![Marianne Weber](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Marianne Weber
Director/Board Member at
MADISON SQUARE GARDEN SPORTS CORP.
Net worth: 608 M $ as of 2026-08-30
Profile
Ms. Marianne D.
Weber is a President at The Heartfelt Foundation, a President at Heartfelt Wings Foundation, Inc. and a Manager at Mlc Ventures LLC.
She is on the Board of Directors at Madison Square Garden Entertainment Corp., Sphere Entertainment Co., Madison Square Garden Sports Corp.
and Green Mountain Foundation, Inc. Ms. Weber was previously employed as a Chairman by Dolan Children’s Foundation, a Vice Chairman by Dolan Family Office LLC, and a Chairman by Dolan Family Foundation.
She also served on the board at AMC Networks, Inc., AMC Networks, Inc., The Madison Square Garden Co. /Old/, Cablevision Systems Corp.
and CSC Holdings LLC.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-05-31 | 760,899 ( 16.8% ) | 293 M $ | 2026-08-30 | |
| 2026-03-08 | 1,153,526 ( 16.8% ) | 157 M $ | 2026-08-30 | |
| 2026-03-08 | 1,153,526 ( 16.8% ) | 90 M $ | 2026-08-30 | |
| 2026-03-08 | 60,981 ( 0.31% ) | 23 M $ | 2026-08-30 | |
AMC GLOBAL MEDIA INC. 16.14% | 2025-09-07 | 1,853,847 ( 16.14% ) | 23 M $ | 2026-08-30 |
| 2026-06-09 | 91,831 ( 0.32% ) | 13 M $ | 2026-08-30 | |
| 2026-03-08 | 99,972 ( 0.25% ) | 8 M $ | 2026-08-30 | |
| 2025-09-07 | 96,465 ( 0.32% ) | 1 M $ | 2026-08-30 |
Marianne Weber active positions
| Companies | Position | Start |
|---|---|---|
| MADISON SQUARE GARDEN SPORTS CORP. | Director/Board Member | 2016-12-08 |
| SPHERE ENTERTAINMENT CO. | Director/Board Member | 2020-04-16 |
| MADISON SQUARE GARDEN ENTERTAINMENT CORP. | Director/Board Member | 2023-04-19 |
The Heartfelt Foundation
 The Heartfelt Foundation Internet Software/ServicesTechnology Services Operates an online platform that enables its users to find information and donate for charity programs | President | 2015-07-31 |
Green Mountain Foundation, Inc.
 Green Mountain Foundation, Inc. Investment Trusts/Mutual FundsMiscellaneous Operates grantmaking foundation | Director/Board Member | 2015-08-31 |
Heartfelt Wings Foundation, Inc. | President | 2014-12-31 |
Mlc Ventures LLC
 Mlc Ventures LLC Miscellaneous Commercial ServicesCommercial Services Mlc Ventures LLC, doing business as Wrapsol, specializes in manufacturing and distributing protective films for electronic devices. The private company is based in Massachusetts, with operations in Boca Raton, Florida. The American company's product line includes matte film wraps that are fingerprint-resistant and reduce glare, carbon fiber films with a high-gloss finish, clear polyurethane films with a dry-apply adhesive for sensitive screens, and durable high-gloss black urethane films resistant to scratches, stains, and extreme temperatures. | Corporate Officer/Principal | - |
Former positions of Marianne Weber
| Companies | Position | End |
|---|---|---|
| AMC GLOBAL MEDIA INC. | Director/Board Member | 2024-07-07 |
| AMC GLOBAL MEDIA INC. | Director/Board Member | 2021-06-15 |
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Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
61
1st degree connections
14
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 14 |
|---|---|
Dolan Family Foundation | |
CSC Holdings LLC
 CSC Holdings LLC Specialty TelecommunicationsCommunications Provides internet, tv, phone and mobile services | Communications |
Cablevision Systems Corp.
 Cablevision Systems Corp. Cable/Satellite TVConsumer Services Provides cable TV, broadband and VoIP services | Consumer Services |
MSG Networks, Inc.
 MSG Networks, Inc. Internet Software/ServicesTechnology Services Operates as an integration of sports, entertainment and media business | Technology Services |
AMC Networks, Inc.
 AMC Networks, Inc. Cable/Satellite TVConsumer Services Owns and operates cable television networks through its subsidiaries | Consumer Services |
Dolan Family Office LLC | |
Dolan Children’s Foundation
 Dolan Children’s Foundation Specialty TelecommunicationsCommunications Dolan Family Office LLC operates in the Repair Services industry and employs between 1 to 4 people, generating revenue between $1 million and $5 million. The non-profit company is based in Woodbury, NY. | Communications |
The Heartfelt Foundation
The Heartfelt Foundation Internet Software/ServicesTechnology Services Operates an online platform that enables its users to find information and donate for charity programs | Technology Services |
Madison Square Garden Sports Corp.
 Madison Square Garden Sports Corp. Movies/EntertainmentConsumer Services Engages in live sports and entertainment business | Consumer Services |
Green Mountain Foundation, Inc.
Green Mountain Foundation, Inc. Investment Trusts/Mutual FundsMiscellaneous Operates grantmaking foundation | Miscellaneous |
Sphere Entertainment Co.
 Sphere Entertainment Co. Media ConglomeratesConsumer Services Provides music and live entertainment services | Consumer Services |
Heartfelt Wings Foundation, Inc. | |
Mlc Ventures LLC
Mlc Ventures LLC Miscellaneous Commercial ServicesCommercial Services Mlc Ventures LLC, doing business as Wrapsol, specializes in manufacturing and distributing protective films for electronic devices. The private company is based in Massachusetts, with operations in Boca Raton, Florida. The American company's product line includes matte film wraps that are fingerprint-resistant and reduce glare, carbon fiber films with a high-gloss finish, clear polyurethane films with a dry-apply adhesive for sensitive screens, and durable high-gloss black urethane films resistant to scratches, stains, and extreme temperatures. | Commercial Services |
Madison Square Garden Entertainment Corp.
 Madison Square Garden Entertainment Corp. Movies/EntertainmentConsumer Services Provides entertainment and sport events production & presenting services | Consumer Services |
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