![Shawn O'Connor](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>)
Shawn O'Connor
Chief Executive Officer at
SIMULATIONS PLUS, INC.
Net worth: - $ as of 2026-05-30
Profile
Shawn M.
O'Connor is the Chief Executive Officer at Simulations Plus, Inc. since 2018.
Formerly, Mr. O'Connor was Chairman, President & Chief Executive Officer at Pharsight Corp.
from 2002 to 2009, President, Chief Executive Officer & Director at Entelos, Inc. from 2011 to 2018, Chief Financial Officer at Diasonics Ultrasound, Inc. from 1988 to 1994, and President, Chief Operating & Financial Officer at QRS Corp.
from 1995 to 2000.
Education includes undergraduate studies at the University of California, Berkeley.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-12-14 | 0 ( -.--% ) | - $ | 2026-05-30 |
Shawn O'Connor active positions
| Companies | Position | Start |
|---|---|---|
| SIMULATIONS PLUS, INC. | Chief Executive Officer | 2018-06-25 |
Former positions of Shawn O'Connor
| Companies | Position | End |
|---|---|---|
Entelos, Inc.
 Entelos, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a clinical trial partner that supports drug research and development teams | Chief Executive Officer | 2017-12-31 |
Pharsight Corp.
 Pharsight Corp. Packaged SoftwareTechnology Services Develops computer-assisted trial design software | Chief Executive Officer | 2008-12-31 |
QRS Corp.
 QRS Corp. Internet Software/ServicesTechnology Services Provides electronic commerce merchandise and logistics solutions | President | 1999-12-31 |
Diasonics Ultrasound, Inc.
 Diasonics Ultrasound, Inc. Electronic Equipment/InstrumentsElectronic Technology Manfactures ultrasound medical instruments | Director of Finance/CFO | 1993-12-31 |
Training of Shawn O'Connor
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
29
1st degree connections
6
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 6 |
|---|---|
Diasonics Ultrasound, Inc.
Diasonics Ultrasound, Inc. Electronic Equipment/InstrumentsElectronic Technology Manfactures ultrasound medical instruments | Electronic Technology |
QRS Corp.
QRS Corp. Internet Software/ServicesTechnology Services Provides electronic commerce merchandise and logistics solutions | Technology Services |
Simulations Plus, Inc.
 Simulations Plus, Inc. Packaged SoftwareTechnology Services Develops and produces software for use in pharmaceutical research | Technology Services |
Pharsight Corp.
Pharsight Corp. Packaged SoftwareTechnology Services Develops computer-assisted trial design software | Technology Services |
Entelos, Inc.
Entelos, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a clinical trial partner that supports drug research and development teams | Commercial Services |
University of California, Berkeley
 University of California, Berkeley Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
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