![William Donnelly](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>)
William Donnelly
Chairman at
QUANTERIX CORPORATION
Net worth: 7 M $ as of 28/02/2026
Profile
William P.
Donnelly is Executive Chairman at Quanterix Corp.
starting in 2025.
He is Chairman at John Carroll University since 2011.
He serves as Director at Gardner Denver, Inc. He is Independent Director at T.
Rowe Price Group, Inc. since 2023.
He is Lead Independent Director at Ingersoll Rand, Inc. since 2021.
Former roles include Independent Director at Gardner Denver Holdings, Inc., Independent Outside Director at Process Sensing Technologies Ltd., and Independent Outside Director at PHC Holdings Corp.
He was Chief Financial Officer at Elsag Bailey Process Automation NV from 1993 to 1997.
He was Executive Vice President at Mettler-Toledo International, Inc. from 2014 to 2018.
He worked as an Auditor at PricewaterhouseCoopers LLP from 1983 to 1993.
Education includes undergraduate studies at John Carroll University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
INGERSOLL RAND INC. 0.01% | 26/02/2026 | 56,831 ( 0.01% ) | 5 M $ | 28/02/2026 |
| 31/12/2025 | 10,414 ( 0% ) | 985 477 $ | 28/02/2026 | |
| 02/01/2026 | 1,47,949 ( 0.32% ) | 969 066 $ | 28/02/2026 |
William Donnelly active positions
| Companies | Position | Start |
|---|---|---|
| INGERSOLL RAND INC. | Director/Board Member | 01/05/2017 |
| QUANTERIX CORPORATION | Chairman | 24/03/2025 |
| T. ROWE PRICE GROUP, INC. | Director/Board Member | 01/11/2023 |
Gardner Denver, Inc.
 Gardner Denver, Inc. Industrial MachineryProducer Manufacturing Manufactures and supplies compressors, blowers & vacuum pumps | Director/Board Member | - |
John Carroll University
 John Carroll University Other Consumer ServicesConsumer Services Functions as a College/University | Chairman | 01/01/2011 |
Former positions of William Donnelly
| Companies | Position | End |
|---|---|---|
| METTLER-TOLEDO INTERNATIONAL, INC. | Director of Finance/CFO | 06/01/2014 |
Elsag Bailey Process Automation NV
 Elsag Bailey Process Automation NV Electronic Equipment/InstrumentsElectronic Technology Manufactures industrial process systems | Director of Finance/CFO | 01/01/1997 |
PricewaterhouseCoopers LLP
 PricewaterhouseCoopers LLP Miscellaneous Commercial ServicesCommercial Services Provides auditing, assurance, consulting and tax & business consulting services | Corporate Officer/Principal | 01/01/1993 |
Process Sensing Technologies Ltd.
 Process Sensing Technologies Ltd. Industrial MachineryProducer Manufacturing Manufactures measurement instrumentation and monitoring systems for process-critical applications | Director/Board Member | - |
| ░░░ ░░░░░░░░ ░░░░░░░░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
Training of William Donnelly
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
85
1st degree connections
11
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 11 |
|---|---|
Elsag Bailey Process Automation NV
Elsag Bailey Process Automation NV Electronic Equipment/InstrumentsElectronic Technology Manufactures industrial process systems | Electronic Technology |
Mettler-Toledo International, Inc.
 Mettler-Toledo International, Inc. Medical SpecialtiesHealth Technology Manufactures and supplies precision instruments | Health Technology |
Gardner Denver, Inc.
Gardner Denver, Inc. Industrial MachineryProducer Manufacturing Manufactures and supplies compressors, blowers & vacuum pumps | Producer Manufacturing |
T. Rowe Price Group, Inc.
 T. Rowe Price Group, Inc. Investment ManagersFinance Functions as a financial services holding company through its subsidiaries provides investment advisory services | Finance |
PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP Miscellaneous Commercial ServicesCommercial Services Provides auditing, assurance, consulting and tax & business consulting services | Commercial Services |
Quanterix Corp.
 Quanterix Corp. Medical SpecialtiesHealth Technology Develops protein diagnostic platform | Health Technology |
John Carroll University
John Carroll University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Gardner Denver Holdings, Inc.
 Gardner Denver Holdings, Inc. Industrial MachineryProducer Manufacturing Operates as a holding company | Producer Manufacturing |
PHC Holdings Corp.
 PHC Holdings Corp. Medical SpecialtiesHealth Technology Operates a holding company with interests in production and distribution of self-monitoring blood glucose systems | Health Technology |
Process Sensing Technologies Ltd.
Process Sensing Technologies Ltd. Industrial MachineryProducer Manufacturing Manufactures measurement instrumentation and monitoring systems for process-critical applications | Producer Manufacturing |
Ingersoll Rand, Inc.
 Ingersoll Rand, Inc. Industrial MachineryProducer Manufacturing Manufactures industrial equipment, technologies and related parts | Producer Manufacturing |
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