Edward Durkin - 17 Jun 2023 Form 4 Insider Report for Casa Systems Inc

Role: CFO and Interim CEO
Signature: /s/ Timothy C. Rodenberger, as Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 17 Jun 2023
Net transactions value: -$23,418
Form type: 4
Filing time: 20 Jun 2023, 18:03:20 UTC
Previous filing: 16 May 2023
Next filing: 21 Jul 2023
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		+72,537	+177%		113,618	17 Jun 2023	Direct	F1
transaction	CASA	Common Stock	Tax liability	$23,418	-21,289	-19%	$1.10	92,329	17 Jun 2023	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	+72,537	+50%	$0.000000	217,612	17 Jun 2023	Common Stock	72,537		Direct	F3, F4

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

Explanation of Responses:

Id	Content
F1	Restricted stock units ("RSUs") converted into common stock, $0.001 par value per share (the "Common Stock"), of Casa Systems, Inc. (the "Company") on a one-for-one basis upon vesting of the RSU.
F2	Shares withheld by the Company to satisfy tax withholding requirements on vesting of RSUs. No shares were sold.
F3	Each RSU represents the right to receive one share of Common Stock of 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 thevesting date, less applicable taxes.
F4	The RSUs are scheduled to vest over one year, with 25% of the shares underlying the award vesting on June 17, 2023, and the remainder of the shares underlying the award vesting in three equal quarterly installments thereafter. The RSUs have no expiration date.