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Mathew Dennis

Disclosed activity across 1 company

Tapewire entity
42562
SEC CIK
0001946788

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Optimum Communications, Inc.OPTU · Entity 5768Director · Chairman and CEOMay 29, 2026June 02, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Optimum Communications, Inc.

Report date May 29, 2026 · Filed June 02, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A common stockSEC Table I · non-derivativeDirect2,759,448 Reported balance After 2026-05-29 transaction · row 1
1 source row

Row 1 · 2026-05-29 · Disposition to issuer · Disposed 550,800 · Balance 2,759,448

F1: On May 29, 2026, Mr. Mathew agreed to contribute 550,800 shares of Class A common stock of the Issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the Issuer, in exchange for 1,377 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the Issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934.

Filing footnotes · ownership attribution and instrument terms

F1: On May 29, 2026, Mr. Mathew agreed to contribute 550,800 shares of Class A common stock of the Issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the Issuer, in exchange for 1,377 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the Issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
May 29, 2026 Filed Jun 2, 2026 22:21 UTC Optimum Communications, Inc. OPTU · Entity 5768 Disposition to issuerClass A common stock 550,800 Not disclosed Not disclosed
Disclosure

SEC source: 0000947871-26-000602 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,759,448

F1 · date: On May 29, 2026, Mr. Mathew agreed to contribute 550,800 shares of Class A common stock of the Issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the Issuer, in exchange for 1,377 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the Issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934.

F1 · deemedExecutionDate: On May 29, 2026, Mr. Mathew agreed to contribute 550,800 shares of Class A common stock of the Issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the Issuer, in exchange for 1,377 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the Issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934.

F1 · shares: On May 29, 2026, Mr. Mathew agreed to contribute 550,800 shares of Class A common stock of the Issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the Issuer, in exchange for 1,377 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the Issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934.

F1 · price: On May 29, 2026, Mr. Mathew agreed to contribute 550,800 shares of Class A common stock of the Issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the Issuer, in exchange for 1,377 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the Issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934.

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February 27, 2026 Filed Mar 3, 2026 23:56 UTC Optimum Communications, Inc. OPTU · Entity 5768 Tax withholdingClass A common stock 484,042 $1.42 $687,339.64
Disclosure

SEC source: 0000947871-26-000217 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,310,248

F1 · kind: Represents shares of the Issuer's Class A common stock withheld for taxes upon the vesting of restricted share units granted pursuant to the Optimum Communications, Inc. (f/k/a Altice USA, Inc.) 2017 Long Term Incentive Plan, as amended.

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October 24, 2025 Filed Oct 28, 2025 22:23 UTC Optimum Communications, Inc. ATUS · Entity 5768 Tax withholdingClass A Common Stock 220,043 $2.17 $477,493.31
Disclosure

SEC source: 0000947871-25-000931 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,794,290

F1 · kind: Represents shares of the Issuer's Class A common stock withheld for taxes upon the vesting of restricted share units granted pursuant to the Amended and Restated Altice USA 2017 Long Term Incentive Plan, as amended.

Read SEC document
March 18, 2025 Filed Mar 20, 2025 22:45 UTC Optimum Communications, Inc. ATUS · Entity 5768 GrantClass A common stock 1,893,939 Not disclosed Not disclosed
Disclosure

SEC source: 0000947871-25-000327 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,014,333

F1 · price: Represents restricted share units granted pursuant to the Amended and Restated Altice USA 2017 Long Term Incentive Plan, as amended. Each restricted share unit represents a contingent right to receive one share of the Issuer's Class A common stock. The restricted share units vest in equal installments on each of March 1, 2026, 2027 and 2028.

Read SEC document
March 01, 2025 Filed Mar 4, 2025 22:34 UTC Optimum Communications, Inc. ATUS · Entity 5768 Tax withholdingClass A common stock 114,227 $2.87 $327,831.49
Disclosure

SEC source: 0000947871-25-000269 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,120,394

F1 · kind: Represents shares of the Issuer's Class A common stock withheld for taxes upon the vesting of restricted share units granted pursuant to the Amended and Restated Altice USA 2017 Long Term Incentive Plan, as amended.

Read SEC document
October 25, 2024 Filed Oct 29, 2024 20:34 UTC Optimum Communications, Inc. ATUS · Entity 5768 Tax withholdingClass A common stock 440,087 $2.44 $1,073,812.28
Disclosure

SEC source: 0000947871-24-000829 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,234,621

F1 · kind: Represents shares of the Issuer's Class A common stock withheld for taxes upon the vesting of restricted share units granted pursuant to the Amended and Restated Altice USA 2017 Long Term Incentive Plan, as amended.

Read SEC document
March 18, 2024 Filed Mar 20, 2024 21:51 UTC Optimum Communications, Inc. ATUS · Entity 5768 GrantClass A common stock 950,570 Not disclosed Not disclosed
Disclosure

SEC source: 0000947871-24-000296 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Director · Chairman and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,674,708

F1 · price: Represents restricted share units granted pursuant to the Amended and Restated Altice USA 2017 Long Term Incentive Plan, as amended. Each restricted share unit represents a contingent right to receive one share of the Issuer's Class A common stock. The restricted share units vest in equal installments on each of March 1, 2025, 2026 and 2027.

Read SEC document
October 26, 2022 Filed Oct 28, 2022 21:07 UTC Optimum Communications, Inc. ATUS · Entity 5768 GrantStock option (right to buy) · Derivative 3,144,654 $0.00 Strike: $5.80 $0.00
Disclosure

SEC source: 0000947871-22-001111 · ownership.xml · derivative · entry 2

Mathew Dennis · CIK 0001946788 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,144,654

Underlying: Class A Common Stock · 3,144,654 shares

Expires 2032-10-26

F2 · derivative.exercise_date: Represents stock options granted pursuant to the Plan. The stock options vest 50% on October 26, 2024 and 25% on each of October 26, 2025 and October 26, 2026, respectively.

Read SEC document
October 26, 2022 Filed Oct 28, 2022 21:07 UTC Optimum Communications, Inc. ATUS · Entity 5768 GrantClass A Common Stock 1,724,138 Not disclosed Not disclosed
Disclosure

SEC source: 0000947871-22-001111 · ownership.xml · nonDerivative · entry 1

Mathew Dennis · CIK 0001946788 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,724,138

F1 · price: Represents restricted share units granted pursuant to the Issuer's Amended and Restated Altice USA 2017 Long Term Incentive Plan (the "Plan"). Each restricted share unit represents a contingent right to receive one share of the Issuer's Class A common stock. The restricted share units vest 50% on October 26, 2024 and 25% on each of October 26, 2025 and October 26, 2026, respectively.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.