Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
MHR FUND MANAGEMENT LLC - 08 Jul 2026 SCHEDULE 13D/A Report for Telesat Corporation Class B Variable Voting Shares, No Par Value Per Share (TSAT)
- Filing manager
- MHR FUND MANAGEMENT LLC
- Reporting owner
- MARK H. RACHESKY, M.D.
- Beneficially owned shares
- 18,096,228 shares
- Large-stake signal
-
Ownership
36%Beneficial ownership of this reported class.
Shares
18,096,228 sharesShares beneficially owned as disclosed.
Event date
08 Jul 2026Date tied to the ownership event or amendment.
Accepted by SEC
09 Jul 2026EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 36%
- Symbol
- TSAT
- Shares outstanding
- 50,975,290 shares
- SEC form
- SCHEDULE 13D/A
- Accepted by SEC
- 09 Jul 2026, 07:30:03 UTC
- Event date
- 08 Jul 2026
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
4 source fields
Key filing fact
MHR FUND MANAGEMENT LLC disclosed 36% ownership in Telesat Corporation Class B Variable Voting Shares, No Par Value Per Share (TSAT) on 08 Jul 2026.
Key facts
- MHR FUND MANAGEMENT LLC filed SCHEDULE 13D/A for Telesat Corporation Class B Variable Voting Shares, No Par Value Per Share (TSAT).
- Disclosed ownership: 36%.
- Date of event: 08 Jul 2026.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 09 Jul 2026, 07:30.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (15)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| MHR INSTITUTIONAL ADVISORS LLC | 5.2% | 2,634,891 | 2,634,891 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHRC I LLC | 5.2% | 2,634,891 | 2,634,891 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR INSTITUTIONAL PARTNERS IIA LP | 0% | 0 | 0 | 0 | By: MHR Institutional Advisors II LLC, its general partner, By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR INSTITUTIONAL ADVISORS II LLC | 5.4% | 2,770,676 | 2,770,676 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHRC II LLC | 5.4% | 2,770,676 | 2,770,676 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR INSTITUTIONAL PARTNERS III LP | 0% | 0 | 0 | 0 | By: MHR Institutional Advisors III LLC, its general partner, /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR INSTITUTIONAL ADVISORS III LLC | 6.6% | 3,368,027 | 3,368,027 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR SAT SUBHOLDCO B | 5.6% | 2,842,143 | 2,842,143 | 0 | By: MHR Sun GP LLC, its General Partner, By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR SAT HOLDCO B | 6.3% | 3,213,938 | 3,213,938 | 0 | By: MHR Sun GP LLC, its General Partner, By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR SUN GP LLC | 13% | 6,742,088 | 6,742,088 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| The Rachesky Revocable Trust | 13% | 6,742,088 | 6,742,088 | 0 | By: Mark H. Rachesky, its Trustee, By: /s/ Mark H. Rachesky | Mark H. Rachesky | |
| MHR SUN III LP | 6.6% | 3,368,027 | 3,368,027 | 0 | By: MHR Institutional Advisors III LLC, its General Partner, By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MHR FUND MANAGEMENT LLC | 35% | 18,035,092 | 18,035,092 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | 0001277742 |
| MHR HOLDINGS LLC | 35% | 18,035,092 | 18,035,092 | 0 | By: /s/ Janet Yeung | Janet Yeung, Authorized Signatory | |
| MARK H. RACHESKY, M.D. | 36% | 18,096,228 | 18,096,228 | 0 | By: /s/ Janet Yeung | Attorney in Fact |
CIK / CUSIP context first