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Gary Pfeiffer
Director/Board Member at
QUEST DIAGNOSTICS INCORPORATED
Net worth: 6 M $ as of 2026-05-30
Profile
Mr. Gary M.
Pfeiffer is an Independent Director at Quest Diagnostics, Inc. He is on the Board of Directors at Quest Diagnostics, Inc. Mr. Pfeiffer was previously employed as an Independent Director by TerraVia Holdings, Inc., a Non-Executive Chairman by Christiana Care Health System, Inc., a Finance Secretary by State of Delaware, a Lead Independent Director by Internap Corp., a Non-Executive Chairman by The Talbots, Inc., a President by INVISTA BV, and a Chief Financial Officer & Senior Vice President by E.I.
du Pont de Nemours & Co. He received his undergraduate degree from The College of William & Mary and an MBA from The College of William & Mary.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-05-19 | 31,005 ( 0.03% ) | 6 M $ | 2026-05-30 |
Gary Pfeiffer active positions
| Companies | Position | Start |
|---|---|---|
| QUEST DIAGNOSTICS INCORPORATED | Director/Board Member | 2004-11-30 |
Former positions of Gary Pfeiffer
| Companies | Position | End |
|---|---|---|
| INTERNAP CORPORATION | Chairman | 2019-12-31 |
| TERRAVIA HOLDINGS INC | Director/Board Member | 2016-12-31 |
Christiana Care Health System, Inc.
 Christiana Care Health System, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a healthcare organization that provides primary, outpatient, home health and urgent care services | Chairman | 2015-12-31 |
| THE TALBOTS, INC. | Chairman | 2012-04-30 |
State of Delaware
 State of Delaware Province/StateGovernment Functions as a regional level government authority | Corporate Officer/Principal | 2009-05-31 |
Training of Gary Pfeiffer
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
73
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
EIDP, Inc.
 EIDP, Inc. Chemicals: AgriculturalProcess Industries Manufactures and sells seed & crop protection products | Process Industries |
The Talbots, Inc.
 The Talbots, Inc. Apparel/Footwear RetailRetail Trade Retails women's apparel, shoes and accessories through online | Retail Trade |
Quest Diagnostics, Inc.
 Quest Diagnostics, Inc. Services to the Health IndustryHealth Services Provides diagnostic testing and information services | Health Services |
Internap Holding LLC
 Internap Holding LLC Packaged SoftwareTechnology Services Provides IT infrastructure services | Technology Services |
TerraVia Holdings, Inc.
 TerraVia Holdings, Inc. Household/Personal CareConsumer Non-Durables Manufactures and sells food, nutrition and specialty ingredients from algae | Consumer Non-Durables |
INVISTA BV
 INVISTA BV TextilesProcess Industries Manufactures and supplies polymers, fibers and chemical products | Process Industries |
The College of William & Mary
 The College of William & Mary Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Christiana Care Health System, Inc.
Christiana Care Health System, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a healthcare organization that provides primary, outpatient, home health and urgent care services | Commercial Services |
State of Delaware
State of Delaware Province/StateGovernment Functions as a regional level government authority | Government |
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