Seattle-based coffeehouse giant Starbucks Coffee Co has revealed in a communique that yesterday [Wednesday] marked its 10th anniversary as a publicly traded company. Since its initial public offering (IPO) in 1992, Starbucks has reported a 120 months of consecutive positive comparable store sales growth (company-operated stores open for at least 13 months). In 1991, the company launched a stock option programme for all eligible part-time and full-time employees.