Zentalis Pharmaceuticals, Inc. (ZNTL) — real insider trading activity disclosed to the SEC, tracked automatically as new Form 4 filings are reported. Most recent: WALTERS GROUP disclosed a transaction on 2026-08-14 worth $15,172,500.
Transactions disclosed by company insiders to the SEC on Form 4, most recent first.
| Insider | Role | Date | Shares | Value |
|---|---|---|---|---|
| WALTERS GROUP | Insider | 2026-08-14 | 4,335,000 | $15,172,500 |
Position changes disclosed in SEC Form 13F filings. These report a quarterly snapshot, not exact trade dates.
| Fund | Change | Quarter |
|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | RENAISSANCE TECHNOLOGIES LLC increased this position by 72% ($4,535,259 -> $7,804,028). | 2026-06-30 |
| 5AM Venture Management, LLC | 5AM Venture Management, LLC increased this position by 107% ($9,238,116 -> $19,147,378). | 2026-06-30 |
| VANGUARD CAPITAL MANAGEMENT LLC | VANGUARD CAPITAL MANAGEMENT LLC increased this position by 154% ($5,407,054 -> $13,752,995). | 2026-06-30 |
| TWO SIGMA INVESTMENTS, LP | TWO SIGMA INVESTMENTS, LP increased this position by 112% ($6,918,271 -> $14,670,940). | 2026-06-30 |
| ORBIMED ADVISORS LLC | ORBIMED ADVISORS LLC opened a new position worth $6,744,294. | 2026-06-30 |
| CITADEL ADVISORS LLC | CITADEL ADVISORS LLC increased this position by 163% ($4,053,074 -> $10,666,687). | 2026-06-30 |
| Soleus Capital Management, L.P. | Soleus Capital Management, L.P. opened a new position worth $4,607,500. | 2026-06-30 |
| GEODE CAPITAL MANAGEMENT, LLC | GEODE CAPITAL MANAGEMENT, LLC increased this position by 349% ($1,181,770 -> $5,306,560). | 2026-06-30 |
Largest reported positions as of 2026-06-30.
| Fund | Value | Shares |
|---|---|---|
| 5AM Venture Management, LLC | $19,147,378 | 3,947,913 |
| TWO SIGMA INVESTMENTS, LP | $14,670,940 | 3,024,936 |
| VANGUARD CAPITAL MANAGEMENT LLC | $13,752,995 | 2,835,669 |
| CITADEL ADVISORS LLC | $10,666,687 | 2,199,317 |
| RENAISSANCE TECHNOLOGIES LLC | $7,804,028 | 1,609,078 |
| Opaleye Management Inc. | $6,851,382 | 1,412,656 |
| ORBIMED ADVISORS LLC | $6,744,294 | 1,390,576 |
| Decheng Capital LLC | $6,418,136 | 1,323,327 |
| GEODE CAPITAL MANAGEMENT, LLC | $5,306,560 | 1,093,779 |
| Ishara Investments LP | $4,971,250 | 1,025,000 |
Data compiled from public SEC filings. This is informational reporting, not investment advice.
A Form 4 filing with the Securities and Exchange Commission shows that Walters Group, a 10%+ owner of Zentalis Pharmaceuticals, Inc. (NASDAQ: ZNTL), purchased 4,335,000 shares of the company’s common stock on August 14, 2026. The transaction was an open-market purchase, meaning the insider used its own capital to acquire the shares rather than receiving … Read more