SEMrush CLO reports RSU tax withholding; holds 254,928 shares

Rhea-AI Filing Summary

SEMrush Holdings (SEMR) insider filing: The Chief Legal Officer reported a Form 4 transaction reflecting tax withholding tied to RSU vesting. On 11/01/2025, the company withheld 2,537 shares of Class A Common Stock to satisfy taxes from the RSUs’ net share delivery (transaction code F), calculated using the $7.26 closing price on 10/31/2025.

Following this administrative transaction, the reporting person beneficially owns 254,928 shares, held directly. A portion of the holdings consists of RSUs, each representing the right to receive one share upon vesting.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Mason David W

Role Chief Legal Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	2,537	$7.26	$18K

Holdings After Transaction: Class A Common Stock — 254,928 shares (Direct)

Footnotes (1)

1. Represents shares of Class A Common Stock withheld by the Company to satisfy tax withholding obligations in connection with the net issuance of shares of Class A Common Stock delivered to the Reporting Person on November 1, 2025, from the vesting of restricted stock units ("RSUs"). The number of shares withheld by the Company to satisfy tax withholding obligations (and the net issuance) is based on the closing price of the Company's Class A Common Stock on October 31, 2025. A portion of these shares represent RSUs. Each RSU represents a right to receive one share of the Issuer's Class A Common Stock upon vesting.

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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).

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^*

Mason David W

(Last) (First) (Middle)

C/O SEMRUSH HOLDINGS, INC.

800 BOYLSTON STREET, SUITE 2475

(Street)

BOSTON MA 02199

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SEMrush Holdings, Inc. [ SEMR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/01/2025

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

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. 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	11/01/2025		F		2,537(1)	D	$7.26	254,928(2)	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. Represents shares of Class A Common Stock withheld by the Company to satisfy tax withholding obligations in connection with the net issuance of shares of Class A Common Stock delivered to the Reporting Person on November 1, 2025, from the vesting of restricted stock units ("RSUs"). The number of shares withheld by the Company to satisfy tax withholding obligations (and the net issuance) is based on the closing price of the Company's Class A Common Stock on October 31, 2025.

2. A portion of these shares represent RSUs. Each RSU represents a right to receive one share of the Issuer's Class A Common Stock upon vesting.

Remarks:

	/s/ David Mason	11/03/2025
	** 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.

FAQ

What did SEMR’s insider report on Form 4?

The Chief Legal Officer reported a tax withholding transaction from RSU vesting, with 2,537 Class A shares withheld (code F).

How many SEMrush (SEMR) shares were withheld for taxes?

2,537 Class A Common Stock shares were withheld to cover tax obligations from RSU vesting on 11/01/2025.

What price was used to determine the RSU tax withholding for SEMR?

The withholding and net share issuance were based on the $7.26 closing price on 10/31/2025.

What is the insider’s beneficial ownership after the transaction for SEMR?

Following the transaction, beneficial ownership is 254,928 shares, held directly.

What does transaction code F indicate on this SEMR Form 4?

Code F is used here for shares withheld by the company to satisfy tax withholding obligations related to RSU vesting.

Do the holdings include RSUs for SEMR’s insider?

Yes. A portion of the reported holdings represents RSUs, each convertible into one share upon vesting.