# Noble Gas Systems funding: rounds and investors > Noble Gas Systems has raised $5.7M across 2 rounds since 2025. Investors include AP Ventures, National Science Foundation and Accel. Source: https://millionrounds.com/company/noble-gas-systems (Millionrounds; every figure on the page links to its filing or article) United States · [Series B startup](https://millionrounds.com/companies) # Who invested in *Noble Gas Systems* 2 rounds we have observed, with the 5 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Cleantech Energy Oil & Gas Raised 7 months ago Funding summary Updated 26 Oct 2026 **$5.7M** raised across 2 rounds since 2025, from 2 sources **$4.2M** Series B **$1.5M** Round - **Latest round:** Round, $1.5M Apr 2026 - **Biggest round:** $4.2M Series B · Mar 2025 - **Investors:** 5 (1 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2026 **$4.2M** Series B **$1.5M** Round - **First round:** Series B, $4.2M - **Biggest round:** $4.2M - **Between rounds:** 13 months ## The rounds - **Apr 2026** Round **$1.5M** No investor was named in the report. Filed with the SEC (Form D); no report of this raise yet SEC filing: $1.5M sold, first sale Apr 2026 - **Mar 2025** Series B **$4.2M** *5 new* [AP Ventures](https://millionrounds.com/fund/ap-ventures) Lead [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Accel](https://millionrounds.com/fund/accel) [ALIAD (Air Liquide Venture Capital)](https://millionrounds.com/fund/aliad-air-liquide-venture-capital) [NOVA by Saint-Gobain](https://millionrounds.com/fund/nova-by-saint-gobain) Reported by AP Ventures SEC filing: $4.2M sold, first sale Feb 2025 ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series B** 2025 **Round** 2026 [AP Ventures](https://millionrounds.com/fund/ap-ventures) L [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Accel](https://millionrounds.com/fund/accel) [ALIAD (Air Liquide Venture Capital)](https://millionrounds.com/fund/aliad-air-liquide-venture-capital) [NOVA by Saint-Gobain](https://millionrounds.com/fund/nova-by-saint-gobain) ## Everyone who backed them [AP Ventures](https://millionrounds.com/fund/ap-ventures) VC firm **1** round, led 1 [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round [Accel](https://millionrounds.com/fund/accel) VC firm **1** round [ALIAD (Air Liquide Venture Capital)](https://millionrounds.com/fund/aliad-air-liquide-venture-capital) VC firm **1** round [NOVA by Saint-Gobain](https://millionrounds.com/fund/nova-by-saint-gobain) Growth equity **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=noble-gas-systems). ## Also claim to have backed them These 2 firms list Noble Gas Systems as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [In-Q-Tel](https://millionrounds.com/fund/iqt) Accelerator Per its own site [Third Shore Group](https://millionrounds.com/fund/third-shore-group) Advisor Per its own site ## Quick answers about Noble Gas Systems ### Who invested in Noble Gas Systems? Noble Gas Systems's investors include AP Ventures, National Science Foundation, Accel, ALIAD (Air Liquide Venture Capital) and NOVA by Saint-Gobain. ### How much has Noble Gas Systems raised? Noble Gas Systems has raised $5.7M across 2 rounds since 2025. ### When did Noble Gas Systems last raise? Noble Gas Systems's most recent round, $1.5M, was in Apr 2026. ### What was Noble Gas Systems's biggest round? Noble Gas Systems's largest round on record is $4.2M (Series B), in Mar 2025, led by AP Ventures. ### Who backed Noble Gas Systems first? Noble Gas Systems's first round on record, in Mar 2025, was backed by AP Ventures, National Science Foundation and Accel and 2 others. ### What stage is Noble Gas Systems at? Noble Gas Systems's latest named round is a Series B, in Mar 2025. ### Where is Noble Gas Systems based? Noble Gas Systems is based in the United States. ### Who led Noble Gas Systems's rounds? AP Ventures led the Series B in 2025. ## Companies like Noble Gas Systems In the same sector, and raised in the last eighteen months. [**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)[**Pivot Energy** $500M · Oct 2026](https://millionrounds.com/company/pivot-energy)[**Pennsylvania American Water** $43M · Oct 2026](https://millionrounds.com/company/pennsylvania-american-water)[**Peak Energy** $163M · Oct 2026](https://millionrounds.com/company/peak-energy)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app