![Jeffrey Sonnenfeld](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>)
Jeffrey Sonnenfeld
Director/Board Member at
LENNAR CORPORATION
Net worth: 2 M $ as of 2026-09-29
Profile
Dr. Jeffrey A. Sonnenfeld is an Independent Director at Lennar Corp., a Senior Associate Dean at Yale School of Management, a President & Chief Executive Officer at Chief Executive Leadership Institute and a Senior Advisor at Atlas Merchant Capital LLC.
He is on the Board of Directors at National Council on Aging, Inc., Lennar Corp., AdvanceCT, Hyperliquid Strategies, Inc. and Investors' Exchange LLC.
Dr. Sonnenfeld was previously employed as an Independent Director by Leo Holdings Corp.
II and a Professor by Harvard Business School.
He also served on the board at Gevity HR, Inc., TheStreet.com, Inc. and Levity HR, Inc. He received his undergraduate degree from Harvard University, an MBA from Harvard Business School and a doctorate degree from Harvard Business School.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-10-06 | 28,209 ( 0.01% ) | 2 M $ | 2026-09-29 | |
| 2026-10-06 | 591 ( 0% ) | 47 274 $ | 2026-09-29 |
Jeffrey Sonnenfeld active positions
| Companies | Position | Start |
|---|---|---|
| LENNAR CORPORATION | Director/Board Member | 2005-08-31 |
Chief Executive Leadership Institute
 Chief Executive Leadership Institute Miscellaneous Commercial ServicesCommercial Services Operates as a leadership organization | Chief Executive Officer | - |
Yale School of Management
 Yale School of Management Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | 2000-12-31 |
National Council on Aging, Inc.
 National Council on Aging, Inc. Miscellaneous Commercial ServicesCommercial Services Operates human rights and health service organisations | Director/Board Member | - |
AdvanceCT
 AdvanceCT Miscellaneous Commercial ServicesCommercial Services Operates as a nonprofit economic development organization | Director/Board Member | - |
Investors' Exchange LLC
 Investors' Exchange LLC Investment Banks/BrokersFinance Provides stock exchange services | Director/Board Member | - |
Atlas Merchant Capital LLC
 Atlas Merchant Capital LLC Investment ManagersFinance Atlas Merchant Capital invests in public and private companies located across the globe, primarily in New York and London. The firm targets companies operating in the fields of financial services. It provides financing for buyout and growth stage capital requirements. | Consultant / Advisor | - |
Former positions of Jeffrey Sonnenfeld
| Companies | Position | End |
|---|---|---|
| THESTREET, INC. | Director/Board Member | 2009-06-22 |
Gevity HR, Inc.
 Gevity HR, Inc. Personnel ServicesCommercial Services Provides outsourced human capital management solutions services | Director/Board Member | 2009-05-31 |
| ░░░░░░░ ░░░░░░░░ ░░░░░░ | ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ | - |
| ░░░ ░░░░░░░░ ░░░░░ ░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
| ░░░░░░ ░░░ ░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
Education of Jeffrey Sonnenfeld
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
93
1st degree connections
13
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 13 |
|---|---|
Lennar Corp.
 Lennar Corp. HomebuildingConsumer Durables Engages in construction and sale of home & multifamily buildings and provides mortgage financing services | Consumer Durables |
TheStreet, Inc.
 TheStreet, Inc. Internet Software/ServicesTechnology Services Provides financial news and investment content services | Technology Services |
Harvard University
 Harvard University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Gevity HR, Inc.
Gevity HR, Inc. Personnel ServicesCommercial Services Provides outsourced human capital management solutions services | Commercial Services |
National Council on Aging, Inc.
National Council on Aging, Inc. Miscellaneous Commercial ServicesCommercial Services Operates human rights and health service organisations | Commercial Services |
Chief Executive Leadership Institute
Chief Executive Leadership Institute Miscellaneous Commercial ServicesCommercial Services Operates as a leadership organization | Commercial Services |
AdvanceCT
AdvanceCT Miscellaneous Commercial ServicesCommercial Services Operates as a nonprofit economic development organization | Commercial Services |
Levity HR, Inc. | |
Harvard Business School
 Harvard Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Yale School of Management
Yale School of Management Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Atlas Merchant Capital LLC
Atlas Merchant Capital LLC Investment ManagersFinance Atlas Merchant Capital invests in public and private companies located across the globe, primarily in New York and London. The firm targets companies operating in the fields of financial services. It provides financing for buyout and growth stage capital requirements. | Finance |
Investors' Exchange LLC
Investors' Exchange LLC Investment Banks/BrokersFinance Provides stock exchange services | Finance |
Leo Holdings Corp. II
 Leo Holdings Corp. II Financial ConglomeratesFinance Operates as a blank check company | Finance |
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