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 *

Smith Jeffrey C		 2. Issuer Name and Ticker or Trading Symbol

Cyxtera Technologies, Inc. [ CYXT ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    __X__ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle)

C/O STARBOARD VALUE LP, 201 E LAS OLAS BOULEVARD, SUITE 1000		 3. Date of Earliest Transaction (MM/DD/YYYY)

10/1/2022
(Street)

FORT LAUDERDALE, FL 33301
(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
Class A Common Stock 10/1/2022  M  3273 A (1)3273 D  
Class A Common Stock         20767571 I By Starboard Value LP (2)

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
Restricted Stock Unit  (1)10/1/2022  M     3273   (3) (3)Class A Common Stock 3273 $0.00 20304 (4)D  
Explanation of Responses:
(1) Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class A common stock.
(2) Starboard Value LP ("Starboard") serves as the investment manager or manager of certain managed accounts and private investment funds (collectively, the "Starboard Accounts"), which hold the securities reported herein and as such may be deemed to beneficially own such securities. The Reporting Person, as a Managing Member of Starboard, may be deemed to beneficially own the securities directly held by the Starboard Accounts for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. The Reporting Person expressly disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
(3) The 3,273 RSUs vested on October 1, 2022 and had no expiration date.
(4) Other RSUs also have no expiration and vest one year after grant.

Remarks:
The Reporting Person also owns a partial pecuniary interest in SVAC Sponsor LLC through his interest in the Starboard Accounts.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Smith Jeffrey C
C/O STARBOARD VALUE LP
201 E LAS OLAS BOULEVARD, SUITE 1000
FORT LAUDERDALE, FL 33301		XX
Signatures
/s/ Jeffrey C. Smith10/4/2022
**Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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