
Symphony
Turbofan propulsion system under development for the Overture airliner.
- Unveiled
- Dec 13, 2022
- Milestone
- Dec 2, 2025
Photo: Courtesy of Boom Supersonic · Editorial use (company media kit)


Startup · United States
HQ Englewood, United StatesFounded 201451-200 employees
Developer of the Overture supersonic airliner and Symphony propulsion system.

Turbofan propulsion system under development for the Overture airliner.
Photo: Courtesy of Boom Supersonic · Editorial use (company media kit)

Supersonic passenger airliner under development by Boom Supersonic.
Photo: Courtesy of Boom Supersonic · Editorial use (company media kit)
Newest unveiled first. Open a product for its milestone timeline, components and sources.
| Announced | Stage | Valuation | Basis |
|---|---|---|---|
| Dec 15, 2020 | Series C | $1.00B | Basis not stated |
| Dec 9, 2025 | Growth | $1.50B | Post-money |
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Dec 9, 2025 | Growth | $300M | $1.50B | Darsana Capital Partners | Altimeter Capital, Bessemer Venture Partners, Robinhood Ventures, Y Combinator | Confirmed |
| Dec 13, 2024 | Undisclosed | $100M | — | — | Bessemer Venture Partners, Sam Altman, Y Combinator | Reported |
| Nov 9, 2023 | Strategic | Undisclosed | — | — | NEOM Investment Fund | Confirmed |
| Mar 30, 2023 | Undisclosed | Undisclosed | — | — | — | Reported |
| Jan 11, 2022 | Grant | ~$60.0M | — | — | U.S. Air Force | Reported |
| Apr 15, 2021 | Undisclosed | $45.0M | — | Prime Movers Lab | — | Reported |
| Dec 15, 2020 | Series C | $50.0M | $1.00B? | Celesta Capital, WRVI Capital (Walden Riverwood Ventures) | — | Reported |
| Jan 4, 2019 | Series B | $100M | — | Emerson Collective | Caffeinated Capital, Sam Altman, SV Angel, Y Combinator | Reported |
| Dec 5, 2017 | Strategic | $10.0M | — | Japan Airlines | — | Reported |
| Mar 22, 2017 | Series A | $33.0M | — | — | 8VC, Caffeinated Capital, Y Combinator | Confirmed |
| 2016 | Seed | ~$2.1M | — | — | Homebrew, Y Combinator | Speculative |
Totals add known amounts using recorded USD conversions where available; other currencies are shown separately. A ~ marks an estimated amount.
Head of Manufacturing Infrastructure ↗
Englewood, CO · Full-time · Manufacturing
Availability unverified · Bright Data / LinkedIn
Observed Oct 5, 2026
Englewood, CO · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Observed Oct 5, 2026
Englewood, CO · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Observed Oct 5, 2026
Englewood, CO · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Observed Oct 5, 2026
Englewood, CO · Full-time · Other
Availability unverified · Bright Data / LinkedIn
Observed Oct 5, 2026
A sample of observed listings, not a total vacancy count. Availability may have changed since collection. Categories are inferred from job titles.
Employee-profile counts reflect LinkedIn profiles associated with the company, not verified headcount. One observation establishes a baseline; it does not establish growth.
Boom · Supports Organization · name
“Boom Supersonic | The Future of Supersonic Travel”
LinkedIn via Bright Data · Supports Organization · company size, Organization · founded, Organization · headquarters, Organization · logo, Organization · url
“{"company_size": "51-200 employees"}”
Boom Supersonic · Dec 13, 2022 · Supports System, System · system component:boom-symphony
“today announced Symphony, a new propulsion system designed and optimized for its Overture supersonic airliner”
Boom Supersonic · Jan 4, 2019 · Supports Organization, System
“advance the development of its Mach-2.2 commercial airliner called Overture”
Boom Supersonic · Dec 9, 2025 · Supports Funding round · amount
“The company also closed a $300 million funding round led by Darsana Capital Partners”
BusinessDen · Dec 9, 2025 · Supports Funding round · post money valuation usd
“gives the Centennial-based company a $1.5 billion post-money valuation”
The News & Observer · Dec 16, 2024 · Supports Funding round · amount
“announced it has raised $100 million from some of the country’s most prominent tech investors”
Boom Supersonic · Nov 9, 2023 · Supports Funding round
“The company also confirmed closing of an investment round, including a strategic investment from the NEOM Investment Fund (NIF).”
ASDNews · Jan 12, 2022 · Supports Funding round · amount
“a three year strategic partnership with the U.S. Air Force valued at up to $60 million”
Aviation Week · Apr 16, 2021 · Supports Funding round · amount
“BOOM SUPERSONIC received $45m investment from PRIME MOVERS LAB to support development of Overture.”
Built In · Dec 16, 2020 · Supports Funding round · amount
“just closed on $50 million in new funding in a round led by WRVI Capital”
Celesta Capital · Dec 15, 2020 · Supports Funding round
“Celesta leads investment in supersonic jet”
Bloomberg Law · Dec 15, 2020 · Supports Funding round · post money valuation usd
“will bring the company’s valuation to more than $1 billion”
AppleInsider · Jan 8, 2019 · Supports Funding round
“The new capital was led by the Emerson Collective”
TechCrunch · Jan 4, 2019 · Supports Funding round · amount
“closed a $100 million Series B funding round led by Emerson Capital”
The Denver Post · Dec 5, 2017 · Supports Funding round · amount
“said Japan Airlines will invest $10 million in the company”
Boom Supersonic · Mar 22, 2017 · Supports Funding round · amount
“today announced its $33 million Series A round.”
Forge · Supports Funding round
“The latest funding round for Boom Supersonic was on Mar 30, 2023.”
Wefunder · Supports Funding round
“$100M just closed: Alex Gerko, Bessemer, Michael Moritz, Paul Graham, Reid Hoffman, Sam Altman, YC.”
Crunchbase · Supports Funding round
“Funding Type Seed”
U.S. House of Representatives · Supports Role
“Blake Scholl is the Chief Executive Officer at Boom Supersonic, which he founded in September 2014”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.