Themelis Nicholas

Company

Date

Role

Action

Shares

Amount

Of holding

MKTX MARKETAXESS HOLDINGS INC

7 Mar 2022

Chief Information Officer

Sold, plan not stated

2,000

$729.78K

19.0%

MKTX MARKETAXESS HOLDINGS INC

7 Dec 2021

Chief Information Officer

Sold, plan not stated

2,000

$740.16K

17.3%

MKTX MARKETAXESS HOLDINGS INC

7 Sep 2021

Chief Information Officer

Sold, plan not stated

2,000

$923.08K

14.7%

MKTX MARKETAXESS HOLDINGS INC

11 Aug 2021

Chief Information Officer

Sold, plan not stated

6,433

$2.98M

32.1%

MKTX MARKETAXESS HOLDINGS INC

14 Jun 2021

Chief Information Officer

Sold, plan not stated

7,000

$3.14M

34.0%

MKTX MARKETAXESS HOLDINGS INC

7 Jun 2021

Chief Information Officer

Sold, plan not stated

4,000

$1.78M

22.7%

MKTX MARKETAXESS HOLDINGS INC

5 Mar 2021

Chief Information Officer

Sold, plan not stated

4,000

$1.91M

18.5%

MKTX MARKETAXESS HOLDINGS INC

7 Dec 2020

Chief Information Officer

Sold, plan not stated

4,000

$2.19M

13.2%

MKTX MARKETAXESS HOLDINGS INC

29 Oct 2020

Chief Information Officer

Sold, plan not stated

17,262

$9.58M

36.4%

MKTX MARKETAXESS HOLDINGS INC

9 Sep 2020

Chief Information Officer

Sold, plan not stated

4,000

$1.83M

11.7%

MKTX MARKETAXESS HOLDINGS INC

8 May 2020

Chief Information Officer

Sold, plan not stated

4,000

$1.92M

10.5%

MKTX MARKETAXESS HOLDINGS INC

10 Feb 2020

Chief Information Officer

Sold, plan not stated

4,000

$1.37M

9.4%

MKTX MARKETAXESS HOLDINGS INC

8 Nov 2019

Chief Information Officer

Sold, plan not stated

4,000

$1.39M

7.9%

MKTX MARKETAXESS HOLDINGS INC

8 Aug 2019

Chief Information Officer

Sold, plan not stated

2,750

$955.31K

5.1%

MKTX MARKETAXESS HOLDINGS INC

26 Apr 2019

Chief Information Officer

Sold, plan not stated

1,489

$395.49K

2.7%

MKTX MARKETAXESS HOLDINGS INC

14 Aug 2018

Chief Information Officer

Sold, plan not stated

12,831

$2.39M

23.4%

MKTX MARKETAXESS HOLDINGS INC

9 Mar 2018

Chief Information Officer

Sold, plan not stated

5,400

$1.18M

9.0%

MKTX MARKETAXESS HOLDINGS INC

2 Nov 2017

Chief Information Officer

Sold, plan not stated

4,000

$705.61K

6.1%

MKTX MARKETAXESS HOLDINGS INC

9 Jun 2017

Chief Information Officer

Sold, plan not stated

5,596

$1.12M

8.3%

MKTX MARKETAXESS HOLDINGS INC

9 Feb 2017

Chief Information Officer

Sold, plan not stated

10,468

$1.97M

14.4%

MKTX MARKETAXESS HOLDINGS INC

23 Aug 2016

Chief Information Officer

Sold, plan not stated

5,745

$950.22K

8.1%

MKTX MARKETAXESS HOLDINGS INC

22 Aug 2016

Chief Information Officer

Sold, plan not stated

455

$75.28K

0.6%

MKTX MARKETAXESS HOLDINGS INC

3 Feb 2016

Chief Information Officer

Sold, plan not stated

10,683

$1.22M

12.9%

MKTX MARKETAXESS HOLDINGS INC

10 Feb 2015

Chief Information Officer

Sold, plan not stated

5,000

$403.50K

6.6%

MKTX MARKETAXESS HOLDINGS INC

9 Feb 2015

Chief Information Officer

Sold, plan not stated

4,919

$395.61K

6.1%

MKTX MARKETAXESS HOLDINGS INC

21 Aug 2014

Chief Information Officer

Sold, plan not stated

11,000

$633.35K

16.2%

MKTX MARKETAXESS HOLDINGS INC

20 Nov 2013

Chief Information Officer

Sold, plan not stated

6,659

$454.82K

9.4%

MKTX MARKETAXESS HOLDINGS INC

19 Nov 2013

Chief Information Officer

Sold, plan not stated

20,818

$1.42M

24.5%

MKTX MARKETAXESS HOLDINGS INC

16 May 2013

Chief Information Officer

Sold, plan not stated

17,000

$780.07K

20.9%

MKTX MARKETAXESS HOLDINGS INC

13 Dec 2012

Chief Information Officer

Sold, plan not stated

41,749

$1.35M

34.4%

MKTX MARKETAXESS HOLDINGS INC

12 Dec 2012

Chief Information Officer

Sold, plan not stated

16,904

$551.58K

17.5%

MKTX MARKETAXESS HOLDINGS INC

11 Dec 2012

Chief Information Officer

Sold, plan not stated

16,278

$528.65K

17.0%

MKTX MARKETAXESS HOLDINGS INC

10 Dec 2012

Chief Information Officer

Sold, plan not stated

15,069

$492.26K

15.9%

MKTX MARKETAXESS HOLDINGS INC

12 Jun 2012

Chief Information Officer

Sold, plan not stated

32,379

$975.09K

31.8%

MKTX MARKETAXESS HOLDINGS INC

11 Jun 2012

Chief Information Officer

Sold, plan not stated

17,263

$526.48K

19.9%

MKTX MARKETAXESS HOLDINGS INC

7 Nov 2011

Chief Information Officer

Sold, plan not stated

21,201

$602.05K

20.0%

MKTX MARKETAXESS HOLDINGS INC

4 Nov 2011

Chief Information Officer

Sold, plan not stated

76,869

$2.20M

43.4%

MKTX MARKETAXESS HOLDINGS INC

8 Mar 2011

Chief Information Officer

Sold, plan not stated

19,000

$421.99K

15.9%

MKTX MARKETAXESS HOLDINGS INC

7 Mar 2011

Chief Information Officer

Sold, plan not stated

11,000

$242.55K

8.4%

MKTX MARKETAXESS HOLDINGS INC

12 Nov 2010

Chief Information Officer

Sold, plan not stated

25,000

$462.72K

17.3%

MKTX MARKETAXESS HOLDINGS INC

25 Feb 2010

Chief Information Officer

Sold, plan not stated

11,162

$168.49K

7.2%

MKTX MARKETAXESS HOLDINGS INC

24 Feb 2010

Chief Information Officer

Sold, plan not stated

3,838

$59.05K

2.4%

MKTX MARKETAXESS HOLDINGS INC

4 Nov 2008

Chief Information Officer

Bought

4,000

$20.00K

6.6%

MKTX MARKETAXESS HOLDINGS INC

3 Nov 2008

Chief Information Officer

Bought

4,000

$22.00K

7.1%