UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No.    )

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Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐    Preliminary Proxy Statement

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☐    Definitive Proxy Statement

☒    Definitive Additional Materials

☐    Soliciting Material under §240.14a-12

SPX Technologies, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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