Robert Raymond Petrocelli - 28 May 2021 Form 4 Insider Report for DATTO HOLDING CORP.

Role: Chief Technology Officer
Signature: /s/ Adam Collicelli, by Power of Attorney
Issuer symbol: N/A
Transactions as of: 28 May 2021
Net transactions value: -$7,730
Form type: 4
Filing time: 02 Jun 2021, 17:02:51 UTC
Previous filing: 28 May 2021
Next filing: 10 Jun 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	$5,770	+500	+0.33%	$11.54	150,500	28 May 2021	Direct	F1
transaction	MSP	Common Stock	Sale	$13,500	-500	-0.33%	$27.00	150,000	28 May 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	-500	-0.13%	$0.000000	396,147	28 May 2021	Common Stock	500	$11.54	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	These options vested 25% on July 15, 2020 and then quarterly at a rate of 6.25% as long as the Reporting Person continues to be employed as of each respective vesting date.