The lawsuit, filed on June 18, 2026, targets the period between September 12, 2025, and May 12, 2026. Plaintiffs allege that Black Rock Coffee executives touted the ability to increase store density with minimal sales transfer, despite internal data suggesting that new locations were actively siphoning traffic from high-volume sites. The complaint suggests that management withheld these headwinds to maintain aggressive growth projections, only acknowledging the issue during the May 12, 2026, earnings report.

Since the IPO, the company's stock has faced a sharp downturn, falling to $7.72—a decline of over 61% from its initial offering price. Reed Kathrein, a partner at Hagens Berman, stated that the firm is investigating when leadership knew that their strategy was eroding revenue and why that information remained undisclosed to the public. Investors who purchased stock tied to the September 2025 IPO have until August 17, 2026, to apply for lead plaintiff status in the ongoing litigation.