ProMIS Neurosciences is trading 5.67% up in after-hours at $11.56; no confirmed late-breaking company announcement explaining the move was identified. - The shares closed at $10.63 in the September 29 regular session. - The company was scheduled to participate in the Roth Healthcare Opportunities Conference on September 29; its latest listed press release was dated September 1. - The broad market picture was mixed and does not clearly explain the stock-specific gain; available information does not establish a catalyst.