No, the cost basis of long term incentives is never zero, that I know of. Equatex is an employee share plan administration company. This indicates to me that the 1099-B was for shares of stock acquired via some sort of employee stock plan (options, ESPP, RSU, Restricted Stock). I can't say for sure, but the ** probably indicates missing cost basis. You should contact Equatex and/or your employer to get more information on the cost basis.