| Position | Unternehmen | Zeitraum |
|---|---|---|
| Chairman of the Board | Pulmatrix Inc | 21. April 2020 - |
| Independent Director | Genocea Biosciences Inc | 26. Februar 2015 - |
| Independent Chairman of the Board | Voyager Therapeutics Inc | 1. Juni 2019 - 4. Juni 2020 |
| Independent Director | Voyager Therapeutics Inc | 1. Juli 2015 - 1. Juni 2019 |
| Chief Operating Officer | Ironwood Pharmaceuticals, Inc. | 27. August 2014 - 1. Dezember 2014 |
| Chief Financial Officer, Chief Operating Officer, Senior Vice President | Ironwood Pharmaceuticals, Inc. | 1. Januar 2003 - 27. August 2014 |