![Sean O'Sullivan](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 O'Sullivan
Director/Board Member at
STATE STREET CORPORATION
Net worth: 5 M $ as of 29/09/2026
Profile
Sean P.
O'Sullivan is currently an Independent Director at State Street Corp.
since 2017, a Director at State Street Bank & Trust Co. (United Kingdom) since 2018, and a Director at Prellis Biologics, Inc. Formerly, Mr. O'Sullivan was Chief Operating Officer & Group Managing Director at HSBC Holdings Plc from 2011 to 2014, Executive Director & Chief Technology Officer at HSBC Bank Plc from 2007 to 2010, Chief Operating Officer at HSBC Bank Canada from 1980 to 2011, and a Trustee at York University Foundation.
Education includes undergraduate studies at Richard Ivey School of Business.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 19/05/2026 | 28,696 ( 0.01% ) | 5 M $ | 29/09/2026 |
Sean O'Sullivan active positions
| Companies | Position | Start |
|---|---|---|
| STATE STREET CORPORATION | Director/Board Member | 16/05/2017 |
State Street Bank & Trust Co. (UK Branch)
 State Street Bank & Trust Co. (UK Branch) Regional BanksFinance Provides commercial banking services | Director/Board Member | 15/05/2018 |
Prellis Biologics, Inc.
 Prellis Biologics, Inc. BiotechnologyHealth Technology Develops novel technology to bio print vascularized human tissues | Director/Board Member | - |
Former positions of Sean O'Sullivan
| Companies | Position | End |
|---|---|---|
| HSBC HOLDINGS PLC | Chief Operating Officer | 30/11/2014 |
| HSBC BANK CANADA | Chief Operating Officer | 18/04/2011 |
HSBC Bank Plc
 HSBC Bank Plc Major BanksFinance Provides commercial and online banking services | Chief Tech/Sci/R&D Officer | 31/12/2009 |
York University Foundation
 York University Foundation The York University Foundation is a company based in Toronto, Canada. | Director/Board Member | - |
Education of Sean O'Sullivan
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
84
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
State Street Corp.
 State Street Corp. Investment Banks/BrokersFinance Operates as bank holding company which provides custody, accounting, fund administration and investment management services | Finance |
HSBC Holdings Plc
 HSBC Holdings Plc Major BanksFinance Operates as a bank holding company with interest in providing national banking services | Finance |
HSBC Bank Canada
 HSBC Bank Canada Regional BanksFinance Provides banking and financial services | Finance |
HSBC Bank Plc
HSBC Bank Plc Major BanksFinance Provides commercial and online banking services | Finance |
York University Foundation
York University Foundation The York University Foundation is a company based in Toronto, Canada. | |
State Street Bank & Trust Co. (UK Branch)
State Street Bank & Trust Co. (UK Branch) Regional BanksFinance Provides commercial banking services | Finance |
Richard Ivey School of Business
 Richard Ivey School of Business Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Prellis Biologics, Inc.
Prellis Biologics, Inc. BiotechnologyHealth Technology Develops novel technology to bio print vascularized human tissues | Health Technology |
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