Research Frontiers receives Nasdaq deficiency notices for bid price and market value

Research Frontiers Incorporated received two deficiency notification letters from Nasdaq on June 2, 2026, stating the company failed to meet the $1.00 minimum bid price requirement and the $35 million minimum Market Value of Listed Securities requirement for continued listing on The Nasdaq Capital Market. The company has 180 calendar days until November 30, 2026, to regain compliance with both requirements; trading of its common stock under ticker REFR will continue during the compliance period.