have begun to indicate approval of climate collaborations.