Southern California

Your Contact
Helen Wardner
Senior Strategist
To Write Us
PO Box 16816
Irvine, CA 92623

Chat With Us

We’d love to learn more about your nonprofit organization, and share how our leadership and learning services can help support you in achieving your mission. Just give us a call, email us, or fill out our online contact form to start the conversation.

Contact Another Region

We have staff and affiliates located throughout the United States and Canada. Contact the location nearest you for more information on our services.

Contact Form

Professional and Trade Associations

For inquiries regarding professional and trade associations, please contact Helen Wardner, Senior Strategist, at 562-484-8281 or

Interested in joining our team?

If you are interested in becoming part of the Third Sector Company’s community of professional interims and leadership continuity specialists, please contact us at