When was STAX founded?

STAX was founded in 2016 and raised its 1st funding round 8 years after it was founded.

Where is STAX located?

STAX is headquartered in Los Angeles, United States.

How many employees does STAX have?

As of Sep 30, 2026, the latest employee count at STAX is 50.

Is STAX a funded company?

STAX is a funded company, having raised a total of $50M across 3 funding rounds to date. The company's 1st funding round was a $***** Series C round, raised on Jul 17, 2024.

When was the latest funding round of STAX?

STAX's latest funding was a $***** Series C round on Feb 26, 2025, with participation from 2 investors.

Where does STAX rank among its competitors?

STAX ranks 2nd amongst 34 active competitors, of which 8 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was Newlight, which secured an undisclosed amount in Sep, 2026.

Who are the top competitors of STAX?

STAX's top competitors include Cetasol, ZERO44 and Eniram. Among them, Newlight secured the most recent funding round in September, 2026.

STAX - 2026 Company Profile, Team, Funding & Competitors

STAX is a series C company based in Los Angeles (United States), founded in 2016. It operates as a Provider of emission control and treatment system. STAX has raised $50M in funding from Upper90. The company has 34 active competitors, including 8 funded and 2 that have exited. Its top competitors include companies like Cetasol, ZERO44 and Eniram.

Company Details

STAX engineering is a provider of emission control and treatment system for maritime. It is a mobile diesel emission reduction system that removes all NOx, SOx, PM, and CO2 from both oceangoing vessels and backup generators. It can also remove emissions from ships at anchor and boiler emissions at berth.

Website: staxengineering.com
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Key Metrics

Founded Year

2016

Location

Los Angeles, United States

Stage

Series C

Total Funding

$50M in 3 rounds

Latest Funding Round

Series C, Feb 26, 2025, $*****

Investors

Upper90 & 2 more

Ranked

2^nd among 34 active competitors

Employee Count

50 as on Sep 30, 2026

Similar Companies

Cetasol & 34 more

View STAX's full profile

STAX has raised a total funding of $50M over 3 rounds. Its first funding round was on Jul 17, 2024. Its latest funding round was a Series C round on Feb 26, 2025 for $*****. 2 investors participated in its latest round. STAX has 3 institutional investors.

Here is the list of recent funding rounds of STAX:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Feb 26, 2025	4150745	Series C	4006587	5443872	2591811	4269125
Feb 26, 2025	7568573	Conventional Debt	7347224	9742712	4408591	Firstime & 1 more
Jul 17, 2024	8050203	Series C	3198061	9976412	Upper90	6624953

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View details of STAX's funding rounds and investors

STAX's employee count trend

STAX has 50 employees as of Sep 26. Here is STAX's employee count trend over the years:

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Top competitors of STAX include Cetasol, ZERO44 and Eniram. Here is the list of Top 10 competitors of STAX, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Cetasol 2021, Gothenburg (Sweden), Seed	Provider of AI-powered solutions for maritime energy optimization and fuel monitoring	$2.71M	Backing Minds, Impact X & 2 others	55/100
2nd	STAX 2016, Los Angeles (United States), Series C	Provider of emission control and treatment system	$50M	Upper90, Deutsche Bank & 1 others	51/100
3rd	ZERO44 2022, Berlin (Germany), Seed	Developer of a carbon ledger platform for the maritime industry	$2.69M	Atlantic Labs, Atlantic Labs & 2 others	48/100
4th	Eniram 2005, Helsinki (Finland), Acquired	Fuel saving system for maritime vessels	$6.5M	Conor, Ferd & 2 others	44/100
5th	Smart Green Shipping 2019, Devizes (United Kingdom), Seed	Developer of auxiliary sails for propulsion systems	$5.27M	Scottish Enterprise, Drax & 4 others	39/100
6th	Newlight 2023, Alameda (United States), Seed	Provider of emission control plugins for decarbonization and fuel consumption	$9M	lomarlabs, Undeterred Capital & 3 others	36/100
7th	OceanWings 2010, France, Unfunded	Provider of emission reduction solution	-	Normandie Littoral	36/100
8th	MONTE 2021, London (United Kingdom), Unfunded	Provider of financing and leasing solutions for transportation assets globally	-	-	35/100
9th	FUELSAVE 2012, Walldorf (Germany), Deadpooled	Provider of solution to improve fuel efficiency of engines	$37.8M	Faber, Dreamcraft Ventures & 9 others	33/100
10th	Explicit 1998, Virum (Denmark), Funding Raised	Provider of accredited emissions monitoring using drone and sensor technologies	-	EIC Fund, Europa	33/100