![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: 516 M $ as of 27/02/2026
Profile
Marianne Dolan Weber is currently Director at Madison Square Garden Sports Corp.
since 2016, Director at Green Mountain Foundation, Inc. since 2015, Director at Sphere Entertainment Co. since 2020, Director at Madison Square Garden Entertainment Corp.
since 2023, President at The Heartfelt Foundation since 2015, President at Heartfelt Wings Foundation, Inc. since 2015, and Manager at Mlc Ventures LLC.
Former roles include Chairman at Dolan Family Foundation from 1999 to 2011, Vice Chairman at Dolan Family Office LLC from 1997 to 2011, Chairman at Dolan Children’s Foundation from 1999 to 2011, Director at CSC Holdings LLC, Director at Cablevision Systems Corp.
from 2005 to 2016, Director at MSG Networks, Inc. from 2010 to 2014, and Director at AMC Networks, Inc. from 2011 to 2021 and again from 2022 to 2024.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 08/03/2026 | 760,899 ( 16.8% ) | 252 M $ | 27/02/2026 | |
| 07/09/2025 | 1,153,526 ( 16.8% ) | 137 M $ | 27/02/2026 | |
| 26/02/2026 | 1,153,526 ( 16.8% ) | 73 M $ | 27/02/2026 | |
| 08/03/2026 | 60,981 ( 0.31% ) | 20 M $ | 27/02/2026 | |
| 07/09/2025 | 1,853,847 ( 16.14% ) | 15 M $ | 27/02/2026 | |
| 03/06/2025 | 91,832 ( 0.32% ) | 11 M $ | 27/02/2026 | |
| 26/02/2026 | 99,972 ( 0.25% ) | 6 M $ | 27/02/2026 | |
| 07/09/2025 | 96,465 ( 0.31% ) | 788 119 $ | 27/02/2026 |
Marianne Weber active positions
| Companies | Position | Start |
|---|---|---|
| MADISON SQUARE GARDEN SPORTS CORP. | Director/Board Member | 08/12/2016 |
| SPHERE ENTERTAINMENT CO. | Director/Board Member | 16/04/2020 |
| MADISON SQUARE GARDEN ENTERTAINMENT CORP. | Director/Board Member | 19/04/2023 |
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 | 31/07/2015 |
Green Mountain Foundation, Inc.
 Green Mountain Foundation, Inc. Investment Trusts/Mutual FundsMiscellaneous Operates grantmaking foundation | Director/Board Member | 31/08/2015 |
Heartfelt Wings Foundation, Inc. | President | 31/12/2014 |
Mlc Ventures LLC
 Mlc Ventures LLC Miscellaneous Commercial ServicesCommercial Services MLC Ventures LLC is a pledge fund that specializes in supporting disruptive seed and early-stage startups across various industries. The company makes direct investments or co-investments in equity ranging from 100K to 2 million and provide support to founders through their expertise in finance, technology, and entrepreneurship. Additionally, they offer M&A advisory, fundraising, and VC consulting services. The company is based in San Francisco. | Corporate Officer/Principal | - |
Former positions of Marianne Weber
| Companies | Position | End |
|---|---|---|
| AMC NETWORKS INC. | Director/Board Member | 07/07/2024 |
| AMC NETWORKS INC. | Director/Board Member | 15/06/2021 |
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Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
60
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 | 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 is a pledge fund that specializes in supporting disruptive seed and early-stage startups across various industries. The company makes direct investments or co-investments in equity ranging from 100K to 2 million and provide support to founders through their expertise in finance, technology, and entrepreneurship. Additionally, they offer M&A advisory, fundraising, and VC consulting services. The company is based in San Francisco. | 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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