John Callahan – Biography
Last update: March 19, 2026Executive profile
John Callahan is currently
Chief Technology Officer at Veridium - View - Veridium org chart
Create your alert
to follow the career of John Callahan.
More about John Callahan
Do you need to know more about John Callahan? More results.
Participate
Social media
- John Callahan on Google News, X (Twitter), LinkedIn, YouTube
- View the pictures of John Callahan
The colleagues of John Callahan
Company Colleagues
- At Veridium, John Callahan has 11 colleagues including Todd Shollenbarger (CEO), Adnan Chaban (Chairman of the Board)…
Homonyms
- John Callahan - Chief Financial Officer - CAPA
- John Callahan - Chief Investment Officer - Edged
- John Callahan - Partner, Head of International Health Mergers and Acquisitions, Managing Partner of Chicago Office - McDermott Will & Schulte
Industry Colleagues
- In the Software industry, John Callahan has 58,753 colleagues in 4,703 companies located in 75 countries. 31,659 executive movements have been recorded in the last 12 months. Learn more about Software.
Report an error
Update the org chart details of John Callahan.
Get in Touch
Here are a few tips for establishing great contacts.
Through the switchboard, call Veridium at +1 212... and ask for John Callahan.
