DiamondStream Partners
VC Fund
Seattle, United States
DiamondStream Partners is a VC fund in Seattle focused on Aerospace and Software. DiamondStream Partners is the manager of a thematic fund that invests in travel transformation. The firm seeks to invest in travel and aviation related companies with solid growth prospects in existing markets that have potential for accelerated growth from new technology trends. The Managing Partners co-founded Volaris and are seasoned aviationexperts with investing, technology, and operating backgrounds, and apply a unique vertical industry approach informed by drivers of industry demand.
- Total investments:
- 10
- Last investment:
- Lead investor:
- 40%
Last updated:
For AI agents: llms.txt
Industries DiamondStream Partners invests in
Stages DiamondStream Partners invests in
Countries DiamondStream Partners invests in
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Brian Flynn
|
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William Dean Donovan
|
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David Spurlock
|
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2 more contacts available
Investment Focus
Industry
- Aerospace 5 (50%)
- Software 3 (30%)
- Manufacturing 3 (30%)
- SaaS 2 (20%)
- Drones 2 (20%)
Stage
- Series A 5 (50%)
- Series B 2 (20%)
- Funding Round 1 (10%)
- Venture - Series Unknown 1 (10%)
Country
- United States 6 (60%)
- Switzerland 2 (20%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
|
Brian Flynn
Co-Founder & Managing Director
|
Co-Founder & Managing Director | Total investments: 2 | Find email | |
|
William Dean Donovan
Co-Founder & Managing Director
|
Co-Founder & Managing Director | Total investments: 2 | Find email | |
|
David Spurlock
Managing Director
|
Managing Director | Total investments: 1 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Wingtra
|
Wingtra is a professional drone manufacturer based in Zurich, Switzerland. The company produces the VTOL WingtraOne drone, which collects high-precision aerial data for surveying and mapping applications. Since its market entry in 2017, Wingtra has partnered with more than 50 of the biggest surveying equipment dealers across the globe, such as RDOInc. and SITECH. | Series B / Aug 15, 2024 | |
SwissDrones Operating AG
|
SwissDrones Operating AG is a Swiss aerospace company that develops and supports long-endurance unmanned helicopter systems for complex commercial, public-safety and government missions.The company’s aircraft are designed for operations requiring greater endurance, payload capacity, reliability and range than conventional small drones, includingenergy and utility inspection, maritime surveillance, environmental monitoring, emergency response, logistics and defense-adjacent applications.SwissDrones’ fielded SDO 50 platform has been used in complex BVLOS and infrastructure-inspection programs in Europe, Australia, North America, South America and Asia. The company is also developing the SD 120, a next-generation unmanned rotorcraft intended to provide increased payload, endurance and operating capability for advanced commercial and government missions.SwissDrones Operating AG is the principal aircraft technology, engineering and manufacturing subsidiary of Xplorate Group, Inc. Its responsibilities include research and development, aircraft design, intellectual property, airworthiness, production, maintenance, training and technical support. | $10M / Series B / May 13, 2024 | |
AlarisPro
|
AlarisPro offers cloud-based B2B SaaS solutions on a subscriber basis as well as complementing hardware products. The AlarisPro fleet management platform is purpose-built and optimized for the UAS industry. It consolidates all elements of UAS fleet management, aircraft, pilots, projects and maintenance with an emphasis on continued airworthinessand safety. It allows for component-level tracking and record-keeping of aircraft performance and utilization, system health, maintenance and issues encountered. Beyond the individual user, AlarisPro uses the aggregated crowd-sourced real-world reliability data to predict failure rates and generate maintenance advisories and early warnings for the entire community. The development and features of AlarisPro were driven by the team’s recognition that available off-the-shelf mission management software does not provide the capabilities needed to ensure safety and efficiency in the industry now and in the future. | Apr 25, 2023 | |
|
Wingtra
|
Wingtra is a professional drone manufacturer based in Zurich, Switzerland. The company produces the VTOL WingtraOne drone, which collects high-precision aerial data for surveying and mapping applications. Since its market entry in 2017, Wingtra has partnered with more than 50 of the biggest surveying equipment dealers across the globe, such as RDOInc. and SITECH. | $22M / Series B / Mar 21, 2023 | |
|
SwissDrones Operating AG
|
SwissDrones Operating AG is a Swiss aerospace company that develops and supports long-endurance unmanned helicopter systems for complex commercial, public-safety and government missions.The company’s aircraft are designed for operations requiring greater endurance, payload capacity, reliability and range than conventional small drones, includingenergy and utility inspection, maritime surveillance, environmental monitoring, emergency response, logistics and defense-adjacent applications.SwissDrones’ fielded SDO 50 platform has been used in complex BVLOS and infrastructure-inspection programs in Europe, Australia, North America, South America and Asia. The company is also developing the SD 120, a next-generation unmanned rotorcraft intended to provide increased payload, endurance and operating capability for advanced commercial and government missions.SwissDrones Operating AG is the principal aircraft technology, engineering and manufacturing subsidiary of Xplorate Group, Inc. Its responsibilities include research and development, aircraft design, intellectual property, airworthiness, production, maintenance, training and technical support. | Venture - Series Unknown / Jan 04, 2023 | |
Volantio
|
Volantio Inc. is a software as a services company focused on helping airlines maximize unit revenues and decrease costs through greater capacity utilization, while providing customers with better predictability and control over their travel journey. Our web-based platform enables airlines to dynamically re-accommodate passengers in a number ofsituations - increasing yield, reducing operational costs, increasing NPS and injecting control and predictability back into the travel journey. Volantio's headquarters are located in Atlanta, GA with team members in the Netherlands and Australia. We work with some of the largest airlines in the world including Qantas, Alaska Airline, Iberia, and more. | $6M / Series A / Sep 29, 2022 | |
VerdeGo Aero
|
VerdeGo Aero is building propulsion technologies for the next generation of aircraft.erdeGo Aero was founded in 2017 by a team of experienced pioneers with years of expertise with hybrid-electric and battery-electric aircraft. VerdeGo Aero began the development of a revolutionary hybrid-electric VTOL aircraft and the internal technologies thatwould enable it to be successful. During this development process, VerdeGo Aero™ created its hybrid-electric IDEP powertrain architecture to enable its aircraft to deliver performance far beyond what battery-electric aircraft were capable of. | $12M / Series A / Jul 27, 2022 | |
Elroy Air
|
Elroy Air is a logistics company that specializes in the fields of logistics, robotics, and air transportation. Its air cargo system features rotor-based vertical takeoff and landing (VTOL) and transitions to wing-based cruise flight for long-range. It was founded in 2016 and headquartered in San Francisco, California. | $40M / Series A / Aug 04, 2021 | |
GPMS
|
GPMS offers breakthrough solutions for helicopter, eVTOL, drones, and ground vehicle operators. Allowing you to remotely monitor fleet health on one clean dashboard, Foresight’s smart sensors uncover when critical components are starting to wear and our prognostic algorithms display when maintenance may be required. In addition to mechanical &engine health monitoring, our advanced health and usage monitoring system tracks flight data, exceedances, and guides rotor track & balance. Foresight gives maintainers the power to predict, understand, and perform. | Series A / Feb 16, 2021 | |
Stellar Labs
|
Stellar is an advanced commercial operations system created for private aviation combined with an all-digital distribution network. Stellar is reimagining and revolutionizing the business aviation industry with a suite of integrated, cloud-based applications. Its solution is simple enough for single-aircraft operations, yet comprehensive and robustenough to handle the most complex operations with large fleets and multiple bases.It was founded in 2014 and is headquartered in Burlingame, California. | $26.3M / Series A / Oct 05, 2017 |
Co-Investors
EquityPitcher Ventures
2 deals together
Ingleside Investors
2 deals together
ACE & Company
1 deal together
Alaska Airlines
1 deal together
Amadeus
1 deal together
Amadeus Ventures
1 deal together
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FAQ
What does DiamondStream Partners invest in?
DiamondStream Partners invests primarily in Aerospace, Software and Manufacturing startups, most often at Series A and Series B stage. Most of the 10 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact DiamondStream Partners?
Public channels for DiamondStream Partners include LinkedIn and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at DiamondStream Partners?
The team at DiamondStream Partners includes Brian Flynn (Co-Founder & Managing Director), William Dean Donovan (Co-Founder & Managing Director) and David Spurlock (Managing Director). The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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