PFEIFFER GARY M

Director at QUEST DIAGNOSTICS INC · on record since Jan 4, 2006
Director at TALBOTS INC · on record since Jun 5, 2006
Director at INTERNAP NETWORK SERVICES CORP · on record since Aug 22, 2007
Senior Vice President & CFO at DUPONT E I DE NEMOURS & CO · on record since Feb 9, 2004
Director at SOLAZYME INC · on record since Oct 10, 2014
Director at TVIA INC · on record since Jun 10, 2016

Insider trading activity of PFEIFFER GARY M

Transactions on record: 196; since Sep 16, 2003

Open-market buys: 1; $65.6K

Open-market sells: 13; $7M

Companies traded: 6; last filing May 21, 2026

Figures computed from official regulatory filings — methodology.

Companies where PFEIFFER GARY M has traded

QUEST DIAGNOSTICS INC74 tx · $12.2M · May 21, 2026
INTERNAP NETWORK SERVICES CORP42 tx · $270.2K · May 8, 2020
TVIA INC2 tx · May 23, 2017
SOLAZYME INC4 tx · May 14, 2015
TALBOTS INC17 tx · $89K · Aug 7, 2012
DUPONT E I DE NEMOURS & CO57 tx · $649.8K · Jan 18, 2007

Track record of PFEIFFER GARY M

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of PFEIFFER GARY M

Co-insiders of PFEIFFER GARY M

This page republishes public regulatory disclosures. Concerned by this data? Exercise your right to object →

Company	Filed	Type	Qty	Price	Value · USD	Src
QUEST DIAGNOSTICS INC	May 21, 2026	Award	1,142	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	Oct 24, 2025	OtherD	-4,413.28	190.58 USD	$841.1K	SEC
QUEST DIAGNOSTICS INC	Oct 24, 2025	Sell	-1,482	182.40 USD	$270.3K	SEC
QUEST DIAGNOSTICS INC	May 19, 2025	Award	1,203	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 20, 2024	Award	1,482	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 19, 2023	Award	1,369	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 20, 2022	Award	1,292	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 25, 2021	Award	1,363	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 21, 2020	Award	1,531	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	May 8, 2020	OtherD	-4,072	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	May 8, 2020	Other	-80,695	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 10, 2019	Award	26,726	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 16, 2019	Award	1,722	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Nov 14, 2018	Buy	10,000	6.56 USD	$65.6K	SEC
INTERNAP NETWORK SERVICES CORP	Oct 2, 2018	Award	1,819	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jul 3, 2018	Award	1,316	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 11, 2018	Award	9,557	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 17, 2018	Award	1,644	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Apr 9, 2018	Other	66	11.07 USD	$730.6	SEC
INTERNAP NETWORK SERVICES CORP	Apr 3, 2018	Award	802	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jan 3, 2018	Award	-557	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Oct 3, 2017	Award	-2,011	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Aug 24, 2017	Award	32,258	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 23, 2017	Award	4,277	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 23, 2017	Award	32,258	0.00 USD	$0	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
QUEST DIAGNOSTICS INC	May 21, 2026	Award	1,142	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	Oct 24, 2025	OtherD	-4,413.28	190.58 USD	$841.1K	SEC
QUEST DIAGNOSTICS INC	Oct 24, 2025	Sell	-1,482	182.40 USD	$270.3K	SEC
QUEST DIAGNOSTICS INC	May 19, 2025	Award	1,203	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 20, 2024	Award	1,482	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 19, 2023	Award	1,369	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 20, 2022	Award	1,292	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 25, 2021	Award	1,363	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 21, 2020	Award	1,531	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	May 8, 2020	OtherD	-4,072	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	May 8, 2020	Other	-80,695	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 10, 2019	Award	26,726	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 16, 2019	Award	1,722	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Nov 14, 2018	Buy	10,000	6.56 USD	$65.6K	SEC
INTERNAP NETWORK SERVICES CORP	Oct 2, 2018	Award	1,819	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jul 3, 2018	Award	1,316	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 11, 2018	Award	9,557	0.00 USD	$0	SEC
QUEST DIAGNOSTICS INC	May 17, 2018	Award	1,644	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Apr 9, 2018	Other	66	11.07 USD	$730.6	SEC
INTERNAP NETWORK SERVICES CORP	Apr 3, 2018	Award	802	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jan 3, 2018	Award	-557	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Oct 3, 2017	Award	-2,011	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Aug 24, 2017	Award	32,258	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 23, 2017	Award	4,277	0.00 USD	$0	SEC
INTERNAP NETWORK SERVICES CORP	Jun 23, 2017	Award	32,258	0.00 USD	$0	SEC