Comtech Telecommunications Corp: 5%+ holders

As of November 10, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Comtech Telecommunications Corp. The largest reported stake is Magnetar Financial LLC's, at 42.78%. 8 filings are on record since July 23, 2025 (Schedule 13D/A, June 17, 2026).

QVT Financial LP also filed stake reports on 4 other companies ↓

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Key facts

• Filing 2026-07-31 · Reporting person: Vanguard Capital Management · Sole voting: 196,179 · Shared voting: 0 · Sole dispositive: 1,503,083 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-31
• Filing 2026-07-28 · Reporting person: Royce & Associates LP · Sole voting: 162,953 · Shared voting: 0 · Sole dispositive: 162,953 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-28
• Filing 2026-06-17 · Reporting person: Magnetar Financial LLC · Sole voting: 0 · Shared voting: 22,402,628 · Sole dispositive: 0 · Shared dispositive: 22,402,628 · SCHEDULE 13D/A, 2026-06-17
• Filing 2026-06-16 · Reporting person: White Hat Strategic Partners LP · Sole voting: 0 · Shared voting: 3,987,090 · Sole dispositive: 0 · Shared dispositive: 3,987,090 · SCHEDULE 13D/A, 2026-06-16
• Filed 2026-05-15 · Holder: QVT Financial LP · Percent: 5.71% · SCHEDULE 13G

Comtech Telecommunications Corp has 8 Schedule 13D or 13G filings on record since 2025-07-23. 4 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on Comtech Telecommunications Corp and the records around it.

Comtech Telecommunications Corp elsewhere on the record

• Leadership changes Jun 2026
• Who owns it

Companies that share a holder

• QVT Financial LP also filed stake reports on 4 other companies: Allot Ltd. (Aug 2026), Real Asset Acquisition Corp. (Aug 2026), Roivant Sciences Ltd. (Aug 2025)
• NEEDHAM INVESTMENT MANAGEMENT L.L.C. also filed stake reports on 13 other companies: Aspen Aerogels Inc (Aug 2026), Elmet Group Co. (Aug 2026), LANTRONIX INC (Jul 2026)
• ROYCE & ASSOCIATES LP also filed stake reports on 61 other companies: Aetherion Technoligies Inc. (Oct 2026), Andersen Group Inc (Oct 2026), NN, Inc. (Oct 2026)

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What the Full Report on Comtech Telecommunications Corp covers

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5. The Money: Funding, Valuation, Runway

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Voting and dispositive power, as filed

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The latest filing identifies Comtech Telecommunications Corp by CUSIP 205826209 and gives its principal executive office as 305 N 54th Street, Chandler, AZ 85226 (SCHEDULE 13G, 2026-07-31).

Purpose of Transaction (Item 4)

White Hat Capital Partners LP

Amendment No. 3 to the Subordinated Credit Agreement In connection with the entry by the Issuer, on June 14, 2026, into a Securities Purchase Agreement (the "Purchase Agreement" and the transactions contemplated by the Purchase Agreement the "Transactions"), by and among the Issuer, certain direct or indirect subsidiaries of the Issuer named therein and Wavestream Corporation, a Delaware corporation and an affiliate of Gilat Satellite Networks Ltd, a company incorporated under the laws of the State of Israel, on June 14, 2026, the Issuer entered into an Amendment No. 3 to Subordinated Credit Agreement ("Amendment No. 3 to Subordinated Credit Agreement") with the guarantors party thereto, the lenders party thereto and the Subordinated Agent, which amends that certain Subordinated Credit Agreement, dated as of October 17, 2024, among the Issuer, the guarantors party thereto, the lenders party thereto and the Subordinated Agent (as amended by that certain Waiver and Amendment No. 1, dated as of March 3, 2025, and that certain Amendment No. 2 to Subordinated Credit Agreement, dated as of July 21, 2025, the "Existing Subordinated Credit Agreement" and, as amended by the Subordinated Amendment No. 3, the "Amended Subordinated Credit Agreement"). Pursuant to Amendment No. 3 to Subordinated Credit Agreement, the Subordinated Agent (a) acknowledges that the form of, and the terms and conditions set forth in, the Purchase Agreement and certain ancillary agreements related to the …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-06-16; the filing has the rest

Magnetar Financial LLC

Item 4 of the Schedule 13D is hereby amended and supplemented as follows: Amended Subordinated Credit Agreement On June 14, 2026, Comtech Telecommunications Corp. ("Comtech" or the "Company") entered into the Amendment No. 3 to Subordinated Credit Agreement (the "Subordinated Amendment No. 3") with the guarantors party thereto, the lenders party thereto and U.S. Bank Trust Company, National Association, as agent (the "Subordinated Agent"), which amends that certain Subordinated Credit Agreement, dated as of October 17, 2024, among the Company, the guarantors party thereto, the lenders party thereto and the Subordinated Agent (as amended by that certain Waiver and Amendment No. 1 to Subordinated Credit Agreement, dated as of March 3, 2025, and that certain Amendment No. 2 to Subordinated Credit Agreement, dated as of July 21, 2025, the "Existing Subordinated Credit Agreement" and, as amended by the Subordinated Amendment No. 3, the "Amended Subordinated Credit Agreement"). Under the Subordinated Amendment No. 3, the Subordinated Agent (a) acknowledges that the form of, and the terms and conditions set forth in, the Securities Purchase Agreement (the "Purchase Agreement") and certain ancillary agreements related to the transactions contemplated by that certain Purchase Agreement, by and among Comtech, certain direct or indirect subsidiaries of Comtech named therein and Wavestream Corporation, a Delaware corporation and an affiliate of Gilat Satellite Networks Ltd. (the …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-06-17; the filing has the rest

Timeline

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Questions about who owns Comtech Telecommunications Corp

Who owns Comtech Telecommunications Corp?

On this page, 4 holders' latest ownership filings report 5% or more of Comtech Telecommunications Corp: Magnetar Financial LLC (42.78%, Schedule 13D/A, filed 2026-06-17), White Hat Capital Partners LP (9.99%, Schedule 13D/A, filed 2026-06-16), QVT Financial LP (5.71%, Schedule 13G, filed 2026-05-15) and Vanguard Capital Management (5.01%, Schedule 13G, filed 2026-07-31).

Who are the largest shareholders of Comtech Telecommunications Corp?

By the share each holder's latest filing reports, the largest holders of Comtech Telecommunications Corp on this page are Magnetar Financial LLC (42.78%), White Hat Capital Partners LP (9.99%) and QVT Financial LP (5.71%).

When did Magnetar Financial LLC buy into Comtech Telecommunications Corp?

The filings give report dates, not purchase dates. The earliest filing from Magnetar Financial LLC on this page is the Schedule 13D/A, filed 2025-07-23, reporting 41.62%; its latest, Schedule 13D/A filed 2026-06-17, reports 42.78%. That earliest filing is itself an amendment, which updates an earlier report.

Is this an audit or a full list?

Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 8 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.

Also on the record for Comtech Telecommunications Corp

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Where this comes from

Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.

Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.

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