By Katherine Hamilton
NextPower raised its sales outlook and said it plans to make an acquisition to support its entry into the power-conversion industry. The stock gained 11% to $138.91 in after-hours trading Tuesday.
Sellas Life Sciences said one of its trials is close to being ready for a data review. The stock climbed 13% to $5.88 after the bell.
System1 said its revenue halved during the first quarter. Shares slid 27% to $3.25 in late trade.
Arteris raised its full-year revenue outlook. Shares rose 9% to $35.39.
Write to Katherine Hamilton at katherine.hamilton@wsj.com
(END) Dow Jones Newswires
May 12, 2026 19:12 ET (23:12 GMT)
Copyright (c) 2026 Dow Jones & Company, Inc.