Funding round
STAX Engineering Growth
Reported as "Growth Equity"
STAX Engineering, which works in emissions capture and control technology development in Long Beach, raised $150M in a Growth round announced on 30 Jun 2026. 1 firm took part. It is STAX Engineering's fourth venture round on record; the one before was a Growth in Mar 2025.
$150M
Amount raised
Not disclosed
Post-money valuation
1
Investors
no lead named
Valuation
What this round says about the price
STAX Engineering did not disclose a valuation in this round. It came 15 months after STAX Engineering's Growth. It is 37% of the $410M STAX Engineering has raised in the venture rounds on record. No later venture round is on record for STAX Engineering.
STAX Engineering's funding rounds
STAX Engineering has 4 venture rounds on record and 1 other deal. This one is highlighted.
Investors
Who put money in
1 firm took part; no lead investor was named.
Investors
- backs 70 venture-backed companies new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, geographic expansion, scaling operations and working capital.
- Product development
- Geographic expansion
- Scaling operations
- Working capital
Comparable rounds
How it compares
The closest in time, other companies' Growth rounds in Environmental Engineering Services:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Environmental Engineering Services | 6 Apr 2026 | $220M | not disclosed | not named |
| Environmental Engineering Services | 17 Sep 2026 | undisclosed | not disclosed | Battery Ventures |
| Environmental Engineering Services | 3 Dec 2025 | $4.4M | not disclosed | Vertis SGR |
| Climeworks Environmental Engineering Services | 2 Jul 2025 | $162M | $1.10B | BigPoint Holding and Partners Group |
Sources
Where this comes from
Reported by 6 sources. The deal data marks this round as not yet confirmed by an official announcement. Unconfirmed
Questions
Frequently asked
How much did STAX Engineering raise in its Growth round?
STAX Engineering raised $150M in its Growth round, announced in Jun 2026.
Which investors took part in STAX Engineering's Growth round?
Bain Capital.
What was STAX Engineering's valuation at the Growth round?
It was not disclosed.