Is this bonus some sort of signing bonus for which there is no risk of forfeiture but is paid out to you over several years. If so that's what the amount in box 11 represents. However, an "annual bonus" would not seem to be anything like that and would be improper to be present in box 11.
An amount properly reported in box 11 represents an amount on which Social Security and Medicare taxes were paid in an earlier year and would be excluded from boxes 3 and 5. Anything earned in the current year and paid to you must be included in boxes 3 and 5 and should not be present in box 11.
