JOHN ABBOT - 13 Dec 2021 Form 4 Insider Report for DATTO HOLDING CORP.

Role: Chief Financial Officer
Signature: /s/ Adam Collicelli, by Power of Attorney
Issuer symbol: N/A
Transactions as of: 13 Dec 2021
Net transactions value: -$23,168
Form type: 4
Filing time: 15 Dec 2021, 16:56:23 UTC
Previous filing: 10 Dec 2021
Next filing: 23 Dec 2021
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	$24,307	+1,899		$12.80	1,899	13 Dec 2021	Direct	F1
transaction	MSP	Common Stock	Sale	$47,475	-1,899	-100%	$25.00	0	13 Dec 2021	Direct	F1

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	-1,899	-0.3%	$0.000000	637,000	13 Dec 2021	Common Stock	1,899	$12.80	Direct	F2

* 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 December 16, 2020.
F2	Consists of options, of which 25% vested on March 2, 2021, and an additional 6.25% vest quarterly thereafter as long as the Reporting Person continues to be employed as of each respective vesting date.