WILLIAM SEVERANCE - 29 Mar 2022 Form 4 Insider Report for DATTO HOLDING CORP.

Role: Chief Accounting Officer
Signature: /s/ Adam Collicelli, by Power of Attorney
Issuer symbol: N/A
Transactions as of: 29 Mar 2022
Net transactions value: -$23,508
Form type: 4
Filing time: 31 Mar 2022, 17:46:38 UTC
Previous filing: 05 Jan 2022
Next filing: 05 Apr 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MSP	Common Stock	Options Exercise	$21,113	+1,652	+8.3%	$12.78	21,503	29 Mar 2022	Direct	F1, F2
transaction	MSP	Common Stock	Sale	$44,621	-1,652	-7.7%	$27.01	19,851	29 Mar 2022	Direct	F1, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MSP	Options (Right to Buy)	Options Exercise	$0	-1,652	-4.1%	$0.000000	38,348	29 Mar 2022	Common Stock	1,652	$12.78	Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The exercise and sale reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on September 16, 2021.
F2	Includes 951 shares acquired under the Company's 2021 Employee Stock Purchase Plan since the last Statement of Changes in Beneficial Ownership was filed by the Reporting Person.
F3	This transaction was executed in multiple trades at prices ranging from $27.00 to $27.02 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.
F4	Consists of options, of which 25% vested on December 31, 2020, and an additional 6.25% vest quarterly thereafter as long as the Reporting Person continues to be employed as of each respective vesting date.