The family's attorney said the wrongful death lawsuit against the CC & Co. Dance Complex was dismissed.
Hailey was performing with CC & Co. dancers during the Nov. 19 parade when a truck towing a float malfunctioned.
The driver of the truck, 20-year-old Landen Glass, was heard yelling out of his window that he could not stop the vehicle. Parade watchers and officers rushed to the side of the truck, eventually bringing it to a stop.
However, by the time it stopped, the truck had already hit Hailey. She was rushed to the hospital but could not be saved.
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Records show Glass had been charged numerous times for vehicle violations in Virginia. He also faced misdemeanor charges related to the crash that killed Hailey.
The accident resulted in legislators making changes including the "Shine Like Hailey Parade Safety Act," which calls for all parades run by municipalities of more than 35,000 people to require inspections on vehicles within a week of the event.
Several other defendants, including Glass and the City of Raleigh, are still named in the lawsuit.
In a statement to ABC11, CC &Co. Dance Complex said: "Our deepest sympathies remain with the Brooks family. We are grateful to have resolved the legal matters surrounding this tragic situation."
ABC11 has reached out to the family's attorney for comment.