Infinite Eagle Acquisition Corp. Schedule 13G: Adage Capital Management, L.P., together with Robert Atchinson and Phillip Gross, report shared beneficial ownership of 2,250,000 Class A ordinary shares, representing 6.45% of the class. The percentage is calculated using 34,895,000 Class A Ordinary Shares outstanding as of March 23, 2026. The reported shares are directly held by Adage Capital Partners, L.P., for which ACM acts as investment manager; Messrs. Atchinson and Gross are reported in managerial roles for the related entities.
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Insights
Adage reports a 6.45% passive stake in IEAG via shared holdings.
The filing lists 2,250,000 shares and cites an outstanding base of March 23, 2026 totaling 34,895,000 shares. The ownership is held by Adage Capital Partners, L.P., with ACM as investment manager, and Messrs. Atchinson and Gross identified in managerial roles.
Because this is a Schedule 13G reporting a large institutional position, it signals passive investment disclosure rather than an active control intent; future filings could update status if voting or disposition powers change.
Filing clarifies voting and dispositive power as shared among reporting entities.
The cover rows show Shared Voting Power 2,250,000 and Shared Dispositive Power 2,250,000. The narrative ties beneficial ownership to entities (ACP, ACM) and identifies the reporting persons' managerial roles, which is standard attribution language for pooled investment vehicles.
Governance impact depends on collective actions by the holder; the statement makes no claim of control or plans to change voting disposition.
Key Figures
Reported shares:2,250,000 sharesPercent of class:6.45%Shares outstanding:34,895,000 shares+1 more
4 metrics
Reported shares2,250,000 sharesAmount beneficially owned by Adage/Reporting Persons
Percent of class6.45%Calculated using outstanding shares as of March 23, 2026
Shares outstanding34,895,000 sharesOutstanding Class A Ordinary Shares as of <date>March 23, 2026</date>
CUSIPG4802J103Class A ordinary shares CUSIP
Key Terms
Schedule 13G, Beneficial ownership, Shared Dispositive Power
3 terms
Schedule 13Gregulatory
"Item 1. Name of issuer: Infinite Eagle Acquisition Corp.; form identified as 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.
Beneficial ownershipfinancial
"Item 4. Ownership (a) Amount beneficially owned: The information required by Item 4(a) is set forth"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Shared Dispositive Powerregulatory
"Cover rows list Shared Dispositive Power 2,250,000.00 for Reporting Persons"
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Infinite Eagle Acquisition Corp.
(Name of Issuer)
Class A ordinary shares, $0.0001 par value
(Title of Class of Securities)
G4802J103
(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):
G4802J103
1
Names of Reporting Persons
Adage Capital Management, 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
2,250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,250,000.00
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)
6.45 %
12
Type of Reporting Person (See Instructions)
IA, PN
SCHEDULE 13G
CUSIP Number(s):
G4802J103
1
Names of Reporting Persons
Robert Atchinson
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
2,250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,250,000.00
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)
6.45 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
CUSIP Number(s):
G4802J103
1
Names of Reporting Persons
Phillip Gross
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
2,250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,250,000.00
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)
6.45 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Infinite Eagle Acquisition Corp.
(b)
Address of issuer's principal executive offices:
955 Fifth Avenue, New York, NY 10075
Item 2.
(a)
Name of person filing:
This statement is filed by:
(i) Adage Capital Management, L.P., a Delaware limited partnership ("ACM"), as the investment manager of Adage Capital Partners, L.P., a Delaware limited partnership ("ACP"), with respect to the Class A ordinary shares, $0.0001 par value ("Class A Ordinary Shares") of Infinite Eagle Acquisition Corp., a Cayman Islands exempted company (the "Company") directly held by ACP;
(ii) Robert Atchinson ("Mr. Atchinson"), as (1) managing member of Adage Capital Advisors, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACA"), managing member of Adage Capital Partners GP, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACPGP"), general partner of ACP, and (2) managing member of Adage Capital Partners, L.L.C., a Delaware limited liability company ("ACPLLC"), general partner of ACM, with respect to the Class A Ordinary Shares directly held by ACP; and
(iii) Phillip Gross ("Mr. Gross"), as (1) managing member of ACA, managing member of ACPGP, and (2) managing member of ACPLLC, general partner of ACM, with respect to the Class A Ordinary Shares directly held by ACP.
The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party.
The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.
(b)
Address or principal business office or, if none, residence:
The address of the business office of each of the Reporting Persons is 200 Clarendon Street, 52nd Floor, Boston, Massachusetts 02116.
(c)
Citizenship:
ACM is a limited partnership organized under the laws of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United States.
(d)
Title of class of securities:
Class A ordinary shares, $0.0001 par value
(e)
CUSIP Number(s):
G4802J103
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 of the Reporting Persons and is incorporated herein by reference.
The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 34,895,000 Class A Ordinary Shares outstanding as of March 23, 2026, as reported in the Company's Annual Report on Form 10-K for the year ended December 31, 2025, filed with the Securities and Exchange Commission on March 23, 2026.
(b)
Percent of class:
6.45%
(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 of the Reporting Persons and is incorporated herein by reference.
(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 of the Reporting Persons and is incorporated herein by reference.
(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 of the Reporting Persons and is incorporated herein by reference.
(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 of the Reporting Persons and is incorporated herein by reference.
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.
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.
See Item 2(a).
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.
Adage Capital Management, L.P.
Signature:
/s/ Robert Atchinson
Name/Title:
By: Adage Capital Partners, L.L.C., its General Partner, By: Robert Atchinson, its Managing Member
What stake does Adage report in Infinite Eagle Acquisition Corp. (IEAG)?
Adage reports ownership of 2,250,000 Class A ordinary shares, equal to 6.45% of the class. The percentage is calculated using 34,895,000 shares outstanding as of March 23, 2026.
Who holds the shares reported by Adage in IEAG?
The shares are directly held by Adage Capital Partners, L.P., for which Adage Capital Management, L.P. acts as investment manager. Robert Atchinson and Phillip Gross are reported in managerial roles for the related entities.
Does the filing indicate Adage seeks control of IEAG?
No control claim is made; the Schedule 13G describes the position as a beneficial interest through investment entities. The filing does not state any intent to assume control or change voting authority.
What voting and disposition powers are reported for the 2,250,000 shares?
The cover rows show Shared Voting Power 2,250,000 and Shared Dispositive Power 2,250,000. Sole voting and sole dispositive powers are reported as 0 for the reporting persons.
What record date or outstanding share count does the filing use for the 6.45% calculation?
The percentage is calculated using an outstanding share base of 34,895,000 Class A Ordinary Shares reported as of March 23, 2026 in the Company’s Form 10-K for the year ended December 31, 2025.
