FORM 4
[ X ] 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 OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Merchant Shehzad 		2. Issuer Name and Ticker or Trading Symbol

Gigamon Inc. [ GIMO ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chief Technology Officer
(Last)          (First)          (Middle)

C/O GIGAMON INC., 3300 OLCOTT STREET 		3. Date of Earliest Transaction (MM/DD/YYYY)

12/27/2017
(Street)

SANTA CLARA, CA 95054
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Common Stock   12/27/2017     U    69975   (1) D   (2) 0   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Stock Option (right to buy)   $14.70   12/27/2017     D         8681      (3) 4/30/2023   Common Stock   8681     (3) 0   D    
Stock Option (right to buy)   $30.51   12/27/2017     D         4791      (4) 2/14/2024   Common Stock   4791     (4) 0   D    
Stock Option (right to buy)   $21.44   12/27/2017     D         29167      (5) 2/17/2022   Common Stock   29167     (5) 0   D    
Performance-Based Restricted Stock Units   $0.00   12/27/2017     D         18689      (6)   (6) Common Stock   18689     (6) 0   D    
Performance Shares   $0.00   12/27/2017     D         25000      (7)   (7) Common Stock   25000     (7) 0   D    

Explanation of Responses:
(1)  Certain of these securities were restricted stock units ("RSUs") that represented the Reporting Person's right to receive shares of Common Stock of the Issuer. The RSUs were cancelled pursuant to that certain Merger Agreement, dated October 26, 2017, between the Issuer, Ginsberg Holdco, Inc. and Ginsberg Merger Sub, Inc. (the "Merger Agreement"), in exchange for a cash payment of $38.50 per share.
(2)  Disposed of pursuant to the Merger Agreement, in exchange for a cash payment of $38.50 per share.
(3)  The option, originally for 83,333 shares and of which an aggregate of 74,652 shares have been exercised, which provided for vesting of 25% of the option on March 29, 2014 with the remaining shares vesting in thirty six equal monthly installments thereafter, was cancelled pursuant to the Merger Agreement, in exchange for a cash payment equal to the difference between $38.50 and the per share exercise price of the option.
(4)  The option, originally for 14,371 shares and of which 9,580 shares have been exercised, which provided for vesting of 25% of the option on February 14, 2015 with the remaining shares vesting in thirty six equal monthly installments thereafter, was cancelled pursuant to the Merger Agreement, in exchange for a cash payment equal to the difference between $38.50 and the per share exercise price of the option.
(5)  The option, originally for 50,000 shares and of which an aggregate of 20,833 shares have been exercised, which provided for vesting of 25% of the option on February 17, 2016 with the remaining shares vesting in thirty six equal monthly installments thereafter, was cancelled pursuant to the Merger Agreement, in exchange for a cash payment equal to the difference between $38.50 and the per share exercise price of the option.
(6)  The performance-based RSUs, originally for 20,000 shares and reflected the target number and were to be based on the achievement of certain performance metrics for 2016 (and was later restated to reflect the achievement of approximately 150% of the performance criteria) for which the Reporting Person was eligible to receive up to 200% of the target number based on the achievement of the performance metrics and of which an aggregate of 11,211 shares have been exercised, was cancelled pursuant to the Merger Agreement, in exchange for a cash payment of $38.50 per share.
(7)  The performance shares, which reflected the target number and were to be based on the achievement of certain performance metrics for 2017 and for which the Reporting Person was eligible to receive up to 200% of the target number based on the achievement of the performance metrics, was cancelled pursuant to the Merger Agreement for no consideration.

Remarks:
All share numbers and per share prices disclosed on this Form 4 give effect to the Issuer's one-for-three reverse stock split completed on May 20, 2013.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Merchant Shehzad
C/O GIGAMON INC.
3300 OLCOTT STREET
SANTA CLARA, CA 95054

Chief Technology Officer

Signatures
/s/ Paul Shinn, Attorney-in-Fact 12/27/2017
** Signature of Reporting Person Date


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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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