Do you mean Box 12? Per the IRS, Code V in Box 12 is:
V—Income from exercise of nonstatutory stock option(s) (included in boxes 1, 3 (up to social security wage base), and 5). See Pub. 525, Taxable and Nontaxable Income, for reporting requirements.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
