SPX : 2021 Notice Card

The Sample Company

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Online

Go towww.envisionreports.com/SPXCor scan

the QR code - login details are located in the

shaded bar below.

Stockholder Meeting Notice

Important Notice Regarding the Availability of Proxy Materials for the

SPX Corporation Stockholder Meeting to be Held on May 11, 2021

Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual stockholders' meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important!

This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy statement and annual report to stockholders are available at:

www.envisionreports.com/SPXC

Easy Online Access - View your proxy materials and vote.

Step 1:	Go towww.envisionreports.com/SPXC.
Step 2:	Click on Cast Your Vote or Request Materials.
Step 3:	Follow the instructions on the screen to log in.
Step 4:	Make your selections as instructed on each screen for your delivery preferences.
Step 5:	Vote your shares.

When you go online, you can also help the environment by consenting to receive electronic delivery of future materials.

Obtaining a Copy of the Proxy Materials - If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before April 30, 2021 to facilitate timely delivery.

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Stockholder Meeting Notice

SPX Corporation's Annual Meeting of Stockholders will be held on May 11, 2021 at 8 a.m. (Eastern Time), virtually via the internet atwww.meetingcenter.io/200226083. To access the virtual meeting, you must have the information that is printed in the shaded bar located on the reverse side of this form. The password for this meeting is SPXC2021.

Proposals to be voted on at the meeting are listed below along with the Board of Directors' recommendations.

The Board of Directors recommend a vote FOR all the nominees listed and FOR Proposals 2 and 3:

• 1. Election of Directors:

  • 01 - Ruth G. Shaw (Term will expire in 2024)

  • 02 - Robert B. Toth (Term will expire in 2024)

  • 03 - Angel S. Willis (Term will expire in 2024)

• 2. Approval of Named Executive Officers' Compensation, on a Non-binding Advisory Basis.

• 3. Ratification of Appointment of Deloitte & Touche LLP as the Company's Independent Registered Public Accounting Firm for 2021.

• 4. In their discretion, the Proxies are authorized to vote upon such other business as may properly come before the meeting.

PLEASE NOTE - YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card.

Here's how to order a copy of the proxy materials and select delivery preferences:

Current and future delivery requests can be submitted using the options below.

If you request an email copy, you will receive an email with a link to the current meeting materials.

PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials.

• - Internet - Go towww.envisionreports.com/SPXC. Click Cast Your Vote or Request Materials.

• - Phone - Call us free of charge at 1-866-641-4276.

• - Email - Send an email [e-mail] "Proxy Materials SPX Corporation" in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials.

  To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by April 30, 2021.