Nicholas Themelis - Aug 11, 2021 Form 4 Insider Report for MARKETAXESS HOLDINGS INC (MKTX)

Role
Chief Information Officer
Signature
/s/ Jason Edelstein, as Attorney-in-Fact for Nicholas Themelis
Stock symbol
MKTX
Transactions as of
Aug 11, 2021
Transactions value $
-$2,312,026
Form type
4
Date filed
8/12/2021, 04:39 PM
Previous filing
Jun 15, 2021
Next filing
Sep 9, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MKTX Common Stock, par value $0.003 per share Options Exercise $665K +6.43K +47.35% $103.30 20K Aug 11, 2021 Direct
transaction MKTX Common Stock, par value $0.003 per share Sale -$542K -1.18K -5.89% $460.06 18.8K Aug 11, 2021 Direct F1
transaction MKTX Common Stock, par value $0.003 per share Sale -$798K -1.73K -9.19% $460.70 17.1K Aug 11, 2021 Direct F2
transaction MKTX Common Stock, par value $0.003 per share Sale -$302K -654 -3.82% $462.13 16.5K Aug 11, 2021 Direct F3
transaction MKTX Common Stock, par value $0.003 per share Sale -$586K -1.27K -7.69% $462.93 15.2K Aug 11, 2021 Direct F4
transaction MKTX Common Stock, par value $0.003 per share Sale -$233K -502 -3.31% $464.71 14.7K Aug 11, 2021 Direct F5
transaction MKTX Common Stock, par value $0.003 per share Sale -$41.9K -90 -0.61% $465.64 14.6K Aug 11, 2021 Direct F6
transaction MKTX Common Stock, par value $0.003 per share Sale -$162K -347 -2.38% $466.45 14.3K Aug 11, 2021 Direct F7
transaction MKTX Common Stock, par value $0.003 per share Sale -$176K -376 -2.64% $468.22 13.9K Aug 11, 2021 Direct F8
transaction MKTX Common Stock, par value $0.003 per share Sale -$63.3K -135 -0.97% $468.88 13.7K Aug 11, 2021 Direct F9
transaction MKTX Common Stock, par value $0.003 per share Sale -$71.5K -152 -1.11% $470.46 13.6K Aug 11, 2021 Direct F10

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 MKTX Stock Option (right to buy) Options Exercise $0 -6.43K -100% $0.00* 0 Aug 11, 2021 Common Stock 6.43K $103.30 Direct F11
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The transactions were executed in multiple trades at prices ranging from $459.49 to $460.45. 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.
F2 The transactions were executed in multiple trades at prices ranging from $460.51 to $461.45. 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.
F3 The transactions were executed in multiple trades at prices ranging from $461.73 to $462.69. 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.
F4 The transactions were executed in multiple trades at prices ranging from $462.78 to $463.71. 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.
F5 The transactions were executed in multiple trades at prices ranging from $464.24 to $465.22. 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.
F6 The transactions were executed in multiple trades at prices ranging from $465.25 to $466.00. 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.
F7 The transactions were executed in multiple trades at prices ranging from $466.26 to $466.83. 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.
F8 The transactions were executed in multiple trades at prices ranging from $467.57 to $468.55. 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.
F9 The transactions were executed in multiple trades at prices ranging from $468.86 to $468.93. 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.
F10 The transactions were executed in multiple trades at prices ranging from $470.35 to $470.72. 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.
F11 The stock options were fully exercisable.