>>> US After Hours Summary: PRPL -8.3% falls on news its CEO is stepping down, w

After Hours Summary: PRPL -8.3% falls on news its CEO is stepping down, weak guidance; AA +4.9% jumps on news it will join S&P MidCap 400

After Hours Gainers:

Companies trading higher in after hours in reaction to earnings/guidance: None

Companies trading higher in after hours in reaction to news: GAMB +7.3% (to acquire RotoWire), SNSE +5.3% (to be added to the NASDAQ Biotech Index), AA +4.9% (to join S&P MidCap 400; also announces closure of aluminum smelting capacity at Wenatchee), ELY +3.4% (approves $50 mln share repurchase program), EQT +2.1% (approves $1 bln share repurchase program, also to reinstate its dividend), NGD +2.1% (to sell Blackwater Project gold stream for upfront cash consideration US$300 mln), BLU +1.2% (commences $175 mln stock offering), SEEL +1.2% (stock offering), NOG +1.1% (names new COO), FNA +1% (received supplemental approval order from FDA for Patient Specific Talus Spacer), KMPH +0.8% (to be added to the NASDAQ Biotech Index), FTNT +0.8% (to join Nasdaq 100 Index), RKLB +0.7% (to acquire SolAero, a supplier of space solar power products, for $80 mln), PGEN +0.3% (positive interim phase 1 data for PRGN-3006 UltraCAR-T), AVNS +0.1% (to acquire OrthogenRx for $160 mln), ALSN +0.1% (selected by Israeli Ministry of Defense for infantry fighting vehicle), MKL +0.1% (to acquire minority interest in Metromont)

After Hours Losers:

Companies trading lower in after hours in reaction to earnings/guidance: PL -12.7%

Companies trading lower in after hours in reaction to news: PRPL -8.3% (CEO stepping down, names new CEO; expects rev, adj. EBITDA at low end of previous guidance), APTO -8.2% (HM43239 demonstrates durable clinical benefit), MX -1.7% (MX and Wise Road Capital mutually terminate acquisition agreement), HARP -0.2% (provides drug pipeline update), AMK -0.2% (reports Nov operating metrics), BMY -0.2% (files mixed securities shelf offering), CLVT -0.1% (discloses separation agreement with CFO), GILD -0.1% (GILD and Merck to stop all dosing of participants in a Phase 2 study for people living with HIV)