![Sean Jeffries](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>)
Sean Jeffries
Chief Operating Officer at
DESIGN THERAPEUTICS, INC.
Net worth: 9 M $ as of 30/05/2026
Profile
Sean Jeffries is Chief Operating Officer at Design Therapeutics, Inc. since 2021.
Formerly, Dr. Jeffries was Management Consultant at The Boston Consulting Group, Inc. from 2014 to 2018, Principal at Marlinspike Group, Inc. in 2018, and Principal at Marlinspike Group LLC from 2019 to 2020.
Dr. Jeffries completed a doctorate at the University of Cambridge and an undergraduate degree at The College of Wooster.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 30/03/2026 | 819,753 ( 1.31% ) | 9 M $ | 30/05/2026 |
Sean Jeffries active positions
| Companies | Position | Start |
|---|---|---|
| DESIGN THERAPEUTICS, INC. | Chief Operating Officer | 31/12/2020 |
Former positions of Sean Jeffries
| Companies | Position | End |
|---|---|---|
Marlinspike Group LLC | Corporate Officer/Principal | 31/01/2020 |
Marlinspike Group, Inc. | Corporate Officer/Principal | 30/11/2018 |
The Boston Consulting Group, Inc.
 The Boston Consulting Group, Inc. Miscellaneous Commercial ServicesCommercial Services Provides management consulting services | Corporate Officer/Principal | 31/12/2017 |
Training of Sean Jeffries
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
16
1st degree connections
6
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 6 |
|---|---|
The Boston Consulting Group, Inc.
The Boston Consulting Group, Inc. Miscellaneous Commercial ServicesCommercial Services Provides management consulting services | Commercial Services |
University of Cambridge
 University of Cambridge Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Design Therapeutics, Inc.
 Design Therapeutics, Inc. BiotechnologyHealth Technology Operates biotechnology company that develops therapies for serious degenerative disorders | Health Technology |
Marlinspike Group, Inc. | |
The College of Wooster
 The College of Wooster Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Marlinspike Group LLC |
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