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Catherine Simonsen Email & Phone Number
Founding Partner
at
Simonsen Sussman LLP
1 work email found
@doj.ca.gov
1 phone found area 917
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Founding Partner
Location
Los Angeles, California, United States
Company size
Who is Catherine Simonsen? Overview
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Quick answer
Catherine Simonsen is listed as Founding Partner at Simonsen Sussman LLP, a company with 1053 employees, based in Los Angeles, California, United States. AeroLeads shows a work email signal at doj.ca.gov, phone signal with area code 917, and a matched LinkedIn profile for Catherine Simonsen.
Catherine Simonsen previously worked as Assistant Regional Director - Western Competition Group at Federal Trade Commission and Deputy Attorney General, Antitrust at California Department Of Justice. Catherine Simonsen holds J.D. from Yale Law School.
Company email context
Email format at Simonsen Sussman LLP
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{first}.{last}@doj.ca.gov
86% confidence
AeroLeads found 1 current-domain work email signal for Catherine Simonsen. Compare company email patterns before reaching out.
Profile bio
About Catherine Simonsen
Catherine Simonsen is a Founding Partner at Simonsen Sussman LLP. She possess expertise in legal writing, legal research, litigation, non profit board development, non profit leadership and 12 more skills.
Listed skills include Legal Writing, Legal Research, Litigation, Non Profit Board Development, and 13 others.
Current workplace
Catherine Simonsen's current company
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Simonsen Sussman Llp
27 roles
Catherine Simonsen work experience
A career timeline built from the work history available for this profile.
Assistant Regional Director - Western Competition Group
CurrentSupervise and manage team of staff attorneys across San Francisco and Seattle offices in Bureau of Competition merger and conduct investigations; helped bring Western Region-San Francisco and Northwest Region competition attorneys together in newly formed Western Competition Group.
Feb 2024 - Present
Deputy Attorney General, Antitrust
The People of the State of California v. Amazon.com, Inc. investigation and litigation.
Feb 2022 - Feb 2024
Partner
Commercial Litigation partner focused on antitrust and consumer class action litigation; served as Americas Commercial Litigation Partner in Charge of Performance Reviews and Feedback.
Jan 2021 - Feb 2022
Apr 2017 - Dec 2020
National Governance Board Member (Volunteer)
Jan 2017 - Jun 2018
Seattle Chapter Board Chair And Representative To National Governance Board (Volunteer)
Sep 2013 - Jan 2017
Seattle Chapter Founder And President (Volunteer)
Jan 2013 - Sep 2015
Jun 2014 - Apr 2017
Sep 2013 - Jun 2014
Law Clerk
Clerked for the Honorable John Coughenour, Senior Judge for the U.S. District Court for the Western District of Washington.
Sep 2012 - Sep 2013
Law Clerk
Clerked for the Honorable Jerome Farris, Senior Judge for the U.S. Court of Appeals for the Ninth Circuit.
Sep 2011 - Jun 2012
Mentor (Volunteer)
Sep 2011 - Feb 2012
Summer Associate
Jun 2011 - Aug 2011
Co-Director Of Programming, National Executive Committee (Volunteer)
Sep 2009 - Sep 2010
Chair Of Nyc Chapter Board; Nyc Representative To National Board (Volunteer)
Sep 2008 - Sep 2009
Nyc Chapter Board Member (Volunteer)
Sep 2007 - Sep 2008
Nyc Chapter Sophomore Program Director (Volunteer)
Sep 2006 - Sep 2008
Nyc Chapter Mentor (Volunteer)
Sep 2005 - Sep 2006
Summer Associate
Prepared memos and letters regarding class certification issues; contributed to client alerts; conducted client intake at Community Legal Services of East Palo Alto.
Jun 2010 - Jul 2010
Intern (Unpaid)
Conducted legal research, wrote memos, and drafted motions and jury instructions for Assistant U.S. Attorneys in Criminal Division.
Jun 2009 - Aug 2009
Group Leader
Led group of high school students on cooking and culture immersion program throughout Mexico.
Jun 2008 - Aug 2008
Associate
Structured and marketed over-the-counter equity derivative strategies for high net worth individuals and institutions; advised holders of concentrated stock positions on managing and hedging single stock exposure. Appointed Co-Women’s Champion for Stanford Recruiting and served on Women’s Network Committee.
Jul 2004 - Apr 2008
Jun 2003 - Aug 2003
Intern (Unpaid)
Anser
Placed in part-time internship at ANSER Homeland Security Institute (HSI) as part of Stanford in Washington program. Conducted analytical assessments in the areas of border protection and pandemic influenza preparedness; edited articles for submission to the HSI Journal of Homeland Security; managed HSI’s weekly newsletter.
Sep 2002 - Dec 2002
Summer Fellow
Placed in Philips' Government Relations Office as part of Eben Tisdale Technology Policy Fellowship. Assisted with digital copyright protection lobbying; wrote whitepaper on digital music market.
Jun 2002 - Aug 2002
Intern
Researched new environmental legislation; co-wrote newsletter reports; wrote grant proposals.
Jun 2001 - Aug 2001
Team & coworkers
Colleagues at Simonsen Sussman LLP
Other employees you can reach at ftc.gov. View company contacts for 1053 employees →
AB
Angeleta Banks
Colleague at Simonsen Sussman Llp
Hyattsville, Maryland, United States, United States
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MS
Mike Sherling
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
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CT
Christopher Taylor
Colleague at Simonsen Sussman Llp
Washington DC-Baltimore Area, United States
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KK
Kara King
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
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SB
Surbhi Bhatter
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
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BZ
Bob Zuver
Colleague at Simonsen Sussman Llp
Arlington, Virginia, United States, United States
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AV
Anna Van De Stouwe
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
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DB
Daniel Blauser
Colleague at Simonsen Sussman Llp
Rockville, Maryland, United States, United States
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J(
Jaime ("Jim") Taronji, Jr.
Colleague at Simonsen Sussman Llp
Herndon, Virginia, United States, United States
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MM
Michael Milgrom
Colleague at Simonsen Sussman Llp
Beachwood, Ohio, United States, United States
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Angeleta Banks
Colleague at Simonsen Sussman Llp
Hyattsville, Maryland, United States, United States
View →
MS
Mike Sherling
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
View →
CT
Christopher Taylor
Colleague at Simonsen Sussman Llp
Washington DC-Baltimore Area, United States
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KK
Kara King
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
View →
SB
Surbhi Bhatter
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
View →
BZ
Bob Zuver
Colleague at Simonsen Sussman Llp
Arlington, Virginia, United States, United States
View →
AV
Anna Van De Stouwe
Colleague at Simonsen Sussman Llp
Washington, District Of Columbia, United States, United States
View →
DB
Daniel Blauser
Colleague at Simonsen Sussman Llp
Rockville, Maryland, United States, United States
View →
J(
Jaime ("Jim") Taronji, Jr.
Colleague at Simonsen Sussman Llp
Herndon, Virginia, United States, United States
View →
MM
Michael Milgrom
Colleague at Simonsen Sussman Llp
Beachwood, Ohio, United States, United States
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2 education records
Catherine Simonsen education
J.D.
B.A., Science, Technology & Society; Economics
FAQ
Frequently asked questions about Catherine Simonsen
Quick answers generated from the profile data available on this page.
What company does Catherine Simonsen work for?
Catherine Simonsen works for Simonsen Sussman LLP.
What is Catherine Simonsen's role at Simonsen Sussman LLP?
Catherine Simonsen is listed as Founding Partner at Simonsen Sussman LLP.
What is Catherine Simonsen's email address?
AeroLeads has found 1 work email signal at @doj.ca.gov for Catherine Simonsen at Simonsen Sussman LLP.
What is Catherine Simonsen's phone number?
AeroLeads has found 1 phone signal(s) with area code 917 for Catherine Simonsen at Simonsen Sussman LLP.
Where is Catherine Simonsen based?
Catherine Simonsen is based in Los Angeles, California, United States while working with Simonsen Sussman LLP.
What companies has Catherine Simonsen worked for?
Catherine Simonsen has worked for Simonsen Sussman Llp, Federal Trade Commission, California Department Of Justice, White & Case Llp, and Minds Matter.
Who are Catherine Simonsen's colleagues at Simonsen Sussman LLP?
Catherine Simonsen's colleagues at Simonsen Sussman LLP include Angeleta Banks, Mike Sherling, Christopher Taylor, Kara King, and Surbhi Bhatter.
How can I contact Catherine Simonsen?
You can use AeroLeads to view verified contact signals for Catherine Simonsen at Simonsen Sussman LLP, including work email, phone, and LinkedIn data when available.
What schools did Catherine Simonsen attend?
Catherine Simonsen holds J.D. from Yale Law School.
What skills is Catherine Simonsen known for?
Catherine Simonsen is listed with skills including Legal Writing, Legal Research, Litigation, Non Profit Board Development, Non Profit Leadership, Youth Mentoring, Equities, and Antitrust Law.
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