Rubric Capital reports 0% Telesat (TSAT) stake in latest Schedule 13G/A

Rhea-AI Filing Summary

Rubric Capital Management LP and David Rosen report that they no longer beneficially own any Class A Common Shares or Class B Variable Voting Shares of Telesat Corporation. Each reporting person lists 0.00 shares with 0% of the class, and no sole or shared voting or dispositive power over the securities.

The filing confirms that their holdings have fallen to 5 percent or less of the class, and discloses their business address in New York and citizenship/organization details (Delaware partnership for Rubric Capital and U.S. citizen for Mr. Rosen).

Key Figures

Beneficial ownership percentage: 0% Sole voting power: 0.00 Shared voting power: 0.00 +2 more

5 metrics

Beneficial ownership percentage 0% Reported ownership of Telesat common shares by each reporting person

Sole voting power 0.00 Shares over which each reporting person has sole power to vote

Shared voting power 0.00 Shares over which each reporting person has shared power to vote

Sole dispositive power 0.00 Shares over which each reporting person has sole power to dispose

Shared dispositive power 0.00 Shares over which each reporting person has shared power to dispose

Key Terms

beneficially owned, dispositive power, Class B Variable Voting Shares, Ownership of 5 percent or less of a Class, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: The information required by Items 4(a) - (c)..."

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.

dispositive power financial

"Sole Dispositive Power 0.00 8 | Shared Dispositive Power 0.00"

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.

Class B Variable Voting Shares financial

"Class A Common Shares and Class B Variable Voting Shares, no par value per share"

Ownership of 5 percent or less of a Class financial

"Item 5. | Ownership of 5 Percent or Less of a Class."

Schedule 13G regulatory

"Ownership of 5 percent or less of a class"

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

What ownership in Telesat (TSAT) does Rubric Capital report in this Schedule 13G/A?

Rubric Capital reports 0.00 shares of Telesat Corporation and a 0% beneficial ownership stake, indicating it no longer has voting or dispositive power over the company’s Class A or Class B shares.

Who are the reporting persons in this Telesat (TSAT) Schedule 13G/A amendment?

The reporting persons are Rubric Capital Management LP, investment adviser to certain funds, and David Rosen, Managing Member of Rubric Capital Management GP LLC, the general partner of Rubric Capital.

What classes of Telesat (TSAT) securities are covered in this Schedule 13G/A?

The filing covers Telesat’s Class A Common Shares and Class B Variable Voting Shares, each with no par value, collectively referred to as the company’s common shares for ownership reporting purposes.

What voting and dispositive power does Rubric Capital report over Telesat (TSAT) shares?

Rubric Capital reports 0.00 sole voting power, 0.00 shared voting power, 0.00 sole dispositive power, and 0.00 shared dispositive power, reflecting no current authority over Telesat’s reported shares.

What does “Ownership of 5 percent or less of a class” mean for Telesat (TSAT) here?

The filing’s “Ownership of 5 percent or less of a class” disclosure confirms the reporting persons’ beneficial ownership is now 0% of Telesat’s relevant share classes, below the 5% reporting threshold.

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

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Available on EDGAR 08/14/2026 - 04:15 PM Accepted by SEC EDGAR 08/14/2026 - 04:06 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Telesat Corporation

(Name of Issuer)

Class A Common Shares and Class B Variable Voting Shares, no par value per share

(Title of Class of Securities)

879512309

(CUSIP Number)

06/30/2026

(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): 879512309

1

Names of Reporting Persons

Rubric Capital Management 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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13G

CUSIP Number(s): 879512309

1

Names of Reporting Persons

David Rosen

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 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Telesat Corporation
(b)	Address of issuer's principal executive offices: 160 Elgin Street, Suite 2100, Ottawa, A6 K2P 2P7
Item 2.
(a)	Name of person filing: This statement is filed by: (i) Rubric Capital Management LP ("Rubric Capital"), the investment adviser to certain investment funds and/or accounts (collectively, the "Rubric Funds") that held the shares of Class A Common Shares and Class B Variable Voting Shares, no par value per share ("Class A Common Shares" and "Class B Variable Voting Shares", respectively, and collectively, the "Common Shares") of Telesat Corporation, a Canadian corporation (the "Issuer") reported herein; and (ii) David Rosen ("Mr. Rosen"), Managing Member of Rubric Capital Management GP LLC, the general partner of Rubric Capital The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons."
(b)	Address or principal business office or, if none, residence: The address of the principal business office of each of the Reporting Persons is 155 East 44th St, Suite 1630, New York, NY 10017.
(c)	Citizenship: Rubric Capital is a Delaware limited partnership. Mr. Rosen is a citizen of the United States of America.
(d)	Title of class of securities: Class A Common Shares and Class B Variable Voting Shares, no par value per share
(e)	CUSIP No.: 879512309
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 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(b)	Percent of class: 0%
(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.
	Ownership of 5 percent or less of a class
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.

Rubric Capital Management LP

Signature:	/s/ Michael Nachmani
Name/Title:	Michael Nachmani / Chief Operating Officer
Date:	08/14/2026

David Rosen

Signature:	/s/ David Rosen
Name/Title:	DAVID ROSEN
Date:	08/14/2026