It's a sad day for their fans.
Hit 90s rock band announces they're breaking up after 27 years together- and fans are devastated
Sum 41 - Wikipedia
Punk band Sum 41 says it's breaking up after 27 years together : NPR
Pop-Punk Icons Sum 41 Announce Break Up
SUM 41's DAVE BAKSH Reveals His Short Battle With Cancer Earlier This Year, Offers Positive Message
Punk band Sum 41 says it's breaking up after 27 years together : NPR
Sum 41 SPLIT after almost three decades as fans thank them for 'best songs' - Mirror Online
Sum 41 Announces BREAK UP!
NEW SINGLE RISE UP (Sum 41) blink-182 Fan reacts
Sum 41 fans
Sum 41 Announce That They Are Breaking Up
Sum 41's Deryck Whibley talks 'Order in Decline,' anniversary shows and upcoming tour