ImageneBio: Blue Owl reports 9.11% stake in amendment

Available on EDGAR 11/13/2026 - 04:31 PM EST Accepted by SEC EDGAR 11/13/2026 - 04:30 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

ImageneBio, Inc. (IMA) shareholder Blue Owl Capital Holdings LP amended its ownership report to state that it beneficially owned 1,135,081 common shares, or 9.11% of the class, with sole voting and dispositive power over those shares. Blue Owl said the reported amount includes 217,389 shares acquired from ImageneBio in a private placement connected with the initial public offering; those shares were omitted from its initial statement and first amendment.

Blue Owl stated that the report is not an admission of beneficial ownership for purposes of Section 13(d), Section 13(g), or any other purpose. ImageneBio had 12,456,281 common shares outstanding as of October 31, 2026.

Key Figures

Reported beneficially owned shares: 1,135,081 shares Reported ownership percentage: 9.11% Shares outstanding: 12,456,281 shares +1 more

4 metrics

Reported beneficially owned shares 1,135,081 shares Blue Owl reported sole voting and dispositive power over these shares.

Reported ownership percentage 9.11% Percentage of ImageneBio common stock.

Shares outstanding 12,456,281 shares ImageneBio common stock outstanding as of October 31, 2026.

Private-placement shares included 217,389 shares Acquired from ImageneBio in connection with its initial public offering; omitted from Blue Owl’s initial statement and first amendment.

Key Terms

beneficially owned, sole voting power, sole dispositive power, Rule 13d-4

4 terms

beneficially owned regulatory

"Amount beneficially owned: 1,135,081"

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.

sole voting power regulatory

"Sole Voting Power 1,135,081"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power regulatory

"Sole Dispositive Power 1,135,081"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Rule 13d-4 regulatory

"Pursuant to Rule 13d-4 of the Act"

FAQ

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

How many ImageneBio (IMA) shares does Blue Owl report owning?

Blue Owl Capital Holdings LP reported 1,135,081 shares, or 9.11% of ImageneBio’s common stock. It reported sole voting and dispositive power over those shares and stated that its report is not an admission of beneficial ownership.

How many ImageneBio shares were omitted from Blue Owl’s earlier ownership statements?

The amended report includes 217,389 shares acquired from ImageneBio in a private placement connected with the company’s initial public offering. Blue Owl said those shares were omitted from its initial statement and first amendment.

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

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

ImageneBio, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

45175G207

(CUSIP Number)

09/30/2026

(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): 45175G207

1

Names of Reporting Persons

Blue Owl Capital Holdings LP

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 1,135,081.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,135,081.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,135,081.00

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)

9.11 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: The reported percentage is calculated based on 12,456,281 shares of Common Stock outstanding as of October 31, 2026, as reported on the Issuer's 10-Q filed with the SEC on November 9, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ImageneBio, Inc.
(b)	Address of issuer's principal executive offices: 12526 High Bluff Drive, Suite 345, San Diego, CA 92130
Item 2.
(a)	Name of person filing: This Statement is filed by Blue Owl Capital Holdings LP, referred to herein as the "Reporting Person."
(b)	Address or principal business office or, if none, residence: 399 Park Avenue, New York, New York 10022
(c)	Citizenship: See response to row 4 on the cover page.
(d)	Title of class of securities: Common Stock, $0.001 par value
(e)	CUSIP No.: 45175G207
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: See response to row 9 on the cover page. The reported securities include 217,389 shares of Common Stock acquired from the Issuer in a private placement in connection with the Issuer's initial public offering, which were inadvertently omitted from the initial Schedule 13G and first amendment thereto filed by the Reporting Person on February 12, 2026 and May 14, 2026, respectively. Pursuant to Rule 13d-4 of the Act, the Reporting Person declares that filing this Statement shall not be deemed an admission that the Reporting Person is a beneficial owner of the reported securities, for purposes of Section 13(d) and/or Section 13(g) or for any other purpose.
(b)	Percent of class: See response to row 11 on the cover page.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See response to row 5 on the cover page.
	(ii) Shared power to vote or to direct the vote: See response to row 6 on the cover page.
	(iii) Sole power to dispose or to direct the disposition of: See response to row 7 on the cover page.
	(iv) Shared power to dispose or to direct the disposition of: See response to row 8 on the cover page.
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 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.

Blue Owl Capital Holdings LP

Signature:	/s/ Karen Hager
Name/Title:	Karen Hager / Chief Compliance Officer
Date:	11/13/2026