![William Porteous](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>)
William Porteous
Chairman at
BLACKSKY TECHNOLOGY INC.
Net worth: 7 M $ as of 2026-05-30
Profile
William D.
Porteous is the founder of Dockery Farms Foundation, established in 2004, serving as Co-Chairman.
Current jobs include Chairman of BlackSky Holdings, Inc. (Virginia), Chairman of Blacksky Technology, Inc. since 2021, Chairman of BlackSky Global LLC since 2018, Director at Liquid Machines, Inc., VigLink, Inc., Paperless, Inc., Spire Global Subsidiary, Inc., Breather Products, Inc., Udisense, Inc., Ursa Space Systems, Inc., BlackSky Holdings, Inc., Pilot Fiber, Inc., WaveXR, Inc., Pattern Brands LLC (New York), and RRE Advisors LLC where the title is General Partner & COO.
Also serves as Independent Director at Spire Global, Inc. since 2014.
Former jobs include Director at Tacit Networks, Inc., Electric Cloud, Inc., Frictionless Commerce, Inc., Skyhook Wireless, Inc., Drobo, Inc., Pontiflex, Inc., Hotpotato Media, Inc., HowAboutWe LLC, Certeon, Inc., ColdWatt, Inc., TestQuest, Inc., WhipTail Technologies, Inc., and Director at BuzzFeed, Inc. from 2010 to 2021.
Principal roles at SupplyWorks, Inc. and NetMarket Co. Adjunct Assistant Professor at The Trustees of Columbia University in The City of New York from 2003 to 2018.
Education includes an MBA from Harvard University, undergraduate degree from Stanford University, and graduate degree from London School of Economics & Political Science.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-03-30 | 77,785 ( 0.21% ) | 4 M $ | 2026-05-30 | |
| 2026-05-27 | 127,503 ( 0.33% ) | 3 M $ | 2026-05-30 |
William Porteous active positions
| Companies | Position | Start |
|---|---|---|
| SPIRE GLOBAL, INC. | Director/Board Member | 2014-04-30 |
| BLACKSKY TECHNOLOGY INC. | Chairman | - |
BlackSky Holdings, Inc. (Virginia)
 BlackSky Holdings, Inc. (Virginia) Aerospace & DefenseElectronic Technology Provides integrated space products and services | Chairman | - |
Spire Global Subsidiary, Inc.
 Spire Global Subsidiary, Inc. Miscellaneous Commercial ServicesCommercial Services Provides affordable space exploration services | Director/Board Member | - |
Blacksky Holdings, Inc.
 Blacksky Holdings, Inc. Specialty TelecommunicationsCommunications Operates as a satellite imagery and data company | Director/Board Member | - |
Breather Products, Inc.
 Breather Products, Inc. Internet Software/ServicesTechnology Services Operates as an online platform that provides booking of office spaces for the events and meetings | Director/Board Member | - |
Paperless, Inc.
 Paperless, Inc. Air Freight/CouriersTransportation Provides online messaging services | Director/Board Member | - |
Pilot Fiber, Inc.
 Pilot Fiber, Inc. Major TelecommunicationsCommunications Provides internet services | Director/Board Member | - |
WaveXR, Inc.
 WaveXR, Inc. Internet Software/ServicesTechnology Services Provides virtual entertainment platform services | Director/Board Member | - |
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Former positions of William Porteous
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Training of William Porteous
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
92
1st degree connections
36
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 36 |
|---|---|
Liquid Machines, Inc.
 Liquid Machines, Inc. Packaged SoftwareTechnology Services Provides enterprise rights management solutions | Technology Services |
Tacit Networks, Inc.
 Tacit Networks, Inc. Packaged SoftwareTechnology Services Provides Wide Area File Services (WAFS) solutions services | Technology Services |
SupplyWorks, Inc.
 SupplyWorks, Inc. Packaged SoftwareTechnology Services Provides materials supply management solutions | Technology Services |
Electric Cloud, Inc.
 Electric Cloud, Inc. Packaged SoftwareTechnology Services Develops automated software delivery platform to build and deploy | Technology Services |
Frictionless Commerce, Inc.
 Frictionless Commerce, Inc. Packaged SoftwareTechnology Services Provides relationship management software solutions | Technology Services |
Skyhook Wireless, Inc.
 Skyhook Wireless, Inc. Specialty TelecommunicationsCommunications Develops metro-area positioning system | Communications |
Drobo, Inc.
 Drobo, Inc. Computer PeripheralsElectronic Technology Develops storage products | Electronic Technology |
Pontiflex, Inc.
 Pontiflex, Inc. Advertising/Marketing ServicesCommercial Services Operates a mobile advertising platform | Commercial Services |
VigLink, Inc.
 VigLink, Inc. Information Technology ServicesTechnology Services Develops revenue generating programs for web publishers | Technology Services |
Hotpotato Media, Inc.
 Hotpotato Media, Inc. Miscellaneous Commercial ServicesCommercial Services Operates social networking sites | Commercial Services |
Paperless, Inc.
Paperless, Inc. Air Freight/CouriersTransportation Provides online messaging services | Transportation |
HowAboutWe LLC
 HowAboutWe LLC Commercial Printing/FormsCommercial Services Operates as an offline dating site | Commercial Services |
BlackSky Holdings, Inc. (Virginia)
BlackSky Holdings, Inc. (Virginia) Aerospace & DefenseElectronic Technology Provides integrated space products and services | Electronic Technology |
The Trustees of Columbia University in The City of New York
 The Trustees of Columbia University in The City of New York Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Harvard University
 Harvard University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Stanford University
 Stanford University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
RRE Advisors LLC
 RRE Advisors LLC Investment ManagersFinance RRE Advisors invests in technology-based companies primarily located in the US and canada. The firm targets companies operating across a broad range of sectors and industries. It provides financing for seed, early, and expansion stage capital requirements. | Finance |
NetMarket Co.
 NetMarket Co. Other Consumer ServicesConsumer Services Facilitates commercial deals on Inter | Consumer Services |
Certeon, Inc.
 Certeon, Inc. Packaged SoftwareTechnology Services Develops and provides software solutions | Technology Services |
ColdWatt, Inc.
 ColdWatt, Inc. Electrical ProductsProducer Manufacturing Develops and manufactures digital power supplies and converters | Producer Manufacturing |
TestQuest, Inc.
 TestQuest, Inc. Miscellaneous Commercial ServicesCommercial Services Provides laboratory testing services for new technological innovations | Commercial Services |
London School of Economics & Political Science
 London School of Economics & Political Science Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
BuzzFeed, Inc. (New York)
 BuzzFeed, Inc. (New York) Internet Software/ServicesTechnology Services Operates as a digital media company | Technology Services |
WhipTail Technologies, Inc.
 WhipTail Technologies, Inc. Miscellaneous Commercial ServicesCommercial Services Manufacturer of solid-state storage arrays | Commercial Services |
Spire Global Subsidiary, Inc.
Spire Global Subsidiary, Inc. Miscellaneous Commercial ServicesCommercial Services Provides affordable space exploration services | Commercial Services |
Breather Products, Inc.
Breather Products, Inc. Internet Software/ServicesTechnology Services Operates as an online platform that provides booking of office spaces for the events and meetings | Technology Services |
Udisense, Inc.
 Udisense, Inc. Packaged SoftwareTechnology Services Develops baby monitors and computer application software for mobile phones and other wireless devices | Technology Services |
Ursa Space Systems, Inc.
 Ursa Space Systems, Inc. Miscellaneous Commercial ServicesCommercial Services Provides geospatial services using radar satellite imagery | Commercial Services |
Pilot Fiber, Inc.
Pilot Fiber, Inc. Major TelecommunicationsCommunications Provides internet services | Communications |
WaveXR, Inc.
WaveXR, Inc. Internet Software/ServicesTechnology Services Provides virtual entertainment platform services | Technology Services |
BlackSky Global LLC
 BlackSky Global LLC Packaged SoftwareTechnology Services Develops satellite-imaging-as-a-service software | Technology Services |
Pattern Brands LLC (New York)
 Pattern Brands LLC (New York) Advertising/Marketing ServicesCommercial Services Operates as an online branding platform and provides e-commerce services | Commercial Services |
Blacksky Holdings, Inc.
Blacksky Holdings, Inc. Specialty TelecommunicationsCommunications Operates as a satellite imagery and data company | Communications |
Spire Global, Inc.
 Spire Global, Inc. Packaged SoftwareTechnology Services Operates as a space-to-cloud analytics company that provides space-based data, analytics and space services | Technology Services |
Dockery Farms Foundation
 Dockery Farms Foundation Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment | Miscellaneous |
Blacksky Technology, Inc.
 Blacksky Technology, Inc. Packaged SoftwareTechnology Services Provides real-time geospatial intelligence and global monitoring services | Technology Services |
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