Latest round

Debt

Last raised

Nov 2026

Total raised

$510M

Investors

14

About 6K

, formerly known as Amastan Technologies LLC, operates as a microwave plasma technology company that offers battery materials. In September 2024, 6K Inc. 6K develops and offers battery cathode active materials (CAM) for lithium-ion batteries, additive manufacturing, renewable energy, aerospace, and consumer electronics. The company provides UniMelt®, which is a microwave-based plasma technology that utilizes microwave-based plasma to process materials into various products. The solutions offered by the company include 6K additive metal powders and alloys; battery materials; and a and a metal powder portfolio for additive manufacturing.

Who invested in 6K

14 investors across 6 rounds

See all investors in 6K

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Funding rounds

  1. Debt

    Nov 6, 2026

    Amount

    $250M

    Investors

    Locked

  2. Series E

    Sep 5, 2024

    Amount

    $82M

    Investors

    Locked

  3. Series D

    Mar 30, 2022

    Amount

    $102M

    Investors

    Locked

  4. Series C

    Sep 22, 2021

    Amount

    $51M

    Investors

    Locked

  5. Series B

    May 20, 2019

    Amount

    $11M

    Investors

    Locked

  6. Series B

    Oct 26, 2017

    Amount

    $14M

    Investors

    Locked

Questions about 6K

Who invested in 6K?

6K has 14 investors on record across 6 venture rounds. Sign up free to see every VC on the cap table and the rounds they joined.

How much funding has 6K raised?

6K has raised 6 venture rounds. Sign up free to see how much each round raised and the total.

When did 6K last raise money?

6K's most recent round on record is a Debt, in Nov 2026.

What does 6K do?

, formerly known as Amastan Technologies LLC, operates as a microwave plasma technology company that offers battery materials.

Where is 6K headquartered?

6K is headquartered in North Andover, US.

Which VCs invest in companies like 6K?

Among active investors with capital left to deploy, Kimmeridge, GEF Capital Partners, S2G Ventures and EnCap Investments back materials companies at 6K's stage. Their profiles are linked below.

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