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George Tosheff
Director/Board Member at
TENABLE HOLDINGS, INC.
Net worth: 1 M $ as of 30/06/2026
Profile
George Alexander Tosheff is an Independent Director at Tenable Holdings, Inc. since 2022.
Mr. Tosheff is a Venture Partner at SYN Ventures Management LLC.
Formerly, Mr. Tosheff was Senior Vice President & Chief Security Officer at VMware LLC from 2014 to 2023.
Mr. Tosheff was a Partner at St. Paul Venture Capital from 2004 to 2019.
Mr. Tosheff was Senior Director-Information Security at PayPal, Inc. Mr. Tosheff was Senior Director-Information Security at Bill Me Later, Inc. from 2007 to 2008.
Mr. Tosheff was Chief Technology Officer at Adia Nutrition, Inc. Mr. Tosheff was Chief Technology Officer at Science Applications International Corp.
from 1994 to 2001.
Mr. Tosheff completed undergraduate studies at The California State University in 1993.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 13/05/2026 | 31,344 ( 0.03% ) | 1 M $ | 30/06/2026 |
George Tosheff active positions
| Companies | Position | Start |
|---|---|---|
| TENABLE HOLDINGS, INC. | Director/Board Member | 28/09/2022 |
SYN Ventures Management LLC
 SYN Ventures Management LLC Investment ManagersFinance SYN Ventures invests in companies located in the United States and Israel. The firm targets companies operating in the fields of cybersecurity, industrial security, national defense, privacy, regulatory compliance and data governance industries. It provides financing for seed and early stage capital requirements. The firm also acts as a lead investor. | Private Equity Investor | - |
Former positions of George Tosheff
| Companies | Position | End |
|---|---|---|
| VMWARE, INC. | Corporate Officer/Principal | 22/11/2023 |
St. Paul Venture Capital
 St. Paul Venture Capital Investment ManagersFinance Acts as an alternative investment manager | Corporate Officer/Principal | 03/07/2019 |
Bill Me Later, Inc.
 Bill Me Later, Inc. Finance/Rental/LeasingFinance Provides online payment services | Corporate Officer/Principal | 01/10/2008 |
| ADIA MED INC | Chief Tech/Sci/R&D Officer | 01/06/2005 |
| SCIENCE APPLICATIONS INTERNATIONAL CORPORATION | Chief Tech/Sci/R&D Officer | 01/02/2001 |
Training of George Tosheff
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
76
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
PayPal, Inc.
 PayPal, Inc. Finance/Rental/LeasingFinance Operates as a technology platform company which enables digital and mobile payments on behalf of consumers and merchants | Finance |
Adia Nutrition, Inc.
 Adia Nutrition, Inc. Pharmaceuticals: OtherHealth Technology Develops nutritional supplements | Health Technology |
Bill Me Later, Inc.
Bill Me Later, Inc. Finance/Rental/LeasingFinance Provides online payment services | Finance |
Science Applications International Corp.
 Science Applications International Corp. Information Technology ServicesTechnology Services Provides defense and intelligence & civilian system services | Technology Services |
St. Paul Venture Capital
St. Paul Venture Capital Investment ManagersFinance Acts as an alternative investment manager | Finance |
VMware, Inc.
 VMware, Inc. Packaged SoftwareTechnology Services Develops software for cloud computing, security and app modernization services | Technology Services |
The California State University
 The California State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Tenable Holdings, Inc.
 Tenable Holdings, Inc. Packaged SoftwareTechnology Services Develops security software solutions | Technology Services |
SYN Ventures Management LLC
SYN Ventures Management LLC Investment ManagersFinance SYN Ventures invests in companies located in the United States and Israel. The firm targets companies operating in the fields of cybersecurity, industrial security, national defense, privacy, regulatory compliance and data governance industries. It provides financing for seed and early stage capital requirements. The firm also acts as a lead investor. | Finance |
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