SEC Filing Update: #ZSTK : $1.65

Sector: Healthcare | YTD: 🔽 -75.45% The SEC disclosed Today (21-JUL-2026) that Heinrich Michael has INCREASED #ZSTK Shares by 1,084.14% 🟢 * Previous Holdings: 471.21K Shares * Current Holdings: 5.58M Shares * Increase+5.11M * Increased(%)+1084.14% * Ownership: 30.2% * Estimated Investment Value: $10.42M https://www.thinksabio.com/reports/isr/ZSTK Institutional ownership in #ZSTK has been steadily rising over the past 2 quarters in Shares: Q4 2025: 1.29K Q1 2026: 64.30K