6K

Machinery (B2B) · North Andover, MA · Founded 2014 · Privately Held (backing)

Developer of an advanced microwave-based plasma technology designed to improve the production processes of nanomaterials. 6K is based in North Andover, MA and was founded in 2014. It was valued at $396 million at its later-stage round in Jul 2024, the last priced event on record. It has raised $298 million across 1 recorded round; the latest was a $60.1 million Series C in Dec 2021.

PMV mark · valuation
$396.0M
Oct 2026
Priced at
its later-stage round
Jul 2024
Total raised
$297.8M
Last round
Later Stage VC (Series C)
Dec 2021
What is 6K worth?
$396.0MPrivateMarketView mark · Oct 2026

Valued at $396.0M at its later-stage round, Jul 2024. Nothing has traded since.

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Valuation timeline

0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026
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Markrounds hold their value until the next priced eventMark, today
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6K funding history

1 rounds
DateRoundRaisedPost-money
Dec 2021Later Stage VC (Series C)$60.1M▮
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6K valuation

6K was valued at $396 million at its later-stage round in Jul 2024. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has 6K raised?

6K has raised $298 million in total; 1 of its rounds is on record. The largest on record was a $60.1 million Series C in Dec 2021.

How 6K's valuation is determined

Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.

For 6K, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by its last priced round. Question about this number? Full methodology →

Frequently asked about 6K

What is 6K worth?
6K is valued at $396.0M as of Oct 2026. Valued at $396.0M at its later-stage round, Jul 2024. Nothing has traded since.
How much has 6K raised?
6K has raised $297.8M in total funding across 1 recorded rounds.
When did 6K last raise?
6K last raised in Dec 2021 (Later Stage VC (Series C)), raising $60.1M.