Aura Biosciences (AURA): Long Focus Capital reports 4.9% ownership

Rhea-AI Filing Summary

Aura Biosciences, Inc. has a significant shareholder group reported by Long Focus Capital Management, LLC and John Helmers under a Schedule 13G. As of the close of business on June 30, 2026, they reported beneficial ownership of 5,119,582 shares of Aura Biosciences common stock, representing 4.9% of the class.

They report no sole voting or dispositive power and shared voting and dispositive power over 5,119,582 shares, held in client accounts managed by Long Focus Capital Management, LLC. The manager states that no single client owns more than 5% of the class. John Helmers controls Long Focus Capital Management, LLC.

Key Figures

Shares beneficially owned: 5,119,582 shares Percent of class: 4.9% Shared voting power: 5,119,582 shares +2 more

5 metrics

Shares beneficially owned 5,119,582 shares Beneficial ownership by Long Focus Capital Management, LLC and John Helmers as of June 30, 2026

Percent of class 4.9% Percentage of Aura Biosciences common stock class beneficially owned as of June 30, 2026

Shared voting power 5,119,582 shares Shares over which the reporting persons have shared power to vote

Shared dispositive power 5,119,582 shares Shares over which the reporting persons have shared power to dispose

Ownership date June 30, 2026 Date as of which ownership figures are reported

Key Terms

beneficially owned, shared voting power, dispositive power, percent of class, +1 more

5 terms

beneficially owned financial

"Securities reported on this statement on as being beneficially owned by Long Focus Capital Management, LLC"

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.

shared voting power financial

"Shared Voting Power 5,119,582.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

dispositive power financial

"Shared Dispositive Power 5,119,582.00"

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.

percent of class financial

"Percent of class: The information required by Item 4(b) is set forth in Row (11)"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Investment Company Act of 1940 regulatory

"shareholders of an investment company registered under the Investment Company Act of 1940"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

FAQ

What stake in AURA does Long Focus Capital Management report?

Long Focus Capital Management, LLC and John Helmers report beneficial ownership of 5,119,582 Aura Biosciences shares, representing 4.9% of the common stock as of June 30, 2026, with shared voting and dispositive power over those shares.

Does any single client of Long Focus own over 5% of AURA stock?

No single client owns over 5%. The filing states that securities reported as beneficially owned by Long Focus were purchased on behalf of its clients and that no one client owns more than 5 percent of the class of such securities.

How much voting power over AURA shares does Long Focus have?

Long Focus reports 0 shares with sole voting power and 5,119,582 shares with shared voting power as of June 30, 2026, reflecting authority under investment management agreements with its clients.

Who is the reporting person for the AURA Schedule 13G filing?

The reporting persons are Long Focus Capital Management, LLC, a Delaware single-member LLC, and John Helmers, a United States citizen who controls Long Focus, reporting beneficial ownership of Aura Biosciences common stock.

When is the AURA ownership information in this Schedule 13G effective?

The ownership information is reported as of the close of business on June 30, 2026. The certification signatures by John Helmers as Managing Member and individually are dated August 14, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/14/2026 - 06:09 AM Accepted by SEC EDGAR 08/14/2026 - 06:05 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

AURA BIOSCIENCES, INC.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

05153U107

(CUSIP Number)

06/30/2026

(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): 05153U107

1

Names of Reporting Persons

LONG FOCUS CAPITAL MANAGEMENT, 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 5,119,582.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 5,119,582.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

5,119,582.00

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)

4.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 05153U107

1

Names of Reporting Persons

JOHN HELMERS

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 5,119,582.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 5,119,582.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

5,119,582.00

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)

4.9 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: AURA BIOSCIENCES, INC.
(b)	Address of issuer's principal executive offices: 80 Guest Street, Boston, MA 02135
Item 2.
(a)	Name of person filing: LONG FOCUS CAPITAL MANAGEMENT LLC JOHN HELMERS
(b)	Address or principal business office or, if none, residence: 207 CALLE DEL PARQUE A&M TOWER, 8TH FLOOR SAN JUAN, PR 00912
(c)	Citizenship: Long Focus Capital Management, LLC, a Delaware single member limited liability company; and John Helmers, a United States citizen.
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 05153U107
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 required by Item 4(a) is set forth in Row (9) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person. Such information is as of the close of business on June 30, 2026. Long Focus Capital Management, LLC and John Helmers directly own no Common Stock. Pursuant to investment management agreements with its clients, Long Focus Capital Management, LLC maintains dispositive and voting power with respect to the securities held in its clients' accounts. John Helmers controls Long Focus Capital Management, LLC.
(b)	Percent of class: The information required by Item 4(b) is set forth in Row (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person. Such information is as of the close of business on June 30, 2026.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row (5) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person. Such information is as of the close of business on June 30, 2026.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row (6) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person. Such information is as of the close of business on June 30, 2026.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row (7) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person. Such information is as of the close of business on June 30, 2026.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row (8) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person. Such information is as of the close of business on June 30, 2026.
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.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Securities reported on this statement on Schedule 13G as being beneficially owned by Long Focus Capital Management, LLC were purchased on behalf of its clients and no one client owns more than 5 percent of a class of such securities.
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.

LONG FOCUS CAPITAL MANAGEMENT, LLC

Signature:	/s/ John Helmers
Name/Title:	Managing Member
Date:	08/14/2026

JOHN HELMERS

Signature:	/s/ John Helmers
Name/Title:	John Helmers
Date:	08/14/2026