FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Nurkin John Webster		 2. Issuer Name and Ticker or Trading Symbol

SPX CORP [ SPXC ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
VP, Gen. Counsel & Secretary
(Last)          (First)          (Middle)

C/O SPX CORPORATION, 6325 ARDREY KELL ROAD, SUITE 400		 3. Date of Earliest Transaction (MM/DD/YYYY)

2/22/2021
(Street)

CHARLOTTE, NC 28277
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
 6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 2/22/2021  A  2508 (1)A (1)70431 (3)D  
Common Stock 2/22/2021  F(2)  2614 D$56.03 67817 (3)D  
Common Stock 2/22/2022  F(2)  586 D$56.03 67231 (3)D  
Common Stoc 2/22/2021  F(2)  580 D$56.03 66651 (3)D  
Common Stock 2/22/2021  F(2)  373 D$56.03 66278 (3)D  
Common Stock         21640 I 401(k) Plan 

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)		8. Price of Derivative Security
(Instr. 5)		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee stock option to purchase common stock $12.85           3/2/2019 (4)3/2/2026 Common Stock 31028  31028 D  
Employee stock option to purchase common stock $27.40           3/1/2020 (5)3/1/2027 Common Stock 13498  13498 D  
Employee stock option to purchase common stock $32.69           2/22/2021 (6)2/22/2028 Common Stock 11778  11778 D  
Employee stock option to purchase common stock $36.51           2/21/2022 (7)2/21/2029 Common Stock 11189  11189 D  
Employee stock option to purchase common stock $50.09           2/20/2023 (8)2/20/2030 Common Stock 7527  7527 D  
Explanation of Responses:
(1) Grant of shares under the SPX Corporation 2019 Stock Compensation Plan for achievement of performance for the 2018-2020 performance period.
(2) Shares delivered to the issuer for the payment of withholding taxes due upon the vesting of restricted stock units previously granted under the SPX Corporation 2019 Stock Compensation Plan.
(3) Vests as to 100% of the shares on the third anniversary of the grant date.
(4) Vests in three equal installments beginning on March 2, 2017.
(5) Vests in three equal installments beginning on March 1, 2018.
(6) Vests in three equal installments beginning on February 22, 2019.
(7) Vests in three equal installments beginning on February 21, 2020.
(8) Vests in three equal installments beginning on February 20, 2021.
Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Nurkin John Webster
C/O SPX CORPORATION
6325 ARDREY KELL ROAD, SUITE 400
CHARLOTTE, NC 28277

VP, Gen. Counsel & Secretary
Signatures
/s/ John Webster Nurkin2/24/2021
**Signature of Reporting PersonDate
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