08:09 AM EDT, 08/25/2025 (MT Newswires) -- MEDIROM Healthcare Technologies ( MRM ) shares were up 27% in recent Monday premarket activity after the company said late Friday it is participating in a project focused on the development of a new digital infrastructure to support "proof of humanness."

Napco Security Technologies ( NSSC ) stock was up 19% after the company reported higher fiscal Q4 net sales.

Vital Energy ( VTLE ) shares were up 10% after the company said it has agreed to be acquired by Crescent Energy ( CRGY ) for about $3.10 billion in an all-stock deal.

Sasol ( SSL ) stock was up 7% after the company reported a swing to fiscal 2025 earnings.