Company profile
Zentalis Pharmaceuticals, Inc. Insider Trading
ZNTLEvery SEC Form 4 insider trading filing for Zentalis Pharmaceuticals, Inc. (ZNTL) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001725160
- Filings
- 67
- Insiders
- 23
- Last filing
- 2026-08-14
Activity summary
No insider transactions in the last 30 days. The most recent was on August 14, 2026, when WALTERS GROUP bought 4,335,000 shares. 67 filings from 23 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Zentalis Pharmaceuticals, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $15.2M.
90 day insight
Over the last 90 days, Zentalis Pharmaceuticals, Inc. insiders bought $15.2M across 1 transaction with no open-market sales.
- Most active insider: WALTERS GROUP with 1 transaction totaling $15.2M.
- Largest single purchase: $15.2M by WALTERS GROUP on Aug 14, 2026.
Activity skews bullish: buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
Showing 5 of 50 transactions. The most significant are picked first.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 14, 2026 | WALTERS GROUP | ZNTL | Purchase | 4,335,000 | $3.50 | $15.17M |
| Dec 31, 2025 | WALTERS GROUP | ZNTL | Purchase | 6,459,973 | $1.20 | $7.75M |
| Feb 6, 2025 | Ingmar Bruns | ZNTL | Purchase | 20,000 | $2.28 | $46K |
| Jan 31, 2025 | Jan Skvarka | ZNTL | Purchase | 60,000 | $1.72 | $103K |
| Jan 31, 2025 | Julia Marie Eastland | ZNTL | Purchase | 28,500 | $1.73 | $49K |
45 more transactions hidden
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By open-market value traded.
Institutional Ownership
Top 13F-HR holders of Zentalis Pharmaceuticals, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →