Tradeweb (TW) CTO Justin Peterson sells 1,005 shares under 10b5-1 plan

Rhea-AI Filing Summary

Tradeweb Markets Inc. Chief Technology Officer Justin Peterson sold 1,005 shares of Class A common stock in an open-market transaction at a weighted average price of $125.1349 per share on March 20, 2026. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on November 3, 2025.

After this sale, Peterson directly holds 57,512 shares, including unvested restricted stock units that are scheduled to vest between March 2027 and March 2029, subject to his continued employment. The transaction represents a small portion of his overall equity position and appears to be routine liquidity under a pre-planned program.

Insider Trade Summary 10b5-1

Net Seller: 1,005 shares ($125,761)

Net Sell 1 txn

Insider Peterson Justin

Role Chief Technology Officer

Sold 1,005 shs ($126K)

Type	Security	Shares	Price	Value
Sale	Class A common stock	1,005	$125.1349	$126K

Holdings After Transaction: Class A common stock — 57,512 shares (Direct)

Footnotes (1)

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.26 to $125.74, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. This amount includes (i) 2,548 unvested restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock") that are scheduled to vest on March 15, 2027, (ii) 4,485 unvested RSUs in respect of Class A Common Stock that are scheduled to vest in equal installments on March 17, 2027 and March 17, 2028 and (iii) 8,037 unvested RSUs in respect of Class A Common Stock that are scheduled to vest in equal installments on March 15, 2027, March 15, 2028 and March 15, 2029, in each case, subject to the reporting person's continued employment through the applicable vesting date.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Peterson Justin

(Last) (First) (Middle)

TRADEWEB MARKETS INC.

245 PARK AVENUE

(Street)

NEW YORK NEW YORK 10167

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Tradeweb Markets Inc. [ TW ]

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

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

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

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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
Class A common stock	03/20/2026		S(1)		1,005	D	$125.1349(2)	57,512(3)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: 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

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.26 to $125.74, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

3. This amount includes (i) 2,548 unvested restricted stock units ("RSUs") in respect of the issuer's Class A common stock ("Class A Common Stock") that are scheduled to vest on March 15, 2027, (ii) 4,485 unvested RSUs in respect of Class A Common Stock that are scheduled to vest in equal installments on March 17, 2027 and March 17, 2028 and (iii) 8,037 unvested RSUs in respect of Class A Common Stock that are scheduled to vest in equal installments on March 15, 2027, March 15, 2028 and March 15, 2029, in each case, subject to the reporting person's continued employment through the applicable vesting date.

Remarks:

	/s/ Douglas Friedman, Attorney-in-Fact for Justin Peterson	03/24/2026
	** 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 Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Tradeweb (TW) CTO Justin Peterson do in this Form 4 filing?

Justin Peterson sold 1,005 shares of Tradeweb Class A common stock in an open-market transaction. The sale was executed at a weighted average price of $125.1349 per share and reported as a routine disposition under a pre-arranged Rule 10b5-1 trading plan.

At what price did Tradeweb (TW) CTO Justin Peterson sell his shares?

He sold 1,005 shares at a weighted average price of $125.1349 per share. Footnotes explain the sale occurred in multiple trades between $124.26 and $125.74, with full trade-level details available upon request from the company or regulators.

How many Tradeweb (TW) shares does Justin Peterson hold after this sale?

Following the transaction, Justin Peterson holds 57,512 shares of Class A common stock. This total includes unvested restricted stock units scheduled to vest between March 2027 and March 2029, contingent on his continued employment with Tradeweb Markets Inc.

Was Justin Peterson’s Tradeweb (TW) share sale pre-planned?

Yes. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on November 3, 2025. Such plans allow insiders to schedule trades in advance, helping separate routine portfolio management from day-to-day market timing decisions.

What does the Form 4 reveal about Justin Peterson’s unvested Tradeweb (TW) RSUs?

He holds several blocks of unvested restricted stock units that vest between March 2027 and March 2029. Each tranche is subject to his continued employment through the applicable vesting date, reinforcing equity-based compensation alignment with longer-term company performance.

Is Justin Peterson’s Tradeweb (TW) stock sale a large portion of his holdings?

The 1,005-share sale is small compared with his remaining 57,512-share position. This scale, combined with its execution under a pre-set Rule 10b5-1 plan, suggests a routine liquidity event rather than a major change in his equity exposure.