John Jansen: Email & Phone Number

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Independent Board Director at Oklo Inc|Alexandria, Virginia, United States

Position:

Independent Board Director at Oklo Inc

Location:

Alexandria, Virginia, United States

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Last updated: 2026-03-30

Updated: 2026-03-30

Found email addresses for John Jansen:

Business emails:

j**@oklo.com

Personal emails:

j***@yahoo.com,

j***@aol.com

Found phones for John Jansen:

+1-909-***-**38,

+1-623-***-**19,

+1-480-***-**81

A different John Jansen?

Work Experience 22 years

Independent Board Director at Oklo Inc

Apr 2024 - Current

Chairman, Compensation Committee at Oklo Inc

Apr 2024 - Current

Member, Audit Committee at Oklo Inc

Apr 2024 - Current

Senior Advisor at Kinetica

Oct 2025 - Current

Senior Advisor at Particle Labs Inc.

Oct 2025 - Current

Senior Advisor at Ukrainian Freedom Fund

May 2024 - Current

Chief Executive Officer at ATI | Advanced Technology International

Jul 2024 - Jun 2025

Business Student at Harvard Business School

Jan 2024 - Apr 2024

Managing Director - Europe, Middle East, Africa, Asia-Pacific at Luminator Technology Group

Aug 2022 - Jan 2024

Deputy Commandant for Programs and Resources, U.S. Marine Corps, (Lieutenant General) at United States Marine Corps

Oct 2018 - Nov 2021

Chairman Of The Board Of Directors (Lieutenant General) at Marine Corps Community Services

Oct 2018 - Nov 2021

Commandant, Eisenhower School of National Security and Resource Strategy (Major General) at National Defense University

Jul 2017 - Oct 2018

Commanding General, 3d Marine Expeditionary Brigade (Brigadier General) at United States Marine Corps

Nov 2015 - Jul 2017

Assistant Deputy Commandant, Programs and Resources, U.S. Marine Corps (Brigadier General) at United States Marine Corps

Jul 2013 - Nov 2015

Commanding Officer, Marine Aircraft Group 11 (Colonel) at United States Marine Corps

Jun 2011 - Jun 2013

Operations Officer, 1st Marine Aircraft Wing (Colonel) at United States Marine Corps

Feb 2009 - Jun 2011

Student, NATO Defense College (Colonel) at NATO Defense College

Aug 2008 - Feb 2009

Team Chief, Arms Control Inspection Team, Conventional Forces in Europe Treaty (Lieutenant Colonel) at Defense Threat Reduction Agency

Jun 2006 - Jul 2008

Commanding Officer, Marine Fighter Attack Squadron 251 (Lieutenant Colonel) at US Marine Corps

Jul 2004 - Jul 2006

John Jansen started working in 2004, then the employee has changed 12 companies and 16 jobs. On average, John Jansen works for one company for 1 year 9 months.

Education

Bachelor of Science - BS at Indiana University - Kelley School of Business

General Management Program at Harvard Business School

Senior Course at NATO Defense College

US Navy Fighter Weapons School (TOPGUN)

Frequently Asked Questions

What is John Jansen's email address?

SignalHire found verified email addresses for John Jansen, both business and personal. Their business email is j**@oklo.com, and personal emails include j***@yahoo.com, and j***@aol.com.

What is John Jansen's phone number?

SignalHire found multiple verified phone numbers for John Jansen: +1-909-***-**38, +1-623-***-**19, and +1-480-***-**81.

How do I contact John Jansen at Oklo Inc?

You can reach John Jansen through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is John Jansen's professional background?

John Jansen has 22 years of professional experience. They have held roles including Chairman, Compensation Committee, Member, Audit Committee, and Senior Advisor at companies such as Oklo Inc, Oklo Inc, and Kinetica. Their education includes Bachelor of Science - BS from Indiana University - Kelley School of Business, and General Management Program from Harvard Business School.

Is John Jansen's contact information up to date?

Yes. John Jansen's SignalHire profile was last updated on 30 March 2026, reflecting their current position as Independent Board Director at Oklo Inc in Santa Clara, CA, United States.

John Jansen Namesakes

Name

Company

Position

John Jansen

Cuningham

Architectural Designer I

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John Jansen

St. Ann Center for Intergenerational Care

Vice President of Grants, Community & Capital Development

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John Jansen

Jansen Electrical Ltd

Owner

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