Mobile-health Network Solutions (MNDR) shares were 37% higher pre-bell Friday, extending Thursday's rally.
Enviri (NVRI) stock was up 33% after the company said it has agreed to sell its Clean Earth unit to Veolia for $3.04 billion in cash.
Azenta (AZTA) shares were 10% higher after the company reported higher fiscal Q4 non-GAAP earnings and revenue.