O'Connor holds 9.9% of Electra Battery Materials (ELBM) after March 31, 2026

Rhea-AI Filing Summary

Electra Battery Materials Corp ownership disclosure: O'Connor Alternative Investments LLC reports beneficial ownership of 9,278,996 common shares, representing 9.9% of the class as of 03/31/2026. The filing shows shared voting and dispositive power over those shares. The submission is signed by Charles Mathys, CCO, dated 04/29/2026.

Key Figures

Beneficial ownership: 9,278,996 shares Percent of class: 9.9% As-of date: 03/31/2026 +3 more

6 metrics

Beneficial ownership 9,278,996 shares Amount beneficially owned as reported in Item 4

Percent of class 9.9% Percent of common shares as reported in Item 4

As-of date 03/31/2026 Date tied to ownership and transaction closing

Shared voting power 9,278,996 shares Shared power to vote or direct the vote (Item 4)

Shared dispositive power 9,278,996 shares Shared power to dispose or direct disposition (Item 4)

CUSIP 28474P706 Security identifier listed on the cover

Key Terms

Schedule 13G, beneficially owned, shared dispositive power, CUSIP

4 terms

Schedule 13G regulatory

"Item 1. | (a) | Name of issuer: Electra Battery Materials Corp"

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.

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 9278996"

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 dispositive power financial

"(iv) Shared power to dispose or to direct the disposition: 9,278,996"

CUSIP other

"Common Shares, no par value 28474P706 03/31/2026"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Electra Battery Materials Corp

(Name of Issuer)

Common Shares, no par value

(Title of Class of Securities)

28474P706

(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): 28474P706

1

Names of Reporting Persons

O'Connor Alternative Investments 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 9,278,966.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 9,278,996.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,278,996.00

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)

9.9 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: UBS Asset Management (Americas) LLC announced in May 2025 that it would be selling its O'Connor business unit to Cantor Fitzgerald Asset Management. This transaction closed on March 31, 2026, with O'Connor Alternative Investments, LLC (the legal entity within Cantor Fitzgerald Asset Management) becoming the investment adviser with complete discretionary authority for the funds/accounts involved in this transaction at that time.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Electra Battery Materials Corp
(b)	Address of issuer's principal executive offices: SUITE 3200, BAY ADELAIDE CENTRE, 40 TEMPERANCE ST., TORONTO, ONTARIO, CANADA, M5H 0B4
Item 2.
(a)	Name of person filing: O'Connor Alternative Investments LLC
(b)	Address or principal business office or, if none, residence: 110 E. 59th St. New York, NY 10022
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Shares, no par value
(e)	CUSIP Number(s): 28474P706
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: 9278996
(b)	Percent of class: 9.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 9,278,996
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 9,278,996
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.

O'Connor Alternative Investments LLC

Signature:	Charles Mathys
Name/Title:	CCO
Date:	04/29/2026

FAQ

What stake does O'Connor Alternative Investments hold in Electra Battery Materials (ELBM)?

O'Connor Alternative Investments LLC beneficially owns 9,278,996 shares, equal to 9.9% of Electra Battery Materials' common stock as stated in the filing dated 03/31/2026.

Does O'Connor have voting control over the ELBM shares?

The filing reports shared voting power of 9,278,996 shares, with no sole voting power. This indicates voting authority is exercised jointly, per the disclosed ownership table.

When did O'Connor become the investment adviser with discretionary authority?

The filing states that the transaction closing on 03/31/2026 made O'Connor Alternative Investments, LLC the investment adviser with complete discretionary authority for the affected funds/accounts.

Who signed the Schedule 13G for O'Connor and when?

The Schedule 13G was signed by Charles Mathys, CCO, with the signature dated 04/29/2026, certifying the reported ownership and powers.

What CUSIP identifies Electra Battery Materials common shares in this filing?

The common shares are identified by CUSIP 28474P706 in the Schedule 13G filing for Electra Battery Materials Corp.