![Michael Seibel](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>)
Michael Seibel
Director/Board Member at
REDDIT, INC.
Net worth: 8 M $ as of 2026-05-30
Profile
Michael Seibel is currently a Partner at Y Combinator LLC since 2014.
Mr. Seibel is also an Independent Director at Reddit, Inc. and Dropbox, Inc., both positions starting in 2020.
Formerly, Mr. Seibel was Chief Executive Officer at Twitch Interactive, Inc. from 2007 to 2011 and Chief Executive Officer at Socialcam, Inc. in 2012.
Mr. Seibel served as Director at Atrium Legal Technology Services, Inc. and as Advisor at Outlierz Ventures.
Mr. Seibel completed undergraduate studies at Yale University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
REDDIT, INC. 0.03% | 2024-05-23 | 31,697 ( 0.03% ) | 6 M $ | 2026-05-30 |
| 2026-05-20 | 65,333 ( 0.04% ) | 2 M $ | 2026-05-30 | |
| 2026-06-07 | 5,333 ( 0% ) | 938 608 $ | 2026-05-30 |
Michael Seibel active positions
| Companies | Position | Start |
|---|---|---|
| REDDIT, INC. | Director/Board Member | 2020-06-09 |
| DROPBOX, INC. | Director/Board Member | 2020-12-09 |
Y Combinator LLC
 Y Combinator LLC Investment ManagersFinance Y Combinator seeks investment opportunities in companies located in the United States. The firm focuses on a broad range of sectors and industries. It provides financing for seed and early stage capital requirements. | Private Equity Investor | 2014-09-30 |
Former positions of Michael Seibel
| Companies | Position | End |
|---|---|---|
Socialcam, Inc.
 Socialcam, Inc. Packaged SoftwareTechnology Services Develops a social video capture, editing and sharing application | Chief Executive Officer | 2012-07-31 |
Twitch Interactive, Inc.
 Twitch Interactive, Inc. Movies/EntertainmentConsumer Services Provides live video network services | Chief Executive Officer | 2011-09-30 |
Outlierz Ventures
 Outlierz Ventures Investment ManagersFinance Outlierz Ventures invests in companies located in primarily in Africa, Morocco, Egypt, Nigeria, and Kenya. The firm focuses on B2B, B2B2C and tech-enabled companies. It provide financing for Seed stage capital requirements and acts as the lead investor. | Consultant / Advisor | - |
Atrium Legal Technology Services, Inc.
 Atrium Legal Technology Services, Inc. Packaged SoftwareTechnology Services Develops software for law firm | Director/Board Member | - |
Training of Michael Seibel
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
23
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Twitch Interactive, Inc.
Twitch Interactive, Inc. Movies/EntertainmentConsumer Services Provides live video network services | Consumer Services |
Yale University
 Yale University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Reddit, Inc.
 Reddit, Inc. Internet Software/ServicesTechnology Services Operates and develops online platform that offers social news aggregation, content rating & discussion | Technology Services |
Y Combinator LLC
Y Combinator LLC Investment ManagersFinance Y Combinator seeks investment opportunities in companies located in the United States. The firm focuses on a broad range of sectors and industries. It provides financing for seed and early stage capital requirements. | Finance |
Dropbox, Inc.
 Dropbox, Inc. Packaged SoftwareTechnology Services Develops cloud storage and file sharing tool for businesses | Technology Services |
Socialcam, Inc.
Socialcam, Inc. Packaged SoftwareTechnology Services Develops a social video capture, editing and sharing application | Technology Services |
Atrium Legal Technology Services, Inc.
Atrium Legal Technology Services, Inc. Packaged SoftwareTechnology Services Develops software for law firm | Technology Services |
Outlierz Ventures
Outlierz Ventures Investment ManagersFinance Outlierz Ventures invests in companies located in primarily in Africa, Morocco, Egypt, Nigeria, and Kenya. The firm focuses on B2B, B2B2C and tech-enabled companies. It provide financing for Seed stage capital requirements and acts as the lead investor. | Finance |
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