Jack Yongfeng Zhang 2

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

Total Filings

1

Stocks Covered

1

Latest Filing

Feb 9, 2024

Filings

AMPH

AMPHASTAR PHARMACEUTICALS, INC.

SC 13G/A · Feb 9, 2024

26.2%

13.4M shares