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Stonepine Capital Management, LLC

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

92

Stocks Covered

38

Latest Filing

Feb 13, 2026

Filings

Surrozen, Inc./DE

SC 13G/A · Feb 13, 2026

3.6%

316K shares

CNS Pharmaceuticals, Inc.

SC 13G/A · Feb 13, 2026

7.9%

49K shares

Kezar Life Sciences, Inc.

SC 13G/A · Feb 13, 2026

2.1%

156K shares

Quoin Pharmaceuticals, Ltd.

SC 13G/A · Feb 3, 2026

10.6%

3.3M shares

IN8BIO, Inc.

SC 13G · Dec 22, 2025

9.9%

1.0M shares

Quoin Pharmaceuticals, Ltd.

SC 13G · Dec 16, 2025

9.9%

3.0M shares

Verastem, Inc.

SC 13G/A · Nov 13, 2025

4.3%

2.7M shares

CNS Pharmaceuticals, Inc.

SC 13G · Nov 4, 2025

5.6%

32K shares

Kezar Life Sciences, Inc.

SC 13G · Sep 8, 2025

5.2%

377K shares

AYTU BIOPHARMA, INC

SC 13G/A · Aug 13, 2025

9.9%

906K shares

Surrozen, Inc./DE

SC 13G/A · Aug 13, 2025

5.8%

509K shares

Verastem, Inc.

SC 13G · Aug 6, 2025

5.0%

2.8M shares

Surrozen, Inc./DE

SC 13G/A · May 14, 2025

9.9%

332K shares

OptiNose, Inc.

SC 13G/A · May 14, 2025

7.8%

789K shares

Inovio Pharmaceuticals, Inc.

SC 13G/A · May 14, 2025

3.8%

1.4M shares

CalciMedica, Inc.

SC 13G/A · May 14, 2025

4.6%

629K shares

Aprea Therapeutics, Inc.

SC 13G/A · May 14, 2025

4.3%

239K shares

Edesa Biotech, Inc.

SC 13G · Feb 25, 2025

9.9%

694K shares

OptiNose, Inc.

SC 13G/A · Feb 13, 2025

5.9%

589K shares

Verastem, Inc.

SC 13G/A · Feb 13, 2025

4.8%

2.2M shares

Aprea Therapeutics, Inc.

SC 13G/A · Feb 13, 2025

5.1%

286K shares

TELA Bio, Inc.

SC 13G/A · Feb 13, 2025

6.0%

2.4M shares

Inovio Pharmaceuticals, Inc.

SC 13G · Dec 24, 2024

5.2%

1.9M shares

CalciMedica, Inc.

SC 13G · Dec 13, 2024

5.4%

742K shares

Optinose, Inc.

SC 13G · Nov 20, 2024

5.4%

8.2M shares

Surrozen, Inc.

SC 13G/A · Nov 13, 2024

7.3%

245K shares

Verastem, Inc.

SC 13G/A · Nov 13, 2024

6.4%

2.6M shares

Evolus, Inc.

SC 13G/A · Nov 13, 2024

2.2%

1.4M shares

Aytu BioPharma, Inc.

SC 13G/A · Nov 13, 2024

10.0%

627K shares

Tenax Therapeutics, Inc.

SC 13G/A · Nov 13, 2024

10.0%

373K shares

Kiora Pharmaceuticals, Inc.

SC 13G/A · Nov 13, 2024

10.0%

307K shares

CalciMedica, Inc.

SC 13G/A · Nov 13, 2024

0.0%

0 shares

Rezolute, Inc.

SC 13G/A · Nov 13, 2024

0.0%

0 shares

IO Biotech, Inc.

SC 13G/A · Nov 13, 2024

0.0%

0 shares

Alimera Sciences, Inc.

SC 13G/A · Nov 13, 2024

0.0%

0 shares

TELA Bio, Inc.

SC 13G · Oct 29, 2024

7.7%

2.8M shares

Aprea Therapeutics, Inc.

SC 13G · Oct 10, 2024

6.6%

365K shares

Tenax Therapeutics, Inc.

SC 13G · Aug 15, 2024

10.0%

373K shares

Verastem, Inc.

SC 13G · Jul 29, 2024

6.7%

2.7M shares

Surrozen, Inc.

SC 13G · Apr 19, 2024

6.0%

199K shares

Urogen Pharma Ltd.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Exagen Inc.

SC 13G/A · Feb 13, 2024

3.9%

670K shares

Xeris Biopharma Holdings, Inc.

SC 13G/A · Feb 13, 2024

4.3%

5.9M shares

Third Harmonic Bio, Inc.

SC 13G/A · Feb 13, 2024

0.0%

0 shares

Scynexis, Inc.

SC 13G/A · Feb 13, 2024

3.6%

1.4M shares

Rezolute, Inc.

SC 13G/A · Feb 13, 2024

7.0%

2.8M shares

aTyr Pharma, Inc.

SC 13G/A · Feb 13, 2024

0.8%

482K shares

IO Biotech, Inc.

SC 13G/A · Feb 13, 2024

5.4%

3.6M shares

Gamida Cell Ltd.

SC 13G/A · Feb 13, 2024

2.2%

3.0M shares

Evolus, Inc.

SC 13G/A · Feb 13, 2024

9.3%

5.3M shares