05:41 PM EDT, 10/06/2025 (MT Newswires) -- Solaris Energy Infrastructure ( SEI ) plans a public offering of $600 million in convertible senior unsecured notes due 2031, with an option for underwriters to purchase up to an additional $90 million.

The notes will pay interest semiannually and can be converted into cash, Class A stock, or a combination of both at Solaris' discretion.

Net proceeds will be used to fund capped call transactions, repay subsidiary debt, and support growth capital for new power generation equipment, Solaris said Monday in a statement.

In a concurrent transaction, Morgan Stanley ( MS ) plans to offer Solaris Class A shares borrowed from third parties to facilitate investor hedging

Solaris shares fell 8% in after-hours trading.