Siguler Guff (NASDAQ: SEMR) files amendment showing ≤5% Class A stake

Rhea-AI Filing Summary

SEMRUSH HOLDINGS, INC. — Siguler Guff Advisers, LLC filed Amendment No. 1 to a Schedule 13G/A reporting ownership of 5 percent or less of Class A Common Stock. The amendment refers readers to the cover page for the specific amounts and voting/dispositive powers and is signed by Marcelo Philips on 04/14/2026.

Key Figures

Filing type: Schedule 13G/A (Amendment No. 1) Ownership threshold: 5 percent or less CUSIP: 81686C104 +2 more

5 metrics

Filing type Schedule 13G/A (Amendment No. 1) Amendment to ownership disclosure

Ownership threshold 5 percent or less Ownership of Class A Common Stock as stated in Item 5

CUSIP 81686C104 Class A Common Stock identifier

Reference date 03/31/2026 Date shown near cover area

Signature date 04/14/2026 Signed by Marcelo Philips, Managing Director, CCO

Key Terms

Schedule 13G/A, beneficially owned, dispositive power

3 terms

Schedule 13G/A regulatory

"Amendment No. 1 to Schedule 13G/A reporting ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned regulatory

"Amount beneficially owned: The information requested by this paragraph is incorporated"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

dispositive power regulatory

"Sole power to dispose or to direct the disposition of: The information requested"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

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Accepted by SEC EDGAR 04/14/2026 - 10:51 AM Learn about SEC filing dates

FAQ

What does the SEMR Schedule 13G/A by Siguler Guff mean?

It reports passive ownership of 5% or less. The filing amends a prior Schedule 13G and states ownership is five percent or less of Class A Common Stock, with detailed amounts referenced on the cover page.

Who filed the amendment for SEMR and who signed it?

Siguler Guff Advisers, LLC filed the amendment. The filing lists the filer as Siguler Guff Advisers, LLC and is signed by Marcelo Philips, Managing Director, Chief Compliance Officer on 04/14/2026.

Does the Schedule 13G/A disclose voting or dispositive power for SEMR shares?

The amendment defers to the cover page for powers. The text states voting and dispositive power details are incorporated by reference to the cover page of the amendment, rather than printed inline in this excerpt.

What class of SEMR stock is covered by this filing?

Class A Common Stock is covered. The filing identifies the security as Class A Common Stock with CUSIP 81686C104 and lists the issuer's principal executive offices in Boston, MA.

What is the effective or reference date shown in the filing?

The document shows a reference date of 03/31/2026 and a signature date of 04/14/2026. The cover area lists 03/31/2026 and the signature block is dated 04/14/2026.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

SEMRUSH HOLDINGS, INC.

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

81686C104

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 81686C104

1

Names of Reporting Persons

Siguler Guff Advisers, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0 %

12

Type of Reporting Person (See Instructions)

OO, IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: SEMRUSH HOLDINGS, INC.
(b)	Address of issuer's principal executive offices: 800 BOYLSTON STREET, SUITE 2475, BOSTON, MA 02199
Item 2.
(a)	Name of person filing: Siguler Guff Advisers, LLC
(b)	Address or principal business office or, if none, residence: C/O Siguler Guff & Company, 200 Park Avenue, 14th Floor, New York, NY 10166
(c)	Citizenship: Delaware
(d)	Title of class of securities: Class A Common Stock
(e)	CUSIP No.:
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information requested by this paragraph is incorporated herein by reference to the cover page to this Schedule 13G/A.
(b)	Percent of class: The information requested by this paragraph is incorporated herein by reference to the cover page to this Schedule 13G/A.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information requested by this paragraph is incorporated herein by reference to the cover page to this Schedule 13G/A.
	(ii) Shared power to vote or to direct the vote: The information requested by this paragraph is incorporated herein by reference to the cover page to this Schedule 13G/A.
	(iii) Sole power to dispose or to direct the disposition of: The information requested by this paragraph is incorporated herein by reference to the cover page to this Schedule 13G/A.
	(iv) Shared power to dispose or to direct the disposition of: The information requested by this paragraph is incorporated herein by reference to the cover page to this Schedule 13G/A.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Siguler Guff Advisers, LLC

Signature:	/s/ Marcelo Philips
Name/Title:	Marcelo Philips/Managing Director, Chief Compliance Officer
Date:	04/14/2026