This should do the trick:

-[^-]*-[^-]*$

Helps to read the pattern backwards to understand the logic:

1. Starting from the end of the input ($)
2. Match any number of any characters other than a hyphen ([^-]*)
3. Then match the hyphen (-)
4. Repeat 2 & 3 to match the next words and second hyphen

Edit: I noticed the part after the third hyphen is "Optional Name". This pattern doesn't work correctly if the third hyphen isn't there. 

Here's another option that works the other direction:

^(?:[^-]*-[^-]*)(.*)

1. Starting from the beginning of the input (^)
2. In a non-capture group ((?:)), match everything up to the second hyphen ([^-]*-[^-]*)
3. Then in a capture group, match everything remaining (.*)