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John Steitz
No open positions remaining
Net worth: 792 410 $ as of 31/05/2026
Profile
John M.
Steitz served as President & Chief Executive Officer at Avantor Performance Materials LLC from 2012 to 2013.
He was President & Chief Executive Officer at Addivant USA LLC from 2015 to 2019.
He held the position of President, Chief Executive Officer & Director at Tredegar Corp.
from 2019 to 2025.
He was Director at Innophos, Inc. from 2009 to 2020 and Independent Director at Innophos Holdings, Inc. during the same period.
He was President & Chief Operating Officer at Albemarle Corp.
in 2012.
He was President at PQ LLC (Pennsylvania) from 2015 to 2019 and President & Chief Operating Officer at PQ Holdings, Inc. from 2013 to 2015.
Other roles include Director at The Baton Rouge Area Foundation, Co-Managing Director at SI Group Germany (DEAB) GmbH, and VP & General Manager-Pharmaceutical Chemicals at Mallinckrodt, Inc.(Old).
Education includes undergraduate studies at the University of Missouri and an MBA from Southern Illinois University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
TREDEGAR CORPORATION 0.29% | 01/03/2026 | 1,01,461 ( 0.29% ) | 792 410 $ | 31/05/2026 |
Former positions of John Steitz
| Companies | Position | End |
|---|---|---|
| TREDEGAR CORPORATION | Chief Executive Officer | 31/12/2025 |
| INNOPHOS HOLDINGS, INC. | Director/Board Member | 07/02/2020 |
Innophos, Inc.
 Innophos, Inc. Wholesale DistributorsDistribution Services Manufactures Specialty Salts, Specialty Acid and Phosphoric Acid | Director/Board Member | 01/02/2020 |
PQ Corp.
 PQ Corp. Chemicals: SpecialtyProcess Industries Produces silicates, silicas and derivative products | President | 01/01/2019 |
Addivant USA LLC
 Addivant USA LLC Chemicals: SpecialtyProcess Industries Manufactures and supplies antioxidants, intermediates and inhibitors, polymer modifiers and ultraviolet stabilizer solutions | Chief Executive Officer | 01/01/2019 |
Training of John Steitz
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
51
1st degree connections
13
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 13 |
|---|---|
Albemarle Corp.
 Albemarle Corp. Chemicals: SpecialtyProcess Industries Manufactures basic lithium compounds for energy storage, plastic materials and organometallic co-catalysts | Process Industries |
Mallinckrodt, Inc.(Old)
 Mallinckrodt, Inc.(Old) Medical SpecialtiesHealth Technology Develops, manufactures and markets medical products | Health Technology |
Tredegar Corp.
 Tredegar Corp. AluminumNon-Energy Minerals Produces aluminum extrusions, polyethylene and flexible packaging films | Non-Energy Minerals |
PQ Holdings, Inc.
 PQ Holdings, Inc. Chemicals: SpecialtyProcess Industries Manufactures specialty inorganic performance chemicals, specialty catalysts and specialty glass materials | Process Industries |
PQ Corp.
PQ Corp. Chemicals: SpecialtyProcess Industries Produces silicates, silicas and derivative products | Process Industries |
University of Missouri
 University of Missouri Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Innophos, Inc.
Innophos, Inc. Wholesale DistributorsDistribution Services Manufactures Specialty Salts, Specialty Acid and Phosphoric Acid | Distribution Services |
Southern Illinois University
 Southern Illinois University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Innophos Holdings, Inc.
 Innophos Holdings, Inc. Food: Specialty/CandyConsumer Non-Durables Manufactures essential ingredients, chelated minerals and phosphates & retails through online | Consumer Non-Durables |
Avantor Performance Materials LLC
 Avantor Performance Materials LLC Chemicals: Major DiversifiedProcess Industries Manufactures and markets chemicals for the biopharmaceutical industry | Process Industries |
The Baton Rouge Area Foundation
 The Baton Rouge Area Foundation Investment Trusts/Mutual FundsMiscellaneous Provides investment advice for foundations | Miscellaneous |
Addivant USA LLC
Addivant USA LLC Chemicals: SpecialtyProcess Industries Manufactures and supplies antioxidants, intermediates and inhibitors, polymer modifiers and ultraviolet stabilizer solutions | Process Industries |
SI Group Germany (DEAB) GmbH
 SI Group Germany (DEAB) GmbH Chemicals: Major DiversifiedProcess Industries Manufactures and supplies antioxidants, polymers and chemical products | Process Industries |
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