ProPhase Labs shares fall 13.93% after-hours after Nasdaq delisting notice over bid price compliance.

ProPhase Labs fell 13.93% in after-hours trading following a Nasdaq delisting notice. The exchange informed the company on December 29, 2025, that it failed to meet the $1.00 minimum bid price requirement under Listing Rule 5550(a)(2), triggering a 10-business-day suspension of trading starting January 5, 2026. Nasdaq will file a Form 25 to delist the stock, though ProPhase Labs intends to appeal and seek an OTC quotation. The delisting alert, disclosed in an SEC filing on January 2, 2026, signals heightened regulatory scrutiny and eroded investor confidence, directly correlating with the sharp after-hours price decline.