Altaeros
Boston, US · Founded 2010 · 39 employees on LinkedIn · 3 known investors
Altaeros designs and manufactures autonomous tethered aerostat systems, controlled by its Aerostat Autopilot software, for commercial and government applications including telecommunications, border security, and defense surveillance. Spun out of MIT in 2010, the company deploys aerostats in the US and internationally, offering products such as the SuperTower aerial cell tower and the ST-400 multi-mission aerostat.
Also known as Altaeros Energies
Founders & leadership
Altaeros was founded in 2010 by Adam Rein and Ben Glass.
Board
Investors · 3
Reported raises · per SEC filings
Form D private placements$59.7M disclosed across 5 rounds · 2014–2024
▶$5.6MraisedJun 2025 · 4 investors · Other TechnologyRule 506(b)
- R. Gerrard SalemmeDirector
- Shigeki MiwaDirector
- Mauricio QuintanaDirector
- Jeff Lloyd-JonesExecutive Officer, Director
- Stephen BrackettDirector
- John BaileyExecutive Officer
- Arunas ChesonisDirector
- Benjamin GlassExecutive Officer, Director, Promoter
- Offering amount
- $9M
- Amount sold
- $5.6M
- First sale
- Dec 2024
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$8.5MraisedMar 2024 · 7 investors · Other TechnologyRule 506(b)
- Stephen BrackettDirector
- R. Gerrard SalemmeDirector
- Shigeki MiwaDirector
- Arunas ChesonisDirector
- Benjamin GlassExecutive Officer, Director, Promoter
- Ike OkonkwoExecutive Officer
- Mauricio QuintanaDirector
- Jeff Lloyd-JonesExecutive Officer, Director
- Offering amount
- $14M
- Amount sold
- $8.5M
- First sale
- Jun 2023
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$34.8MraisedJul 2022 · 10 investors · Other TechnologyRule 506(b)
- R. Gerrard SalemmeDirector
- Philip ShevrinDirector
- Stephen BrackettDirector
- Benjamin GlassExecutive Officer, Director, Promoter
- Adam ReinExecutive Officer, Director, Promoter
- Shigeki MiwaDirector
- Mauricio QuintanaDirector
- Offering amount
- $34.8M
- Amount sold
- $34.8M
- First sale
- Jun 2022
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$3.8MraisedNov 2018 · 2 investors · Other TechnologyRule 506(b)
- Shigeki MiwaDirector
- Mauricio QuintanaDirector
- R. Gerrard SalemmeDirector
- Philip ShevrinDirector
- Ben GlassExecutive Officer, Director, Promoter
- Adam ReinExecutive Officer, Director, Promoter
- Offering amount
- $6M
- Amount sold
- $3.8M
- First sale
- Oct 2018
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$7.2MraisedDec 2014 · 9 investors · Other EnergyRule 506(b)
- Alain GoubauExecutive Officer, Director, Promoter
- Ben GlassExecutive Officer, Director, Promoter
- Adam ReinExecutive Officer, Director, Promoter
- Offering amount
- $12.2M
- Amount sold
- $7.2M
- First sale
- Nov 2014
- Incorporated
- Corporation, Delaware, 2010
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Altaeros develops and manufactures tethered aerostat systems that operate autonomously under its Aerostat Autopilot control software. The autopilot handles day-to-day flight operations including launch, landing and sustained flight, removing the need for an on-site crew and allowing the aerostats to maintain active flight control during high winds and other severe weather. The company positions these high-capacity, long-endurance aerial platforms as offering higher mission availability and stability than traditional aerostats, tethered drones and other aircraft.
The product line includes the ST-Flex tactical aerostat, the SuperTower aerial connectivity platform, and the ST-400, announced in March 2025, which carries more than 900 lbs of payload to altitudes above 2,500 feet AGL for longer-duration deployments in demanding environments. Altaeros serves government customers across armed forces, homeland security and emergency response, and commercial customers in network resilience, disaster response, telecom rollouts and industrial IoT.
Altaeros UK is a wholly owned subsidiary that manufactures all Altaeros aerostat envelopes as well as other high-performance inflatable vehicles and structures, including hangars, shelters and custom inflatables sold into a range of industries.
Business model
Altaeros designs and manufactures aerostat systems and supplies them together with support services, sparing and ongoing operations contracts; a UK subsidiary manufactures envelopes and other inflatable products.
Traction
Altaeros was awarded a five-year, $99M IDIQ contract from DHS/CBP for autonomous aerostats and support services. An ST-Flex deployed in Santa Teresa, New Mexico in September 2024 was followed by a second-year support, services and sparing contract announced in October 2025, with the company reporting operational availability and harsh-weather survivability during the first year of operation.
Latest developments
In October 2025 Altaeros announced a follow-on second-year DHS/CBP contract for aerostat support in Santa Teresa, New Mexico. Earlier in 2025 it unveiled the ST-400 aerostat (March 4) and announced a strategic partnership with motorsport consultancy Let's Go Racing (March 6) to apply SuperTower technology to connectivity and fan engagement in series including Formula 1, IndyCar and E1.
▸Full profile — market position, technology, go-to-market, geography
Market position
Altaeros positions its autonomous aerostats against legacy non-autonomous aerostats, tethered drones and other aircraft on the basis of mission availability and weather survivability.
Autonomous operation via Aerostat Autopilot, which the company says allows aerostats to fly without on-site crews for launch and recovery and to remain aloft in harsh weather conditions where legacy aerostats are difficult to sustain.
Technology
Aerostat Autopilot is an autonomous control system for tethered aerostats that runs launching, landing and flight operations and sustains active flight control in high winds and severe weather, which the company links to higher operational availability and reduced human exposure. Platforms include the ST-Flex tactical aerostat, the SuperTower connectivity platform and the ST-400, rated for over 900 lbs of payload above 2,500 feet AGL.
Go-to-market
Direct sales and multi-year service contracts with government agencies, complemented by commercial partnerships such as the Let's Go Racing motorsport agreement, and product sales through the Altaeros UK inflatables business.
Government users including armed forces, homeland security agencies such as US Customs and Border Protection, and emergency response organizations; commercial users in telecommunications rollout, network resilience, disaster response, industrial IoT and motorsport.
Geography
Boston, Massachusetts headquarters with activity in Fremont, New Hampshire and an operational deployment in Santa Teresa, New Mexico; a wholly owned manufacturing subsidiary, Altaeros UK, operates in the United Kingdom.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 1
by search overlapCompanies competing with Altaeros for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 5
launches, deals, and filingsFollow-on contract for aerostat support, services and sparing for a second year in Santa Teresa, New Mexico, following deployment of an ST-Flex aerostat in September 2024 for CBP border missions.
Altaeros and Let's Go Racing announced a strategic partnership to apply Altaeros' SuperTower technology to connectivity, team operations and fan engagement across motorsport series including Formula 1, IndyCar and E1.
Announced in Fremont, NH, the ST-400 carries over 900 lbs of payload to altitudes exceeding 2,500 feet AGL and uses Aerostat Autopilot for autonomous launch, recovery and flight without on-site crew.
Altaeros announced the award of a five-year Indefinite Delivery, Indefinite Quantity contract from the Department of Homeland Security, US Customs and Border Protection, for delivery and support of autonomous aerostats and related support services.
$99M source ↗
Altaeros deployed an ST-Flex aerostat in September 2024 to support border missions for DHS/CBP at a high-altitude, harsh-weather site.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 1
primary sources listed
- Altaerosaltaeros.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Altaeros do?
- Altaeros builds autonomous tethered aerostats controlled by its Aerostat Autopilot system for government and commercial missions.
- Who founded Altaeros?
- Altaeros was founded by Adam Rein, Ben Glass in 2010.
- Who are Altaeros's investors?
- Altaeros's investors include Safar Partners, SoftBank Group, In-Q-Tel.
- How much funding has Altaeros raised?
- Altaeros has disclosed $59.7M raised across 5 rounds.
- Where is Altaeros headquartered?
- Altaeros is headquartered in Boston, US.