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Magnetar group (CMTL) shows 42.78% economic stake, costly subordinated debt and new Comtech warrants

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

Magnetar-affiliated funds and David J. Snyderman report a large economic stake in Comtech Telecommunications via convertible preferred stock and related agreements. They beneficially own 22,402,628.13 shares of common stock on an as-converted basis, representing 42.78% of the class, based on 29,961,431 shares outstanding as of June 11, 2026. Actual conversions are limited by a 9.99% Ownership Cap.

The filing describes Amendment No. 3 to Comtech’s subordinated credit agreement covering $65,000,000 of subordinated term loans, adjusts make-whole provisions, and temporarily suspends certain financial covenant tests. In connection with this, Comtech issued lender warrants for up to 625,000 shares at an exercise price of $0.10 per share, vesting October 17, 2026 and expiring April 17, 2032, including warrants for the Magnetar funds to purchase up to 500,000 shares.

Comtech and investors also agreed to exchange 178,180.34 shares of Series B-3 Convertible Preferred Stock into an equal number of Series B-4 Convertible Preferred shares with a $7.99 per share conversion price, extend the timing of optional repurchase and cash dividends to 2028–2029, and put in place updated voting and registration rights arrangements that govern how these preferred holders vote and potentially convert or replace their positions with warrants.

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Insights

Filing details a large preferred-backed stake, expensive subordinated debt, and warrant-heavy incentives without changing immediate ownership caps.

The reporting group, led by Magnetar, shows beneficial ownership of 22,402,628.13 Comtech common shares on an as-converted basis, or 42.78% of the class, via Series B-3/B-4 preferred stock at a $7.99 conversion price. An 9.99% Ownership Cap limits actual conversion at any time, so the economic stake exceeds voting control.

The amended subordinated credit agreement covers $65,000,000 of term loans and sets a make-whole amount of 50% of principal before and on April 1, 2027, increasing to 75% after that date, with a 16.0% per annum make-whole interest rate and a 2.0% default step-up. Covenant testing for key ratios is suspended until the four-quarter period ending July 31, 2027, which eases short-term pressure but embeds high-cost capital.

The company also issued lender warrants for up to 625,000 shares at $0.10 per share, vesting on October 17, 2026, that are forfeited if certain term loans are fully repaid with make-whole amounts before vesting. This structure incentivizes lenders to maintain exposure until at least the vesting date. The exchange into Series B-4 preferred, delayed cash dividend and repurchase rights, and refreshed voting and registration agreements together reshape investor rights over several years; practical effects depend on future asset sales, conversions, and potential repurchases.

Beneficial ownership 22,402,628.13 shares Common stock beneficially owned on an as-converted basis
Ownership percentage 42.78% Percent of Comtech common stock class represented by beneficial ownership
Common shares outstanding 29,961,431 shares Shares of common stock outstanding as of June 11, 2026
Convertible preferred shares 147,232.96 shares Series B-3 Convertible Preferred Stock underlying reported common as-converted
Conversion price $7.99 per share Conversion price for Series B-3 and Series B-4 preferred into common stock
Subordinated term loans $65,000,000 principal Aggregate outstanding principal of subordinated term loans subject to make-whole
Lender warrant pool 625,000 shares Maximum common shares issuable under lender warrants at $0.10 exercise price
Ownership Cap 9.99% Maximum beneficial ownership allowed on conversion of preferred stock
Ownership Cap financial
"would exceed 9.99% of the total number of shares of Common Stock then outstanding (the "Ownership Cap")."
Subordinated Credit Agreement financial
"amends that certain Subordinated Credit Agreement, dated as of October 17, 2024, among the Company..."
make-whole amount financial
"the make-whole amount will be equal to (i) before and on April 1, 2027, the principal repayment amount multiplied by 50.0%, plus..."
A make-whole amount is the cash payment a borrower must give investors when it pays off a bond or loan early, designed to compensate them for lost future interest. Think of it like an early-termination fee that equals the current value of the remaining scheduled payments (often calculated using a set interest rate) so investors are put “made whole”; it matters because it changes how costly early refinancing is and affects bond values and investor returns.
Series B-4 Convertible Preferred Stock financial
"for 178,180.34 shares of the Company's newly issued Series B-4 Convertible Preferred Stock, par value $0.10 per share..."
Registration Rights Agreement financial
"the Company entered into a Registration Rights Agreement, substantially consistent with the existing agreement..."
A registration rights agreement is a contract that gives investors the option to have their ownership stakes officially registered with the government, making it easier to sell their shares later. This agreement matters because it provides investors with a clearer path to cash out their investments if they choose, offering more liquidity and confidence in their ability to sell their holdings when desired.
Lender Warrants financial
"issued... warrants (the "Lender Warrants" and together with the Preferred Warrants..., the "Warrants") to certain lenders..."
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205826209

(CUSIP Number)
David J. Snyderman
1603 Orrington Ave.,,
Evanston, IL, 60201
(847) 905-4400

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
06/14/2026

(Date of Event Which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




schemaVersion:


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Comprised of 22,402,628.13 shares of Common Stock issuable upon conversion of 147,232.96 shares of Series B-3 Convertible Preferred Stock, at an initial conversion price of $7.99 per share, without giving effect to the Ownership Cap (as defined below). The terms of the Series B-3 Convertible Preferred Stock restrict the conversion of such shares to the extent that, upon such conversion, the number of shares of Common Stock then beneficially owned by the holder and its affiliates and any other person or entities with which such holder would constitute a Section 13(d) "group" would exceed 9.99% of the total number of shares of Common Stock then outstanding (the "Ownership Cap"). Accordingly, notwithstanding the number of shares reported, the reporting person disclaims beneficial ownership of the shares of Common Stock issuable upon conversion of Series B-3 Convertible Preferred Stock to the extent that upon such conversion the number of shares beneficially owned by all reporting persons hereunder, in the aggregate, would exceed the Ownership Cap.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Comprised of 22,402,628.13 shares of Common Stock issuable upon conversion of 147,232.96 shares of Series B-3 Convertible Preferred Stock, at an initial conversion price of $7.99 per share, without giving effect to the Ownership Cap (as defined below). The terms of the Series B-3 Convertible Preferred Stock restrict the conversion of such shares to the extent that, upon such conversion, the number of shares of Common Stock then beneficially owned by the holder and its affiliates and any other person or entities with which such holder would constitute a Section 13(d) "group" would exceed 9.99% of the Ownership Cap. Accordingly, notwithstanding the number of shares reported, the reporting person disclaims beneficial ownership of the shares of Common Stock issuable upon conversion of Series B-3 Convertible Preferred Stock to the extent that upon such conversion the number of shares beneficially owned by all reporting persons hereunder, in the aggregate, would exceed the Ownership Cap.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Comprised of 22,402,628.13 shares of Common Stock issuable upon conversion of 147,232.96 shares of Series B-3 Convertible Preferred Stock, at an initial conversion price of $7.99 per share, without giving effect to the Ownership Cap (as defined below). The terms of the Series B-3 Convertible Preferred Stock restrict the conversion of such shares to the extent that, upon such conversion, the number of shares of Common Stock then beneficially owned by the holder and its affiliates and any other person or entities with which such holder would constitute a Section 13(d) "group" would exceed 9.99% of the Ownership Cap. Accordingly, notwithstanding the number of shares reported, the reporting person disclaims beneficial ownership of the shares of Common Stock issuable upon conversion of Series B-3 Convertible Preferred Stock to the extent that upon such conversion the number of shares beneficially owned by all reporting persons hereunder, in the aggregate, would exceed the Ownership Cap.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Comprised of 22,402,628.13 shares of Common Stock issuable upon conversion of 147,232.96 shares of Series B-3 Convertible Preferred Stock, at an initial conversion price of $7.99 per share, without giving effect to the Ownership Cap (as defined below). The terms of the Series B-3 Convertible Preferred Stock restrict the conversion of such shares to the extent that, upon such conversion, the number of shares of Common Stock then beneficially owned by the holder and its affiliates and any other person or entities with which such holder would constitute a Section 13(d) "group" would exceed 9.99% of the Ownership Cap. Accordingly, notwithstanding the number of shares reported, the reporting person disclaims beneficial ownership of the shares of Common Stock issuable upon conversion of Series B-3 Convertible Preferred Stock to the extent that upon such conversion the number of shares beneficially owned by all reporting persons hereunder, in the aggregate, would exceed the Ownership Cap.


SCHEDULE 13D


Magnetar Financial LLC
Signature:/s/ Hayley Stein
Name/Title:Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC, GP of Magnetar Capital Partners LP, its Sole Member
Date:06/17/2026
Magnetar Capital Partners LP
Signature:/s/ Hayley Stein
Name/Title:Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager of Supernova Management LLC, its General Partner
Date:06/17/2026
Supernova Management LLC
Signature:/s/ Hayley Stein
Name/Title:Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager
Date:06/17/2026
David J. Snyderman
Signature:/s/ Hayley Stein
Name/Title:Hayley Stein, Attorney-in-fact for David J. Snyderman, Manager
Date:06/17/2026

FAQ

How many Comtech (CMTL) shares do the Magnetar reporting persons beneficially own?

They report beneficial ownership of 22,402,628.13 Comtech common shares on an as-converted basis. This represents 42.78% of the class, calculated using 29,961,431 shares outstanding as of June 11, 2026, including accumulated preferred dividends through March 31, 2026.

What is the Ownership Cap referenced in the Comtech (CMTL) Schedule 13D/A?

The Ownership Cap limits conversions so the holder’s group cannot exceed 9.99% of Comtech’s outstanding common stock. Even though more shares are economically issuable on conversion, conversions are restricted whenever they would push aggregate beneficial ownership above this threshold.

What terms were changed in Comtech’s subordinated credit agreement with Magnetar lenders?

Amendment No. 3 suspends testing of fixed charge coverage, net leverage, and minimum EBITDA covenants until the four-quarter period ending July 31, 2027. It also revises make-whole calculations on $65,000,000 of subordinated term loans and clarifies treatment of an Advance Payment prepayment obligation.

What are the key terms of the new Comtech (CMTL) lender warrants?

Comtech issued lender warrants for up to 625,000 common shares at an exercise price of $0.10 per share. They vest on October 17, 2026 and expire April 17, 2032, and are forfeited if specified term loans, interest, and make-whole amounts are fully repaid before the vesting date.

How did Comtech change its convertible preferred stock in this amendment?

Investors agreed to exchange all 178,180.34 outstanding Series B-3 Convertible Preferred shares for the same number of Series B-4 shares. The new Series B-4 keeps a $7.99 conversion price but delays optional repurchase to October 31, 2029 and cash dividend elections until October 31, 2028.

What voting restrictions apply to Magnetar under the new Comtech Voting Agreements?

Under the Voting Agreements, Magnetar agrees to vote Series B-4 preferred or converted common shares exceeding 16.50% of Comtech’s outstanding voting power as of January 22, 2024 in the same proportion as non‑investor holders, subject to specified qualifications and exceptions.