Telesat Corporation (TSAT)

Nasdaq: TSAT · Communications Services, NEC · Ottawa, ON · filing with the SEC since 2021

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Grade3.6

◀ Past 4.2● Present 3.4▶ Future 3.4

1 est.

Overview Business Financials Grade Forecast Sentiment Ownership People Filings Patents Chart

Who owns Telesat Corporation

As filed with the SEC

Holders of 5% or more

Mark H. Rachesky, M.D. holds 35.5% of Class B Variable Voting Shares, No Par Value Per Share, as its SCHEDULE 13D/A filed Jul 9, 2026 says.

Directors and officers

report now, of 0 people on the record since 2023. Their holdings as a group are not read here.

Institutions as a whole

n/a

The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.

Holders of 5% or moreshare of the class, as filed

Mark H. Rachesky, M.D.

SCHEDULE 13D/A · filed Jul 9, 2026 · Class B Variable Voting Shares, No Par Value Per Share

35.5%

GAMCO Asset Management Inc.

SCHEDULE 13D/A · filed Apr 2, 2026 · Class A common and Class B variable voting shares, no par value per share · 12.3% in Jun 3, 2025

11.6%

Greywolf Opportunities Master Fund II LP

SCHEDULE 13G/A · filed Feb 12, 2025 · Class A common and Class B variable voting shares, no par value per share (the "Shares")

6.2%

Daniel Lau

SCHEDULE 13G/A · filed May 15, 2025 · Class A Common Shares and Class B Variable Voting Shares · reported falling below 5%

under 5%

Heard Capital LLC

SCHEDULE 13G/A · filed May 15, 2026 · Class B Variable Voting Shares · reported falling below 5%, from 8.37% in Feb 17, 2026

under 5%

Rubric Capital Management LP

SCHEDULE 13G/A · filed Aug 14, 2026 · Class A Common Shares and Class B Variable Voting Shares, no par value per share · reported falling below 5%

under 5%

What TSAT reports owning in othersstakes of 5% or more, and other ties

12 subsidiaries in 3 countries, from the list filed with the 20-F filed Mar 17, 2026.

Insider tradesForm 4

0sales

0purchases

0sales on a scheduled plan

0people selling

$0sold, in dollars

$0bought, in dollars

Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.

By calendar yearSoldBought

No open-market trade is on the record for these years.

Dollars as filed, summed by the transaction date.

People who traded in the window

No one on the roster filed an open-market trade in the window.

SI Assistanton TSAT · research, not advice