Thomas L. Siebert
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Thomas L. Siebert Email & Phone Number

President at Sentinel Corporation, LLC. at Sentinel Corporation, LLC.
Location: Washington, District of Columbia, United States 7 work roles 2 schools
1 work email found @wexlerwalker.com LinkedIn matched
✓ Verified Jul 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email

Work email s****@wexlerwalker.com
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Sentinel Corporation, LLC.
Role
President at Sentinel Corporation, LLC.
Location
Washington, District of Columbia, United States

Who is Thomas L. Siebert? Overview

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Quick answer

Thomas L. Siebert is listed as President at Sentinel Corporation, LLC. at Sentinel Corporation, LLC., based in Washington, District of Columbia, United States. AeroLeads shows a work email signal at wexlerwalker.com and a matched LinkedIn profile for Thomas L. Siebert.

Thomas L. Siebert previously worked as President at Sentinel Corporation, Llc. and Senior Counselor at Wexler Walker. Thomas L. Siebert holds Ba, Government from Georgetown University.

Company email context

Email format at Sentinel Corporation, LLC.

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{last}@wexlerwalker.com
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AeroLeads found 1 current-domain work email signal for Thomas L. Siebert. Compare company email patterns before reaching out.

Profile bio

About Thomas L. Siebert

A Washington attorney and international business advisor with over 30 years of private sector experience and a diplomat during the Clinton Presidency as US Ambassador to Sweden. He specializes in international business and governmental affairs related to telecom, IT, renewable energy and clean technology. He provides counsel to clients on legislative and regulatory matters, government affairs, and Federal marketing. His wide-ranging background includes owning, operating and managing various businesses, as well as corporate experience in legal, operational and financial areas.In 1998, he served as Chairman of the International Telecommunication Union (ITU) Plenipotentiary Conference. The ITU, 189 Nations at the time, is the United Nations' specialized agency devoted to telecommunications matters and is the highest decision-making body made up of representatives of governments belonging to an int'l treaty-making organization. Amb. Siebert served as parliamentarian and negotiator on such contentious issues as Palestinian membership in the ITU.He currently serves on the Advisory Board to the American Bar Association’s Int'l Criminal Courts Project, a subset of the ABA’s Center for Human Rights. He currently serves on the Diplomatic Council on Energy Security for Securing America's Future Energy (SAFE), a nonpartisan, committed to reducing America's dependence on foreign oil and improving US energy security. He also serves as Chairman of the Stockholm International Peace Research Institute – North America (SIPRI-NA) headquartered in Washington, DC. whose charter is to contribute to policy debates on global and regional security issues through dissemination of SIPRI research, analysis, and recommendations drawn from SIPRI’s global networks. He also serves on the Board of American Citizens Abroad Global Foundation. Amb. Siebert received a B.A. from Georgetown University and a J.D. from Georgetown University Law SchoolContact: tsiebert@sentinel-corporation.com

Listed skills include Public Policy, Policy Analysis, Politics, Legislative Relations, and 33 others.

Current workplace

Thomas L. Siebert's current company

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Sentinel Corporation, LLC.
Sentinel Corporation, Llc.
President at Sentinel Corporation, LLC.
7 roles · 53 years

Thomas L. Siebert work experience

A career timeline built from the work history available for this profile.

President

Current
Sentinel Corporation, Llc.
2011 - Present ~15 yrs 6 mos

Senior Counselor

Wexler Walker
2009 - 2011 ~2 yrs

Ambassador

Stockholm, Sweden

1994 - 1998 ~4 yrs

Of Counsel

Bessozi, Gavin & Cravin
1986 - 1994 ~8 yrs

Partner

Lovett, Hennessey, Stambler & Siebert
1974 - 1986 ~12 yrs
2 education records

Thomas L. Siebert education

FAQ

Frequently asked questions about Thomas L. Siebert

Quick answers generated from the profile data available on this page.

What company does Thomas L. Siebert work for?

Thomas L. Siebert works for Sentinel Corporation, LLC..

What is Thomas L. Siebert's role at Sentinel Corporation, LLC.?

Thomas L. Siebert is listed as President at Sentinel Corporation, LLC. at Sentinel Corporation, LLC..

What is Thomas L. Siebert's email address?

AeroLeads has found 1 work email signal at @wexlerwalker.com for Thomas L. Siebert at Sentinel Corporation, LLC..

Where is Thomas L. Siebert based?

Thomas L. Siebert is based in Washington, District of Columbia, United States while working with Sentinel Corporation, LLC..

What companies has Thomas L. Siebert worked for?

Thomas L. Siebert has worked for Sentinel Corporation, Llc., Wexler Walker, Greenberg Traurig, Patton Boggs Llp, and Us Embassy.

How can I contact Thomas L. Siebert?

You can use AeroLeads to view verified contact signals for Thomas L. Siebert at Sentinel Corporation, LLC., including work email, phone, and LinkedIn data when available.

What schools did Thomas L. Siebert attend?

Thomas L. Siebert holds Ba, Government from Georgetown University.

What skills is Thomas L. Siebert known for?

Thomas L. Siebert is listed with skills including Public Policy, Policy Analysis, Politics, Legislative Relations, Political Campaigns, Legal Research, Foreign Policy, and Coalitions.

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