This is exactly what the linked article said: > Garry’s List is structured as a 501(c)4 nonprofit, a tax designation that lets the group bankroll campaigns whi

This is exactly what the linked article said: > Garry’s List is structured as a 501(c)4 nonprofit, a tax designation that lets the group bankroll campaigns while affording donors a measure of secrecy they would not enjoy if giving directly. They are traditionally known as “dark-money” groups because they can spend on elections without revealing all their donors.