What happened to the transgressor of the unspeakable word in anthem?

In Ayn Rand's "Anthem," the transgressor of the unspeakable Word, who is discovered to have spoken the Word "I," is punished by being executed. This act represents the ultimate violation of the collectivist society's strict rules against individualism and self-identity. The protagonist, Equality 7-2521, witnesses this punishment and becomes increasingly aware of the oppressive nature of his society. Ultimately, this event fuels his desire to embrace individuality and freedom.