MNTKMontauk Renewables, Inc.

$2.13-3.8% 1Y

Is the business good?

Good

Margins widening. That is the only one of 4 checks this filer's data supports, so take it as a single data point rather than a settled answer.

1 good, 3 without data
Margin direction, 3 years+2.3 ptsderived

Operating margin has widened over the past few years, the business is getting more profitable per dollar of sales.

Where this answer is blind. The F-score rewards improvement, so an already-elite company can score mid-pack.

How good a business is MNTK?

Montauk Renewables, Inc. earns 0.22% on the capital it employs against a 9.0% cost of capital, so growth costs more than it returns.

0.22%

Return on invested capital · cost of capital 9.0% · 8.8 points below what the capital costs: growth destroys value

Operating margin
0.59%

Operating margin · Specialty Chemicals median 7.4% · 12 months to Q2 2026

Share count, year on year
+0.63%

Share count, year on year · flat: no meaningful dilution

Operating margin by fiscal year
YearOperating margin
FY20203.6%
FY20212.3%
FY202222%
FY202314%
FY20249.2%
FY20250.48%
Details›
Operating margin12 months to Q2 2026
0.59%
Net margin12 months to Q2 2026
4.2%
Free cash flow margin
−44%
Revenue, trailing twelve months
$189M
Free cash flow, trailing twelve months
−$83M
Net income, trailing twelve months
$7.9M
Return on invested capitaloperating profit after tax ÷ debt + equity − cash
0.22%

Margins, capital and share counts from the statements as filed with the SEC; cash conversion is operating cash flow over operating profit after tax.

Customers and suppliers

Who buys from MNTK and who it buys from, as the companies report it.

17%of revenue comes from Valero Energy, the largest of 2 disclosed customers
Customerswho buys
Supplierswho it buys from

None disclosed.

A company has to disclose every customer behind 10% or more of its revenue. Each share comes from the latest annual report of the company that states it and shows on both companies’ pages; MNTK’s own figures are from its FY2025 10-K. Smaller customers and suppliers go unreported.