Matthew Slepian - 01 Jan 2022 Form 4 Insider Report for Casa Systems Inc

Role: Corporate Controller
Signature: /s/ Timothy C. Rodenberger, as Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 01 Jan 2022
Net transactions value: -$10,745
Form type: 4
Filing time: 04 Jan 2022, 20:15:00 UTC
Previous filing: 14 Sep 2021
Next filing: 03 Mar 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CASA	Common Stock	Options Exercise		+5,470	+47%		17,122	01 Jan 2022	Direct	F1
transaction	CASA	Common Stock	Tax liability	$10,745	-1,895	-11%	$5.67	15,227	01 Jan 2022	Direct	F2

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	Options Exercise	$0	-5,470	-25%	$0.000000	16,412	01 Jan 2022	Common Stock	5,470		Direct	F1, F3

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

Explanation of Responses:

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	Shares withheld by the Company to satisfy tax withholding requirements on vesting of RSUs. No shares were sold.
F3	These RSUs are scheduled to vest over four years, with 25% of the 21,882 shares underlying the award vesting on January 1, 2022, and 25% of the shares underlying the award vesting at the end of each successive one-year period thereafter. These RSUs have no expiration date.