[SCHEDULE 13G/A] Assembly Biosciences, Inc SEC Filing

Rhea-AI Filing Summary

Assembly Biosciences, Inc. Schedule 13G/A filed by Alexander Schornstein reports he beneficially owns 543,523 shares of common stock, representing 3.49% of the outstanding class based on 15,560,009 shares. The filing amends prior Schedule 13G to correct clerical errors and to update ownership through the filing date. Ownership comprises 451,219 shares held directly and 92,024 shares held by Camino Capital GmbH, of which Mr. Schornstein is sole beneficial owner. The filer states he no longer owns at least 5% of the company and is therefore not required to file further amendments under Rule 13d-2(d).

Positive

• Amendment corrects clerical errors from prior Schedule 13G filings, improving disclosure accuracy.
• Updated ownership disclosed: 543,523 shares beneficially owned, representing 3.49% of outstanding common stock.

Negative

• None.

Insights

Financial Analyst

TL;DR: Amendment clarifies ownership and confirms sub-5% stake, reducing regulatory reporting obligations.

This Schedule 13G/A clarifies prior clerical errors and updates holdings to 543,523 shares or 3.49% of ASMB. For investors and analysts, the key takeaway is that the reporting person no longer meets the 5% beneficial ownership threshold, which removes ongoing amendment obligations and signals reduced potential for an activist or control bid from this holder. The disclosure is routine and informational rather than a material corporate development.

Corporate Governance Expert

TL;DR: Corrective amendment improves disclosure accuracy; no change to control dynamics given sub-5% ownership.

The amendment rectifies clerical issues in the prior filing and documents that Mr. Schornstein holds voting and dispositive power over 543,523 shares, including shares owned through Camino Capital GmbH. From a governance standpoint, the filing is notable for transparency but not substantive change: the holder lacks the size to influence board control and has explicitly certified no intent to influence control. Compliance with Schedule 13G reporting standards appears restored.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

ASSEMBLY BIOSCIENCES, INC.

(Name of Issuer)

Common Stock, par value $0.001

(Title of Class of Securities)

045396207

(CUSIP Number)

08/11/2025

(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)

SCHEDULE 13G

CUSIP No. 045396207

1

Names of Reporting Persons

Alexander Schornstein

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

GERMANY

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 543,523.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 543,523.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

543,523.00

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)

3.49 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ASSEMBLY BIOSCIENCES, INC.
(b)	Address of issuer's principal executive offices: Two Tower Place, 7th Floor, South San Francisco, California 94080
Item 2.
(a)	Name of person filing: Alexander Schornstein
(b)	Address or principal business office or, if none, residence: Kaiser-Friedrich-Allee 2, 52074 Aachen Germany 004915142314669
(c)	Citizenship: Germany
(d)	Title of class of securities: Common Stock, par value $0.001
(e)	CUSIP No.: 045396207
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: 543,523 Includes 451,219 shares of Common Stock held by Alexander Schornstein and 92,024 shares of Common Stock held by Camino Capital GmbH, in which Alexander Schornstein is the sole beneficial owner and has sole voting power. This Schedule 13G/A Amendment No. 3 serves to amend the prior Schedule 13G filed with the U.S. Securities and Exchange Commission on August 12, 2025, by Alexander Schornstein under Rule 13d-2(b) (the "Prior Filing"). This amendment addresses certain clerical errors in the Prior Filing, and clarifies that the Prior Filing should be 13G/A Amendment No.2. The Reporting Person's ownership has been updated to include transactions that occurred until the date of this filing. The Reporting Person, as of the day of this filing, no longer owns at least 5% of the Company's outstanding shares, and thus is no longer a beneficial owner. The Reporting Person is no longer required to file additional amendments to Schedule 13G pursuant to Rule 13d-2(d).
(b)	Percent of class: 3.49% Based upon 15,560,009 shares of common stock of the Issuer issued and outstanding as stated in the Company's registration statement on Form S-3 filed with the United States Securities and Exchange Commission on March 20, 2025, as amended by the registration adding securities to prior Form S-3 on Form S-3MEF filed on August 8, 2025. The offering contemplated in the registration statements was closed on August 11, 2025.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 543,523
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 543,523
	(iv) Shared power to dispose or to direct the disposition of: 0
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 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.

Alexander Schornstein

Signature:	/s/ Alexander Schornstein
Name/Title:	Alexander Schornstein
Date:	08/18/2025

FAQ

What stake does Alexander Schornstein report in ASMB?

The filing reports beneficial ownership of 543,523 shares, equal to 3.49% of ASMB's common stock.

Does Alexander Schornstein control Camino Capital GmbH's shares?

Yes. The filing states 92,024 shares are held by Camino Capital GmbH, of which Mr. Schornstein is the sole beneficial owner and has sole voting power.

Is the filer required to make further Schedule 13G amendments?

No. The filer states he no longer owns at least 5% and therefore is not required to file additional amendments under Rule 13d-2(d).

What was corrected by this Amendment No. 3?

The amendment addresses clerical errors in the prior Schedule 13G and clarifies that the prior filing should have been Amendment No. 2, while updating ownership.

On what share count is the percentage ownership based?

Percent ownership is based on 15,560,009 shares outstanding as stated in the issuer's registration materials referenced in the filing.