WALTERS GROUP - 14 Aug 2026 Form 4 Insider Report for Zentalis Pharmaceuticals, Inc. (ZNTL)

Reporting relationship: 10%+ Owner
Issuer ticker: ZNTL
Reported as of: 14 Aug 2026
Net transaction value: +$15,172,500
SEC form: 4
Accepted by SEC: 19 Aug 2026, 18:11:25 UTC
Prior SEC filing: 08 Jan 2026
Source filing: View source filing
Reporting owner signature: The Walters Group, By: Susan B. Walters, Name: Susan B. Walters, Title: General Partner

Key filing fact

WALTERS GROUP filed Form 4 for Zentalis Pharmaceuticals, Inc. (ZNTL) on 19 Aug 2026.

Key facts

This page summarizes WALTERS GROUP's Form 4 filing for Zentalis Pharmaceuticals, Inc. (ZNTL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 19 Aug 2026, 18:11.

Change

Previous filing in this sequence was filed on 08 Jan 2026.
Current net transaction value: +$15,172,500.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (3)

CIK 0001177523 Primary reporting owner

WALTERS GROUP

Relationship: 10%+ Owner
Address: 8975 S. PECOS ROAD, UNIT 6A, HENDERSON
Signature: The Walters Group, By: Susan B. Walters, Name: Susan B. Walters, Title: General Partner
Signature date: 19 Aug 2026

CIK 0001689655

WALTERS WILLIAM THURMAN

Relationship: 10%+ Owner
Address: 8975 S. PECOS ROAD, UNIT 6A, HENDERSON
Signature: William T. Walters
Signature date: 19 Aug 2026

CIK 0001689761

WALTERS SUSAN BERKLEY

Relationship: 10%+ Owner
Address: 8975 S. PECOS ROAD, UNIT 6A, HENDERSON
Signature: Susan B. Walters
Signature date: 19 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ZNTL transaction

Common Stock

Purchase

Transaction value: $15,172,500
Shares: +4,335,000
Change %: +32%
Price: $3.50
Shares after: 17,844,973
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F1

ZNTL transaction

Common Stock

Purchase

Transaction value: $15,172,500
Shares: +4,335,000
Change %: +32%
Price: $3.50
Shares after: 17,844,973
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F1

ZNTL transaction

Common Stock

Purchase

Transaction value: $15,172,500
Shares: +4,335,000
Change %: +32%
Price: $3.50
Shares after: 17,844,973
Date: 14 Aug 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The shares of common stock reported herein (the "Shares") are held directly by The Walters Group (the "TWG"). William T. Walters may be deemed to share voting and dispositive power with respect to the Shares. Susan B. Walters is the general partner and majority member of TWG and may be deemed to share voting and dispositive power with respect to the Shares. Each Reporting Person disclaims Section 16 beneficial ownership of the Shares reported herein except to the extent of its pecuniary interest therein, if any, and the inclusion of these Shares in this report shall not be deemed an admission of beneficial ownership of any of the reported Shares for purposes of Section 16 or any other purpose.