Multiple law firms, including Glancy Prongay Wolke & Rotter LLP, Hagens Berman, Schall, Brown & Schwartz LLP and now Bragar Eagel & Squire, P.C., have told investors who bought Black Rock Coffee Bar, Inc. shares tied to its September 2025 IPO or purchased securities between September 12, 2025 and May 12, 2026 that they have until August 17, 2026 to seek appointment as lead plaintiff in a securities class action. The suit centers on allegations that Black Rock misled investors in its registration statement, IPO-related disclosures and later public statements about whether its store expansion strategy could avoid meaningful sales transfer from existing locations to new ones. The issue came into sharper focus after Black Rock reported first-quarter 2026 same-store sales growth of 5.2%, down from 9.2% a year earlier, and revenue of about $55.5 million that missed consensus estimates. On the same May 12, 2026 earnings call, Chief Executive Officer Mark Davis said higher store density in maturing markets could rebalance demand across the store base and confirmed that sales transfer had affected same-store sales in the quarter. Shares fell $3.32, or 30.3%, to $7.65 on May 13, 2026, on unusually heavy trading volume, and later traded as low as $7.23, more than 63% below the $20 IPO price.