WALTERS GROUP - 31 Dec 2025 Form 4 Insider Report for Zentalis Pharmaceuticals, Inc. (ZNTL)

Role: 10%+ Owner
Signature: /s/ The Walters Group, By: /s/ Susan B. Walters, Name: Susan B. Walters, Title: General Partner
Issuer symbol: ZNTL
Transactions as of: 31 Dec 2025
Net transactions value: +$7,751,968
Form type: 4
Filing time: 08 Jan 2026, 16:57:05 UTC
Previous filing: 08 Jan 2026
SEC: View on sec.gov

Reporting Owners (3)

Name	Relationship	Address	Signature	Signature date	CIK
WALTERS GROUP	10%+ Owner	8975 S. PECOS ROAD, UNIT 6A, HENDERSON	/s/ The Walters Group, By: /s/ Susan B. Walters, Name: Susan B. Walters, Title: General Partner	08 Jan 2026	0001177523
WALTERS WILLIAM THURMAN	10%+ Owner	8975 S. PECOS ROAD, UNIT 6A, HENDERSON	/s/ William T. Walters	08 Jan 2026	0001689655
WALTERS SUSAN BERKLEY	10%+ Owner	8975 S. PECOS ROAD, UNIT 6A, HENDERSON	/s/ Susan B. Walters	08 Jan 2026	0001689761

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ZNTL	Common Stock	Purchase	$7,751,968	+6,459,973	+92%	$1.20	13,509,973	31 Dec 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.

Content

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.