Brian Mulroy - 15 Dec 2025 Form 4 Insider Report for SEMrush Holdings, Inc. (SEMR)

Reporting relationship: Chief Financial Officer
Issuer ticker: SEMR
Reported as of: 15 Dec 2025
Net transaction value: -$2,360,365
SEC form: 4
Accepted by SEC: 17 Dec 2025, 18:56:52 UTC
Prior SEC filing: 02 Dec 2025
Next SEC filing: 13 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ David Mason, as attorney-in-fact

Key filing fact

Brian Mulroy filed Form 4 for SEMrush Holdings, Inc. (SEMR) on 17 Dec 2025.

Key facts

This page summarizes Brian Mulroy's Form 4 filing for SEMrush Holdings, Inc. (SEMR).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 17 Dec 2025, 18:56.

Change

Previous filing in this sequence was filed on 02 Dec 2025.
Current net transaction value: -$2,360,365.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001974521 Primary reporting owner

Mulroy Brian

Relationship: Chief Financial Officer
Address: C/O SEMRUSH HOLDINGS, INC., 800 BOYLSTON STREET, SUITE 2475, BOSTON
Signature: /s/ David Mason, as attorney-in-fact
Signature date: 17 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SEMR transaction

Class A Common Stock

Award

Transaction value: $0
Shares: +337,268
Change %: +38%
Price: $0.000000
Shares after: 1,218,536
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F2

SEMR transaction

Class A Common Stock

Tax liability

Transaction value: $1,173,440
Shares: -98,941
Change %: -8.1%
Price: $11.86
Shares after: 1,119,595
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F2, F3

SEMR transaction

Class A Common Stock

Sale

Transaction value: $1,186,925
Shares: -100,078
Change %: -8.9%
Price: $11.86
Shares after: 1,019,517
Date: 16 Dec 2025
Ownership: Direct
Footnotes: F2, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Consists of a grant of a restricted stock unit ("RSU") award under the Issuer's 2021 Stock Option and Incentive Plan. Each RSU represents a right to receive one share of the Issuer's Class A Common Stock upon vesting. The RSUs shall vest over a period of three years, with one-third vesting on December 15, 2026, and then in equal quarterly installments over the 24-month period thereafter.

Footnote F2

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.

Footnote F3

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 December 15, 2025, from the vesting of 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 December 15, 2025.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions in prices ranging from $11.86 to $11.88, inclusive. The Reporting Person undertakes to provide to 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 (4) to this Form 4.