Anders Hove holds 12.1% stake in LeonaBio

LeonaBio, Inc. (symbol LONA) reports that investment entities associated with Acorn Bioventures have filed Amendment No. 2 to a Schedule 13G disclosing significant ownership of its common stock.

Rhea-AI Filing Summary

LeonaBio, Inc. (symbol LONA) reports that investment entities associated with Acorn Bioventures have filed Amendment No. 2 to a Schedule 13G disclosing significant ownership of its common stock. Based on 9,421,663 shares outstanding as of August 12, 2026, Acorn Bioventures, L.P. and its general partner Acorn Capital Advisors GP, LLC report beneficial ownership of 480,653 shares, or 5.1% of the common stock, with shared voting power over these shares. Acorn Bioventures 2, L.P. and its general partner Acorn Capital Advisors GP 2, LLC report beneficial ownership of 663,763 shares, or 7.0% of the common stock, also with shared voting power. Anders Hove, as Manager of both general partners, may be deemed to beneficially own an aggregate 1,492,521 shares, representing 12.1% of LeonaBio’s common stock, with shared voting power over those shares.

Key Figures

Shares Outstanding: 9,421,663 shares Acorn Bioventures, L.P. Shares: 480,653 shares Acorn Bioventures, L.P. Percent of Class: 5.1% +4 more

7 metrics

Shares Outstanding 9,421,663 shares Common stock outstanding as of August 12, 2026 used to compute ownership percentages

Acorn Bioventures, L.P. Shares 480,653 shares Beneficially owned LeonaBio common shares; 5.1% of the class

Acorn Bioventures, L.P. Percent of Class 5.1% Ownership percentage of LeonaBio common stock for Acorn Bioventures, L.P.

Acorn Bioventures 2, L.P. Shares 663,763 shares Beneficially owned LeonaBio common shares; 7.0% of the class

Acorn Bioventures 2, L.P. Percent of Class 7.0% Ownership percentage of LeonaBio common stock for Acorn Bioventures 2, L.P.

Anders Hove Shares 1,492,521 shares Aggregate LeonaBio common shares he may be deemed to beneficially own

Anders Hove Percent of Class 12.1% Ownership percentage of LeonaBio common stock attributed to Anders Hove

Key Terms

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

5 terms

beneficially own financial

"may be deemed to beneficially own the shares of Common Stock"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

shared voting power financial

"6 | Shared Voting Power 480,653.00"

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

"Sole Dispositive Power 0.00 8 | Shared Dispositive Power 480,653.00"

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

"11 5.1 % 12"

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.

Schedule 13G regulatory

"have filed Amendment No. 2 to a Schedule 13G"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What percentage of LeonaBio, Inc. (LONA) does Anders Hove beneficially own according to this Schedule 13G/A?

According to the filing, Anders Hove may be deemed to beneficially own 1,492,521 shares of LeonaBio, Inc. common stock, representing 12.1% of the outstanding shares. This ownership is through his role as Manager of the Acorn Capital Advisors general partner entities.

How many LeonaBio (LONA) shares does Acorn Bioventures, L.P. report owning?

Acorn Bioventures, L.P. reports beneficial ownership of 480,653 shares of LeonaBio common stock, which equals 5.1% of the class. Voting and dispositive powers over these shares are reported as shared through its general partner Acorn Capital Advisors GP, LLC.

What is the ownership stake of Acorn Bioventures 2, L.P. in LeonaBio (LONA)?

Acorn Bioventures 2, L.P. reports beneficial ownership of 663,763 shares of LeonaBio common stock, representing 7.0% of the outstanding shares. Shared voting power is reported, with its general partner Acorn Capital Advisors GP 2, LLC involved in that authority.

What share count did LeonaBio (LONA) use to calculate ownership percentages in this Schedule 13G/A?

The reported ownership percentages are calculated using 9,421,663 shares of LeonaBio common stock outstanding as of August 12, 2026. This share count is referenced from the company’s second quarter 2026 Form 10-Q filed on August 14, 2026.

Which entities are jointly filing this Schedule 13G/A regarding LeonaBio (LONA)?

The joint filers are Acorn Bioventures, L.P., Acorn Capital Advisors GP, LLC, Acorn Bioventures 2, L.P., Acorn Capital Advisors GP 2, LLC, and Anders Hove. All list a principal business office at 420 Lexington Avenue, Suite 2626, New York, New York.

Does this LeonaBio (LONA) Schedule 13G/A report sole or shared voting power over the shares?

The reporting persons show 0 shares with sole voting power and report shared voting power over all disclosed shares: 480,653 for Acorn Bioventures, L.P., 663,763 for Acorn Bioventures 2, L.P., and 1,492,521 in total for Anders Hove through his managerial roles.

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

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Available on EDGAR 08/20/2026 - 10:34 AM EDT Accepted by SEC EDGAR 08/20/2026 - 10:34 AM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

LeonaBio, Inc.

(Name of Issuer)

Common Stock, $0.0001 Par Value

(Title of Class of Securities)

04746L203

(CUSIP Number)

08/18/2026

(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): 04746L203

1

Names of Reporting Persons

ACORN BIOVENTURES, L.P.

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 480,653.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 480,653.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

480,653.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP Number(s): 04746L203

1

Names of Reporting Persons

ACORN CAPITAL ADVISORS GP, 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 480,653.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 480,653.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

480,653.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 04746L203

1

Names of Reporting Persons

ACORN BIOVENTURES 2, L.P.

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 663,763.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 663,763.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

663,763.00

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)

7.0 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP Number(s): 04746L203

1

Names of Reporting Persons

Acorn Capital Advisors GP 2, 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 663,763.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 663,763.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

663,763.00

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)

7.0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 04746L203

1

Names of Reporting Persons

Anders Hove

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,492,521.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,492,521.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,492,521.00

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)

12.1 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: LeonaBio, Inc.
(b)	Address of issuer's principal executive offices: 18706 NORTH CREEK PARKWAY, SUITE 104, BOTHELL, WASHINGTON, 98011.
Item 2.
(a)	Name of person filing: Acorn Bioventures, L.P. Acorn Capital Advisors GP, LLC Acorn Bioventures 2, L.P. Acorn Capital Advisors GP2, LLC Anders Hove
(b)	Address or principal business office or, if none, residence: 420 Lexington Avenue, Suite 2626, New York, New York 10170
(c)	Citizenship: Acorn Bioventures, L.P. and Acorn Bioventures 2, L.P. are both Delaware limited partnerships. Acorn Capital Advisors GP, LLC and Acorn Capital Advisors GP 2, LLC are both Delaware limited liability companies. Anders Hove is a citizen of the United States of America.
(d)	Title of class of securities: Common Stock, $0.0001 Par Value
(e)	CUSIP No.: 04746L203
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 Items 4(a) - (c) is set forth in Rows (5) - (11) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each Reporting Person.
(b)	Percent of class: The percentages set forth herein are calculated based upon 9,421,663 shares of Common Stock outstanding as of August 12, 2026 as reported in the firm's 2nd Quarter 2026 Form 10Q filed on August 14, 2026.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Acorn Capital Advisors GP, LLC is the General Partner of Acorn Bioventures, L.P. and may be deemed to beneficially own the shares of Common Stock beneficially owned by Acorn Bioventures, L.P. Acorn Capital Advisors GP 2, LLC is the General Partner of Acorn Bioventures 2, L.P. and may be deemed to beneficially own the shares of Common Stock beneficially owned by Acorn Bioventures 2, L.P.
	(ii) Shared power to vote or to direct the vote: Anders Hove, in his capacity as Manager of each of Acorn Capital Advisors GP, LLC and Acorn Capital Advisors GP 2, LLC, may be deemed to beneficially own the shares beneficially owned by each of Acorn Capital Advisors GP, LLC and Acorn Capital Advisors GP 2, LLC.
	(iii) Sole power to dispose or to direct the disposition of: N/A
	(iv) Shared power to dispose or to direct the disposition of: N/A
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.

ACORN BIOVENTURES, L.P.

Signature:	Anders Hove
Name/Title:	Manager of General Partner
Date:	08/20/2026

ACORN CAPITAL ADVISORS GP, LLC

Signature:	Anders Hove
Name/Title:	Manager
Date:	08/20/2026

ACORN BIOVENTURES 2, L.P.

Signature:	Anders Hove
Name/Title:	Manager of General Partner
Date:	08/20/2026

Acorn Capital Advisors GP 2, LLC

Signature:	Anders Hove
Name/Title:	Manager
Date:	08/20/2026

Anders Hove

Signature:	Anders Hove
Name/Title:	Individually
Date:	08/20/2026