Ireland

Top 8 largest Irish Companies in the Biotechnology industry by Market Cap

This is the list of the largest public listed companies in the Biotechnology industry from Ireland by market capitalization with links to their reference stock.

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Top Biotechnology Companies from Ireland as of Jan. 01, 2026

Rank Company Market Cap (USD) Country Sector Industry
1 Jazz Pharmaceuticals plc $10.52 B Ireland Irish Healthcare Irish Biotechnology
2 Alkermes plc $4.67 B Ireland Irish Healthcare Irish Biotechnology
3 Prothena Corporation plc $495.2 M Ireland Irish Healthcare Irish Biotechnology
4 Amarin Corporation plc $285.3 M Ireland Irish Healthcare Irish Biotechnology
5 Malin Corp plc $42.4 M

(July 1, 2025)

 Ireland Irish Healthcare Irish Biotechnology
6 Iterum Therapeutics plc $16.6 M Ireland Irish Healthcare Irish Biotechnology
7 Nabriva Therapeutics plc $4.5 M

(Oct. 1, 2023)

 Ireland Irish Healthcare Irish Biotechnology
8 Ovoca Bio plc $12,622 Ireland Irish Healthcare Irish Biotechnology

Top Biotechnology Companies from Ireland as of Jan. 01, 2026

1. Jazz Pharmaceuticals plc

Company Profile: Jazz Pharmaceuticals plc
Market Cap (USD): $10.52 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

2. Alkermes plc

Company Profile: Alkermes plc
Market Cap (USD): $4.67 B
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

3. Prothena Corporation plc

Company Profile: Prothena Corporation plc
Market Cap (USD): $495.2 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

4. Amarin Corporation plc

Company Profile: Amarin Corporation plc
Market Cap (USD): $285.3 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

5. Malin Corp plc

Company Profile: Malin Corp plc
Market Cap (USD): $42.4 M (July 1, 2025)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

6. Iterum Therapeutics plc

Company Profile: Iterum Therapeutics plc
Market Cap (USD): $16.6 M
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

7. Nabriva Therapeutics plc

Company Profile: Nabriva Therapeutics plc
Market Cap (USD): $4.5 M (Oct. 1, 2023)
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

8. Ovoca Bio plc

Company Profile: Ovoca Bio plc
Market Cap (USD): $12,622
Country: Ireland
Sector: Irish Healthcare
Industry: Irish Biotechnology

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