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Side-by-side financial comparison of Alkermes plc. (ALKS) and Kosmos Energy Ltd. (KOS). Click either name above to swap in a different company.

Alkermes plc. is the larger business by last-quarter revenue ($384.5M vs $294.6M, roughly 1.3× Kosmos Energy Ltd.). On growth, Alkermes plc. posted the faster year-over-year revenue change (-10.6% vs -25.9%). Over the past eight quarters, Alkermes plc.'s revenue compounded faster (4.8% CAGR vs -16.5%).

Alkermes plc is a fully-integrated biopharmaceutical company that focuses on developing medicines for psychiatric and neurological disorders. The company was founded in 1987 by Michael Wall. In September 2011 Alkermes, Inc. merged with Elan Drug Technologies (EDT), the former drug formulation and manufacturing division of Élan Corporation, plc. The company is headquartered in Dublin, and has an R&D center in Waltham, Massachusetts, and a manufacturing facility in Wilmington, Ohio.

Kosmos Energy is an American upstream oil company founded and based in Dallas, Texas. While previously incorporated in Bermuda, Kosmos has reincorporated in Delaware. The company holds production and development operations offshore Ghana, Equatorial Guinea, and Gulf of Mexico, while holding a development project offshore Mauritania and Senegal, and exploration licenses offshore Namibia, São Tomé and Príncipe and Suriname. It was previously involved in exploration offshore Morocco and Western ...

ALKS vs KOS — Head-to-Head

Bigger by revenue
ALKS
ALKS
1.3× larger
ALKS
$384.5M
$294.6M
KOS
Growing faster (revenue YoY)
ALKS
ALKS
+15.3% gap
ALKS
-10.6%
-25.9%
KOS
Faster 2-yr revenue CAGR
ALKS
ALKS
Annualised
ALKS
4.8%
-16.5%
KOS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ALKS
ALKS
KOS
KOS
Revenue
$384.5M
$294.6M
Net Profit
$49.3M
Gross Margin
88.0%
Operating Margin
15.1%
-125.7%
Net Margin
12.8%
Revenue YoY
-10.6%
-25.9%
Net Profit YoY
-66.3%
EPS (diluted)
$0.29
$-0.80

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
ALKS
ALKS
KOS
KOS
Q4 25
$384.5M
$294.6M
Q3 25
$394.2M
$311.0M
Q2 25
$390.7M
$392.6M
Q1 25
$306.5M
$290.1M
Q4 24
$430.0M
$397.6M
Q3 24
$378.1M
$407.8M
Q2 24
$399.1M
$447.8M
Q1 24
$350.4M
$422.3M
Net Profit
ALKS
ALKS
KOS
KOS
Q4 25
$49.3M
Q3 25
$82.8M
$-124.3M
Q2 25
$87.1M
$-87.7M
Q1 25
$22.5M
$-110.6M
Q4 24
$146.5M
Q3 24
$92.4M
$45.0M
Q2 24
$91.4M
$59.8M
Q1 24
$36.8M
$91.7M
Gross Margin
ALKS
ALKS
KOS
KOS
Q4 25
88.0%
Q3 25
86.9%
Q2 25
87.3%
Q1 25
83.9%
Q4 24
85.6%
Q3 24
83.3%
Q2 24
84.6%
Q1 24
83.3%
Operating Margin
ALKS
ALKS
KOS
KOS
Q4 25
15.1%
-125.7%
Q3 25
22.6%
-34.2%
Q2 25
23.8%
-16.2%
Q1 25
4.5%
-32.4%
Q4 24
37.8%
-8.5%
Q3 24
27.7%
26.1%
Q2 24
27.5%
30.2%
Q1 24
12.4%
33.6%
Net Margin
ALKS
ALKS
KOS
KOS
Q4 25
12.8%
Q3 25
21.0%
-40.0%
Q2 25
22.3%
-22.3%
Q1 25
7.3%
-38.1%
Q4 24
34.1%
Q3 24
24.4%
11.0%
Q2 24
22.9%
13.3%
Q1 24
10.5%
21.7%
EPS (diluted)
ALKS
ALKS
KOS
KOS
Q4 25
$0.29
$-0.80
Q3 25
$0.49
$-0.26
Q2 25
$0.52
$-0.18
Q1 25
$0.13
$-0.23
Q4 24
$0.88
$0.00
Q3 24
$0.55
$0.09
Q2 24
$0.53
$0.12
Q1 24
$0.21
$0.19

Balance Sheet & Financial Strength

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

Metric
ALKS
ALKS
KOS
KOS
Cash + ST InvestmentsLiquidity on hand
$388.6M
$91.5M
Total DebtLower is stronger
$3.1B
Stockholders' EquityBook value
$1.8B
$528.6M
Total Assets
$2.5B
$4.7B
Debt / EquityLower = less leverage
5.78×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ALKS
ALKS
KOS
KOS
Q4 25
$388.6M
$91.5M
Q3 25
$616.4M
$64.0M
Q2 25
$521.2M
$51.7M
Q1 25
$399.8M
$49.8M
Q4 24
$291.1M
$85.0M
Q3 24
$396.3M
$51.6M
Q2 24
$535.1M
$173.8M
Q1 24
$420.8M
$254.3M
Total Debt
ALKS
ALKS
KOS
KOS
Q4 25
$3.1B
Q3 25
$3.0B
Q2 25
$2.9B
Q1 25
Q4 24
$2.7B
Q3 24
Q2 24
Q1 24
Stockholders' Equity
ALKS
ALKS
KOS
KOS
Q4 25
$1.8B
$528.6M
Q3 25
$1.7B
$898.8M
Q2 25
$1.6B
$1.0B
Q1 25
$1.5B
$1.1B
Q4 24
$1.5B
$1.2B
Q3 24
$1.3B
$1.2B
Q2 24
$1.3B
$1.1B
Q1 24
$1.3B
$1.1B
Total Assets
ALKS
ALKS
KOS
KOS
Q4 25
$2.5B
$4.7B
Q3 25
$2.3B
$5.1B
Q2 25
$2.3B
$5.2B
Q1 25
$2.1B
$5.3B
Q4 24
$2.1B
$5.3B
Q3 24
$2.2B
$5.5B
Q2 24
$2.2B
$5.4B
Q1 24
$2.1B
$5.4B
Debt / Equity
ALKS
ALKS
KOS
KOS
Q4 25
5.78×
Q3 25
3.31×
Q2 25
2.80×
Q1 25
Q4 24
2.29×
Q3 24
Q2 24
Q1 24

Cash Flow & Capital Efficiency

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

Metric
ALKS
ALKS
KOS
KOS
Operating Cash FlowLast quarter
$170.1M
$35.3M
Free Cash FlowOCF − Capex
$170.0M
FCF MarginFCF / Revenue
44.2%
Capex IntensityCapex / Revenue
0.0%
Cash ConversionOCF / Net Profit
3.45×
TTM Free Cash FlowTrailing 4 quarters
$480.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ALKS
ALKS
KOS
KOS
Q4 25
$170.1M
$35.3M
Q3 25
$101.7M
$-27.6M
Q2 25
$150.2M
$127.2M
Q1 25
$98.8M
$-888.0K
Q4 24
$190.4M
$175.7M
Q3 24
$81.6M
$6.3M
Q2 24
$146.0M
$223.7M
Q1 24
$21.1M
$272.6M
Free Cash Flow
ALKS
ALKS
KOS
KOS
Q4 25
$170.0M
Q3 25
$84.4M
Q2 25
$137.2M
Q1 25
$88.7M
Q4 24
$180.6M
Q3 24
$73.3M
Q2 24
$138.9M
Q1 24
$12.8M
FCF Margin
ALKS
ALKS
KOS
KOS
Q4 25
44.2%
Q3 25
21.4%
Q2 25
35.1%
Q1 25
28.9%
Q4 24
42.0%
Q3 24
19.4%
Q2 24
34.8%
Q1 24
3.6%
Capex Intensity
ALKS
ALKS
KOS
KOS
Q4 25
0.0%
Q3 25
4.4%
Q2 25
3.3%
Q1 25
3.3%
Q4 24
2.3%
Q3 24
2.2%
Q2 24
1.8%
Q1 24
2.4%
Cash Conversion
ALKS
ALKS
KOS
KOS
Q4 25
3.45×
Q3 25
1.23×
Q2 25
1.72×
Q1 25
4.40×
Q4 24
1.30×
Q3 24
0.88×
0.14×
Q2 24
1.60×
3.74×
Q1 24
0.57×
2.97×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ALKS
ALKS

Vivitrol$124.1M32%
Aristada And Aristada Initio$97.2M25%
LYBALVI$94.1M24%
Royalty$65.7M17%
Manufacturing Revenue$3.3M1%

KOS
KOS

Ghana Segment$134.6M46%
Gulf Of America$80.7M27%
Mauritania And Senegal$54.9M19%
Equatorial Guinea Segment$24.3M8%

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