MSP Datto Holding Corp

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 * MCCHORD AUSTIN WILLIAMS	2. Issuer Name and Ticker or Trading Symbol DATTO HOLDING CORP. [ MSP ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner _____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle) 101 MERRITT 7	3. Date of Earliest Transaction (MM/DD/YYYY) 7/22/2021
(Street) NORWALK, CT 06851 (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	7/22/2021		S(1)		17499.00	D	$27.06 (2)	6555588.00	D
Common Stock	7/23/2021		S(1)		10911.00	D	$27.05 (3)	6544677.00	D

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 Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. 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 Date		7. 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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:
(1)	The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on June 14, 2021.
(2)	This transaction was executed in multiple trades at prices ranging from $27.00 to $27.19 per share. The price reported reflects the weighted average sale price. Upon request by the Issuer, any security holder of the Issuer or the staff of the SEC, the Reporting Person undertakes to provide full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(3)	This transaction was executed in multiple trades at prices ranging from $27.00 to $27.21 per share. The price reported reflects the weighted average sale price. Upon request by the Issuer, any security holder of the Issuer or the staff of the SEC, the Reporting Person undertakes to provide full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MCCHORD AUSTIN WILLIAMS 101 MERRITT 7 NORWALK, CT 06851	X

Signatures
/s/ Adam Collicelli, by Power of Attorney		7/26/2021
**Signature of Reporting Person		Date