Abbreviate Gibson Dunn as GD

I personally wouldn’t - the firm never uses this abbreviation and only refers to itself as it’s full name on its website.

If you are trying to do this because of word count m, this thread might help to show where you can get other words back:

Thread 'How to get your applications within their word limits'
https://www.thecorporatelawacademy....r-applications-within-their-word-limits.3701/
You are simply a rock star and your selfless contribution to rookie applicants deserves a standing ovation !