Edward Durkin - 09 May 2022 Form 4 Insider Report for Casa Systems Inc

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	CASA	Restricted Stock Units	Award	$0	+250,000		$0.000000	250,000	09 May 2022	Common Stock	250,000		Direct	F1, F2
transaction	CASA	Stock option (right to buy)	Award	$0	+100,000		$0.000000	100,000	09 May 2022	Common Stock	100,000	$3.60	Direct	F3

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

Id	Content
F1	Each Restricted Stock Unit ("RSU") represents the right to receive one share of common stock, $0.001 par value per share (the "Common Stock") of Casa Systems, Inc. (the "Company") upon vesting, subject to the reporting person's continued service relationship with the Company and the other terms and conditions set forth in the applicable RSU agreement. In the sole discretion of the Company's board of directors, the Company may, with respect to any applicable vesting date, deliver to the reporting person Common Stock or cash having a fair market value equal to the number of shares of Common Stock underlying the portion of the RSU that vested on such date, payable within 30 days of the vesting date, less applicable taxes.
F2	These RSUs are scheduled to vest over four years, with 25% of the shares underlying the award vesting on January 1, 2023, and 25% of the shares underlying the award vesting at the end of each successive one-year period thereafter. The RSUs have no expiration date.
F3	Twenty-five percent of the option shares shall vest and become exercisable on May 9, 2023, and 25% of the option shares shall vest and become exercisable at the end of each successive one-year period thereafter.