![John Tien](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
John Tien
Director/Board Member at
UNION PACIFIC CORPORATION
Net worth: 463 586 $ as of 31/05/2026
Profile
John K.
Tien is currently an Independent Director at Union Pacific Corp.
and Union Pacific Railroad Co. since 2023, an Independent Director at Science Applications International Corp.
since 2024, a Director at Avalon Action Alliance, and a Professor at Georgia Institute of Technology.
Formerly, Mr. Tien was Senior Director-Afghanistan & Pakistan at the National Security Council from 2009 to 2011, Head-Business & Process Re-Engineering at Citigroup, Inc. from 2020 to 2021, and Deputy Secretary at the U.S.
Department of Homeland Security from 2021 to 2023.
Education includes graduate studies at the University of Oxford and undergraduate studies at the US Military Academy.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 03/06/2026 | 4,449 ( 0.01% ) | 463 586 $ | 31/05/2026 | |
| 01/04/2026 | 0 ( -.--% ) | - $ | 31/05/2026 |
John Tien active positions
| Companies | Position | Start |
|---|---|---|
| UNION PACIFIC CORPORATION | Director/Board Member | 14/12/2023 |
| SCIENCE APPLICATIONS INTERNATIONAL CORPORATION | Director/Board Member | 02/12/2024 |
Union Pacific Railroad Co.
 Union Pacific Railroad Co. RailroadsTransportation Provides railroad freight transportation services | Director/Board Member | 14/12/2023 |
Georgia Institute of Technology
 Georgia Institute of Technology Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | - |
Former positions of John Tien
| Companies | Position | End |
|---|---|---|
U.S. Department of Homeland Security
 U.S. Department of Homeland Security SovereignGovernment Governmental department | Corporate Officer/Principal | 01/07/2023 |
| CITIGROUP INC. | Chief Administrative Officer | 01/01/2013 |
National Security Council /US/ | Corporate Officer/Principal | 01/01/2011 |
Training of John Tien
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
62
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
Union Pacific Corp.
 Union Pacific Corp. RailroadsTransportation Provides railroad freight transportation services | Transportation |
Union Pacific Railroad Co.
Union Pacific Railroad Co. RailroadsTransportation Provides railroad freight transportation services | Transportation |
Citigroup, Inc.
 Citigroup, Inc. Major BanksFinance Provides retail, investment, commercial banking, brand cards, securities sale & exchanges services | Finance |
Science Applications International Corp.
 Science Applications International Corp. Information Technology ServicesTechnology Services Provides defense and intelligence & civilian system services | Technology Services |
University of Oxford
 University of Oxford Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Georgia Institute of Technology
Georgia Institute of Technology Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
US Military Academy
 US Military Academy Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
U.S. Department of Homeland Security
U.S. Department of Homeland Security SovereignGovernment Governmental department | Government |
National Security Council /US/ |
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