As of January, his family:
https://nypost.com/2023/01/06/brian-sicknicks-family-suing-donald-trump-for-wrongful-death/
The estate of Brian Sicknick, represented by his long-time partner Sandra Garza, is seeking $10 million in damages from all three defendants in the suit filed in US District Court.
[...]
In addition to wrongful death, the family has accused Trump of violating Sicknick’s civil rights, assault and negligence.