Blue Owl Capital (IMA) reports 959,337 shares, 8.51% stake in ImageneBio

Rhea-AI Filing Summary

Blue Owl Capital Holdings filed Amendment No. 1 to a Schedule 13G/A reporting beneficial ownership in ImageneBio, Inc.

The filing states the Reporting Person beneficially owns 959,337 shares of Common Stock, equal to 8.51% of the class, calculated using 11,279,130 shares outstanding as of April 30, 2026 (per the issuer's 10-Q filed May 7, 2026). The cover page lists sole voting and dispositive power over the 959,337 shares. The statement includes a Rule 13d-4 declaration that filing is not an admission of beneficial ownership.

Insights

Institutional Ownership Analyst

Blue Owl reports an 8.51% stake in ImageneBio, per the amended Schedule 13G/A.

The filing discloses a 959,337-share position and attributes sole voting and dispositive power to the Reporting Person. The percentage is explicitly calculated from 11,279,130 shares outstanding as of April 30, 2026, providing a clear basis for the stake size.

Holder activity and any disposition plans are not stated; subsequent Schedules or amendments would show changes in position or intent.

SEC Compliance Specialist

The amendment follows Schedule 13G/A form mechanics and cites Rule 13d-4 qualifications.

The statement includes the Rule 13d-4 clause that the filing is not an admission of beneficial ownership, consistent with passive investor profiles. The Reporting Person's address and CUSIP (45175G207) are provided on the cover information.

For compliance monitoring, watch for further amendments that would indicate filing status changes or shifts in voting/dispositive power.

Key Figures

Reported shares beneficially owned: 959,337 shares Percent of class: 8.51% Shares outstanding used in calculation: 11,279,130 shares +1 more

4 metrics

Reported shares beneficially owned 959,337 shares Amount listed on cover page and Item 4(a)

Percent of class 8.51% Calculated using shares outstanding as of <date> April 30, 2026

Shares outstanding used in calculation 11,279,130 shares Reported as of <date> April 30, 2026 per issuer's 10-Q filed May 7, 2026

CUSIP 45175G207 ImageneBio Common Stock listed on cover

Key Terms

Schedule 13G/A, Rule 13d-4, Beneficially owned

3 terms

Schedule 13G/A regulatory

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

Rule 13d-4 regulatory

"Pursuant to Rule 13d-4 of the Act, the Reporting Person declares"

Beneficially owned financial

"Amount beneficially owned: See response to row 9 on the cover page"

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.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

ImageneBio, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

45175G207

(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): 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 959,337.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 959,337.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

959,337.00

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)

8.51 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: The reported percentage is calculated based on 11,279,130 shares of Common Stock outstanding as of April 30, 2026, as reported on the Issuer's 10-Q filed with the Securities and Exchange Commission on May 7, 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. 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:	05/13/2026

FAQ

What stake does Blue Owl Capital Holdings report in ImageneBio (IMA)?

Blue Owl reports beneficial ownership of 959,337 shares, representing 8.51% of ImageneBio common stock based on 11,279,130 shares outstanding as of April 30, 2026.

How was the 8.51% ownership percentage calculated for IMA?

The percentage is calculated using 11,279,130 shares outstanding as of April 30, 2026, a figure cited from ImageneBio's 10-Q filed on May 7, 2026, per the filing cover page comment.

Does the Schedule 13G/A amendment state whether Blue Owl has voting power over the shares?

Yes; the cover page shows Blue Owl has sole voting power and sole dispositive power over 959,337 shares, with 0 shared voting or dispositive power.

Does the filing admit Blue Owl is a beneficial owner under Sections 13(d) or 13(g)?

The filing includes a Rule 13d-4 declaration stating that filing the statement shall not be deemed an admission that the Reporting Person is a beneficial owner for purposes of Section 13(d) or 13(g).

What identifier and issuer details are included in the filing for ImageneBio?

The filing lists ImageneBio Common Stock, par value $0.001, CUSIP 45175G207, and the issuer address at 12526 High Bluff Drive, Suite 345, San Diego, CA 92130.