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Michael Stubblefield
Chief Executive Officer at
PerkinElmer U.S. LLC
Net worth: 17 M $ as of 31/05/2026
Profile
Presently, Michael Stubblefield occupies the position of President, Chief Executive Officer & Director at Avantor, Inc. and Chief Executive Officer of Avantor Performance Materials, Inc. (a subsidiary of Avantor, Inc.). Mr. Stubblefield previously occupied the position of VP & General Manager-Advanced Engineered Materials at Celanese Corp. Michael Stubblefield received an undergraduate degree from the University of Utah and an MBA from Texas A&M University-Corpus Christi.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
AVANTOR, INC. 0.28% | 02/03/2026 | 1,917,522 ( 0.28% ) | 17 M $ | 31/05/2026 |
Latest news about Michael Stubblefield
Michael Stubblefield active positions
| Companies | Position | Start |
|---|---|---|
Avantor Performance Materials LLC
 Avantor Performance Materials LLC Chemicals: Major DiversifiedProcess Industries Manufactures and markets chemicals for the biopharmaceutical industry | President | - |
New Mountain Capital LLC
 New Mountain Capital LLC Investment ManagersFinance New Mountain Capital invests in middle market companies located in the United States with an enterprise value of USD 100 - 1000 million. The firm focuses on a broad range of sectors and industries. It provides financing for add-on acquisitions, buyout and growth transactions with a transaction size ranging USD 100 - 500 million. It also acquires majority control and minority equity positions. | Private Equity Investor | - |
Committee for Economic Development
 Committee for Economic Development Miscellaneous Commercial ServicesCommercial Services Provides management consulting services | Director/Board Member | 01/01/2023 |
PerkinElmer U.S. LLC
 PerkinElmer U.S. LLC BiotechnologyHealth Technology Develops diverse analytical equipment and applications on chemicals, reagents, standards, media and disposable labware | Chief Executive Officer | 23/03/2026 |
Former positions of Michael Stubblefield
| Companies | Position | End |
|---|---|---|
| AVANTOR, INC. | Chief Executive Officer | 18/08/2025 |
| INGERSOLL RAND INC. | Director/Board Member | 01/01/2023 |
| CELANESE CORPORATION | Corporate Officer/Principal | 01/01/2012 |
Training of Michael Stubblefield
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
67
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
Celanese Corp.
 Celanese Corp. Chemicals: SpecialtyProcess Industries Produces acetyl products and engineered polymers | Process Industries |
New Mountain Capital LLC
New Mountain Capital LLC Investment ManagersFinance New Mountain Capital invests in middle market companies located in the United States with an enterprise value of USD 100 - 1000 million. The firm focuses on a broad range of sectors and industries. It provides financing for add-on acquisitions, buyout and growth transactions with a transaction size ranging USD 100 - 500 million. It also acquires majority control and minority equity positions. | Finance |
University of Utah
 University of Utah Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Committee for Economic Development
Committee for Economic Development Miscellaneous Commercial ServicesCommercial Services Provides management consulting services | Commercial Services |
Avantor Performance Materials LLC
Avantor Performance Materials LLC Chemicals: Major DiversifiedProcess Industries Manufactures and markets chemicals for the biopharmaceutical industry | Process Industries |
PerkinElmer U.S. LLC
PerkinElmer U.S. LLC BiotechnologyHealth Technology Develops diverse analytical equipment and applications on chemicals, reagents, standards, media and disposable labware | Health Technology |
Texas A&M University-Corpus Christi
 Texas A&M University-Corpus Christi Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Avantor, Inc.
 Avantor, Inc. Medical SpecialtiesHealth Technology Manufactures and supplies laboratory equipment and bioscience products | Health Technology |
Ingersoll Rand, Inc.
 Ingersoll Rand, Inc. Industrial MachineryProducer Manufacturing Manufactures industrial equipment, technologies and related parts | Producer Manufacturing |
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