Slipknot confirmed for #GMM25!

South Stage headliner on Friday 20 June 2025!

Yesterday we announced Iron Maiden as our first headliner for #GMM25 and today we’re adding a second juggernaut with Slipknot. The American metal giants will conclude the action on the South Stage on Friday 20 June with a set list that focuses on their legendary self-titled debut. Fans can gear up for an unforgettable, intense experience as Slipknot underscores once again why they’ve been ruling the roost for so many years. 

Formed in 1995 in Des Moines, Slipknot are not just known for their iconic masks but also for their unique and unrivalled sound. Their eponymous debut from 1999 revolutionised the rock and metal world. This album full of raw emotions, intense energy and aggressive riffs is considered a genre milestone and kickstarted Slipknot’s ascent to global fame. Here comes the pain!

Tickets for GMM 2025 go on sale as from 10 a.m. on Saturday 30 November through Ticketmaster. Mastercard holders benefit from priority access to presale tickets [festival & VIP tickets only] between 10 a.m. on Thursday 28 November and 9 a.m. on Saturday 30 November. Go to priceless.com/music for full details. 

About GMM: Four days, five stages. Jaw-dropping headliners, emerging talent, furious blast beats and raging mosh pits. For the 28th time the crème de la crème of the international hard rock and metal scene will converge on Graspop Metal Meeting. Once again, Dessel will shake to its very foundations. Next year’s edition of the largest and most versatile hard rock and metal festival of the Benelux takes place from 19 through 22 June 2025. GMM 2025: the metal highlight of the year for every metalhead!

Stay metal!

GMM