Antonio L. DeLise - 26 May 2021 Form 4 Insider Report for MARKETAXESS HOLDINGS INC (MKTX)

Signature
/s/ Jason Edelstein, as Attorney-in-Fact for Antonio L. DeLise
Issuer symbol
MKTX
Transactions as of
26 May 2021
Net transactions value
-$1,336,220
Form type
4
Filing time
27 May 2021, 16:31:59 UTC
Next filing
12 Aug 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 $513,194 +4,968 +18% $103.30 32,599 26 May 2021 Direct
transaction MKTX Common Stock, par value $0.003 per share Sale $1,208,775 -2,616 -8% $462.07 29,983 26 May 2021 Direct F1
transaction MKTX Common Stock, par value $0.003 per share Sale $640,640 -1,384 -4.6% $462.89 28,599 26 May 2021 Direct F2

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 -4,968 -62% $0.000000 3,092 26 May 2021 Common Stock 4,968 $103.30 Direct F3
* 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 $461.56 to $462.54. 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 $462.56 to $463.47. 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 stock options were fully exercisable.