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Vaulted Deep raises $35M in debt funding led by Mediobanca to accelerate expansion and advance infrastructure projects.

PRIVATESep 22, 2026

Amount Raised

$35 Million

Round Type

Debt Financing

HoustonManufacturingEnergyRenewable EnergyBiomass Energy

Investors

Mediobanca

Description

Vaulted Deep, a Houston-based provider of subsurface infrastructure for organic waste and carbon removal, received a $35M debt facility from Mediobanca. The financing will be used to speed up expansion and develop new sites faster through their AI-Accelerated Site Development Platform. This raise brings their total funding to $91M. CEO Julia Reichelstein leads the company as it integrates advanced technology for waste disposal and carbon removal.

Quick answer

Vaulted Deep raised $35 Million in a Debt Financing round, dated September 22, 2026. Investors: Mediobanca. Vaulted Deep is based in Houston, Texas, United States.

How much did Vaulted Deep raise?
Vaulted Deep raised $35 Million in a Debt Financing round on September 22, 2026.
Who invested in Vaulted Deep?
Mediobanca is named as investors in this round.
What does Vaulted Deep do?
Vaulted Deep is a biomass carbon removal and storage (BiCRS) carbon removal company, geologically sequestering organic wastes deep into the subsurface.
Where is Vaulted Deep based and how big is it?
Vaulted Deep is based in Houston, Texas, United States. Fundz records about 59 employees.
Who are the decision-makers at Vaulted Deep?
Fundz holds 2 contacts at Vaulted Deep. Names and contact details are shown to Fundz members.

Source: Fundz verified event record.

Who else raised in Energy and Renewable Energy around the same time

Companies in the same sectors as Vaulted Deep that raised within 45 days of this round, from Fundz verified event records.

  • ACEN raised $37M on November 6, 2026.
  • GraphEnergyTech raised $4M (Seed) on November 6, 2026.
  • RadianX raised $9M (Seed) on November 5, 2026.
  • High Energy Digital Manufacturing raised $15M (Series B) on November 5, 2026.
  • FluoRok raised $30M (Series A) on November 5, 2026.
  • CVR Energy raised $490M (Post-IPO Equity) on November 5, 2026.

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Company Information

Company

Vaulted Deep

Location

Houston, Texas, United States

About

Vaulted Deep is a biomass carbon removal and storage (BiCRS) carbon removal company, geologically sequestering organic wastes deep into the subsurface. Vaulted Deep's mission is to urgently combat climate change by permanently removing carbon from the atmosphere, while avoiding methane and protecting local land, air, and water. Vaulted Deep spun off of Advantek Waste Management Services, and is backed by Prelude Ventures, Lowercarbon Capital, Earthshot Ventures, WovenEarth Ventures, Fall Line Capital, Rethink Impact and others.

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Related People

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Vaulted Deep raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

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