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Side-by-side financial comparison of PERMA FIX ENVIRONMENTAL SERVICES INC (PESI) and Verastem, Inc. (VSTM). Click either name above to swap in a different company.

PERMA FIX ENVIRONMENTAL SERVICES INC is the larger business by last-quarter revenue ($15.7M vs $11.2M, roughly 1.4× Verastem, Inc.). PERMA FIX ENVIRONMENTAL SERVICES INC runs the higher net margin — -36.0% vs -876.3%, a 840.3% gap on every dollar of revenue.

Perma-Fix Environmental Services Inc provides end-to-end environmental and waste management solutions, specializing in the treatment, processing, and disposal of hazardous, radioactive, and mixed waste streams. It serves U.S. federal government agencies, nuclear facility operators, and industrial clients across the energy, manufacturing, and defense segments.

Verastem, Inc., doing business as Verastem Oncology, is an American pharmaceutical company that develops medicines to treat certain cancers. Headquartered and founded in Boston, Massachusetts, the firm is a member of NASDAQ Biotechnology Index.

PESI vs VSTM — Head-to-Head

Bigger by revenue
PESI
PESI
1.4× larger
PESI
$15.7M
$11.2M
VSTM
Higher net margin
PESI
PESI
840.3% more per $
PESI
-36.0%
-876.3%
VSTM

Income Statement — Q4 FY2025 vs Q3 FY2025

Metric
PESI
PESI
VSTM
VSTM
Revenue
$15.7M
$11.2M
Net Profit
$-5.7M
$-98.5M
Gross Margin
7.7%
Operating Margin
-20.6%
-362.2%
Net Margin
-36.0%
-876.3%
Revenue YoY
6.9%
Net Profit YoY
-62.2%
-311.1%
EPS (diluted)
$-0.31
$-1.35

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
PESI
PESI
VSTM
VSTM
Q4 25
$15.7M
Q3 25
$17.5M
$11.2M
Q2 25
$14.6M
$2.1M
Q1 25
$13.9M
Q4 24
$14.7M
Q3 24
$16.8M
$0
Q2 24
$14.0M
$10.0M
Q1 24
$13.6M
Net Profit
PESI
PESI
VSTM
VSTM
Q4 25
$-5.7M
Q3 25
$-1.8M
$-98.5M
Q2 25
$-2.7M
$-25.9M
Q1 25
$-3.6M
Q4 24
$-3.5M
Q3 24
$-9.0M
$-24.0M
Q2 24
$-4.0M
$-8.3M
Q1 24
$-3.6M
Gross Margin
PESI
PESI
VSTM
VSTM
Q4 25
7.7%
Q3 25
14.6%
Q2 25
10.6%
Q1 25
4.7%
Q4 24
4.0%
Q3 24
7.9%
Q2 24
-9.3%
Q1 24
-4.6%
Operating Margin
PESI
PESI
VSTM
VSTM
Q4 25
-20.6%
Q3 25
-10.7%
-362.2%
Q2 25
-19.8%
-2047.9%
Q1 25
-26.8%
Q4 24
-24.4%
Q3 24
-15.5%
Q2 24
-36.0%
-182.8%
Q1 24
-32.8%
Net Margin
PESI
PESI
VSTM
VSTM
Q4 25
-36.0%
Q3 25
-10.5%
-876.3%
Q2 25
-18.6%
-1213.6%
Q1 25
-25.7%
Q4 24
-23.7%
Q3 24
-53.4%
Q2 24
-28.2%
-82.6%
Q1 24
-26.1%
EPS (diluted)
PESI
PESI
VSTM
VSTM
Q4 25
$-0.31
Q3 25
$-0.10
$-1.35
Q2 25
$-0.15
$-0.62
Q1 25
$-0.19
Q4 24
$-0.23
Q3 24
$-0.57
$-0.60
Q2 24
$-0.27
$-0.31
Q1 24
$-0.26

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
PESI
PESI
VSTM
VSTM
Cash + ST InvestmentsLiquidity on hand
$137.7M
Total DebtLower is stronger
$1.9M
Stockholders' EquityBook value
$50.1M
$-15.5M
Total Assets
$88.0M
$176.9M
Debt / EquityLower = less leverage
0.04×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PESI
PESI
VSTM
VSTM
Q4 25
Q3 25
$137.7M
Q2 25
$164.3M
Q1 25
Q4 24
Q3 24
$113.2M
Q2 24
$83.4M
Q1 24
Total Debt
PESI
PESI
VSTM
VSTM
Q4 25
$1.9M
Q3 25
$1.9M
Q2 25
$2.0M
Q1 25
$2.2M
Q4 24
$2.3M
Q3 24
$2.5M
$40.5M
Q2 24
$2.2M
$40.3M
Q1 24
$2.5M
Stockholders' Equity
PESI
PESI
VSTM
VSTM
Q4 25
$50.1M
Q3 25
$55.4M
$-15.5M
Q2 25
$56.8M
$36.1M
Q1 25
$59.2M
Q4 24
$62.4M
Q3 24
$42.4M
$11.1M
Q2 24
$51.0M
$18.9M
Q1 24
$36.2M
Total Assets
PESI
PESI
VSTM
VSTM
Q4 25
$88.0M
Q3 25
$91.2M
$176.9M
Q2 25
$90.2M
$196.3M
Q1 25
$92.9M
Q4 24
$97.2M
Q3 24
$78.2M
$126.4M
Q2 24
$87.0M
$105.7M
Q1 24
$74.0M
Debt / Equity
PESI
PESI
VSTM
VSTM
Q4 25
0.04×
Q3 25
0.03×
Q2 25
0.04×
Q1 25
0.04×
Q4 24
0.04×
Q3 24
0.06×
3.66×
Q2 24
0.04×
2.14×
Q1 24
0.07×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
PESI
PESI
VSTM
VSTM
Operating Cash FlowLast quarter
$-2.1M
$-36.2M
Free Cash FlowOCF − Capex
$-4.2M
FCF MarginFCF / Revenue
-26.9%
Capex IntensityCapex / Revenue
13.4%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-15.5M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PESI
PESI
VSTM
VSTM
Q4 25
$-2.1M
Q3 25
$-4.6M
$-36.2M
Q2 25
$-1.9M
$-32.7M
Q1 25
$-2.1M
Q4 24
$-3.3M
Q3 24
$-5.6M
$-23.8M
Q2 24
$-1.3M
$-27.6M
Q1 24
$-4.5M
Free Cash Flow
PESI
PESI
VSTM
VSTM
Q4 25
$-4.2M
Q3 25
$-5.8M
Q2 25
$-2.8M
Q1 25
$-2.6M
Q4 24
$-4.5M
Q3 24
$-7.0M
Q2 24
$-1.9M
$-27.6M
Q1 24
$-4.8M
FCF Margin
PESI
PESI
VSTM
VSTM
Q4 25
-26.9%
Q3 25
-33.3%
Q2 25
-19.2%
Q1 25
-18.9%
Q4 24
-30.5%
Q3 24
-41.7%
Q2 24
-13.5%
-275.8%
Q1 24
-35.0%
Capex Intensity
PESI
PESI
VSTM
VSTM
Q4 25
13.4%
Q3 25
6.7%
Q2 25
6.2%
Q1 25
3.8%
Q4 24
8.0%
Q3 24
8.2%
Q2 24
4.3%
0.1%
Q1 24
1.8%

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

PESI
PESI

Fixed Price$11.4M73%
Services$4.3M27%

VSTM
VSTM

Segment breakdown not available.

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