MarketAxess Holdings, Inc.
MARKETAXESS HOLDINGS INC (Form: 4, Received: 06/12/2017 16:47:48)
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 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 *

Themelis Nicholas
2. Issuer Name and Ticker or Trading Symbol

MARKETAXESS HOLDINGS INC [ MKTX ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

C/O MARKETAXESS HOLDINGS INC., 299 PARK AVENUE
3. Date of Earliest Transaction (MM/DD/YYYY)

6/9/2017
(Street)

NEW YORK, NY 10171
(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   6/9/2017     M    5596   A $10.93   67763   D  
 
Common Stock   6/9/2017     S    2786   D $200.4992   (1) 64977   D  
 
Common Stock   6/9/2017     S    2310   D $201.0065   (2) 62667   D  
 
Common Stock   6/9/2017     S    500   D $202.01   62167   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
Employee Stock Option (right to buy)   $10.93   6/9/2017     M         5596      (3) 1/15/2018   Common Stock   5596   $0   4000   D  
 

Explanation of Responses:
(1)  The transaction was executed in multiple trades at prices ranging from $199.70 to $200.68. The price above reflects the weighted average sales price. Detailed information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, the Issuer or a security holder of the Issuer.
(2)  The transaction was executed in multiple trades at prices ranging from $200.70 to $201.49. The price above reflects the weighted average sales price. Detailed information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, the Issuer or a security holder of the Issuer.
(3)  The employee stock option is currently exercisable.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Themelis Nicholas
C/O MARKETAXESS HOLDINGS INC.
299 PARK AVENUE
NEW YORK, NY 10171


Chief Information Officer

Signatures
/s/ Ori Solomon, as Attorney-in-Fact for Nicholas Themelis 6/12/2017
** 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).
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