According to this advisory from SoundExchange, artists that haven’t registered ‘may’ start surrendering royalties by Monday, October 15th, specifically for those collected three or more years ago.
“The following is a list of artists who have payable digital performance royalties from SoundExchange that have not yet been claimed.
The list is organized in alphabetical order and is searchable by artist name. If your name appears on the list, please register as soon as possible to receive royalties due to you.
Even if your name is not on the list, we encourage all performers on sound recordings to register, especially those who have recordings played on satellite, internet or cable radio stations.
Register by Oct. 15 as you may risk losing any royalties collected three (3) or more years ago by SoundExchange.
SoundExchange is authorized by law to release older unclaimed royalties to offset our costs and distribute proportionally to those we already pay. We have repeatedly held off on doing this, but we need your help to spread the word and get recording artists and record labels to register.
Note: Those names on the list with an asterisk (*) are entities where, for example, one or more band members have registered, but a band member may have not yet registered with SoundExchange. Or, the account may not currently be payable for some reason.
For more information on this initiative, read our FAQ. Learn more about our efforts to reach and register artists and labels.
For questions, please call or email SoundExchange Customer Care Department at 202-640-5858, or firstname.lastname@example.org.”