Sonja Wilkerson

Director/Board Member at KOPPERS HOLDINGS INC.

Net worth: 1 M $ as of 2024-03-30

63 year

100 connections

Technology Services

Process Industries

Electronic Technology

Active connections

Name	Gender	Age	Linked companies	Collaboration
Leroy Ball	M	55	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	14 years
James Sullivan	M	59	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	11 years
Stephanie Apostolou	F	43	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	13 years
Stephen Tritch	M	74	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	15 years
Jimmi Smith	F	51	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	4 years
John Schultz	M	59	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
K. Sridhar	M	63	BLOOM ENERGY CORPORATION	23 years
Antonio Neri	M	56	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
David Heard	M	55	INFINERA CORPORATION	7 years
Al Neupaver	M	73	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	15 years
Xudong Feng	M	65	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	15 years
Louis Testoni	M	74	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	11 years
David Motley	M	65	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	7 years
Traci Jensen	F	57	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	6 years
Andrew Sandifer	M	54	KOPPERS HOLDINGS INC.	1 years
Bradley Pearce	M	57	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	18 years
Kevin Washington	M	55	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	2 years
Michael Timmeny	M	-	CISCO SYSTEMS, INC.	20 years
Tracie McCormick	F	-	KOPPERS HOLDINGS INC.	13 years
Otto Chan	M	-	CISCO SYSTEMS, INC.	12 years
Michael Capellas	M	70	CISCO SYSTEMS, INC.	18 years
Quynh T. McGuire	F	-	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	9 years
Pamela Carter	F	74	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Tushar Lovalekar	M	-	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	8 years
Mary Bush	F	75	BLOOM ENERGY CORPORATION	8 years
Heiko Meyer	M	-	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Gary Reiner	M	69	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Leslie Hyde	F	63	KOPPERS HOLDINGS INC. Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	25 years
Nishan Vartanian	M	64	KOPPERS HOLDINGS INC.	-
Michael Boskin	M	77	BLOOM ENERGY CORPORATION	5 years
Eddy Zervigon	M	55	BLOOM ENERGY CORPORATION	17 years
Raymond Lane	M	77	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Ann Livermore	F	65	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
John Chambers	M	74	BLOOM ENERGY CORPORATION	6 years
Shawn Soderberg	F	63	BLOOM ENERGY CORPORATION	8 years
Jeff Immelt	M	68	BLOOM ENERGY CORPORATION	5 years
Kristina Johnson	M	67	CISCO SYSTEMS, INC.	12 years
Kirt Karros	M	54	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Raymond Ozzie	M	68	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Mark Robert McCormack	M	-	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	10 years
Ravi Prasher	M	50	BLOOM ENERGY CORPORATION	2 years
Guillermo Brooks	M	58	BLOOM ENERGY CORPORATION	3 years
Stephanie Javorski	F	-	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	23 years
Jeffrey Senchak	M	-	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	9 years
Katherine Ducker	F	-	HEWLETT PACKARD ENTERPRISE COMPANY	8 years
Joseph Dowd	M	-	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	12 years
Jessica Franklin	F	-	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	8 years
Douglas J. Fenwick	M	-	KOPPERS HOLDINGS INC.	5 years
Daniel R. Groves	M	57	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	13 years
Christian Arndal Nielsen	M	61	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	14 years
Alexander Derecho	M	-	INFINERA CORPORATION	6 years
Robin Zhu	M	-	Koppers, Inc. Koppers, Inc. Chemicals: SpecialtyProcess Industries Koppers, Inc. produces carbon compounds, chemicals, and treated wood products. The firm offers naphthalene, petroleum pitch, phthalic anhydride, refined tar, specialty pitch, coal tar distillates, carbon pitch, pressure-treated wood, tie pre plating, track panels, and rail joints and track components. It also provides carbon pitch testing, engineering support, logistics, and railroad structures services. The company was founded in December 1988 and is headquartered in Pittsburgh, PA.	17 years
Derek Idemoto	M	-	CISCO SYSTEMS, INC.	17 years
Cynthia Warner	F	65	BLOOM ENERGY CORPORATION	1 years
Edward D. Vallejo	M	64	BLOOM ENERGY CORPORATION	3 years
Aman Joshi	M	47	BLOOM ENERGY CORPORATION	-

Connections Chart

Multi-company connection

Former connections

Name	Gender	Age	Linked companies	Collaboration
Meg Whitman	F	66	HEWLETT PACKARD ENTERPRISE COMPANY	4 years
William Kurtz	M	67	BLOOM ENERGY CORPORATION	13 years
Barry O'Sullivan	M	-	CISCO SYSTEMS, INC.	12 years
Michelangelo Volpi	M	57	CISCO SYSTEMS, INC.	13 years
Steven Robert Lacy	M	68	KOPPERS HOLDINGS INC.	19 years
Gérald Karsenti	M	-	HEWLETT PACKARD ENTERPRISE COMPANY	2 years
Dennis Powell	M	76	CISCO SYSTEMS, INC.	11 years
Natalya Bailey	M	-	BLOOM ENERGY CORPORATION	-
Pierre-Paul Allard	M	65	CISCO SYSTEMS, INC.	5 years
Gregory Cameron	M	55	BLOOM ENERGY CORPORATION	4 years
Daniel Ammann	M	51	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Swaminathan Venkataraman	M	63	BLOOM ENERGY CORPORATION	19 years
Neal L. Oristano	M	68	CISCO SYSTEMS, INC.	-
Mick Lopez	M	64	CISCO SYSTEMS, INC.	4 years
Peter Teti	M	56	BLOOM ENERGY CORPORATION	5 years
Leslie Brun	M	72	HEWLETT PACKARD ENTERPRISE COMPANY	3 years
Tiang Yew Tan	M	54	CISCO SYSTEMS, INC.	11 years
Kelly Ayotte	F	56	BLOOM ENERGY CORPORATION	2 years
Rhonda Parouty	F	49	HEWLETT PACKARD ENTERPRISE COMPANY	9 years
Asim Hussain	M	-	BLOOM ENERGY CORPORATION	5 years
Glen Griffiths	M	61	BLOOM ENERGY CORPORATION	-
Gerod Carfantan	M	-	CISCO SYSTEMS, INC.	4 years
Cathy Francis	F	-	CISCO SYSTEMS, INC.	-
Saar Gillai	M	57	HEWLETT PACKARD ENTERPRISE COMPANY CISCO SYSTEMS, INC.	12 years
Henry Gomez	M	61	HEWLETT PACKARD ENTERPRISE COMPANY	-
Arun Sarin	M	68	CISCO SYSTEMS, INC.	11 years
Marc Andreessen	M	52	HEWLETT PACKARD ENTERPRISE COMPANY	3 years
John Doerr	M	72	BLOOM ENERGY CORPORATION	19 years
Klaus-Christian Kleinfeld	M	65	HEWLETT PACKARD ENTERPRISE COMPANY	2 years
Brad Boston	M	70	CISCO SYSTEMS, INC.	11 years
Dick M. Kovacevich	M	80	CISCO SYSTEMS, INC.	-
Randy Furr	M	70	BLOOM ENERGY CORPORATION	5 years
Brian L. Halla	M	77	CISCO SYSTEMS, INC.	-
Scott Sandell	M	59	BLOOM ENERGY CORPORATION	19 years
Betsy Rafael	F	62	CISCO SYSTEMS, INC.	5 years
David Faugno	M	54	CISCO SYSTEMS, INC.	2 years
Michael J. Zugay	M	72	KOPPERS HOLDINGS INC.	7 years
Michael Angelakis	M	59	HEWLETT PACKARD ENTERPRISE COMPANY	5 years
Marc Benioff	M	59	CISCO SYSTEMS, INC.	2 years
Roy Sehgal	M	-	CISCO SYSTEMS, INC.	5 years
Paul S. Zimmerman	M	-	CISCO SYSTEMS, INC.	-
David M. Hillenbrand	M	76	KOPPERS HOLDINGS INC.	14 years
Maggie Wilderotter	F	69	HEWLETT PACKARD ENTERPRISE COMPANY	6 years
Hitesh Sheth	M	56	CISCO SYSTEMS, INC.	7 years

Statistics

Country	Connections	% of total
United States	100	100.00%

Age of Connections

Active

Past

Male

Female

Members of the board

Executives

Origin of connections