William A. Zartler - 15 Oct 2025 Form 4 Insider Report for Aris Water Solutions, Inc. (ARIS)

Reporting relationship: Founder and Executive Chairman, Director
Issuer ticker: ARIS
Reported as of: 15 Oct 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 Oct 2025, 21:07:38 UTC
Prior SEC filing: 09 Sep 2025
Next SEC filing: 03 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Robert W. Hunt Jr., as Attorney-in-Fact

Key filing fact

William A. Zartler filed Form 4 for Aris Water Solutions, Inc. (ARIS) on 15 Oct 2025.

Key facts

This page summarizes William A. Zartler's Form 4 filing for Aris Water Solutions, Inc. (ARIS).
8 reported transactions and 5 derivative rows are listed below.
Accepted by SEC: 15 Oct 2025, 21:07.

Change

Previous filing in this sequence was filed on 09 Sep 2025.
Current net transaction value: $0.

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 (1)

CIK 0001520378 Primary reporting owner

Zartler William A

Relationship: Founder and Executive Chairman, Director
Address: 9651 KATY FREEWAY, SUITE 400, HOUSTON
Signature: /s/ Robert W. Hunt Jr., as Attorney-in-Fact
Signature date: 15 Oct 2025

Reported non-derivative transactions

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

ARIS transaction

Class A Common Stock

Disposed to Issuer

Transaction value
Shares: -584,270
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: Direct
Footnotes: F1, F2, F3

ARIS transaction

Class B Common Stock

Disposed to Issuer

Transaction value
Shares: -488,474
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: Direct
Footnotes: F1, F2, F3

ARIS transaction

Class B Common Stock

Disposed to Issuer

Transaction value
Shares: -1,064,617
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: See Footnote
Footnotes: F1, F2, F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ARIS transaction Derivative

Aris Water Holdings, LLC Units

Disposed to Issuer

Transaction value
Shares: -488,474
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 488,474
Exercise price
Footnotes: F1, F2

ARIS transaction Derivative

Aris Water Holdings, LLC Units

Disposed to Issuer

Transaction value
Shares: -1,064,617
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: See Footnote
Underlying class: Class A Common Stock
Underlying amount: 1,064,617
Exercise price
Footnotes: F1, F2, F4

ARIS transaction Derivative

Performance-Based Restricted Stock Units

Disposed to Issuer

Transaction value
Shares: -139,473
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 139,473
Exercise price: $25.00
Footnotes: F5

ARIS transaction Derivative

Performance-Based Restricted Stock Units

Disposed to Issuer

Transaction value
Shares: -162,712
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 162,712
Exercise price: $25.00
Footnotes: F5

ARIS transaction Derivative

Performance-Based Restricted Stock Units

Disposed to Issuer

Transaction value
Shares: -56,497
Change %: -100%
Price
Shares after: 0
Date: 15 Oct 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 56,497
Exercise price: $25.00
Footnotes: F5

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

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

William A. Zartler is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 5 footnotes

Footnote F1

As of the effective time (the "Effective Time") of the transactions contemplated by the Agreement and Plan of Merger entered into on August 6, 2025, by and among the Issuer, Western Midstream Partners, LP ("Parent"), Arrakis OpCo Merger Sub LLC, Arrakis Holdings Inc., Arrakis Unit Merger Sub LLC, Arrakis Cash Merger Sub LLC and Aris Water Holdings, LLC ("Aris OpCo"), each issued and outstanding share of the Issuer's Class A common stock, par value $0.01 per share ("Issuer Class A Common Stock") and each Aris OpCo Unit and a corresponding share of Issuer Class B common stock, par value $0.01 per share ("Issuer Class B Common Stock"), held by the Reporting Person as of immediately prior to the Effective Time, was converted into the right to receive, pursuant to an election made by the Reporting Person, one of the following forms of consideration:

Footnote F2

cont'd from Footnote 1: (i) $7.00 in cash (without interest) and 0.450 common units representing limited partnership interests in Parent ("Parent Common Units"); (ii) $25.00 in cash (without interest); (iii) 0.625 Parent Common Units ("Common Unit Election Consideration"), or (iv) in the event of the Reporting Person's failure to timely deliver an election, the Common Unit Election Consideration.

Footnote F3

This amount includes 202,837 shares of Issuer Class A Common Stock subject to awards of time-vesting restricted stock units ("Issuer RSU Awards") held by the Reporting Person. At the Effective Time, each Issuer RSU Award was converted into the right to receive an amount in cash equal to (i) the total number of shares of Issuer Class A Common Stock subject to such Issuer RSU Award, multiplied by (ii) $25.00, plus an additional amount in cash equal to any accrued but unpaid cash-based dividend equivalents.

Footnote F4

Represents securities held by Solaris Energy Capital, LLC ("Solaris Energy Capital"). The Reporting Person is the sole member of Solaris Energy Capital and has the authority to vote or dispose of the securities held through Solaris Energy Capital in his sole discretion. As a result, the Reporting Person may be deemed to beneficially own all of the securities owned by Solaris Energy Capital. The Reporting Person disclaims beneficial ownership of the shares held by Solaris Energy Capital in excess of his pecuniary interest therein.

Footnote F5

At the Effective Time, each outstanding award of performance-vesting restricted stock units ("Issuer PSU Awards") held by the Reporting Person was converted into the right to receive an amount in cash equal to (i) the total number of shares of Issuer Class A Common Stock subject to such Aris PSU Award (assuming that any performance-based vesting conditions applicable to such Issuer PSU Award were achieved at the greater of (x) the target level of performance and (y) the greater of the actual level of performance through (1) August 13, 2025, and (2) the Effective Time), multiplied by (ii) $25.00, plus an additional amount in cash equal to any accrued but unpaid dividend equivalents.