DIAGNOSIS Absolutely. The stand is removable, and the monitor has a standard VESA mount pattern, but there's a specific plastic cover you need to deal with first.
FIX Lay the monitor face down on a soft surface. Grip the stand neck and firmly pull it straight down and away from the monitor—it detaches with a firm tug. Now you'll see a rectangular plastic cover with four screw holes. This cover is held by four plastic clips. Use a flathead screwdriver to gently pry it off. Underneath is a 100mm x 100mm VESA mounting pattern. Use the screws that came with your monitor arm (usually M4 screws, 10-12mm length is safe). Don't use screws longer than 12mm or you risk damaging the internal panel.
IF THAT DIDN'T WORK If the plastic cover feels impossible to remove, you might have missed a step. Ensure the original stand is completely removed first. The cover should be the only thing left. The clips are tight; work your way around the edges slowly. Don't force it from one corner.
HEADS UP The monitor is pretty light (about 5.5 kg without the stand), so most arms will handle it fine. Just make sure your arm is rated for 100x100 VESA. After mounting, all the OSD buttons and the headphone jack on the back will still be accessible.