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Keros Therapeutics vs X4 Pharmaceuticals

Keros Therapeutics is the larger business, with $244m of revenue in fiscal 2025 against $35.1m for X4 Pharmaceuticals (6.9 times as much). Keros Therapeutics grew faster (6769.4% against 1250.5%). Keros Therapeutics kept more of each dollar of sales as profit: a net margin of 35.7% against -225.6%. Keros Therapeutics carries less debt relative to equity (0.0% against 40.3%).

Latest fiscal yearKeros TherapeuticsKROS, 2025X4 PharmaceuticalsXFOR, 2025
Revenue $244m $35.1m
Revenue growth 6769.4% 1250.5%
Net income $87.0m −$79.2m
Operating margin 27.7% -247.4%
Net margin 35.7% -225.6%
Return on equity 19.9% -76.0%
Free cash flow $106m −$85.6m
Cash $287m $217m
Total debt $0 $75.0m
Debt to equity 0.0% 40.3%
Dividend per share — —
Dividend yield — —
Share buybacks $375m —
Employees 78 45
Market value $215m $308m
Price vs our value range — —
Moat score — —
Insider trades, 12 months 6 buys, 12 sales 1 buys, 5 sales

Each figure is from the company's latest annual report and links to the page it comes from. Fiscal years can end on different dates. Market value and the value verdict use the delayed price shown on the stock pages. Not a recommendation.

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Figures from each company's latest annual report filed with the SEC (10-K or 20-F), as reported, with the fiscal year shown. Not investment advice. How we read filings: methodology.