Dave T. Fields
Founder at PTB Holdings LLC
Active connections
| Name | Gender | Age | Linked companies | Collaboration |
|---|---|---|---|---|
| Zia Hayat | M | 42 |
Callsign, Inc.
 Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | 13 years |
| Nicholas G. Hatsopoulos | M | 62 |
The University of Chicago
| 22 years |
| Michael Polsky | M | - |
The University of Chicago
| 21 years |
| Sathvik Srinivasan Krishnamurthy | M | - |
Callsign, Inc.
Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | 8 years |
| Michael Walter Vannier | M | 75 |
The University of Chicago
| 20 years |
| Harry Nelis | M | 60 |
Callsign, Inc.
Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | - |
| Garth Ritchie | M | 56 |
Callsign, Inc.
Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | 3 years |
| Melissa Gilliam | M | 58 |
The University of Chicago
| 19 years |
| Ian Welch | M | - |
Callsign, Inc.
Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | - |
| James Bradley | M | - |
Callsign, Inc.
Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | - |
| Jonathan Ross | M | - |
Callsign, Inc.
Callsign, Inc. Packaged SoftwareTechnology Services Callsign, Inc. develops mobile applications. It offers Callsign, a digital identity mobile application that aims to replace the multiple passwords consumers use for everything. The company was founded in 2011 by Zia Hayat and is headquartered in Palo Alto, CA. | - |
Connections Chart
Multi-company connection
Former connections
| Name | Gender | Age | Linked companies | Collaboration |
|---|---|---|---|---|
| Hoossam Malek | M | - |
The University of Chicago
| 3 years |
| James Crown | M | 70 |
The University of Chicago
| 18 years |
| Samarth Chandra | M | - |
The University of Chicago
| 4 years |
| Daniel Nurmi | M | - |
The University of Chicago
| 1 years |
| Gerald S. Tannenbaum | M | - |
The University of Chicago
| 7 years |
| Taylor Feehley | M | - |
The University of Chicago
| 10 years |
| Bilal Memon | M | - |
The University of Chicago
| 8 years |
| Peishan Tan | M | - |
The University of Chicago
| 5 years |
| Feng Li | M | 48 |
The University of Chicago
| 3 years |
| Kimerling Daniel | M | - |
The University of Chicago
| 4 years |
| Charles Hachten | M | - |
The University of Chicago
| 9 years |
| Amer Hasan | M | - |
The University of Chicago
| 7 years |
| Matthew McAviney | M | - |
The University of Chicago
| 9 years |
| Lukasz Pomorski | M | - |
The University of Chicago
| 3 years |
| Edward S. Su | M | - |
The University of Chicago
| 4 years |
| Ali Sheikh | M | - |
The University of Chicago
| 4 years |
| Joshua Silber | M | - |
The University of Chicago
| 4 years |
| Alberto Horihuela | M | - |
The University of Chicago
| 4 years |
| Andrew Haley | M | - |
The University of Chicago
| 3 years |
| Julio Pellegrini Vial | M | 50 |
The University of Chicago
| 3 years |
| Jennifer L. Boss | F | - |
The University of Chicago
| 2 years |
| Andrew Hamilton | M | - |
The University of Chicago
| 4 years |
| Brett Ivie Ladendorf | M | - |
The University of Chicago
| 2 years |
| Navneet Agarwal | M | - |
The University of Chicago
| 2 years |
| Afshin Luke Rahbari | M | 57 |
The University of Chicago
| 2 years |
| Joon Jeon | M | - |
The University of Chicago
| 4 years |
| Zeong-Won Kim | F | 56 |
The University of Chicago
| 2 years |
| Ryan McManus | M | 51 |
The University of Chicago
| 2 years |
| John Joseph Bonelli | M | - |
The University of Chicago
| 4 years |
| Jie Wang | M | 58 |
The University of Chicago
| 3 years |
| Pedro de Andrade Faria | M | - |
The University of Chicago
| 2 years |
| Ken Brown | M | - |
The University of Chicago
| 2 years |
| Jeffrey Owen | M | - |
The University of Chicago
| 6 years |
| Anthony Thai | M | - |
The University of Chicago
| 4 years |
| Pei Chung Lai | M | 49 |
The University of Chicago
| 2 years |
| Tarun Gupta | M | - |
The University of Chicago
| 5 years |
| Marta Ryvak | F | - |
The University of Chicago
| 4 years |
| Steven Li | M | - |
The University of Chicago
| 3 years |
| Brian Lofton | M | - |
The University of Chicago
| 1 years |
| Andrew Han | M | - |
The University of Chicago
| 4 years |
| Sachin Goel | M | 43 |
The University of Chicago
| 3 years |
| Gauhar Turmuhambetova | M | - |
The University of Chicago
| 7 years |
| Gita Sjahrir | F | 43 |
The University of Chicago
| 4 years |
| Michael Lasota | M | 42 |
The University of Chicago
| 4 years |
| Kung Chik Chiu | M | 40 |
The University of Chicago
| 4 years |
| Xuesong Hu | M | - |
The University of Chicago
| 1 years |
| Ruben J. Rodrigues | M | - |
The University of Chicago
| 3 years |
| Neeraj Bahl | M | - |
The University of Chicago
| 2 years |
| Aasha B. Barot | F | - |
The University of Chicago
| 4 years |
| Chelsea Stoner | F | - |
The University of Chicago
| 2 years |
| Michael A. Honeysett | M | - |
The University of Chicago
| 2 years |
| Amy H. Long | F | - |
The University of Chicago
| 2 years |
| Dan P. Brinkenhoff | M | - |
The University of Chicago
| 3 years |
| Sean M. Carney | M | - |
The University of Chicago
| 3 years |
| Duncan Earl Rolph | M | - |
The University of Chicago
| 2 years |
| Awuori Mutsune | M | - |
The University of Chicago
| 2 years |
| Edward J. Largent | M | - |
The University of Chicago
| 4 years |
| Jeffrey H. Cho | M | - |
The University of Chicago
| 4 years |
| Nikhil Oberoi | M | - |
The University of Chicago
| 4 years |
| Jason L. Duzan | M | - |
The University of Chicago
| 2 years |
| Anna Karolina Olofsson | F | - |
The University of Chicago
| 2 years |
| Matthew Lockridge | M | - |
The University of Chicago
| 2 years |
| Rob S. France | M | - |
The University of Chicago
| 2 years |
| Jonathan Aaron Neitzell | M | - |
The University of Chicago
| 2 years |
| Dan Leonard | M | - |
The University of Chicago
| 3 years |
| David Tarantino | M | - |
The University of Chicago
| 3 years |
| Matt D'Alto | M | - |
The University of Chicago
| 2 years |
| Gianluca Montalti | M | - |
The University of Chicago
| 2 years |
| Patrick Hickey | M | - |
The University of Chicago
| 4 years |
| Ed W. Diffin | M | - |
The University of Chicago
| 3 years |
| Jason Earle Cross | M | - |
The University of Chicago
| 2 years |
| Thomas Tan | M | - |
The University of Chicago
| 2 years |
| Pavel Begun | M | 44 |
The University of Chicago
| 2 years |
| Bennett Lim | M | - |
The University of Chicago
| 2 years |
| Zack Shah | M | - |
The University of Chicago
| 2 years |
| Jeffrey K. Williams | M | - |
The University of Chicago
| 2 years |
| Alina Pak | F | - |
The University of Chicago
| 2 years |
| Rick Yuan | M | - |
The University of Chicago
| 4 years |
| Alexander Petrovich Bychkov | M | 63 |
The University of Chicago
| 2 years |
| Michael Segall | M | - |
The University of Chicago
| 4 years |
| Woo Yong Cha | M | - |
The University of Chicago
| 3 years |
| Eric Braz | M | - |
The University of Chicago
| 2 years |
| Giacomo Balzarini | M | 56 |
The University of Chicago
| 2 years |
| Adam Peach | M | - |
The University of Chicago
| 2 years |
| Scott Robbin | M | - |
The University of Chicago
| 2 years |
| David L. Goldberg | M | - |
The University of Chicago
| 2 years |
| Vidya Khetawat | M | - |
The University of Chicago
| 2 years |
| Christine E. Graham | F | - |
The University of Chicago
| 3 years |
| Leslie Crowe | F | - |
The University of Chicago
| 4 years |
Statistics
| Country | Connections | % of total |
|---|---|---|
| United States | 100 | 100.00% |
Age of Connections
Active
Past
Male
Female
Members of the board
Executives
Origin of connections
- Stock Market
- Insiders
- Dave T. Fields
- Personal Network