Kiniksa Pharmaceuticals International, Plc (KNSA +0.24%), a biopharmaceutical company focusing on immune-mediated conditions, released its earnings for the fourth quarter of 2024 on February 25, 2025. The release highlighted the commercialization success of ARCALYST, despite financial results falling short of expectations. Kiniksa reported a quarterly EPS of -$0.12, missing the analyst consensus of $0.0241 by a wide margin. The company's revenue reached $122.5 million, slightly lagging behind the expected $123 million. The overall results pointed to mixed performance, with substantial revenue growth overshadowed by increased expenses and competitive challenges.
| Metric | Q4 2024 | Q4 Estimate | Q4 2023 | Y/Y Change |
|---|---|---|---|---|
| EPS (Diluted) | ($0.12) | $0.0241 | $0.35 | -134.3% |
| Revenue ($ millions) | $122.5 | $123.0 | $83.4 | +46.9% |
| Net Income (Loss) | ($8.9M) | N/A | $25.2M | N/A |
| Operating Expenses | $141.8M | N/A | $83.3M | +70.2% |
Source: Analyst estimates for the quarter provided by FactSet.
Overview of Kiniksa Pharmaceuticals
Kiniksa Pharmaceuticals International, Plc, specializes in developing therapies for autoimmune and inflammatory diseases focusing predominantly on cardiovascular conditions. Its lead product, ARCALYST, targets recurrent pericarditis—a condition characterized by recurring inflammation of the pericardium. ARCALYST is its sole approved commercial product and is crucial for revenue generation.
Recently, Kiniksa has aimed to enhance ARCALYST's market presence and expand its reach to patients and prescribers. Additionally, the company has been advancing its pipeline, notably with KPL-387 for recurrent pericarditis, demonstrating a strategic alignment towards cardiovascular ailments.

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Key Data Points
Quarter Highlights
During Q4 2024, Kiniksa achieved significant growth in ARCALYST net product revenue, which surged by 79% year-over-year to reach $122.5 million in the quarter, up from $71.2 million the same quarter last year. This growth underscores ARCALYST's pivotal role in Kiniksa's strategy.
However, financial results did not meet market expectations. The quarterly EPS was reported at -$0.12, far below the analyst forecast of a modest profit, translating into a significant negative earnings surprise. Operating expenses increased dramatically by 70.2% to $141.8 million due to heightened collaboration expenditures, leading to a net loss of $8.9 million compared to a net income of $25.2 million the prior year. This shift from profitability to loss weighed heavily on quarterly assessments.
Kiniksa discontinued development of abiprubart for Sjogren's Disease, pivoting towards strategic priorities in cardiovascular treatments. This decision comes alongside the company's plan to launch Phase 2/3 trials for KPL-387 by mid-2025, emphasizing its focus on recurrent pericarditis as a therapeutic area. Additionally, the termination of certain licensing agreements signifies a refined strategic direction.
In terms of shareholder returns, while there were no dividends declared in this quarter, Kiniksa continues to focus on maintaining a cash flow positive status annually. The cash position increased from $206.4 million at the end of 2023 to $243.6 million by the end of 2024.
Looking Forward
Looking ahead, Kiniksa expects ARCALYST sales to range between $560 million and $580 million for 2025, signifying robust sales growth plans. The company's commitment to developing KPL-387 and other potential cardiovascular therapies demonstrates a targeted strategy for future expansions.
Management anticipates remaining cash flow positive annually, even as operational expenses rise. Investors are advised to monitor the continued rollout of ARCALYST, the progress of KPL-387 trials, and any adjustments to market guidance as potential indicators of the company's future trajectory.