Sec Form 4 Filing - Xie Lucy @ Casa Systems Inc - 2019-02-05

Every director, officer or owner of more than ten percent of a class of equity securities registered under Section 12 of the '34 Act must file with the U.S. Securities and Exchange Commission (SEC) a statement of ownership regarding such security.

Form 4: Statement of changes in beneficial ownership, filed before the end of the 2nd business day following the day on which a transaction resulting in a change in beneficial ownership.

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The following is an SEC EDGAR document rendered as filed.
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FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person *
Xie Lucy
2. Issuer Name and Ticker or Trading Symbol
Casa Systems Inc [ CASA]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X __ Director _____ 10% Owner
X __ Officer (give title below) _____ Other (specify below)
SVP of Operations
(Last)
(First)
(Middle)
C/O CASA SYSTEMS, INC., 100 OLD RIVER ROAD
3. Date of Earliest Transaction (MM/DD/YY)
02/05/2019
(Street)
ANDOVER, MA01810
4. If Amendment, Date Original Filed (MM/DD/YY)
6. Individual or Joint/Group Filing (Check Applicable Line)
__ X __ Form filed by One Reporting Person
_____ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(MM/DD/YY)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted stock units ( 1 ) 02/05/2019 A 126,271 ( 2 ) ( 2 ) Common Stock 126,271 $ 0 126,271 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Xie Lucy
C/O CASA SYSTEMS, INC.
100 OLD RIVER ROAD
ANDOVER, MA01810
X SVP of Operations
Signatures
/s/ Jerry Guo, attorney-in-fact 02/07/2019
** Signature of Reporting Person Date
Explanation of Responses:
( 1 )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.
( 2 )Scheduled to vest over four years, with 25% of the shares underlying the award vesting on January 1, 2020, and 25% of the shares underlying the award vesting at the end of each successive one-year period thereafter.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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