# EDGAR Filing Document

**Accession Number:** 0001693256
**File Stem:** 0001104659-26-017579
**Filing Date:** 2026-2
**Character Count:** 191413
**Document Hash:** 033574224eff6ba4f8016b7a26b351fe
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-017579.hdr.sgml**: 20260219

**ACCESSION NUMBER**: 0001104659-26-017579

**CONFORMED SUBMISSION TYPE**: 424B5

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260219

**DATE AS OF CHANGE**: 20260219

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Select Water Solutions, Inc.
- **CENTRAL INDEX KEY:** 0001693256
- **STANDARD INDUSTRIAL CLASSIFICATION:** OIL, GAS FIELD SERVICES, NBC [1389]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 814561945
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 424B5
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-293586
- **FILM NUMBER:** 26655071

**BUSINESS ADDRESS:**
- **STREET 1:** 1820 NORTH I-35
- **CITY:** GAINESVILLE
- **STATE:** TX
- **ZIP:** 76240
- **BUSINESS PHONE:** (940) 668-1818

**MAIL ADDRESS:**
- **STREET 1:** 1820 NORTH I-35
- **CITY:** GAINESVILLE
- **STATE:** TX
- **ZIP:** 76240

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Select Energy Services, Inc.
- **DATE OF NAME CHANGE:** 20161227

[**TABLE OF CONTENTS**](#TOC)

This preliminary prospectus supplement relates to an effective registration statement filed with the U.S. Securities and Exchange Commission but is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell the securities described herein and are not soliciting an offer to buy such securities, in any state or jurisdiction where such offer or sale is not permitted.

#### Filed Pursuant to Rule 424(b)(5)

#### Registration No. 333-293586

#### S UBJECT TO COMPLETION, DATED F EBRUARY 19, 2026

#### P RELIMINARY PROSPECTUS SUPPLEMENT (To Prospectus dated February 19, 2026)

### $175,000,000
![[MISSING IMAGE: lg_select-pn.jpg]](lg_select-pn.jpg)

### Select Water Solutions, Inc. Class A Common Stock
We are offering $175,000,000 of shares of our Class A common stock, par value $0.01 per share ("Class A common stock") in this offering.

Unless otherwise stated or the context otherwise indicates, all references to "we," "us," "our," and the "Company" or similar expressions refer to Select Water Solutions, Inc. and its subsidiaries.

Our Class A common stock is listed on both the New York Stock Exchange and the NYSE Texas, Inc. under the symbol "WTTR." The last reported sales price of our Class A common stock on each of the New York Stock Exchange and on the NYSE Texas, Inc. on February 17, 2026 was $13.26 per share.

#### Investing in our Class A common stock involves risks. See "Risk Factors" on page S-9 .

---

| | | |
|:---|:---|:---|
| | **Per Share**  | **Total**  |
| Price to Public |  | $— |
| Underwriting Discounts and Commissions(1) |  | $— |
| Proceeds to Select Water Solutions, Inc.(2) |  | $— |

---

(1) We refer you to "Underwriting" beginning on page [S-23](#sUND) of this prospectus supplement for additional information regarding underwriting compensation.

(2) Before expenses.

We have granted the underwriters the option to purchase up to an additional $26,250,000 of shares of Class A common stock on the same terms and conditions set forth above within 30 days from the date of this prospectus.

Delivery of the shares of Class A common stock will be made on or about , 2026.

 **Neither the U.S. Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.** 

 *Lead Book-Running Managers* 

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| | |
|:---|:---|
| **J.P. Morgan** | **BofA Securities**  |

---

The date of this prospectus supplement is , 2026.

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[**TABLE OF CONTENTS**](#TOC)

### T ABLE OF CONTENTS

### P ROSPECTUS SUPPLEMENT

---

| | |
|:---|:---|
|  | **Page**  |
| [ABOUT THIS PROSPECTUS SUPPLEMENT](#sATPS)  | [S-ii](#sATPS) |
| [TRADEMARKS AND TRADE NAMES](#sTATN)  | [S-ii](#sTATN) |
| [CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS](#sCSRF)  | [S-ii](#sCSRF) |
| [SUMMARY](#sSUM)  | [S-1](#sSUM) |
| [THE OFFERING](#sTHOF)  | [S-3](#sTHOF) |
| [SUMMARY HISTORICAL CONSOLIDATED FINANCIAL DATA](#sSHFD)  | [S-6](#sSHFD) |
| [RISK FACTORS](#sRIFA)  | [S-9](#sRIFA) |
| [USE OF PROCEEDS](#sUOP)  | [S-14](#sUOP) |
| [DIVIDEND POLICY](#sDIPO)  | [S-15](#sDIPO) |
| [CAPITALIZATION](#sCAP)  | [S-16](#sCAP) |
| [CERTAIN ERISA CONSIDERATIONS](#sCEC)  | [S-17](#sCEC) |
| [MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON-U.S. HOLDERS](#sMUFI)  | [S-19](#sMUFI) |
| [UNDERWRITING](#sUND)  | [S-23](#sUND) |
| [LEGAL MATTERS](#sLEMA)  | [S-30](#sLEMA) |
| [EXPERTS](#sEXP)  | [S-30](#sEXP) |
| [WHERE YOU CAN FIND MORE INFORMATION](#sWYCF)  | [S-30](#sWYCF) |
| [INCORPORATION OF CERTAIN INFORMATION BY REFERENCE](#sIOCI)  | [S-30](#sIOCI) |

---

### B ASE PROSPECTUS

---

| | |
|:---|:---|
|  | **Page**  |
| [ABOUT THIS PROSPECTUS](#tATP)  | [1](#tATP) |
| [CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS](#tCSRF)  | [2](#tCSRF) |
| [RISK FACTORS](#tRIFA)  | [4](#tRIFA) |
| [WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE](#tWYCF)  | [5](#tWYCF) |
| [THE COMPANY](#tTHCO)  | [7](#tTHCO) |
| [USE OF PROCEEDS](#tUOP)  | [8](#tUOP) |
| [DESCRIPTION OF CAPITAL STOCK](#tDOCS)  | [9](#tDOCS) |
| [DESCRIPTION OF DEPOSITARY SHARES](#tDODS)  | [13](#tDODS) |
| [DESCRIPTION OF WARRANTS](#tDOW)  | [14](#tDOW) |
| [PLAN OF DISTRIBUTION](#tPOD)  | [15](#tPOD) |
| [CERTAIN ERISA CONSIDERATIONS](#tCEC)  | [17](#tCEC) |
| [LEGAL MATTERS](#tLEMA)  | [19](#tLEMA) |
| [EXPERTS](#tEXP)  | [19](#tEXP) |

---

S-i

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[**TABLE OF CONTENTS**](#TOC)

### A BOUT THIS PROSPECTUS SUPPLEMENT
This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering. The second part contains an accompanying primary base prospectus relating to sales of shares of Class A common stock and other securities by Select Water Solutions, Inc. and gives more general information, some of which may not apply to this offering. Generally, when we refer to the prospectus, we are referring to this prospectus supplement and the accompanying base prospectus combined. Unless otherwise indicated, capitalized terms used but not defined herein have the meaning assigned to them in the registration statement of which this prospectus supplement forms a part. You should read the entire prospectus supplement, as well as the accompanying base prospectus and the documents incorporated by reference that are described under "Incorporation of Certain Information by Reference" in this prospectus supplement. To the extent that any statement we make in this prospectus supplement is inconsistent with statements made in the accompanying base prospectus or any documents incorporated by reference herein, you should rely on the information contained in this prospectus supplement, which will be deemed to modify or supersede those made in the accompanying base prospectus or documents incorporated by reference herein or therein.

You should rely only on the information included or incorporated by reference in this prospectus supplement and the accompanying base prospectus prepared by us or on behalf of us or to which we have referred you. Neither we, the underwriters nor any of our or their representatives have authorized any other person to provide you with information different from that included or incorporated by reference in this prospectus supplement and the accompanying base prospectus. If anyone provides you with different or inconsistent information, you should not rely on it. Neither we nor the underwriters are making an offer to sell these securities in any jurisdiction where an offer or sale is not permitted. The information in this prospectus supplement, and the information in the accompanying base prospectus or contained in any document incorporated by reference is accurate only as of the date of such prospectus or document incorporated by reference, regardless of the time of delivery of this prospectus supplement or any sale of our Class A common stock. Our business, financial condition, results of operations and prospects may have changed since that date.

This prospectus contains forward-looking statements that are subject to a number of risks and uncertainties, many of which are beyond our control. Please read the sections entitled "Risk Factors" and "Cautionary Statement Regarding Forward-Looking Statements."

### T RADEMARKS AND TRADE NAMES
We own or have rights to various trademarks, service marks and trade names that we use in connection with the operation of our business. This prospectus may also contain trademarks, service marks and trade names of third parties, which are the property of their respective owners. Our use or display of third parties' trademarks, service marks, trade names or products in this prospectus is not intended to and does not imply a relationship with us or an endorsement or sponsorship by or of us. Solely for convenience, the trademarks, service marks and trade names referred to in this prospectus may appear without the <sup>®</sup>,™ or <sup>SM</sup> symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights or the right of the applicable licensor to these trademarks, service marks and trade names.

### C AUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
The information in this prospectus and the documents incorporated by reference herein includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). All statements, other than statements of historical fact, included in this prospectus regarding our strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management are forward-looking statements. When used in this prospectus, the words "could," "believe," "anticipate," "intend," "estimate," "expect," "project," "preliminary," "forecast," and similar expressions or variations are intended to identify forward-looking statements, although not all forward-looking statements contain such

S-ii

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identifying words. These forward-looking statements are based on our current expectations and assumptions about future events and are based on currently available information as to the outcome and timing of future events. When considering forward-looking statements, you should keep in mind the risk factors and other cautionary statements described under the heading "Risk Factors" included in our Annual Report on Form 10-K for the year ended December 31, 2025, as well as those set forth from time to time in our other filings with the Securities and Exchange Commission (the "SEC"). These forward-looking statements are based on management's current belief, based on currently available information, as to the outcome and timing of future events.

Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to, those summarized below:

• global economic distress, including that resulting from the sustained Russia-Ukraine war and related economic sanctions, instability and continued hostilities in the Middle East, including increased tensions with Iran, instability and potential conflict with Venezuela, economic uncertainty as a result of changing trade policies, inflation and high interest rates, each of which may decrease demand for oil and natural gas or contribute to volatility in the prices for oil and natural gas, which may decrease demand for our services;

• actions taken by the members of the Organization of the Petroleum Exporting Countries ("OPEC") and Russia (together with OPEC and other allied producing countries, "OPEC+") with respect to oil production levels and announcements of potential changes in such levels, including the ability of the OPEC+ countries to agree on and comply with announced supply limitations, which may be exacerbated by increased hostilities in the Middle East, heightened tensions with Iran and the resumption of previously sanctioned oil from Venezuela;

• impacts related to changing United States ("U.S.") and foreign trade policies, including increased trade restrictions or tariffs, the impact of changes in diplomatic and trade relations, and the results of countermeasures and any tariff mitigation initiatives;

• changes in global political or economic conditions, generally, and in the markets we serve, including the rate of inflation and potential economic recession;

• changes in safety, health, environmental and other governmental policy and regulation;

• the enactment or promulgation of new laws or regulations or changes or modifications in existing laws, regulations, rules or governmental policies with respect to taxation;

• the level of capital spending and access to capital markets by oil and gas companies in response to changes in commodity prices or reduced demand;

• the impact of central bank policy actions and disruptions in the bank and capital markets;

• the potential deterioration of our customers' financial condition, including defaults resulting from actual or potential insolvencies;

• the degree to which consolidation among our customers may affect spending on U.S. drilling and completions, including the recent consolidation in the Permian Basin;

• trends and volatility in oil and gas prices, and our ability to manage through such volatility;

• the impact of current and future laws, rulings, governmental regulations and policies, including those related to accessing water, disposing of wastewater, transferring produced water, interstate freshwater and produced water transfer, chemicals, carbon pricing, pipeline construction, emissions, hydraulic fracturing, leasing, permitting or drilling on federal lands and various other environmental matters;

• the ability to source certain raw materials and other critical components or manufactured products globally on a timely basis from economically advantaged sources, including any delays and/or supply chain disruptions;

• regional impacts to our business, including our key infrastructure assets within the Permian Basin, the Bakken, and the Haynesville regions;

S-iii

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• capacity constraints on regional oil, natural gas and water gathering, processing and pipeline systems that result in a slowdown or delay in drilling and completion activity, and thus a decrease in the demand for our services in our core markets;

• the impact of regulatory and related policy actions by federal, state and/or local governments, such as the Inflation Reduction Act of 2022 ("IRA 2022"), which may negatively impact the future production of oil and gas in the U.S., thereby reducing demand for our services;

• our ability to hire and retain key management and employees, including skilled labor;

• our access to capital to fund expansions, acquisitions and our working capital needs and our ability to obtain debt or equity financing on satisfactory terms, or at all;

• our health, safety and environmental performance;

• the impact of competition on our operations;

• the degree to which our Exploration and Production ("E&P") customers may elect to operate their water-management services in-house rather than source these services from companies like us;

• our level of indebtedness and our ability to comply with covenants contained in our Sustainability-Linked Credit Facility (as defined herein) or future debt instruments;

• delays or restrictions in obtaining permits by us or our customers;

• constraints in supply or availability of equipment used in our business;

• the impact of advances or changes in well-completion technologies or practices that result in reduced demand for our services, either on a volumetric or time basis;

• acts of terrorism, war or political or civil unrest in the U.S. or elsewhere, such as the Russia-Ukraine war, the instability and hostilities in the Middle East, including heightened tensions with Iran and any potential conflict with Venezuela;

• information technology failures or cyberattacks; and

• accidents, weather, natural disasters or other events affecting our business.

Whether actual results and developments will conform with our expectations and predictions contained in forward-looking statements is subject to a number of risks and uncertainties which could cause actual results to differ materially from such expectations and predictions, including, without limitation, in addition to those specified in the text surrounding such statements, the risks described under "Risk Factors" in this prospectus and those described in our Annual Report on Form 10-K for the year ended December 31, 2025 (the "Form 10-K"), filed with U.S. Securities and Exchange Commission (the "SEC") and in our subsequent filings with the SEC, and any other risks, many of which are beyond our control.

Readers are cautioned not to place undue reliance on our forward-looking statements, which are made as of the date of this prospectus. We do not undertake, and expressly disclaim, any duty to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by applicable securities laws. Investors are also advised to carefully review and consider the various risks and other disclosures discussed in our SEC reports, including the risk factors described in the Form 10-K.

S-iv

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### S UMMARY
 *This summary contains basic information about us and the offering. Because it is a summary, it does not contain all the information that you should consider before investing in our Class A common stock. You should read and carefully consider this entire prospectus and the documents incorporated by reference herein and therein before making an investment decision, especially the information presented under the heading "Risk Factors," "Cautionary Statement Regarding Forward-Looking Statements" and our consolidated financial statements and the accompanying notes incorporated by reference herein.* 

 *Unless otherwise stated or the context otherwise indicates, all references in this prospectus to the "Company," "Select," "we," "us" and "our" refer to Select Water Solutions, Inc. and its consolidated subsidiaries. Except as otherwise indicated, all information contained in this prospectus assumes that the underwriters do not exercise their option to purchase additional shares.* 

#### O ur Company
We are a leading provider of sustainable water-management solutions to the energy industry in the U.S. As a leader in the water management industry, we place the utmost importance on safe, environmentally responsible management of water throughout the lifecycle of a well. Additionally, we believe that responsibly managing water resources through our operations to help conserve and protect the environment in the communities in which we operate is paramount to our continued success. The Company is a holding company whose sole material asset consists of common units ("SES Holdings LLC Units") in SES Holdings, LLC ("SES Holdings").

With a diverse geographic footprint across the U.S., we operate through three primary segments: Water Infrastructure, Water Services and Chemical Technologies.

• **Water Infrastructure**: Our Water Infrastructure segment develops, builds, and operates permanent infrastructure solutions to support full life cycle water management and waste treatment solutions. These solutions support both new oil and gas well development and ongoing production activity throughout the life of existing wells. Select's infrastructure assets include permanent pipeline infrastructure, fixed and mobile treatment and recycling facilities, water storage facilities, saltwater disposal wells ("SWDs") and landfill facilities. Our Water Infrastructure operations and ongoing capital investments are underpinned by a growing portfolio of long-term contractual agreements, and accompanying customer commitments, that encompass the management of produced water over the entire production life of a well. These agreements, often more than a decade in duration, encompass a number of different types of contract structures, including acreage dedications, wellbore dedications, minimum volume commitments ("MVCs"), areas of mutual interest ("AMIs") and right of first refusals ("ROFRs"). Additionally, we also structure supplemental interruptible commercial agreements that monetize spare capacity from nearby operators across our infrastructure networks.

• **Water Services**: Our Water Services segment provides the complex services needed to support new well completions as well as ongoing production over the life of the well, including water transfer, water sourcing, water containment, fluids hauling, water monitoring and water network automation. Separately, through our Peak Rentals subsidiary, we offer mobile power solutions, including generator and battery storage solutions, other various on-site rental equipment and accommodation offerings, as well as flowback and well testing solutions. Through our patented AquaView<sup>®</sup> automation services and our proprietary software platform, our Water Services segment provides extensive technology solutions that enable 24/7 monitoring and visibility for our customers into all of their water-related operations, including hydrographic mapping, water volume and quality monitoring, remote pit and tank monitoring, leak detection, asset and fuel tracking and automated-equipment services.

• **Chemical Technologies**: Our Chemical Technologies segment develops, manufactures, manages logistics and provides a full suite of chemicals used in hydraulic fracturing, stimulation, cementing and well completions. Our completion chemicals are sold primarily to leading integrated and independent E&P companies and pressure-pumping service companies in the U.S. to support well stimulation and completion. We also provide customized water treatment and flow assurance solutions across the completion and production lifecycle. Additionally,

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through our FluidMatch™ solutions, we provide comprehensive testing and analysis of our customers' application conditions, product chemistry and key performance requirements for oil and gas well completion fluid-system design. This process may include water profiling, application and fluid assessment, treatment assessment, product selection, optimization and customization.

#### P rincipal Executive Offices and Internet Address
Our principal executive offices are located at 1820 North I-35, Gainesville, TX 76240, and our telephone number is (940) 668-1818. Our website address is *www.selectwater.com*. Our periodic reports and other information filed with or furnished to the SEC are available, free of charge, through our website, as soon as reasonably practicable after those reports and other information are electronically filed with or furnished to the SEC. Information on our website or any other website is not incorporated by reference into this prospectus and does not constitute a part of this prospectus.

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### T HE OFFERING
Issuer

Select Water Solutions, Inc.

Class A Common stock offered by us

$175,000,000 of shares of Class A common stock ($201,250,000 shares of Class A common stock if the underwriters' option to purchase additional shares is exercised in full).

Class A Common Stock outstanding prior to this offering

105,140,543 shares of Class A common stock.

Class B Common Stock outstanding prior to this offering

16,221,101 shares of Class B common stock.

SES Holdings LLC Units outstanding prior to this offering

121,361,644 SES Holdings LLC Units.

Class A Common stock to be outstanding immediately after completion of this offering

shares of Class A common stock (shares of Class A common stock if the underwriters' option to purchase additional shares is exercised in full).

Class B Common stock to be outstanding immediately after completion of this offering

16,221,101 shares of Class B common stock, representing % of the combined voting power of our common stock (or 16,221,101 shares, representing approximately % of the combined voting power of all of our combined common stock if the underwriters exercise their option to purchase additional shares of Class A common stock in full) and no economic interest in Select Water Solutions, Inc.

SES Holdings LLC Units to be held by us immediately after completion of this offering

SES Holdings LLC Units, representing approximately % of the economic interests of SES Holdings LLC (or SES Holdings LLC Units, representing approximately % of the economic interests of SES Holdings LLC if the underwriters exercise in full their option to purchase additional shares of Class A common stock). Upon the issuance of Class A common stock in this offering, SES Holdings LLC will concurrently issue an equivalent number of SES Holdings LLC Units to Select Water Solutions, Inc.

Voting rights

Each share of our Class A common stock and Class B common stock entitles its holder to one vote on all matters to be voted on by stockholders generally. Holders of shares of our Class A common stock and Class B common stock vote together as a single class on all matters presented to our stockholders for their vote or approval, except as required by law. See the section entitled "Description of Capital Stock" in the accompanying base prospectus.

Redemption rights of holders of SES Holdings LLC Units

The holders of SES Holdings LLC Units (other than Select Water Solutions, Inc.) may, at their option, require SES

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Holdings LLC to redeem all of a portion of their SES Holdings LLC Units (subject to certain limitations) together with the transfer and surrender of the same number of shares of Class B common stock) for an equivalent number of shares of Class A common stock or, at the election of SES Holdings LLC, cash upon the terms and subject to the conditions set forth in the SES Holdings LLC limited liability company agreement.

Use of proceeds

We estimate that after deducting underwriting discounts and commissions and estimated offering expenses payable by us, we will receive approximately $ million of net proceeds from the sale of our Class A common stock in this offering. We intend to use the net proceeds that we receive from this offering to purchase SES Holdings LLC Units (or SES Holdings LLC Units if the underwriters exercise in full their option to purchase additional shares of Class A common stock) from SES Holdings LLC at a price per SES Holdings LLC Unit equal to the per share price of Class A common stock in this offering, less the underwriting discounts and commissions.

We intend to cause SES Holdings LLC to use the net proceeds it receives from us in connection with this offering for general corporate purposes, including water infrastructure growth capital projects, potential acquisitions or debt repayment under our sustainability-linked credit facility. If the underwriters exercise their option to purchase additional shares of Class A common stock, we will use the additional net proceeds to purchase additional SES Holdings LLC Units from SES Holdings LLC to maintain the one- to-one ratio between the number of shares of Class A common stock issued by us and the number of SES Holdings LLC Units. See "Use of Proceeds."

Dividend policy

Since the fourth quarter of 2022, we have paid a quarterly cash dividend on our shares of Class A common stock and SES Holdings LLC Units (along with shares of our Class B common stock). The Company most recently announced a quarterly dividend of $0.07 per share on January 22, 2026 to be paid on February 18, 2026 to holders of record as of the close of business on February 6, 2026. Our future dividend policy is within the discretion of our board of directors, and all future dividend payments are subject to quarterly review and approval by our board of directors, and will depend upon then-existing conditions, including our results of operations and financial condition, capital requirements, business prospects, statutory and contractual restrictions on our ability to pay dividends, including restrictions contained in our debt agreements and other factors our board of directors may deem relevant.. Please see "Dividend Policy."

Trading symbol

Our Class A common stock is listed on the NYSE and the NYSE Texas under the symbol "WTTR."

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Risk Factors

You should carefully read and consider the information set forth under the heading "Risk Factors" beginning on page 8 and all other information set forth in this prospectus before deciding to invest in our Class A common stock.

The information above does not include 13,394,893 shares of Class A common stock reserved for issuance pursuant to our long-term incentive plan or 856,092 shares of Class A common stock issuable upon exercise of outstanding stock options, each as of February 16, 2026.

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### S UMMARY HISTORICAL CONSOLIDATED FINANCIAL DATA
The following table sets forth our summary historical financial data as of December 31, 2025, 2024 and 2023 and for the years ended December 31, 2025, 2024 and 2023.

The summary financial data presented below are qualified in their entirety by reference to, and should be read in conjunction with, "Capitalization", "Management's Discussion and Analysis of Financial Condition and Results of Operations", included or incorporated by reference elsewhere in this prospectus, and the historical financial statements and related notes incorporated by reference in this prospectus. Future results may vary significantly from the results reflected because of various factors, including those discussed under "Risk Factors."

#### C onsolidated Statement of Operations

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| | | | |
|:---|:---|:---|:---|
| | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)**  | **2025**  | **2024**  | **2023**  |
| Revenue |  |  |  |
| &nbsp;&nbsp;&nbsp; Water Infrastructure  | $313239 | $290900 | $229970 |
| &nbsp;&nbsp;&nbsp; Water Services  | 786525 | 901657 | 1032896 |
| &nbsp;&nbsp;&nbsp; Chemical Technologies  | 307580 | 259518 | 322487 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total revenue  | 1407344 | 1452075 | 1585353 |
| Costs of revenue |  |  |  |
| &nbsp;&nbsp;&nbsp; Water Infrastructure  | 143940 | 137573 | 138191 |
| &nbsp;&nbsp;&nbsp; Water Services  | 635225 | 720876 | 814609 |
| &nbsp;&nbsp;&nbsp; Chemical Technologies  | 251284 | 220617 | 262078 |
| &nbsp;&nbsp;&nbsp; Depreciation, amortization and accretion  | 174497 | 153543 | 138813 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total costs of revenue  | 1204946 | 1232609 | 1353691 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Gross profit  | 202398 | 219466 | 231662 |
| Operating expenses |  |  |  |
| &nbsp;&nbsp;&nbsp; Selling, general and administrative  | 161316 | 159978 | 155548 |
| &nbsp;&nbsp;&nbsp; Depreciation and amortization  | 5321 | 3404 | 2276 |
| &nbsp;&nbsp;&nbsp; Impairments and abandonments  | 6221 | 1237 | 12607 |
| &nbsp;&nbsp;&nbsp; Lease abandonment costs  | 734 | 358 | 42 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total operating expenses  | 173592 | 164977 | 170473 |
| Income from operations  | 28806 | 54489 | 61189 |
| Other income (expense) |  |  |  |
| &nbsp;&nbsp;&nbsp; Gain (loss) on sales of property and equipment and divestitures, <br> net  | 10338 | 3255 | (210) |
| &nbsp;&nbsp;&nbsp; Interest expense, net  | (23181) | (6965) | (4393) |
| &nbsp;&nbsp;&nbsp; Remeasurement gain on business combination  | 14924 |  |  |
| &nbsp;&nbsp;&nbsp; Tax receivable agreements expense  | (4995) | (836) | (38187) |
| &nbsp;&nbsp;&nbsp; Other  | (1141) | (573) | 2424 |
|  Income before income tax benefit (expense) and equity in losses of <br> unconsolidated entities  | 24751 | 49370 | 20823 |
| &nbsp;&nbsp;&nbsp; Income tax benefit (expense)  | 1608 | (13568) | 60196 |
| &nbsp;&nbsp;&nbsp; Equity in losses of unconsolidated entities  | (4892) | (352) | (1800) |
| Net income  | 21467 | 35450 | 79219 |
| Less: net income attributable to noncontrolling interests  | (244) | (4806) | (4816) |
| Net income attributable to Select Water Solutions, Inc.  | $21223 | $30644 | $74403 |

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#### C onsolidated Balance Sheet Data

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| | | |
|:---|:---|:---|
| | **As of December 31,**  | **As of December 31,**  |
| **(In thousands)**  | **2025**  | **2024**  |
| Total assets  | $1595612 | $1366282 |
| Total liabilities  | 668545 | 450748 |
| Total equity  | 927067 | 915534 |

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#### C onsolidated Statements of Cash Flows

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| | | | |
|:---|:---|:---|:---|
| | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)**  | **2025**  | **2024**  | **2023**  |
| Net cash provided by operating activities  | 214673 | 234886 | 285355 |
| Net cash used in investing activities  | (404962) | (318623) | (137168) |
| Net cash provided by (used in) financing activities  | 188389 | 46641 | (98423) |

---

#### N on- GAAP Financial Measures
EBITDA, Adjusted EBITDA and Free Cash Flow ("FCF") are not financial measures presented in accordance with GAAP. We define EBITDA as net income, plus interest expense, income taxes, and depreciation, amortization and accretion. We define Adjusted EBITDA as EBITDA plus any impairment and abandonment charges or asset write offs pursuant to U.S. Generally Accepted Accounting Principles ("GAAP"), plus non-cash losses on the sale of assets or subsidiaries less remeasurement gains on fixed assets related to business combinations, non-cash compensation expense, and non-recurring or unusual expenses or charges, including severance expenses, transaction costs, or facilities related exit and disposal related expenditures, plus/(minus) foreign currency losses/(gains), plus losses on unconsolidated entities and plus tax receivable agreements ("TRA") expense. We define FCF as net cash provided by operating activities less purchases of property and equipment, plus proceeds received from sale of property and equipment.

Our board of directors, management and investors use EBITDA and Adjusted EBITDA to assess our financial performance because it allows them to compare our operating performance on a consistent basis across periods by removing the effects of our capital structure (such as varying levels of interest expense), asset base (such as depreciation, amortization and accretion) and items outside the control of our management team. We present EBITDA and Adjusted EBITDA because we believe they provide useful information regarding the factors and trends affecting our business in addition to measures calculated under GAAP. Our board of directors and executive management team use FCF to assess our liquidity and ability to repay maturing debt, fund operations and make additional investments. We believe FCF provides useful information to investors because it is an important indicator of our liquidity including our ability to reduce net debt, make strategic investments, pay dividends and distributions and repurchase common stock.

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The following table presents a reconciliation of net income to EBITDA and Adjusted EBITDA for each of the periods indicated.

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| | | |
|:---|:---|:---|
| | **Year Ended December 31,**  | **Year Ended December 31,**  |
| | **2025**  | **2024**  |
|  | **(In thousands)**  | **(In thousands)**  |
| Net income  | $21467 | $35450 |
| &nbsp;&nbsp;&nbsp; Interest expense, net  | 23181 | 6965 |
| &nbsp;&nbsp;&nbsp; Income tax (benefit) expense  | (1608) | 13568 |
| &nbsp;&nbsp;&nbsp; Depreciation, amortization and accretion  | 179818 | 156947 |
| EBITDA  | 222858 | 212930 |
| &nbsp;&nbsp;&nbsp; Tax receivable agreements expense  | 4995 | 836 |
| &nbsp;&nbsp;&nbsp; Non-cash compensation expenses  | 19875 | 26358 |
| &nbsp;&nbsp;&nbsp; Non-recurring severance expenses(1)  | 1467 | 648 |
| &nbsp;&nbsp;&nbsp; Non-cash loss on sale of assets or subsidiaries  | 1399 | 3609 |
| &nbsp;&nbsp;&nbsp; Transaction and rebranding costs  | 10269 | 10038 |
| &nbsp;&nbsp;&nbsp; Lease abandonment costs  | 734 | 358 |
| &nbsp;&nbsp;&nbsp; Impairments and abandonments  | 6221 | 1237 |
| &nbsp;&nbsp;&nbsp; Remeasurement gain on business combination  | (14924) |  |
| &nbsp;&nbsp;&nbsp; Equity in losses of unconsolidated entities  | 4892 | 352 |
| &nbsp;&nbsp;&nbsp; Other  | 2497 | 2029 |
| Adjusted EBITDA  | $260283 | $258395 |

---

(1) For the year ended December 31, 2025, these costs relate to severance expense in connection with the termination of certain former management employees related to a reorganization. For the year ended December 31, 2024, these costs related to severance costs associated with our former chief financial officer ("CFO").

The following table presents a reconciliation of net cash provided by operating activities to FCF for the periods indicated:

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| | | |
|:---|:---|:---|
| | **Year ended December 31,**  | **Year ended December 31,**  |
| | **2025**  | **2024**  |
|  | **(In thousands)**  | **(In thousands)**  |
| Net cash provided by operating activities  | $214673 | $234886 |
| Purchase of property and equipment  | (294562) | (173153) |
| Proceeds received from sale of property and equipment  | 15251 | 15809 |
| Free cash flow  | $(64638) | $77542 |

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### R ISK FACTORS
 *An investment in our securities involves a high degree of risk. You should carefully consider the risks described below, together with all of the other information included in this prospectus supplement, the accompanying base prospectus and the documents we incorporate by reference, including the risk factors set forth in "Item 1A. Risk Factors" of our Annual Report on Form 10-K for the year ended December 31, 2025, in evaluating an investment in our securities. Our business, prospects, financial condition or operating results could be harmed by any of these risks, as well as other risks not currently known to us or that we currently consider immaterial. The trading price of our Class A common stock could decline due to any of these risks, and, as a result, you may lose all or part of your investment. Before deciding whether to invest in our securities, you should also refer to the other information contained in or incorporated by reference into this prospectus supplement, including the section entitled "Cautionary Note Regarding Forward-Looking Statements."* 

#### R isks Related to Our Capital Structure
 ***We may not be able to continue to pay or maintain our cash dividends and the failure to do so may negatively affect our share price.***

Since the fourth quarter of 2022, we have paid a quarterly cash dividend on our shares of Class A common stock and SES Holdings, LLC Units (along with Class B Shares). Most recently, in January 2026, we announced a quarterly cash dividend of $0.07 per share. Our ability to pay cash dividends depends on, among other things, our cash flows from operations, our cash requirements, our financial condition, the degree to which we are/or become leveraged, contractual restrictions binding on us, provisions of applicable law and other factors that our board of directors may deem relevant. There can be no assurance that we will generate sufficient cash from continuing operations in the future or have sufficient cash surplus or net profits to pay dividends on our Class A common stock. Our dividend policy is based upon our directors' current assessment of our business and the environment in which we operate, and that assessment could change based on business development opportunities (which could, for example, increase our need for capital expenditures) or new growth opportunities. All future dividend payments are subject to quarterly review and approval by our board of directors. Our board of directors may, in its discretion, decrease the level of cash dividends or entirely discontinue the payment of cash dividends. A reduction or elimination of cash dividends could negatively affect the market price of our Class A common stock.

 ***We may incur indebtedness or issue additional equity securities to execute our long-term growth strategy, which may reduce our profitability or result in significant dilution to our stockholders.***

Constructing and maintaining water infrastructure used in the oil and gas industry requires significant capital. We may require additional capital in the future to develop and construct water sourcing, transfer, recycling and other related infrastructure to execute our growth strategy. For the years ended December 31, 2025, 2024 and 2023, we spent $294.6 million, $173.2 million and $135.9 million, respectively, in capital expenditures (excluding expenditures connected with business combinations). Historically, we have financed these investments through cash flows from operations, external borrowings, capital contributions and proceeds from the issuance of equity securities. These sources of capital may not be available to us in the future. If we are unable to fund capital expenditures for any reason, we may not be able to capture available growth opportunities or effectively maintain our existing assets and any such failure could have a material adverse effect on our results of operations and financial condition. If we incur additional indebtedness or issue additional equity securities, our profitability may be reduced and our stockholders may experience significant dilution.

 ***Our Sustainability-Linked Credit Facility subjects us to various financial and other restrictive covenants. These restrictions may limit our operational or financial flexibility and could subject us to potential defaults under our Sustainability-Linked Credit Facility.***

Our Sustainability-Linked Credit Facility subjects us to significant financial and other restrictive covenants, including restrictions on our ability to consolidate or merge with other companies, conduct asset sales, incur

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additional indebtedness, grant liens, issue guarantees, make investments, loans or advances, pay dividends and enter into certain transactions with affiliates.

If we are unable to remain in compliance with the covenants of our Sustainability-Linked Credit Facility, with such non-compliance resulting in an event of default, then the lenders may declare all amounts outstanding under the Sustainability-Linked Credit Facility to be immediately due and payable and exercise other rights and remedies thereunder. Any such acceleration or exercise of rights or remedies thereunder could have a material adverse effect on our financial condition and results of operations.

 ***Future sales of our equity securities, or the perception that such sales may occur, may depress our share price, and any additional capital raised through the sale of equity or convertible securities may dilute your ownership in us.***

Subject to certain limitations and exceptions, Crestview and its permitted transferees may exchange their SES Holdings LLC Units (together with a corresponding number of shares of Class B common stock) for shares of Class A common stock (on a one-for-one basis, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions) and then sell those shares of Class A common stock. Additionally, we may in the future issue our previously authorized and unissued securities. We are authorized to issue 350 million shares of Class A common stock, 150 million shares of Class B common stock and 50 million shares of preferred stock with such designations, preferences and rights as determined by our board of directors. The potential issuance of such additional shares of equity securities will result in the dilution of the ownership interests of the holders of our Class A common stock and may create downward pressure on the trading price, if any, of our Class A common stock.

In addition, Legacy Owner Holdco, Crestview Partners II SES Investment B, LLC (collectively, the "Registration Rights Holders"), who collectively own approximately 20 million shares of our common stock, are party to a registration rights agreement that provides, among other things, for parties to that agreement to initiate or participate in an underwritten public offering of all or a portion of their shares. The Registration Rights Holders may exercise their rights under such agreement in their sole discretion, and sales pursuant to such rights may be material in amount and occur at any time. The sales of substantial amounts of our Class A common stock or the perception that these sales may occur, could cause the market price of our Class A common stock to decline and impair our ability to raise capital. We also may grant additional registration rights in connection with any future issuance of our capital stock.

We cannot predict the size of future issuances of our Class A common stock or securities convertible into Class A common stock or the effect, if any, that future issuances and sales of shares of our Class A common stock will have on the market price of our Class A common stock. Sales of substantial amounts of our Class A common stock (including shares issued in connection with an acquisition), or the perception that such sales could occur, may adversely affect prevailing market prices of our Class A common stock.

 ***Provisions in our amended and restated certificate of incorporation and amended and restated bylaws and Delaware law may discourage a takeover attempt even if a takeover might be beneficial to our stockholders.***

Provisions contained in our Fifth Amended and Restated Certificate of Incorporation and our Third Amended and Restated Bylaws, which we refer to herein as our "amended and restated certificate of incorporation" and "amended and restated bylaws," respectively, could make it more difficult for a third party to acquire us. Provisions of our amended and restated certificate of incorporation and amended and restated bylaws impose various procedural and other requirements, which could make it more difficult for stockholders to effect certain corporate actions. For example, our amended and restated certificate of incorporation authorizes our board of directors to determine the rights, preferences, privileges and restrictions of unissued series of preferred stock without any vote or action by our stockholders. Thus, our board of directors can authorize and issue shares of preferred stock with voting or conversion rights that could adversely affect the voting or other rights of holders of our capital stock. These rights may have the effect of delaying or deterring a change of control of our company. Additionally, our amended and restated bylaws establish limitations on the removal of directors and on the ability of our stockholders to call special meetings and include advance notice requirements for nominations for election to

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our board of directors and for proposing matters that can be acted upon at stockholder meetings. These provisions could limit the price that certain investors might be willing to pay in the future for shares of our Class A common stock.

In addition, certain change of control events have the effect of accelerating the payment due under our TRAs (as defined herein), which could be substantial and accordingly serve as a disincentive to a potential acquirer of our company.

 ***Our amended and restated certificate of incorporation contains a provision renouncing our interest and expectancy in certain corporate opportunities, which could adversely affect our business or prospects.***

Our amended and restated certificate of incorporation provides that, to the fullest extent permitted by applicable law, we renounce any interest or expectancy in any business opportunity that involves any aspect of the energy business or industry and that may be from time to time presented to any member of (i) Legacy Owner Holdco; Crestview Partners II SES Investment, LLC; any funds, limited partnerships or other investment entities or vehicles managed by Crestview Partners or controlled by Crestview GP; B-29 Investments, LP; Sunray Capital, LP; Proactive Investments, LP and their respective affiliates, other than us (collectively, the "SES Group"); (ii) the other entities (existing and future) that participate in the energy industry and in which the SES Group owns substantial equity interests (the "Portfolio Companies") or (iii) any director or officer of the corporation who is also an employee, partner, member, manager, officer or director of any member of the SES Group or the Portfolio Companies, including our Chairman, President and Chief Executive Officer, John D. Schmitz, and our Executive Vice President, Business and Regulatory Affairs, Cody Ortowski, even if the opportunity is one that we might reasonably have pursued or had the ability or desire to pursue if granted the opportunity to do so. Mr. Schmitz controls both B-29 Investments, LP and Sunray Capital, LP and is a direct and indirect beneficiary of these provisions in our amended and restated certificate of incorporation. Our amended and restated certificate of incorporation further provides that no such person or party shall be liable to us by reason of the fact that such person pursues any such business opportunity or fails to offer any such business opportunity to us.

As a result, any member of the SES Group or the Portfolio Companies or any director or officer of the corporation who is also an employee, partner, member, manager, officer or director of any member of the SES Group or the Portfolio Companies may become aware, from time to time, of certain business opportunities, such as acquisition opportunities, and may direct such opportunities to other businesses in which they have invested, in which case we may not become aware of or otherwise have the ability to pursue such opportunity. Further, such businesses may choose to compete with us for these opportunities. As a result, by renouncing our interest and expectancy in any business opportunity that may be from time to time presented to any member of the SES Group or the Portfolio Companies or any director or officer of the corporation who is also an employee, partner, member, manager, officer or director of any member of the SES Group or the Portfolio Companies, our business or prospects could be adversely affected if attractive business opportunities are procured by such parties for their own benefit rather than for ours.

#### We may issue preferred stock whose terms could adversely affect the voting power or value of our Class A common stock.
Our amended and restated certificate of incorporation authorizes us to issue, without the approval of our stockholders, one or more classes or series of preferred stock having such designations, preferences, limitations and relative rights, including preferences over our Class A common stock respecting dividends and distributions, as our board of directors may determine. The terms of one or more classes or series of preferred stock could adversely impact the voting power or value of our Class A common stock. For example, we might grant holders of preferred stock the right to elect some number of our directors in all events or on the happening of specified events or the right to veto specified transactions. Similarly, the repurchase or redemption rights or liquidation preferences we might assign to holders of preferred stock could affect the residual value of the Class A common stock.

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 ***Our amended and restated certificate of incorporation designates the Court of Chancery of the State of Delaware as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders, which could limit our stockholders' ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees or agents.***

Our amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware will, to the fullest extent permitted by applicable law, be the sole and exclusive forum for (i) any derivative action or proceeding brought on our behalf, (ii) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers, employees or agents to us or our stockholders, (iii) any action asserting a claim against us or any director or officer or other employee or agent of ours arising pursuant to any provision of the Delaware General Corporation Law, our amended and restated certificate of incorporation or our amended and restated bylaws, or (iv) any action asserting a claim against us or any director or officer or other employee or agent of ours that is governed by the internal affairs doctrine, in each such case subject to such Court of Chancery having personal jurisdiction over the indispensable parties named as defendants therein.

The enforceability of similar choice of forum provisions in other companies' certificates of incorporation or similar governing documents has been challenged in legal proceedings, and it is possible that a court could find the choice of forum provisions contained in our amended and restated certificate of incorporation to be inapplicable or unenforceable, including with respect to claims arising under the U.S. federal securities laws.

To the fullest extent permitted by law, any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock will be deemed to have notice of, and consented to, the provisions of our amended and restated certificate of incorporation described in the preceding sentence. This choice of forum provision may limit a stockholder's ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers, employees or agents, which may discourage such lawsuits against us and such persons. Alternatively, if a court were to find these provisions of our amended and restated certificate of incorporation inapplicable to, or unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could adversely affect our business, financial condition or results of operations.

#### R isks Related to this Offering
 ***The market price of our Class A common stock is subject to volatility, and you may not be able to resell shares of your Class A common stock at or above the price you paid.***

The stock markets in general, and particularly in the past year, have experienced heightened volatility that has often been unrelated to the operating performance of particular companies. As a result, the market price of our common stock could be subject to wide fluctuations in response to, and the level of trading of our Class A common stock may be affected by, numerous factors, many of which are beyond our control. These factors include, among other things, our trading volume, the concentration of holdings or our Class A common stock, actual or anticipated variations in our operating results and cash flow, the nature and content of our earnings releases, geopolitical events, changes in government regulations, announcements or events that impact our products, customers, competitors or markets, business conditions in our markets and the general state of the securities markets, volatility in oil and gas prices and the market for oilfield services stocks, as well as general economic and market conditions and other factors that may affect our future results, including those described herein. Significant

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sales of our Class A common stock, or the expectation of these sales, by significant shareholders, officers or directors could materially and adversely affect the market price of our Class A common stock.

Additionally, volatility in the market price of our Class A common stock may prevent you from being able to sell your Class A common stock at or above the price at which you purchased the stock. As a result, you may suffer a loss on your investment. Securities class action litigation has often been instituted against companies following periods of volatility in the overall market and in the market price of a company's securities. Such litigation, if instituted against us, could result in substantial costs, divert our management's attention and resources and harm our business, operating results and financial condition.

 ***The underwriters of this offering may waive or release parties to the lock-up agreements entered into in connection with this offering, which could adversely affect the price of our Class A common stock.***

We and all of our directors and executive officers and certain of our significant stockholders have entered or will enter into lock-up agreements pursuant to which we and they will be subject to certain restrictions with respect to the sale or other disposition of our Class A common stock for a period of 60 days following the date of this prospectus. J.P. Morgan and BofA Securities, at any time and without notice, may release all or any portion of the Class A common stock subject to the foregoing lock-up agreements. See "Underwriting" for more information on these agreements. If the restrictions under the lock-up agreements are waived, then the Class A common stock, subject to compliance with the Securities Act or exceptions therefrom, will be available for sale into the public markets, which could cause the market price of our Class A common stock to decline and impair our ability to raise capital. Sales of a substantial number of shares upon expiration of the lock-up and market stand-off agreements, the perception that such sales may occur, or early release of these agreements, could cause our market price to fall or make it more difficult for you to sell your Class A common stock at a time and price that you deem appropriate.

 ***If securities or industry analysts adversely change their recommendations regarding our Class A common stock or if our operating results do not meet their expectations, our stock price could decline.***

The trading market for our Class A common stock will be influenced by the research and reports that industry or securities analysts publish about us or our business. If one or more of these analysts cease coverage of our company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline. Moreover, if one or more of the analysts who cover our company downgrades our Class A common stock or if our operating results do not meet their expectations, our stock price could decline.

#### We have broad discretion in the use of the net proceeds from this offering and may not use them effectively.
As of the date of this prospectus, we cannot specify with certainty the particular uses for the net proceeds we will receive from this offering. We will have broad discretion in the application of the net proceeds, including any of the purposes described in "Use of Proceeds." Any failure by us to apply these funds effectively could have a material adverse effect on our business.

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### U SE OF PROCEEDS
We estimate that after deducting underwriting discounts and commissions and estimated offering expenses payable by us, we will receive approximately $ million of net proceeds from the sale of our Class A common stock in this offering. We intend to use the net proceeds that we receive from this offering to purchase SES Holdings LLC Units (or SES Holdings LLC Units if the underwriters exercise in full their option to purchase additional shares of Class A common stock) from SES Holdings LLC at a price per SES Holdings LLC Unit equal to the per share price of Class A common stock in this offering, less the underwriting discounts and commissions.

We intend to cause SES Holdings LLC to use the net proceeds it receives from us in connection with this offering for general corporate purposes, including water infrastructure growth capital projects, potential acquisitions or debt repayment under our sustainability-linked credit facility. If the underwriters exercise their option to purchase additional shares of Class A common stock, we will use the additional net proceeds to purchase additional SES Holdings LLC Units from SES Holdings LLC to maintain the one- to-one ratio between the number of shares of Class A common stock issued by us and the number of SES Holdings LLC Units.

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### D IVIDEND POLICY
The Company's board of directors initiated a dividend program in 2022 under which the Company intends to pay regular quarterly dividends, which commenced with the first payment of a quarterly cash dividend of $0.05 per share of Class A common stock on November 17, 2022 (along with a comparable distribution of $0.05 per unit for holders of units of SES Holdings, LLC who also hold an equal number of shares of Class B common stock).

The Company most recently announced a quarterly dividend of $0.07 per share on January 22, 2026 to be paid on February 18, 2026 to holders of record as of the close of business on February 6, 2026.

Our future dividend policy is within the discretion of our board of directors, and all future dividend payments are subject to quarterly review and approval by our board of directors, and will depend upon then-existing conditions, including our results of operations and financial condition, capital requirements, business prospects, statutory and contractual restrictions on our ability to pay dividends, including restrictions contained in our Sustainability-Linked Credit Facility and other factors our board of directors may deem relevant.

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### C APITALIZATION
The following table sets forth our cash and cash equivalents and capitalization as of December 31, 2025:

• on an actual basis; and

• as adjusted to give effect to the issuance and sale of Class A common stock in this offering, assuming no exercise by the underwriters of their option to purchase additional shares, and the application of the net proceeds therefrom as set forth under "Use of Proceeds."

You should read the following table in conjunction with "Use of Proceeds", included elsewhere in this prospectus supplement, and "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2025 as incorporated by reference herein.

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| | | |
|:---|:---|:---|
| | **As of December 31, 2025**  | **As of December 31, 2025**  |
| | **Actual**  | **As Adjusted**  |
|  | **(In thousands, except par value) <br> (Unaudited)**  | **(In thousands, except par value) <br> (Unaudited)**  |
| **Cash and cash equivalents**  | $18084 | $— |
| **Long-term debt** |  |  |
| &nbsp;&nbsp;&nbsp; Revolving Credit Facility(1)  | $70000 | $700000 |
| &nbsp;&nbsp;&nbsp; Term Loan Facility(1)  | 250000 | 250000 |
| Less: debt issuance costs, net of amortization  | (3707) | (3707) |
| Less: current portion of long-term debt  | (31250) | (31250) |
| &nbsp;&nbsp;&nbsp; Total long-term debt, net of debt issuance costs  | $285043 | $285043 |
| **Stockholders' equity** |  |  |
| &nbsp;&nbsp;&nbsp; Class A common stock, $0.01 par value; 350,000,000 shares authorized and <br> 104,884,902 shares issued and outstanding (actual); shares issued <br> outstanding (as adjusted)(2)  | 1049 |  |
| &nbsp;&nbsp;&nbsp; Class B common stock, $0.01 par value; 150,000,000 shares authorized and <br> 16,221,101 shares issued and outstanding  | 162 | 162 |
| &nbsp;&nbsp;&nbsp; Preferred stock, $0.01 par value; 50,000,000 shares authorized; no shares issued and outstanding  |  |  |
| &nbsp;&nbsp;&nbsp; Additional paid-in capital  | 989329 |  |
| &nbsp;&nbsp;&nbsp; Accumulated deficit  | (184924) | (184924) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total stockholders' equity  | $805616 | $— |
| **Noncontrolling interests**  | 121451 | 121451 |
| Total equity  | 927067 |  |
| **Total capitalization**  | $1212110 | $— |

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(1) As of December 31, 2025, cash and cash equivalents totaled $18.1 million and we had approximately $145.5 million of available borrowing capacity under the Revolving Credit Facility under our Sustainability-Linked Credit Facility. As of December 31, 2025, we had $320.0 million in outstanding indebtedness, the borrowing base for the Revolving Credit Facility under the Sustainability-Linked Credit Facility was $235.1 million, the borrowing base for the Term Loan Facility under the Sustainability-Linked Credit Facility was $426.3 million and outstanding letters of credit totaled $19.6 million. As of February 16, 2026, we had $363.5 million in outstanding indebtedness, the borrowing base for the Revolving Credit Facility under the Sustainability-Linked Credit Facility was $214.5 million, the borrowing base for the Term Loan under the Sustainability-Linked Credit Facility was $426.3 million, the outstanding letters of credit totaled $19.6 million, and the available borrowing capacity under the Sustainability-Linked Credit Facility was $81.4 million.

(2) Since December 31, 2025, we have issued 541,181 shares in connection with our long-term incentive plan.

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### C ERTAIN ERISA CONSIDERATIONS
The following is a summary of certain considerations associated with the acquisition and holding of shares of Class A common stock by (a) employee benefit plans that are subject to Title I of the Employee Retirement Income Security Act of 1974, as amended ("ERISA"), (b) plans, individual retirement accounts and other arrangements that are subject to Section 4975 of the Internal Revenue Code of 1986, as amended (the "Code") or employee benefit plans that are governmental plans (as defined in Section 3(32) of ERISA), certain church plans (as defined in Section 3(33) of ERISA), non-U.S. plans (as described in Section 4(b)(4) of ERISA) or other plans that are not subject to the foregoing but may be subject to provisions under any other federal, state, local, non-U.S. or other laws or regulations that are similar to such provisions of ERISA or the Code (collectively, "Similar Laws"), and (c) entities whose underlying assets are considered to include "plan assets" (within the meaning of ERISA) of any such plan, account or arrangement by reason of a plan's investment in such entities (each of (a), (b) and (c), a "Plan").

This summary is based on the provisions of ERISA and the Code (and related regulations and administrative and judicial interpretations) as of the date of this prospectus supplement. This summary does not purport to be complete, and no assurance can be given that future legislation, court decisions, regulations, rulings or pronouncements will not significantly modify the requirements summarized below. Any of these changes may be retroactive and may thereby apply to transactions entered into prior to the date of their enactment or release. This discussion is general in nature and is not intended to be all inclusive, nor should it be construed as investment or legal advice.

#### G eneral Fiduciary Matters
ERISA and the Code impose certain duties on persons who are fiduciaries of a Plan subject to Title I of ERISA or Section 4975 of the Code (an "ERISA Plan") and prohibit certain transactions involving the assets of an ERISA Plan and its fiduciaries or other interested parties. Under ERISA and the Code, any person who exercises any discretionary authority or control over the administration of an ERISA Plan or the management or disposition of the assets of an ERISA Plan, or who renders investment advice for a fee or other compensation to an ERISA Plan, is generally considered to be a fiduciary of the ERISA Plan (within the meaning of Section 3(21) of ERISA).

In considering an investment in shares of Class A common stock with a portion of the assets of any Plan, a fiduciary should consider the Plan's particular circumstances and all of the facts and circumstances of the investment and determine whether the acquisition and holding of shares of Class A common stock is in accordance with the documents and instruments governing the Plan and the applicable provisions of ERISA, the Code, or any Similar Law relating to the fiduciary's duties to the Plan, including, without limitation:

• whether the investment is prudent under Section 404(a)(1)(B) of ERISA and any other applicable Similar Laws;

• whether, in making the investment, the ERISA Plan will satisfy the diversification requirements of Section 404(a)(1)(C) of ERISA and any other applicable Similar Laws;

• whether the investment is permitted under the terms of the applicable documents governing the Plan;

• whether the acquisition or holding of the shares of Class A common stock will constitute a "prohibited transaction" under Section 406 of ERISA or Section 4975 of the Code (please see discussion under "—Prohibited Transaction Issues" below); and

• whether the Plan will be considered to hold, as plan assets, (i) only shares of Class A common stock or (ii) an undivided interest in our underlying assets (please see the discussion under "—Plan Asset Issues" below).

#### P rohibited Transaction Issues
Section 406 of ERISA and Section 4975 of the Code prohibit ERISA Plans from engaging in specified transactions involving plan assets with persons or entities who are "parties in interest," within the meaning of ERISA, or "disqualified persons," within the meaning of Section 4975 of the Code, unless an exemption is available. A party

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in interest or disqualified person who engages in a non-exempt prohibited transaction may be subject to excise taxes and other penalties and liabilities under ERISA and the Code. In addition, the fiduciary of the ERISA Plan that engages in such a non-exempt prohibited transaction may be subject to excise taxes, penalties and liabilities under ERISA and the Code. The acquisition and/or holding of shares of Class A common stock by an ERISA Plan with respect to which the issuer, the initial purchaser, or a guarantor is considered a party in interest or a disqualified person may constitute or result in a direct or indirect prohibited transaction under Section 406 of ERISA and/or Section 4975 of the Code, unless the investment is acquired and is held in accordance with an applicable statutory, class or individual prohibited transaction exemption.

Because of the foregoing, shares of Class A common stock should not be acquired or held by any person investing "plan assets" of any Plan, unless such acquisition and holding will not constitute a non-exempt prohibited transaction under ERISA and the Code or a similar violation of any applicable Similar Laws.

#### P lan Asset Issues
Additionally, a fiduciary of a Plan should consider whether the Plan will, by investing in us, be deemed to own an undivided interest in our assets, with the result that we would become a fiduciary of the Plan and our operations would be subject to the regulatory restrictions of ERISA, including its prohibited transaction rules, as well as the prohibited transaction rules of the Code and any similar rules under other applicable Similar Laws.

The Department of Labor (the "DOL") regulations provide guidance with respect to whether the assets of an entity in which ERISA Plans acquire equity interests would be deemed "plan assets" under some circumstances. Under these regulations, an entity's assets generally would not be considered to be "plan assets" if, among other things:

(a) the equity interests acquired by ERISA Plans are "publicly-offered securities" (as defined in the DOL regulations)—i.e., the equity interests are part of a class of securities that is widely held by 100 or more investors independent of the issuer and each other, are freely transferable, and are either registered under certain provisions of the federal securities laws or sold to the ERISA Plan as part of a public offering under certain conditions;

(b) the entity is an "operating company" (as defined in the DOL regulations)—i.e., it is primarily engaged in the production or sale of a product or service, other than the investment of capital, either directly or through a majority-owned subsidiary or subsidiaries; or

(c) there is no significant investment by "benefit plan investors" (as defined in the DOL regulations)—i.e., immediately after the most recent acquisition by an ERISA Plan of any equity interest in the entity, less than 25% of the total value of each class of equity interest (disregarding certain interests held by persons (other than benefit plan investors) with discretionary authority or control over the assets of the entity or who provide investment advice for a fee (direct or indirect) with respect to such assets, and any affiliates thereof) is held by ERISA Plans, IRAs and certain other Plans (but not including governmental plans, foreign plans and certain church plans), and entities whose underlying assets are deemed to include plan assets by reason of a Plan's investment in the entity.

Due to the complexity of these rules and the excise taxes, penalties and liabilities that may be imposed upon persons involved in non-exempt prohibited transactions, it is particularly important that fiduciaries, or other persons considering acquiring and/or holding shares of our Class A common stock on behalf of, or with the assets of, any Plan, consult with their counsel regarding the potential applicability of ERISA, Section 4975 of the Code and any Similar Laws to such investment and whether an exemption would be applicable to the acquisition and holding of shares of Class A common stock. Purchasers of shares of Class A common stock have the exclusive responsibility for ensuring that their acquisition and holding of shares of Class A common stock complies with the fiduciary responsibility rules of ERISA and does not violate the prohibited transaction rules of ERISA or the Code or constitute a similar violation under any applicable Similar Laws. The sale of shares of Class A common stock to a Plan is in no respect a representation by us or any of our affiliates or representatives that such an investment meets all relevant legal requirements with respect to investments by any such Plan or that such investment is appropriate for any such Plan.

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### M ATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON- U.S. HOLDERS
The following is a summary of the material U.S. federal income tax considerations related to the purchase, ownership and disposition of our Class A common stock by a non-U.S. holder (as defined below) that acquired such Class A common stock pursuant to this offering and holds our Class A common stock as a "capital asset" within the meaning of Section 1221 of the Code (generally, property held for investment). This summary is based on the provisions of the Code, U.S. Treasury regulations promulgated thereunder, administrative rulings and judicial decisions, all as in effect on the date hereof, and all of which are subject to change or differing interpretations, possibly with retroactive effect. We cannot assure you that a change in law will not significantly alter the tax considerations that we describe in this summary. We have not sought any ruling from the Internal Revenue Service ("IRS") with respect to the statements made and the positions and conclusions described in the following summary, and there can be no assurance that the IRS or a court will agree with such statements, positions and conclusions.

This summary does not address all aspects of U.S. federal income taxation that may be relevant to non-U.S. holders in light of their personal circumstances. In addition, this summary does not address the impact of the Medicare surtax on certain net investment income, U.S. federal estate or gift tax laws, any U.S. state or local or non-U.S. tax laws or any tax treaties. This summary also does not address all U.S. federal income tax considerations that may be relevant to particular non-U.S. holders in light of their personal circumstances or that may be relevant to certain categories of investors that may be subject to special rules, such as:

• banks, insurance companies or other financial institutions;

• tax-exempt or governmental organizations;

• tax-qualified retirement plans;

• "qualified foreign pension funds" as defined in Section 897(l)(2) of the Code (or any entities all of the interests of which are held by a qualified foreign pension fund);

• dealers in securities or foreign currencies;

• persons whose functional currency is not the U.S. dollar;

• traders in securities that use the mark-to-market method of accounting for U.S. federal income tax purposes;

• "controlled foreign corporations", "passive foreign investment companies", and corporations that accumulate earnings to avoid U.S. federal income tax;

• entities or arrangements treated as partnerships or pass-through entities for U.S. federal income tax purposes or holders of interests therein;

• persons deemed to sell our Class A common stock under the constructive sale provisions of the Code;

• persons that acquired our Class A common stock through the exercise of employee stock options or otherwise as compensation or through a tax-qualified retirement plan;

• persons that hold our Class A common stock as part of a straddle, appreciated financial position, synthetic security, hedge, conversion transaction or other integrated investment or risk reduction transaction; and

• certain former citizens or long-term residents of the United States.

 **PROSPECTIVE INVESTORS SHOULD CONSULT WITH THEIR OWN TAX ADVISORS WITH RESPECT TO THE APPLICATION OF THE U.S. FEDERAL INCOME TAX LAWS (INCLUDING ANY POTENTIAL FUTURE CHANGES THERETO) TO THEIR PARTICULAR SITUATION, AS WELL AS ANY TAX CONSEQUENCES OF THE PURCHASE, OWNERSHIP AND DISPOSITION OF OUR CLASS A COMMON STOCK ARISING UNDER ANY OTHER TAX LAWS, INCLUDING U.S. FEDERAL ESTATE OR GIFT TAX LAWS OR UNDER THE LAWS OF ANY U.S. STATE OR LOCAL OR NON-U.S. TAXING JURISDICTION, OR UNDER ANY APPLICABLE INCOME TAX TREATY.** 

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#### N on- U.S. Holder Defined
For purposes of this discussion, a "non-U.S. holder" is a beneficial owner of our Class A common stock that is not for U.S. federal income tax purposes a partnership or any of the following:

• an individual who is a citizen or resident of the United States;

• a corporation (or other entity treated as a corporation for U.S. federal income tax purposes) created or organized in or under the laws of the United States, any state thereof or the District of Columbia;

• an estate the income of which is subject to U.S. federal income tax regardless of its source; or

• a trust (i) the administration of which is subject to the primary supervision of a U.S. court and which has one or more "United States persons" (within the meaning of Section 7701(a)(30) of the Code) who have the authority to control all substantial decisions of the trust or (ii) which has made a valid election under applicable U.S. Treasury regulations to be treated as a United States person.

If a partnership (including an entity or arrangement treated as a partnership for U.S. federal income tax purposes) holds our Class A common stock, the tax treatment of a partner in the partnership generally will depend upon the status of the partner, the activities of the partnership and certain determinations made at the partner level. Accordingly, we urge partners in partnerships (including entities or arrangements treated as partnerships for U.S. federal income tax purposes) considering the purchase of our Class A common stock to consult with their own tax advisors regarding the U.S. federal income tax considerations of the purchase, ownership and disposition of our Class A common stock by such partnership.

#### D istributions
Distributions of cash or other property on our common stock, if any, will constitute dividends for U.S. federal income tax purposes to the extent paid from our current or accumulated earnings and profits, as determined under U.S. federal income tax principles. To the extent those distributions exceed our current and accumulated earnings and profits, the distributions will be treated as a non-taxable return of capital to the extent of the non-U.S. holder's tax basis in our Class A common stock and thereafter as capital gain from the sale or exchange of such Class A common stock. See "—Gain on Sale or Other Taxable Disposition of Class A Common Stock." Subject to the withholding requirements under FATCA (as defined below) and with respect to effectively connected dividends, each of which is discussed below, any distribution made to a non-U.S. holder on our Class A common stock generally will be subject to U.S. withholding tax at a rate of 30% of the gross amount of the distribution unless an applicable income tax treaty provides for a lower rate. To receive the benefit of a reduced treaty rate, a non-U.S. holder must provide the applicable withholding agent with an IRS Form W-8BEN or IRS Form W-8BEN-E (or other applicable or successor form) certifying qualification for the reduced rate.

Dividends paid to a non-U.S. holder that are effectively connected with a trade or business conducted by the non-U.S. holder in the United States (and, if required by an applicable income tax treaty, are treated as attributable to a permanent establishment maintained by the non-U.S. holder in the United States) generally will be taxed on a net income basis at the rates and in the manner generally applicable to United States persons. Such effectively connected dividends will not be subject to U.S. withholding tax if the non-U.S. holder satisfies certain certification requirements by providing the applicable withholding agent with a properly executed IRS Form W-8ECI certifying eligibility for exemption. If the non-U.S. holder is a corporation for U.S. federal income tax purposes, it may also be subject to a branch profits tax (at a 30% rate or such lower rate as specified by an applicable income tax treaty) on its effectively connected earnings and profits (as adjusted for certain items), which will include effectively connected dividends.

#### G ain on Sale or Other Taxable Disposition of C lass A Common Stock
Subject to the discussion below under "—Backup Withholding and Information Reporting", a non-U.S. holder generally will not be subject to U.S. federal income or withholding tax on any gain realized upon the sale or other taxable disposition of our Class A common stock unless:

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• the non-U.S. holder is an individual who is present in the United States for a period or periods aggregating 183 days or more during the calendar year in which the sale or disposition occurs and certain other conditions are met;

• the gain is effectively connected with a trade or business conducted by the non-U.S. holder in the United States (and, if required by an applicable income tax treaty, is attributable to a permanent establishment maintained by the non-U.S. holder in the United States); or

• our Class A common stock constitutes a United States real property interest by reason of our status as a United States real property holding corporation ("USRPHC") for U.S. federal income tax purposes and as a result such gain is treated as effectively connected with a trade or business conducted by the non-U.S. holder in the United States.

A non-U.S. holder described in the first bullet point above will be subject to U.S. federal income tax at a rate of 30% (or such lower rate as specified by an applicable income tax treaty) on the amount of such gain, which generally may be offset by U.S. source capital losses, provided the non-U.S. holder has timely filed U.S. federal income tax returns with respect to such losses.

A non-U.S. holder whose gain is described in the second bullet point above or, subject to the exceptions described in the next paragraph, the third bullet point above, generally will be taxed on a net income basis at the rates and in the manner generally applicable to United States persons. If the non-U.S. holder is a corporation for U.S. federal income tax purposes whose gain is described in the second bullet point above, then such gain would also be included in its effectively connected earnings and profits (as adjusted for certain items), which may be subject to a branch profits tax (at a 30% rate or such lower rate as specified by an applicable income tax treaty).

Generally, a corporation is a USRPHC if the fair market value of its United States real property interests equals or exceeds 50% of the sum of the fair market value of its worldwide real property interests and its other assets used or held for use in a trade or business. We believe that we currently are not a USRPHC for U.S. federal income tax purposes, and we do not expect to become a USRPHC for the foreseeable future. However, in the event that we become a USRPHC, as long as our Class A common stock continues to be "regularly traded on an established securities market" (within the meaning of the U.S. Treasury regulations), only a non-U.S. holder that actually or constructively owns, or owned at any time during the shorter of the five-year period ending on the date of the disposition or the non-U.S. holder's holding period for the Class A common stock, more than 5% of our Class A common stock will be treated as disposing of a United States real property interest and will be taxable on gain realized on the disposition of our Class A common stock as a result of our status as a USRPHC. If we were to become a USRPHC and our Class A common stock were not considered to be regularly traded on an established securities market, each non-U.S. holder (regardless of the percentage of stock owned) would be treated as disposing of a United States real property interest and would be subject to U.S. federal income tax on a taxable disposition of our Class A common stock (as described in the preceding paragraph), and a 15% withholding tax would apply to the gross proceeds from such disposition.

Non-U.S. holders should consult with their own tax advisors with respect to the application of the foregoing rules to their ownership and disposition of our Class A common stock, including regarding potentially applicable income tax treaties that may provide for different rules.

#### B ackup Withholding and Information Reporting
Any distributions paid to a non-U.S. holder must be reported annually to the IRS and to the non-U.S. holder. Copies of these information returns may be made available to the tax authorities in the country in which the non-U.S. holder resides or is established. Payments of dividends to a non-U.S. holder generally will not be subject to backup withholding if the non-U.S. holder establishes an exemption by properly certifying its non-U.S. status on an IRS Form W-8BEN or IRS Form W-8BEN-E (or other applicable or successor form).

Payments of the proceeds from a sale or other disposition by a non-U.S. holder of our Class A common stock effected by or through a U.S. office of a broker generally will be subject to information reporting and backup

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withholding (at the applicable rate) unless the non-U.S. holder establishes an exemption by properly certifying its non-U.S. status on an IRS Form W-8BEN or IRS Form W-8BEN-E (or other applicable or successor form) and certain other conditions are met. Information reporting and backup withholding generally will not apply to any payment of the proceeds from a sale or other disposition of our Class A common stock effected outside the United States by a non-U.S. office of a broker. However, unless such broker has documentary evidence in its records that the non-U.S. holder is not a United States person and certain other conditions are met, or the non-U.S. holder otherwise establishes an exemption, information reporting will apply to a payment of the proceeds of the disposition of our Class A common stock effected outside the United States by such a broker if it has certain relationships within the United States.

Backup withholding is not an additional tax. Rather, the U.S. federal income tax liability (if any) of persons subject to backup withholding will be reduced by the amount of tax withheld. If backup withholding results in an overpayment of taxes, a refund may be obtained, provided that the required information is timely furnished to the IRS.

#### A dditional Withholding Requirements under FATCA
Sections 1471 through 1474 of the Code, and the U.S. Treasury regulations and administrative guidance issued thereunder ("FATCA"), impose a 30% withholding tax on "withholdable payments" (as defined in the Code), including dividends on our Class A common stock, if paid to a "foreign financial institution" or a "non-financial foreign entity" (each as defined in the Code) (including, in some cases, when such foreign financial institution or non-financial foreign entity is acting as an intermediary), unless (i) in the case of a foreign financial institution, such institution enters into an agreement with the U.S. government to withhold on certain payments and to collect and provide to the U.S. tax authorities substantial information regarding U.S. account holders of such institution (which includes certain equity and debt holders of such institution, as well as certain account holders that are non-U.S. entities with U.S. owners), (ii) in the case of a non-financial foreign entity, such entity certifies that it does not have any "substantial United States owners" (as defined in the Code) or provides the applicable withholding agent with a certification identifying the direct and indirect substantial United States owners of the entity (in either case, generally on an IRS Form W-8BEN-E), or (iii) the foreign financial institution or non-financial foreign entity otherwise qualifies for an exemption from these rules and provides appropriate documentation (such as an IRS Form W-8BEN-E). Foreign financial institutions located in jurisdictions that have an intergovernmental agreement with the United States governing these rules may be subject to different rules. Under certain circumstances, a holder might be eligible for refunds or credits of such taxes.

While gross proceeds from a sale or other disposition of our Class A common stock would have originally been subject to withholding under FATCA, proposed U.S. Treasury regulations provide that such payments of gross proceeds do not constitute withholdable payments. Taxpayers may generally rely on these proposed U.S. Treasury regulations until they are revoked or final U.S. Treasury regulations are issued. Non-U.S. holders are encouraged to consult with their own tax advisors regarding the effects of FATCA on an investment in our common stock.

 **INVESTORS CONSIDERING THE PURCHASE OF OUR CLASS A COMMON STOCK SHOULD CONSULT WITH THEIR OWN TAX ADVISORS REGARDING THE APPLICATION OF THE U.S. FEDERAL INCOME TAX LAWS (INCLUDING ANY POTENTIAL FUTURE CHANGES THERETO) TO THEIR PARTICULAR SITUATIONS AND THE APPLICABILITY AND EFFECT OF ANY OTHER TAX LAWS, INCLUDING U.S. FEDERAL ESTATE AND GIFT TAX LAWS AND ANY U.S. STATE OR LOCAL OR NON-U.S. TAX LAWS, AND TAX TREATIES.** 

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### U NDERWRITING
Under the terms and subject to the conditions contained in an underwriting agreement dated , 2026, we have agreed to sell to the underwriters named below, for whom J.P. Morgan Securities LLC ("J.P. Morgan") and BofA Securities, Inc. ("BofA Securities") are acting as representatives, the following respective numbers of shares of Class A common stock:

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| | |
|:---|:---|
| **Underwriter**  | **Number of <br> Shares**  |
| J.P. Morgan Securities LLC  |  |
| BofA Securities, Inc.  |  |
| Total  |  |

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The underwriting agreement provides that the underwriters are obligated to purchase all the shares of Class A common stock in the offering if any are purchased, other than those shares covered by the option described below. The underwriting agreement also provides that if an underwriter defaults the purchase commitments of non-defaulting underwriters may be increased or the offering may be terminated.

We have granted the underwriters a 30-day option to purchase up to additional shares of Class A common stock at the public offering price less the underwriting discounts and commissions. If the underwriters exercise this option, each will be obligated, subject to conditions contained in the underwriting agreement, to purchase a number of additional shares proportionate to that underwriter's initial amount reflected in the above table.

The underwriters propose to offer the shares of Class A common stock initially at the public offering price on the cover page of this prospectus supplement and to selling group members at that price less a selling concession of $ per share. After the initial offering of the shares of Class A common stock, the underwriters may change the public offering price and concession and discount to broker/dealers. The offering of the shares by the underwriters is subject to their receipt and acceptance of the shares being offered and subject to the underwriters' right to reject any order in whole or in part.

The following table shows the public offering price, underwriting discount and commissions to be paid by us and proceeds before expenses to us. The information assumes either no exercise or full exercise by the underwriters of their option to purchase additional shares.

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| | | | |
|:---|:---|:---|:---|
| | | **Total**  | **Total**  |
| | **Per Share**  | **Without <br> Option**  | **With <br> Option**  |
| Public offering price  |  | $— | $— |
| Underwriting discounts and commissions paid by us  |  | $— | $— |
| Proceeds, before expenses, to us  |  | $— | $— |

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We estimate that our out-of-pocket expenses for this offering will be approximately $. We have also agreed to reimburse the underwriters for certain of their expenses in an amount up to $. In connection with this offering, we have agreed not to offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, or file with the SEC a registration statement under the Securities Act relating to, any shares of our Class A common stock or securities convertible into or exchangeable or exercisable for any shares of our Class A common stock, or publicly disclose the intention to make any offer, sale, pledge, disposition or filing, without the prior written consent of J.P. Morgan and BofA Securities for a period of 60 days after the date of this prospectus supplement.

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We and our officers, directors and certain of our significant stockholders have agreed not to offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, any shares of our Class A common stock or securities convertible into or exchangeable or exercisable for any shares of our Class A common stock, enter into a transaction that would have the same effect, or enter into any swap, hedge or other arrangement that transfers, in whole or in part, any of the economic consequences of ownership of our Class A common stock, whether any of these transactions are to be settled by delivery of our Class A common stock or other securities, in cash or otherwise, or publicly disclose the intention to make any offer, sale, pledge or disposition, or to enter into any transaction, swap, hedge or other arrangement, without, in each case, the prior written consent of J.P. Morgan and BofA Securities for a period of 60 days after the date of this prospectus supplement.

J.P. Morgan and BofA Securities, in their sole discretion, may release the Class A common stock and other securities subject to the lock-up agreements described above in whole or in part at any time. When determining whether or not to release the Class A common stock and other securities from lock-up agreements, J.P. Morgan and BofA Securities will consider, among other factors, the holder's reasons for requesting the release and the number of shares of Class A common stock or other securities for which the release is being requested.

We have agreed to indemnify the underwriters against liabilities under the Securities Act, or contribute to payments that the underwriters may be required to make in that respect.

Our Class A common stock is listed on the NYSE and NYSE Texas under the symbol "WTTR."

The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment hedging, financing and brokerage activities. Certain of the underwriters and their respective affiliates have from time to time performed, and may in the future perform, various financial advisory, commercial banking and investment banking services for us and for our affiliates in the ordinary course of business for which they have received and would receive customary compensation.

In the ordinary course of their various business activities, the underwriters and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investments and securities activities may involve securities and/or instruments of the issuer. The underwriters and their respective affiliates may also make investment recommendations and/or publish or express independent research views in respect of such securities or instruments and may at any time hold, or recommend to clients that they acquire, long and/or short positions in such securities and instruments.

In connection with the offering the underwriters may engage in stabilizing transactions, syndicate covering transactions, penalty bids and passive market making in accordance with Regulation M under the Exchange Act.

• Stabilizing transactions permit bids to purchase the underlying security so long as the stabilizing bids do not exceed a specified maximum.

• Syndicate covering transactions involve purchases of the Class A common stock in the open market after the distribution has been completed in order to cover syndicate short positions. In determining the source of shares to close out the short position, the underwriters will consider, among other things, the price of shares available for purchase in the open market as compared to the price at which they may purchase shares through the option to purchase additional shares. If the underwriters sell more shares than could be covered by the option to purchase additional shares, a naked short position, the position can only be closed out by buying shares in the open market. A naked short position is more likely to be created if the underwriters are concerned that there could be downward pressure on the price of the shares in the open market after pricing that could adversely affect investors who purchase in the offering.

• Penalty bids permit the representatives to reclaim a selling concession from a syndicate member when the Class A common stock originally sold by the syndicate member is purchased in a stabilizing or syndicate covering transaction to cover syndicate short positions.

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• In passive market making, market makers in the Class A common stock who are underwriters or prospective underwriters may, subject to limitations, make bids for or purchases of our Class A common stock until the time, if any, at which a stabilizing bid is made.

These stabilizing transactions, syndicate covering transactions and penalty bids may have the effect of raising or maintaining the market price of our Class A common stock or preventing or retarding a decline in the market price of the Class A common stock. As a result the price of our Class A common stock may be higher than the price that might otherwise exist in the open market. These transactions may be effected on the NYSE, the NYSE Texas or otherwise and, if commenced, may be discontinued at any time.

A prospectus in electronic format may be made available on the websites maintained by one or more of the underwriters, or selling group members, if any, participating in this offering and one or more of the underwriters participating in this offering may distribute prospectus electronically. The representatives may agree to allocate a number of shares to underwriters and selling group members for sale to their online brokerage account holders. Internet distributions will be allocated by the underwriters and selling group members that will make internet distributions on the same basis as other allocations.

#### S elling Restrictions

#### EEA Restriction
In relation to each Member State of the European Economic Area (each a "Relevant State"), no Shares have been offered or will be offered pursuant to the offering to the public in that Relevant State prior to the publication of a prospectus in relation to the Shares which has been approved by the competent authority in that Relevant State or, where appropriate, approved in another Relevant State and notified to the competent authority in that Relevant State, all in accordance with the Prospectus Regulation, except that the Shares may be offered to the public in that Relevant State at any time:

(a) to any qualified investor as defined under Article 2 of the Prospectus Regulation;

(b) to fewer than 150 natural or legal persons (other than qualified investors as defined under Article 2 of the Prospectus Regulation), subject to obtaining the prior consent of representative for any such offer; or

(c) in any other circumstances falling within Article 1(4) of the Prospectus Regulation,

provided that no such offer of the Shares shall require the Company or any Underwriter to publish a prospectus pursuant to Article 3 of the Prospectus Regulation, supplement a prospectus pursuant to Article 23 of the Prospectus Regulation or publish an Annex IX document pursuant to Article 1(4) of the Prospectus Regulation.

For the purposes of this provision, the expression an "offer to the public" in relation to the Shares in any Relevant State means the communication in any form and by any means of sufficient information on the terms of the offer and any Shares to be offered so as to enable an investor to decide to purchase or subscribe for any Shares, and the expression "Prospectus Regulation" means Regulation (EU) 2017/1129.

#### N otice to United Kingdom Investors
No Shares have been offered or will be offered pursuant to the offering to the public in the United Kingdom except that the Shares may be offered to the public in the United Kingdom at any time:

(a) where the offer is conditional on the admission of the Shares to trading on the London Stock Exchange plc's main market (in reliance on the exception in paragraph 6(a) of Schedule 1 of the POATR);

(b) to any qualified investor as defined under paragraph 15 of Schedule 1 of the POATR;

(c) to fewer than 150 persons (other than qualified investors as defined under paragraph 15 of Schedule 1 of the POATR), subject to obtaining the prior consent of the representative for any such offer; or

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(d) in any other circumstances falling within Part 1 of Schedule 1 of the POATR.

For the purposes of this provision, the expression an "offer to the public" in relation to the Shares in the United Kingdom means the communication to any person which presents sufficient information on: (a) the Shares to be offered; and (b) the terms on which they are to be offered, to enable an investor to decide to buy or subscribe for the Shares and the expressions "POATR" means the Public Offers and Admissions to Trading Regulations 2024.

#### Hong Kong
The shares may not be offered or sold by means of any document other than (i) in circumstances which do not constitute an offer to the public within the meaning of the Companies Ordinance (Cap. 32, Laws of Hong Kong), or (ii) to "professional investors" within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder, or (iii) in other circumstances which do not result in the document being a "prospectus" within the meaning of the Companies Ordinance (Cap. 32, Laws of Hong Kong), and no advertisement, invitation or document relating to the shares may be issued or may be in the possession of any person for the purpose of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the laws of Hong Kong) other than with respect to shares which are or are intended to be disposed of only to persons outside Hong Kong or only to "professional investors" within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder.

#### Singapore
This prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the shares may not be circulated or distributed, nor may the shares be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor under Section 274 of the Securities and Futures Act, Chapter 289 of Singapore, or the SFA, (ii) to a relevant person, or any person pursuant to Section 275(1A), and in accordance with the conditions, specified in Section 275 of the SFA or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.

Where the shares are subscribed or purchased under Section 275 by a relevant person which is: (a) a corporation (which is not an accredited investor) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or (b) a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary is an accredited investor, shares, debentures and units of shares and debentures of that corporation or the beneficiaries' rights and interest in that trust shall not be transferable for 6 months after that corporation or that trust has acquired the shares under Section 275 except: (1) to an institutional investor under Section 274 of the SFA or to a relevant person, or any person pursuant to Section 275(1A), and in accordance with the conditions, specified in Section 275 of the SFA; (2) where no consideration is given for the transfer; or (3) by operation of law.

#### Japan
The securities have not been and will not be registered under the Financial Instruments and Exchange Law of Japan, or the Financial Instruments and Exchange Law, and each underwriter has agreed that it will not offer or sell any securities, directly or indirectly, in Japan or to, or for the benefit of, any resident of Japan (which term as used herein means any person resident in Japan, including any corporation or other entity organized under the laws of Japan), or to others for re-offering or resale, directly or indirectly, in Japan or to a resident of Japan, except pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Financial Instruments and Exchange Law and any other applicable laws, regulations and ministerial guidelines of Japan.

#### Brazil
The offer and sale of the securities have not been and will not be registered with the Brazilian Securities Commission (the "Comissão De Valores Mobiliários" or "CVM") and, therefore, will not be carried out by any

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means that would constitute a public offering in Brazil under CVM Resolution No 160, dated 13 July 2022, as amended ("CVM Resolution 160") or unauthorized distribution under Brazilian laws and regulations. The securities may only be offered to Brazilian professional investors (as defined by applicable CVM Regulation), who may only acquire the securities through a non-Brazilian account, with settlement outside Brazil in non-Brazilian Currency. The trading of these securities on regulated securities markets in Brazil is prohibited.

#### N otice to C anadian Residents

#### R esale Restrictions
The distribution of our Class A common stock in Canada is being made only in the provinces of Ontario, Quebec, Alberta and British Columbia on a private placement basis exempt from the requirement that we prepare and file a prospectus with the securities regulatory authorities in each province where trades of these securities are made. Any resale of our Class A common stock in Canada must be made under applicable Canadian securities laws which may vary depending on the relevant jurisdiction, and which may require resales to be made under available statutory exemptions or under a discretionary exemption granted by the applicable Canadian securities regulatory authority. These resale restrictions may under certain circumstances apply to resales outside of Canada. Purchasers are advised to seek legal advice prior to any resale of the securities.

#### R epresentations of C anadian Purchasers
By purchasing our Class A common stock in Canada and accepting delivery of a purchase confirmation, a purchaser is representing to us and the dealer from whom the purchase confirmation is received that:

• the purchaser is entitled under applicable Canadian securities laws to purchase our Class A common stock without the benefit of a prospectus qualified under those securities laws as it is an "accredited investor" as defined under National Instrument 45-106 Prospectus Exemptions,

• the purchaser is a "permitted client" as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations,

• where required by law, the purchaser is purchasing as principal and not as agent, and

• the purchaser has reviewed the text above under Resale Restrictions.

#### C onflicts of Interest
Canadian purchasers are hereby notified that the underwriters are relying on the exemption set out in section 3A.3 or 3A.4, if applicable, of National Instrument 33-105 Underwriting Conflicts from having to provide certain underwriter conflicts of interest disclosure in connection with this offering.

#### S tatutory Rights of Action
Securities legislation in certain provinces or territories of Canada may provide a purchaser with remedies for rescission or damages if the offering memorandum (including any amendment thereto) such as this document contains a misrepresentation, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser's province or territory. The purchaser of these securities in Canada should refer to any applicable provisions of the securities legislation of the purchaser's province or territory for particulars of these rights or consult with a legal advisor.

#### E nforcement of Legal Rights
All of our directors and officers as well as the experts named herein may be located outside of Canada and, as a result, it may not be possible for Canadian purchasers to effect service of process within Canada upon us or those persons. All or a substantial portion of our assets and the assets of those persons may be located outside of Canada and, as a result, it may not be possible to satisfy a judgment against us or those persons in Canada or to enforce a judgment obtained in Canadian courts against us or those persons outside of Canada.

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#### T axation and Eligibility for Investment
Canadian purchasers of our Class A common stock should consult their own legal and tax advisors with respect to the tax consequences of an investment in our Class A common stock in their particular circumstances and about the eligibility of our Class A common stock for investment by the purchaser under relevant Canadian legislation.

#### L anguage of Documents
 *Each Canadian purchaser hereby confirms its express wish that all documents evidencing or relating in any way to the sale of securities described herein and all other contracts and related documents be drafted in the English language. Chaque investisseur Canadian confirme sa volonté expresse que tous les documents faisant foi ou se rapportant de quelque manière que ce soit à la vente des valeurs mobilières décrites aux présentes ainsi que tous les autres contrats et documents s'y rattachant soient rédigées en langue anglaise.* 

#### United Arab Emirates (excluding the ADGM and the DIFC)
This prospectus is strictly private and confidential and is being distributed to a limited number of Professional Investors, within the meaning of the United Arab Emirates (the "UAE") Securities and Commodities Authority's (the "SCA") Board of Directors Decision No. (13/Chairman) of 2021 on the Regulations Manual of the Financial Activities and Status Regularization Mechanisms Rule Book (as amended), and must not be provided to any person other than the original recipient, and may not be reproduced or used for any other purpose. If you are in any doubt about the contents of this prospectus, you should consult an authorized financial adviser.

By receiving this prospectus, the person or entity to whom it has been issued understands, acknowledges and agrees that this prospectus has not been approved by or filed with the UAE Central Bank, the SCA or any other authorities in the UAE, nor have the underwriters received authorization or licensing from the UAE Central Bank, the SCA or any other authorities in the UAE to market or sell securities or other investments within the UAE. No marketing of any financial products or services has been or will be made from within the UAE other than in compliance with the laws of the UAE and no subscription to any securities or other investments may or will be consummated within the UAE. It should not be assumed that any of the underwriters is a licensed broker, dealer or investment adviser under the laws applicable in the UAE, or that any of them advise individuals resident in the UAE as to the appropriateness of investing in or purchasing or selling securities or other financial products. The securities offered pursuant to this prospectus may not be offered or sold directly or indirectly to the public in the UAE and do not constitute a public offer of securities in the UAE in accordance with Federal Decree No. 32 of 2021 on Commercial Companies (as amended) or otherwise.

#### Abu Dhabi Global Market ("ADGM")
This prospectus relates to an exempt offer which is not subject to any form of regulation or approval by the Financial Services Regulatory Authority (the "FSRA"). The FSRA has not approved this prospectus nor has any responsibility for reviewing or verifying any document or other documents in connection with this the offering. Accordingly, the FSRA has not approved this prospectus or any other associated documents nor taken any steps to verify the information set out in this prospectus, and has no responsibility for it.

1. The securities have not been offered and will not be offered to any persons in the ADGM except on the basis that an offer is:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (i) an "Exempt Offer" in accordance with the ADGM Financial Services and Markets Regulations 2015, as amended (the "FSMR") and the Markets Rules of the FSRA; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (ii) made only to persons who are "Authorised Persons" or "Recognised Bodies" (as such terms are defined in the FSMR) or persons to whom an invitation or inducement to engage in investment activity (within the meaning of section 18 of the FSMR) in connection with the issue or sale of any securities may otherwise lawfully be communicated or caused to be communicated.

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#### Dubai International Financial Centre ("DIFC")
This prospectus relates to an exempt offer which is not subject to any form of regulation or approval by the Dubai Financial Services Authority (the "DFSA"). The DFSA has not approved this prospectus nor has any responsibility for reviewing or verifying any document or other documents in connection with the offering. Accordingly, the DFSA has not approved this prospectus or any other associated documents nor taken any steps to verify the information set out in this prospectus, and has no responsibility for it.

2. The securities have not been offered and will not be offered to any persons in the DIFC except on the basis that an offer is:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (i) an "Exempt Offer" in accordance with the Markets Rules (MKT) Module of the DFSA Rulebook; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (ii) made only to persons who meet the "Deemed Professional Client" criteria set out in Rule 2.3.4 of the Conduct of Business (COB) module of the DFSA Rulebook, who are not natural persons.

#### Switzerland
The offering of the securities in Switzerland is exempt from requirement to prepare and publish a prospectus under the Swiss Financial Services Act ("FinSA") because such offering is made to professional clients within the meaning of the FinSA only and the securities will not be admitted to trading on any trading venue (exchange or multilateral trading facility) in Switzerland. This prospectus does not constitute a prospectus pursuant to the FinSA, and no such prospectus has been or will be prepared for or in connection with the offering of the securities.

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### L EGAL MATTERS
The validity of our Class A common stock offered by this prospectus will be passed upon for us by Vinson & Elkins L.L.P., Houston, Texas. Certain legal matters in connection with this offering will be passed upon for the underwriters by Latham & Watkins LLP, Houston, Texas.

### E XPERTS
The audited financial statements and management's assessment of the effectiveness of internal control over financial reporting incorporated by reference in this prospectus and elsewhere in the registration statement have been incorporated by reference in reliance upon the reports of Grant Thornton LLP, independent registered public accountants, upon authority of said firm as experts in accounting and auditing.

### W HERE YOU CAN FIND MORE INFORMATION
We have filed with the SEC a registration statement on Form S-3 (including the exhibits, schedules and amendments thereto) under the Securities Act, with respect to the shares of our Class A common stock offered hereby. This prospectus supplement does not contain all of the information set forth in the registration statement and the exhibits and schedules thereto. For further information with respect to us and the Class A common stock offered hereby, we refer you to the registration statement and the exhibits and schedules filed therewith and the accompanying base prospectus. Statements contained in this prospectus supplement as to the contents of any contract, agreement or any other document are summaries of the material terms of the contract, agreement or other document. With respect to each of these contracts, agreements or other documents filed as an exhibit to the registration statement, reference is made to the exhibits for a more complete description of the matter involved.

The SEC maintains a website at *www.sec.gov* that contains reports, proxy and information statements and other information regarding registrants that file electronically with the SEC. Our registration statement, of which this prospectus supplement constitutes a part, can be downloaded from the SEC's website. We file with or furnish to the SEC periodic reports and other information. These reports and other information may be obtained from the SEC's website as provided above. Our website is located at *www.selectwater.com*. We make our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, amendments to those reports and other information filed with or furnished to the SEC available, free of charge, through our website, as soon as reasonably practicable after those reports and other information are electronically filed with or furnished to the SEC. We make our website content available for information purposes only. Information on our website or any other website is not incorporated by reference into this prospectus supplement and does not constitute a part of this prospectus supplement and investors should not rely on such information in making a decision to purchase our Class A common stock.

We furnish or make available to our stockholders annual reports containing our audited financial statements prepared in accordance with GAAP. We also furnish or make available to our stockholders quarterly reports containing our unaudited interim financial information, including the information required by Form 10-Q, for the first three fiscal quarters of each fiscal year.

### I NCORPORATION OF CERTAIN INFORMATION BY REFERENCE
We "incorporate by reference" into this prospectus documents we file with the SEC, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is an important part of this prospectus. Some information contained in this prospectus updates the information incorporated by reference, and information that we file subsequently with the SEC will automatically update this prospectus. In other words, in the case of a conflict or inconsistency between information set forth in this prospectus and information that we file later and incorporate by reference into this prospectus, you should rely on the information contained in the document that was filed later.

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In particular, we incorporate by reference into this prospectus supplement the documents listed below and any filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act (other than, in each case, documents or information deemed to have been "furnished" and not "filed" in accordance with SEC rules):

• [Our Annual Report on Form 10-K for the year ended December 31, 2025, filed with the SEC on February 18, 2026.](https://www.sec.gov/ix?doc=/Archives/edgar/data/1693256/000110465926017085/wttr-20251231x10k.htm)

• [Our Definitive Proxy Statement for the 2025 Annual Meeting of Stockholders, filed with the SEC on March 18, 2025.](https://www.sec.gov/ix?doc=/Archives/edgar/data/1693256/000110465925025144/tm252372-4_def14a.htm)

• The description of our Class A common stock contained in [our Registration Statement on Form 8-A, filed with the SEC on April 18, 2017](https://www.sec.gov/Archives/edgar/data/1693256/000110465917024122/a17-11399_18a12b.htm), and any amendment or report filed with the SEC for the purpose of updating the description, including [Exhibit 4.3](https://www.sec.gov/Archives/edgar/data/1693256/000155837024001437/wttr-20231231xex4d3.htm) of the Company's Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on February 21, 2024, and any amendment or report filed with the SEC for the purpose of updating the description, and the description of our Class A common stock contained in [our Registration Statement on Form 8-A, filed with the SEC on August 14, 2025](https://www.sec.gov/Archives/edgar/data/1693256/000114036125031059/ef20053914_8a12b.htm), and any amendment or report filed with the SEC for the purpose of updating the description, including [Exhibit 4.3](https://www.sec.gov/Archives/edgar/data/1693256/000155837024001437/wttr-20231231xex4d3.htm) of the Company's Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 19, 2025, and any amendment or report filed with the SEC for the purpose of updating the description.

Any statement contained in a document incorporated or deemed to be incorporated by reference in this prospectus will be deemed to be modified or superseded to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference in this prospectus modifies or supersedes that statement. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this prospectus.

You may request a copy of the registration statement, the above filings and any future filings that are incorporated by reference into this prospectus, other than an exhibit to a filing unless that exhibit is specifically incorporated by reference into that filing, at no cost, by writing or calling us at the following address:

Select Water Solutions, Inc.

1820 North I-35

Gainesville, TX 76240

(940) 668-1818

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#### PROSPECTUS
![[MISSING IMAGE: lg_select-pn.jpg]](lg_select-pn.jpg)

### Select Water Solutions, Inc.

### Class A Common Stock Preferred Stock Depositary Shares Warrants
Select Water Solutions, Inc. (the "Company," "we," "our" or "us") may offer and sell the securities identified above from time to time in one or more offerings. This prospectus provides you with a general description of the securities offered hereby, including the Company's Class A common stock, par value $0.01 per share (the "Class A common stock"), and the general manner in which we will offer such securities. Each time we offer and sell securities, we will provide a supplement to this prospectus that contains specific information about the offering as well as the amounts, prices and terms of the securities. The supplement may also add, update or change information contained in this prospectus with respect to that offering. You should carefully read this prospectus and the applicable prospectus supplement before you invest in any of our securities.

We may offer and sell the securities described in this prospectus and any prospectus supplement to or through one or more underwriters, dealers and agents, or directly to purchasers, or through a combination of these methods. If any underwriters, dealers or agents are involved in the sale of any of the securities, their names and any applicable purchase price, fee, commission or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections of this prospectus entitled "About this Prospectus" and "Plan of Distribution" for more information. No securities may be sold without delivery of this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such securities.

 **INVESTING IN OUR SECURITIES INVOLVES RISKS. SEE THE "RISK FACTORS" ON PAGE [4](#tRIFA) OF THIS PROSPECTUS AND ANY SIMILAR SECTION CONTAINED IN THE APPLICABLE PROSPECTUS SUPPLEMENT CONCERNING FACTORS YOU SHOULD CONSIDER BEFORE INVESTING IN OUR SECURITIES.** 

Our Class A common stock is listed on the New York Stock Exchange and the NYSE Texas, Inc. under the symbol "WTTR." On February 17, 2026, the last reported sale price of our Class A common stock was $13.26 per share on each of the New York Stock Exchange and the NYSE Texas, Inc.

 **Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.** 

#### The date of this prospectus is February 19, 2026.

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#### **TABLE OF CONTENTS**

---

| | |
|:---|:---|
| | **Page**  |
| [ABOUT THIS PROSPECTUS](#tATP)  | [1](#tATP) |
| [CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS](#tCSRF)  | [2](#tCSRF) |
| [RISK FACTORS](#tRIFA)  | [4](#tRIFA) |
| [WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE](#tWYCF)  | [5](#tWYCF) |
| [THE COMPANY](#tTHCO)  | [7](#tTHCO) |
| [USE OF PROCEEDS](#tUOP)  | [8](#tUOP) |
| [DESCRIPTION OF CAPITAL STOCK](#tDOCS)  | [9](#tDOCS) |
| [DESCRIPTION OF DEPOSITARY SHARES](#tDODS)  | [13](#tDODS) |
| [DESCRIPTION OF WARRANTS](#tDOW)  | [14](#tDOW) |
| [PLAN OF DISTRIBUTION](#tPOD)  | [15](#tPOD) |
| [CERTAIN ERISA CONSIDERATIONS](#tCEC)  | [17](#tCEC) |
| [LEGAL MATTERS](#tLEMA)  | [19](#tLEMA) |
| [EXPERTS](#tEXP)  | [19](#tEXP) |

---

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#### ABOUT THIS PROSPECTUS
This prospectus is part of a registration statement on Form S-3 that we filed with the U.S. Securities and Exchange Commission, (the "SEC"), as a "well-known seasoned issuer" as defined in Rule 405 under the Securities Act of 1933, as amended (the "Securities Act"), using a "shelf" registration process. By using a shelf registration statement, we may sell securities from time to time and in one or more offerings as described in this prospectus. Each time that we offer and sell securities, we will provide a prospectus supplement to this prospectus that contains specific information about the securities being offered and sold and the specific terms of that offering. We may also authorize one or more free writing prospectuses to be provided to you that may contain material information relating to these offerings. The prospectus supplement or free writing prospectus may also add, update or change information contained in this prospectus with respect to that offering. If there is any inconsistency between the information in this prospectus and the applicable prospectus supplement or free writing prospectus, you should rely on the prospectus supplement or free writing prospectus, as applicable. Before purchasing any securities, you should carefully read both this prospectus and the applicable prospectus supplement (and any applicable free writing prospectuses), together with the additional information described under the heading "Where You Can Find More Information; Incorporation by Reference."

You should rely only on the information contained in this prospectus, any prospectus supplement and the documents we have incorporated by reference. We have not authorized anyone to provide you with any information or to make any representations other than those contained in this prospectus, any applicable prospectus supplement or any free writing prospectuses prepared by or on behalf of us or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We will not make an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus and the applicable prospectus supplement to this prospectus is accurate only as of the date on its respective cover, that the information appearing in any applicable free writing prospectus is accurate only as of the date of that free writing prospectus, and that any information incorporated by reference is accurate only as of the date of the document incorporated by reference, unless we indicate otherwise. Our business, financial condition, results of operations and prospects may have changed since those dates. This prospectus incorporates by reference, and any prospectus supplement or free writing prospectus may contain and incorporate by reference, market data and industry statistics and forecasts that are based on independent industry publications and other publicly available information. Although we believe these sources are reliable, we do not guarantee the accuracy or completeness of this information and we have not independently verified this information. In addition, the market and industry data and forecasts that may be included or incorporated by reference in this prospectus, any prospectus supplement or any applicable free writing prospectus may involve estimates, assumptions and other risks and uncertainties and are subject to change based on various factors, including those discussed under the heading "Risk Factors" contained in this prospectus, the applicable prospectus supplement and any applicable free writing prospectus, and under similar headings in other documents that are incorporated by reference into this prospectus. Accordingly, investors should not place undue reliance on this information.

When we refer to "Select Water Solutions, Inc.," "we," "our," "us" and the "Company" in this prospectus, we mean Select Water Solutions, Inc. and its subsidiaries, unless otherwise specified. When we refer to "you," we mean the potential holders of the applicable series of securities.

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#### CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
The information in this prospectus and the documents incorporated by reference herein includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). All statements, other than statements of historical fact, included in this Annual Report regarding our strategy, future operations, financial position, estimated revenues and losses, projected costs, prospects, plans and objectives of management are forward-looking statements. When used in this prospectus the words "could," "believe," "anticipate," "intend," "estimate," "expect," "project," "preliminary," "forecast," and similar expressions or variations are intended to identify forward-looking statements, although not all forward-looking statements contain such identifying words. These forward-looking statements are based on our current expectations and assumptions about future events and are based on currently available information as to the outcome and timing of future events. When considering forward-looking statements, you should keep in mind the risk factors and other cautionary statements described under the heading "Risk Factors" included in our Annual Report on Form 10-K for the year ended December 31, 2025, as well as those set forth from time to time in our other filings with the Securities and Exchange Commission (the "SEC"). These forward-looking statements are based on management's current belief, based on currently available information, as to the outcome and timing of future events.

Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to, those summarized below:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • global economic distress, including that resulting from the sustained Russia-Ukraine war and related economic sanctions, instability and continued hostilities in the Middle East, including increased tensions with Iran, instability and potential conflict with Venezuela, economic uncertainty as a result of changing trade policies, inflation and high interest rates, each of which may decrease demand for oil and natural gas or contribute to volatility in the prices for oil and natural gas, which may decrease demand for our services**;** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • actions taken by the members of the Organization of the Petroleum Exporting Countries ("OPEC") and Russia (together with OPEC and other allied producing countries, "OPEC+") with respect to oil production levels and announcements of potential changes in such levels, including the ability of the OPEC+ countries to agree on and comply with announced supply limitations, which may be exacerbated by increased hostilities in the Middle East, heightened tensions with Iran and the resumption of previously sanctioned oil from Venezuela**;** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • impacts related to changing United States ("U.S.") and foreign trade policies, including increased trade restrictions or tariffs, the impact of changes in diplomatic and trade relations, and the results of countermeasures and any tariff mitigation initiatives;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes in global political or economic conditions, generally, and in the markets we serve, including the rate of inflation and potential economic recession;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes in safety, health, environmental and other governmental policy and regulation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the enactment or promulgation of new laws or regulations or changes or modifications in existing laws, regulations, rules or governmental policies with respect to taxation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the level of capital spending and access to capital markets by oil and gas companies in response to changes in commodity prices or reduced demand;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the impact of central bank policy actions and disruptions in the bank and capital markets;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the potential deterioration of our customers' financial condition, including defaults resulting from actual or potential insolvencies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the degree to which consolidation among our customers may affect spending on U.S. drilling and completions, including the recent consolidation in the Permian Basin;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • trends and volatility in oil and gas prices, and our ability to manage through such volatility;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the impact of current and future laws, rulings, governmental regulations and policies, including those related to accessing water, disposing of wastewater, transferring produced water, interstate freshwater

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and produced water transfer, chemicals, carbon pricing, pipeline construction, emissions, hydraulic fracturing, leasing, permitting or drilling on federal lands and various other environmental matters;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the ability to source certain raw materials and other critical components or manufactured products globally on a timely basis from economically advantaged sources, including any delays and/or supply chain disruptions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • regional impacts to our business, including our key infrastructure assets within the Permian Basin, the Bakken, and the Haynesville regions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • capacity constraints on regional oil, natural gas and water gathering, processing and pipeline systems that result in a slowdown or delay in drilling and completion activity, and thus a decrease in the demand for our services in our core markets;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the impact of regulatory and related policy actions by federal, state and/or local governments, such as the Inflation Reduction Act of 2022 ("IRA 2022"), which may negatively impact the future production of oil and gas in the U.S., thereby reducing demand for our services;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to hire and retain key management and employees, including skilled labor;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our access to capital to fund expansions, acquisitions and our working capital needs and our ability to obtain debt or equity financing on satisfactory terms, or at all;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our health, safety and environmental performance;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the impact of competition on our operations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the degree to which our Exploration and Production ("E&P") customers may elect to operate their water-management services in-house rather than source these services from companies like us;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our level of indebtedness and our ability to comply with covenants contained in our Sustainability-Linked Credit Facility (as defined herein) or future debt instruments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • delays or restrictions in obtaining permits by us or our customers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • constraints in supply or availability of equipment used in our business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the impact of advances or changes in well-completion technologies or practices that result in reduced demand for our services, either on a volumetric or time basis;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • acts of terrorism, war or political or civil unrest in the U.S. or elsewhere, such as the Russia-Ukraine war, the instability and hostilities in the Middle East, including heightened tensions with Iran and any potential conflict with Venezuela;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • information technology failures or cyberattacks; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • accidents, weather, natural disasters or other events affecting our business.

These factors are not necessarily all of the important factors that could cause actual results to differ materially from those expressed in any of our forward-looking statements. Other unknown or unpredictable factors also could have material adverse effects on our future results. Our future results will depend upon various other risks and uncertainties, including those described elsewhere in this prospectus. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof. We undertake no obligation to update or revise any forward-looking statements after the date they are made, whether as a result of new information, future events or otherwise. All forward-looking statements attributable to us are qualified in their entirety by this cautionary note.

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#### RISK FACTORS
Investment in any securities offered pursuant to this prospectus and the applicable prospectus supplement involves risks. You should carefully consider the risk factors incorporated by reference to our most recent Annual Report on Form 10-K and any subsequent Quarterly Reports on Form 10-Q or Current Reports on Form 8-K we file after the date of this prospectus, and all other information contained or incorporated by reference into this prospectus, as updated by our subsequent filings under the Exchange Act, and the risk factors and other information contained in the applicable prospectus supplement and any applicable free writing prospectus before acquiring any of such securities. The occurrence of any of these risks might cause you to lose all or part of your investment in the offered securities. See "Where You Can Find More Information; Incorporation by Reference."

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#### WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY REFERENCE

#### Available Information
We file reports, proxy statements and other information with the SEC. The SEC maintains a website that contains reports, proxy and information statements and other information about issuers, such as us, who file electronically with the SEC. The address of that website is *www.sec.gov*.

Our website address is *www.selectwater.com*. The information on our website, however, is not, and should not be deemed to be, a part of this prospectus.

This prospectus and any prospectus supplement are part of a registration statement that we filed with the SEC and do not contain all of the information in the registration statement. The full registration statement may be obtained from the SEC or us, as provided below. Other documents establishing the terms of the offered securities are or may be filed as exhibits to the registration statement or documents incorporated by reference in the registration statement. Statements in this prospectus or any prospectus supplement about these documents are summaries and each statement is qualified in all respects by reference to the document to which it refers. You should refer to the actual documents for a more complete description of the relevant matters. You may inspect a copy of the registration statement through the SEC's website, as provided above.

#### Incorporation by Reference
The SEC's rules allow us to "incorporate by reference" information into this prospectus, which means that we can disclose important information to you by referring you to another document filed separately with the SEC. The information incorporated by reference is deemed to be part of this prospectus, and subsequent information that we file with the SEC will automatically update and supersede that information. Any statement contained in this prospectus or a previously filed document incorporated by reference will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained in this prospectus or a subsequently filed document incorporated by reference modifies or replaces that statement.

This prospectus and any accompanying prospectus supplement incorporate by reference the documents set forth below that have previously been filed with the SEC (except for information that is furnished rather than filed):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • [Our Annual Report on Form 10-K for the year ended December 31, 2025, filed with the SEC on February 18, 2026.](https://www.sec.gov/ix?doc=/Archives/edgar/data/1693256/000110465926017085/wttr-20251231x10k.htm)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • [Our Definitive Proxy Statement for the 2025 Annual Meeting of Stockholders, filed with the SEC on March 18, 2025.](https://www.sec.gov/ix?doc=/Archives/edgar/data/1693256/000110465925025144/tm252372-4_def14a.htm)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • The description of our Class A common stock contained in our Registration Statement on [Form 8-A, filed with the SEC on April 18, 2017](https://www.sec.gov/Archives/edgar/data/1693256/000110465917024122/a17-11399_18a12b.htm), and any amendment or report filed with the SEC for the purpose of updating the description, including [Exhibit 4.3](https://www.sec.gov/Archives/edgar/data/1693256/000155837024001437/wttr-20231231xex4d3.htm) of the Company's Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on February 21, 2024, and any amendment or report filed with the SEC for the purpose of updating the description, and the description of our Class A common stock contained in our Registration Statement on [Form 8-A, filed with the SEC on August 14, 2025](https://www.sec.gov/Archives/edgar/data/1693256/000114036125031059/ef20053914_8a12b.htm), and any amendment or report filed with the SEC for the purpose of updating the description, including [Exhibit 4.3](https://www.sec.gov/Archives/edgar/data/1693256/000155837024001437/wttr-20231231xex4d3.htm) of the Company's Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 19, 2025, and any amendment or report filed with the SEC for the purpose of updating the description.

All reports and other documents we subsequently file pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act prior to the termination of this offering but excluding any information furnished to (or deemed furnished to), rather than filed with, the SEC, will also be incorporated by reference into this prospectus and deemed to be part of this prospectus from the date of the filing of such reports and documents.

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You may request a free copy of any of the documents incorporated by reference in this prospectus by writing or telephoning us at the following address:

Select Water Solutions, Inc.

1820 North I-35

Gainesville, TX 76240

(940) 668-1818

Exhibits to the filings will not be sent, however, unless those exhibits have specifically been incorporated by reference in this prospectus or any accompanying prospectus supplement.

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#### THE COMPANY
We are a Delaware corporation whose Class A common stock is listed and traded on the New York Stock Exchange (the "NYSE") and the NYSE Texas, Inc. (the "NYSE Texas"). We are a leading provider of sustainable water-management solutions to the energy industry in the U.S. As a leader in the water management industry, we place the utmost importance on safe, environmentally responsible management of water throughout the lifecycle of a well. Additionally, we believe that responsibly managing water resources through our operations to help conserve and protect the environment in the communities in which we operate is paramount to our continued success. For additional information about our company, please read the documents listed under "Incorporation of Certain Information by Reference."

Our principal executive offices are located at 1820 North I-35, Gainesville, TX 76240, and our telephone number is (940) 668-1818.

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#### USE OF PROCEEDS
Except as otherwise provided in any applicable prospectus supplement, we intend to use the net proceeds we receive from the sale of securities for general corporate purposes, which may include funding of corporate and project overhead expenses, financing of capital expenditures, repayment of indebtedness (including amounts outstanding under our Sustainability-Linked Credit Facility), acquisitions and other strategic transactions, and additions to working capital.

We have not allocated specific amounts for any of these purposes. Any specific allocation of the net proceeds of an offering of securities to a specific purpose will be determined at the time of the offering and will be described in any applicable prospectus supplement. Pending application of the net proceeds, we may invest the net proceeds in short-term, investment-grade, interest-bearing securities or other marketable securities.

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#### DESCRIPTION OF CAPITAL STOCK
We are a Delaware corporation. The following description of our capital stock, our fifth amended and restated certificate of incorporation (the "Charter") and third amended and restated bylaws (the "Bylaws") does not purport to be complete and is qualified in its entirety by reference to the provisions of applicable law and to our Charter and Bylaws, which have been publicly filed with the SEC. See "Where You Can Find More Information; Incorporation by Reference."

Our authorized capital stock consists of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • 350,000,000 shares of Class A common stock, $0.01 par value per share;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • 50,000,000 shares of preferred stock; $0.01 par value per share; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • 150,000,000 shares of Class B common stock; $0.01 par value per share ("Class B common stock").

#### Class A Common Stock
*Voting Rights*. Holders of shares of our Class A common stock are entitled to one vote per share held of record on all matters to be voted upon by the stockholders. Under our Charter, holders of shares of our Class A common stock do not have cumulative voting rights in the election of directors. Under the Charter, holders of shares of our Class A common stock and Class B common stock vote together as a single class on all matters presented to our stockholders for their vote or approval, except as required by law.

*Dividend Rights*. Holders of shares of our Class A common stock are entitled to ratably receive dividends when and if declared by our board of directors out of funds legally available for that purpose, subject to any statutory or contractual restrictions on the payment of dividends and to any prior rights and preferences that may be applicable to any outstanding preferred stock.

*Liquidation Rights*. Upon our liquidation, dissolution, distribution of assets or other winding up, holders of shares of our Class A common stock are entitled to receive ratably the assets available for distribution to the stockholders after payment of liabilities and the liquidation preference of any of our outstanding shares of preferred stock.

*Other Matters*. The shares of Class A common stock have no preemptive or conversion rights and are not subject to further calls or assessment by us. There are no redemption or sinking fund provisions applicable to the Class A common stock. All outstanding shares of our Class A common stock are fully paid and non-assessable.

#### Class B Common Stock
*Voting Rights*. Holders of shares of our Class B common stock are entitled to one vote per share held of record on all matters to be voted upon by the stockholders. Holders of shares of our Class A common stock and Class B common stock vote together as a single class on all matters presented to our stockholders for their vote or approval, except as required by law.

*Dividend and Liquidation Rights*. Holders of our Class B common stock do not have any right to receive dividends, unless (i) the dividend consists of shares of our Class B common stock or of rights, options, warrants or other securities convertible or exercisable into or exchangeable for shares of Class B common stock paid proportionally with respect to each outstanding share of our Class B common stock and (ii) a dividend consisting of shares of Class A common stock or of rights, options, warrants or other securities convertible or exercisable into or exchangeable for shares of Class A common stock on the same terms is simultaneously paid to the holders of Class A common stock. Holders of our Class B common stock do not have any right to receive a distribution upon our liquidation or winding up.

*Other Matters*. The shares of Class B common stock have no preemptive rights and are not subject to further calls or assessment by us. There are no redemption or sinking fund provisions applicable to the Class B common stock. All outstanding shares of our Class B common stock are fully paid and non-assessable.

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#### Preferred Stock
Our Charter authorizes our board of directors, subject to any limitations prescribed by law, without further stockholder approval, to establish and to issue from time to time one or more series of preferred stock, par value $0.01 per share, up to an aggregate of 50,000,000 shares of preferred stock. Each series of preferred stock will relate to the number of shares and will have the designations, powers, preferences, privileges, rights, qualifications, limitations and restrictions determined by the board of directors, which may include, among others, dividend rights, liquidation preferences, voting rights, conversion rights, preemptive rights and redemption rights. Except as provided by law or in a preferred stock designation, the holders of preferred stock will not be entitled to vote at or receive notice of any meeting of stockholders. The holders of Class A common stock and Class B common stock will not be entitled to vote on any amendment to our Charter that relates solely to the terms of one or more outstanding series of preferred stock if the holders of such affected series are entitled, either separately or together with the holders of one or more other such series, to vote thereon pursuant to our Charter.

#### Anti-Takeover Effects of Provisions of Our Charter, our Bylaws and Delaware Law
Some provisions of our Charter, our Bylaws and Delaware law contain provisions that could make the following transactions more difficult: (i) acquisitions of us by means of a tender offer, proxy contest or otherwise or (ii) removal of our incumbent officers and directors. These provisions may also have the effect of preventing changes in our management. It is possible that these provisions could make it more difficult to accomplish or could deter transactions that stockholders may otherwise consider to be in their best interest or in our best interests, including transactions that might result in a premium over the market price for our shares.

These provisions, summarized below, are expected to discourage coercive takeover practices and inadequate takeover bids. These provisions are also designed to encourage persons seeking to acquire control of the board of directors or of our Class A common stock to first negotiate with us. We believe that the benefits of increased protection and our potential ability to negotiate with the proponent of an unfriendly or unsolicited proposal to acquire or restructure us outweigh the disadvantages of discouraging these proposals because, among other things, negotiation of these proposals could result in improved terms for our stockholders.

#### Delaware Law
In general, Section 203 of the Delaware General Corporation Law ("DGCL") provides that, subject to certain exceptions set forth therein, a Delaware corporation shall not engage in any business combinations with any interested stockholder for a period of three years following the date that the stockholder became an interested stockholder, unless:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the transaction is approved by the board of directors before the date the interested stockholder attained that status;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • upon consummation of the transaction that resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • on or after such time the business combination is approved by the board of directors and authorized at a meeting of stockholders by at least two-thirds of the outstanding voting stock that is not owned by the interested stockholder.

For purposes of Section 203 of the DGCL, a business combination is defined to include a merger or consolidation, asset sale or other transaction resulting in a financial benefit to the interested stockholder, and an interested stockholder is defined to include (i) any person that is the owner of 15% or more of the outstanding voting stock of the corporation, or is an affiliate or associate of the corporation and was the owner of 15% or more of the outstanding voting stock of the corporation at any time within three years immediately prior to the date of determination and (ii) the affiliates and associates of such person.

We have opted out of Section 203 of the DGCL. Our Charter contains, however, provisions that are similar to Section 203 of the DGCL (except with respect to certain of our owners prior to our initial offering,

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including SES Legacy Holdings, LLC, Crestview Partners II SES Investment, LLC, any funds, limited partnerships or other investment entities or vehicles managed by Crestview Advisors, L.L.C. or controlled by Crestview Partners II GP, L.P., B-29 Investments, LP, B-29 Investments LP, and certain other funds, limited partnerships, investment entities or vehicles and persons named in our Charter.

#### Charter and Bylaws
Provisions of our Charter and Bylaws may delay or discourage transactions involving an actual or potential change in control or change in our management, including transactions in which stockholders might otherwise receive a premium for their shares or transactions that our stockholders might otherwise deem to be in their best interests. Therefore, these provisions could adversely affect the price of our Class A common stock.

Among other things, our Charter and Bylaws:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • establish advance notice procedures with regard to stockholder proposals relating to the nomination of candidates for election as directors or new business to be brought before meetings of our stockholders. These procedures provide that notice of such stockholder proposals must be timely given in writing to our corporate secretary prior to the meeting at which the action is proposed to be taken. Generally, to be timely, notice must be received at our principal executive offices not less than 90 days nor more than 120 days prior to the first anniversary date of the annual meeting for the preceding year's annual meeting. Our amended and restated bylaws specify the requirements as to form and content of all stockholders' notices. These requirements may deter stockholders from bringing matters before the stockholders at an annual or special meeting;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • authorize our board of directors to issue undesignated preferred stock. This ability makes it possible for our board of directors to issue, without stockholder approval, preferred stock with voting or other rights or preferences that could impede the success of any attempt to change control of us. These and other provisions may have the effect of deferring hostile takeovers or delaying changes in control or management of our company;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provide that the authorized number of directors may be changed only by resolution of the board of directors;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provide that all vacancies, including newly created directorships, may, except as otherwise required by law or, if applicable, the rights of holders of a series of preferred stock, be filled by the affirmative vote of a majority of the total number of remaining authorized directors;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provide that, after the Legacy Group (as defined in the Charter) ceases to hold more than 35% of the outstanding shares of the Class A common stock, any action required or permitted to be taken by the stockholders must be effected at a duly called annual or special meeting of stockholders and may not be effected by any consent in writing in lieu of a meeting of such stockholders, subject to the rights of the holders of any series of preferred stock with respect to such series;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provide that our Bylaws may be amended by the affirmative vote of the holders of at least a two-thirds of our then-outstanding Class A common stock;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provide that special meetings of our stockholders may only be called by a majority of the total number of authorized directors; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provide that our Bylaws can be amended by unilateral action of a majority of the entire board of directors.

#### Forum Selection
Our Charter provides that unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware will, to the fullest extent permitted by applicable law, be the sole and exclusive forum for:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any derivative action or proceeding brought on our behalf;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers, employees or agents to us or our stockholders;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any action asserting a claim against us or any director or officer or other employee or agent of ours arising pursuant to any provision of the DGCL, our Charter or Bylaws; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any action asserting a claim against us or any director or officer or other employee or agent of ours that is governed by the internal affairs doctrine;

in each such case subject to such Court of Chancery having personal jurisdiction over the indispensable parties named as defendants therein.

Our Charter also provides that any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock will be deemed to have notice of, and to have consented to, this forum selection provision. Although we believe these provisions benefit us by providing increased consistency in the application of Delaware law for the specified types of actions and proceedings, the provisions may have the effect of discouraging lawsuits against our directors, officers, employees and agents. The enforceability of similar exclusive forum provisions in other companies' certificates of incorporation has been challenged in legal proceedings, and it is possible that, in connection with one or more actions or proceedings described above, a court could rule that this provision in our existing Charter is inapplicable or unenforceable.

#### Transfer Agent and Registrar
The transfer agent and registrar for our Class A common stock is Broadridge Corporate Issuer Solutions, Inc.

#### Listing
We list our Class A common stock on both the NYSE and the NYSE Texas under the symbol "WTTR."

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#### DESCRIPTION OF DEPOSITARY SHARES
We may offer depositary shares (either separately or together with other securities) representing fractional interests in our preferred stock of any series. In connection with the issuance of any depositary shares, we will enter into a deposit agreement with a bank or trust company, as depositary, which will be named in the applicable prospectus supplement. Depositary shares will be evidenced by depositary receipts issued pursuant to the related deposit agreement. Immediately following our issuance of the preferred stock related to the depositary shares, we will deposit the preferred stock with the relevant preferred stock depositary and will cause the preferred stock depositary to issue, on our behalf, the related depositary receipts. Subject to the terms of the deposit agreement, each owner of a depositary receipt will be entitled, in proportion to the fraction of a share of preferred stock represented by the related depositary share, to all the rights, preferences and privileges of, and will be subject to all of the limitations and restrictions on, the preferred stock represented by the depositary receipt (including, if applicable, dividend, voting, conversion, exchange redemption and liquidation rights).

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#### DESCRIPTION OF WARRANTS
We may issue warrants for the purchase of our Class A common stock, preferred stock or any combination of the foregoing securities thereof. Warrants may be issued independently or together with our securities offered by any prospectus supplement and may be attached to or separate from any such offered securities. Each series of warrants will be issued under a separate warrant agreement to be entered into between us and a bank or trust company, as warrant agent, all as set forth in the prospectus supplement relating to the particular issue of warrants. The warrant agent will act solely as our agent in connection with the warrants and will not assume any obligation or relationship of agency or trust for or with any holders of warrants or beneficial owners of warrants. The following summary of certain provisions of the warrants does not purport to be complete and is subject to, and is qualified in its entirety by reference to, all provisions of the warrant agreements.

You should refer to the prospectus supplement relating to a particular issue of warrants for the terms of and information relating to the warrants, including, where applicable:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the number of securities purchasable upon exercise of the warrants and the price at which such securities may be purchased upon exercise of the warrants;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date on which the right to exercise the warrants commences and the date on which such right expires (the "Expiration Date");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the United States federal income tax consequences applicable to the warrants;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the amount of the warrants outstanding as of the most recent practicable date; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other terms of the warrants.

Warrants will be offered and exercisable for United States dollars only. Warrants will be issued in registered form only. Each warrant will entitle its holder to purchase such number of securities at such exercise price as is in each case set forth in, or calculable from, the prospectus supplement relating to the warrants. The exercise price may be subject to adjustment upon the occurrence of events described in such prospectus supplement. After the close of business on the Expiration Date (or such later date to which we may extend such Expiration Date), unexercised warrants will become void. The place or places where, and the manner in which, warrants may be exercised will be specified in the prospectus supplement relating to such warrants.

Prior to the exercise of any warrants, holders of the warrants will not have any of the rights of holders of securities, including the right to receive payments of any dividends on the securities purchasable upon exercise of the warrants, or to exercise any applicable right to vote.

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#### PLAN OF DISTRIBUTION
We may use one or more of the following methods when selling securities under this prospectus:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • underwritten transactions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • privately negotiated transactions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • exchange distributions and/or secondary distributions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • sales in the over-the-counter market;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • ordinary brokerage transactions and transactions in which the broker solicits purchasers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a block trade (which may involve crosses) in which the broker or dealer so engaged will attempt to sell the securities as agent but may position and resell a portion of the block as principal to facilitate the transaction;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • purchases by a broker or dealer as principal and resale by such broker or dealer for its own account pursuant to this prospectus;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • short sales and delivery of our securities to close out short positions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • sales by broker-dealers of our securities that are loaned or pledged to such broker-dealers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • "at-the-market" offerings into an existing trading market in accordance with Rule 415(a)(4) under the Securities Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a combination of any such methods of sale; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other method permitted pursuant to applicable law.

In addition, we may from time to time sell securities in compliance with Rule 144 under the Securities Act, if available, or pursuant to other available exemptions from the registration requirements under the Securities Act, rather than pursuant to this prospectus. In such event, we may be required by the securities laws of certain states to offer and sell the securities only through registered or licensed brokers or dealers.

We may prepare prospectus supplements that will disclose the terms of the offering, including the name or names of any underwriters, dealers or agents, the purchase price of the securities, any underwriting discounts and other items constituting compensation to underwriters, dealers or agents.

We may fix a price or prices of our securities at:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a fixed price or prices (which may be changed);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • market prices prevailing at the time of any sale under this registration statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • prices related to market prices; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • negotiated prices.

We may change the price of the securities offered from time to time.

If we use underwriters in an offering, we will execute an underwriting agreement with such underwriters and will specify the name of each underwriter and the terms of the transaction (including any underwriting discounts and other terms constituting compensation of the underwriters and any dealers) in a prospectus supplement. If we use an underwriting syndicate, the managing underwriter(s) will be specified on the cover of the prospectus supplement. If we use underwriters for a sale of securities, the underwriters will acquire the securities for their own accounts. The underwriters may resell the securities from time to time in one or more transactions, including negotiated transactions, at a fixed public offering price or at varying prices determined at the time of sale. Any public offering price and any discounts or concessions allowed or reallowed or paid to dealers may be changed from time to time. Unless otherwise set forth in the prospectus supplement, the obligations of the underwriters to purchase the offered securities will be subject to conditions precedent and the underwriters will be obligated to purchase all of the offered securities if any are purchased.

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If dealers are used in an offering, we may sell the securities to the dealers as principals. The dealers then may resell the securities to the public at varying prices which they determine at the time of resale. The names of the dealers and the terms of the transaction will be specified in a prospectus supplement.

If agents are used in an offering, the names of the agents and the terms of the agency will be specified in a prospectus supplement. Unless otherwise indicated in a prospectus supplement, the agents will act on a best-efforts basis for the period of their appointment.

Dealers and agents named in a prospectus supplement may be underwriters as defined in the Securities Act and any discounts or commissions they receive from us and any profit on their resale of the securities may be treated as underwriting discounts and commissions under the Securities Act. We will identify in the applicable prospectus supplement any underwriters, dealers or agents and will describe their compensation. We may enter into agreements with the underwriters, dealers providing for contribution to payments such parties may be required to make in respect of such liabilities. Any underwriting agreement we enter into in connection with an offering of securities will provide that the obligations of the underwriters to purchase the securities will be subject to certain conditions precedent, including the absence of any material adverse change in our business and the receipt of certain certificates, opinions and letters from us, our counsel and our independent registered public accounting firm. The underwriters may engage in over-allotment, stabilizing transactions, short covering transactions and penalty bids in accordance with Regulation M under the Exchange Act.

Underwriters, dealers or agents and their associates may engage in other transactions with and perform other services for us in the ordinary course of business.

If so indicated in a prospectus supplement, we will authorize underwriters or other persons acting as our agents to solicit offers by institutional investors to purchase securities pursuant to contracts providing for payment and delivery on a future date. We may enter contracts with commercial and savings banks, insurance companies, pension funds, investment companies, educational and charitable institutions and other institutional investors. The obligations of any institutional investor will be subject to the condition that its purchase of the offered securities will not be illegal at the time of delivery. The underwriters and other agents will not be responsible for the validity or performance of contracts.

In addition, we may enter into derivative transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated transactions. If the applicable prospectus supplement so indicates, in connection with those derivatives, the third parties may sell securities covered by this prospectus and the applicable prospectus supplement, including in short sale transactions. If so, the third party may use securities pledged by us or borrowed from us or others to settle those sales or to close out any related open borrowings of stock, and may use securities received from us in settlement of those derivatives to close out any related open borrowings of stock. The third party in such sale transactions will be an underwriter and, if not identified in this prospectus, will be named in the applicable prospectus supplement (or a post-effective amendment).

In addition, we may otherwise loan or pledge securities to a financial institution or other third party that in turn may sell the securities short using this prospectus and an applicable prospectus supplement. Such financial institution or other third party may transfer its economic short position to investors in our securities or in connection with a concurrent offering of other securities.

The specific terms of any lock-up provisions in respect of any given offering will be described in any applicable prospectus supplement. Such lock-up provisions may restrict us, our executive officers, directors, and certain stockholders from selling or otherwise disposing of shares of our Class A common stock or securities convertible into or exercisable for our Class A common stock for a specified period following the offering. Any underwriter acting as lead manager of an offering may, in its sole discretion and without notice, release all or any portion of the securities subject to such lock-up agreements at any time.

To the extent required, this prospectus may be amended or supplemented from time to time to describe a specific plan of distribution.

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#### CERTAIN ERISA CONSIDERATIONS
The following is a summary of certain considerations associated with the acquisition and holding of the securities by (a) employee benefit plans that are subject to Title I of the Employee Retirement Income Security Act of 1974, as amended ("ERISA"), (b) plans, individual retirement accounts and other arrangements that are subject to Section 4975 of the Internal Revenue Code of 1986, as amended (the "Code") or employee benefit plans that are governmental plans (as defined in Section 3(32) of ERISA), certain church plans (as defined in Section 3(33) of ERISA), non-U.S. plans (as described in Section 4(b)(4) of ERISA) or other plans that are not subject to the foregoing but may be subject to provisions under any other federal, state, local, non-U.S. or other laws or regulations that are similar to such provisions of ERISA or the Code (collectively, "Similar Laws"), and (c) entities whose underlying assets are considered to include "plan assets" (within the meaning of ERISA) of any such plan, account or arrangement by reason of a plan's investment in such entities (each of (a), (b) and (c), a "Plan").

This summary is based on the provisions of ERISA and the Code (and related regulations and administrative and judicial interpretations) as of the date of this prospectus supplement. This summary does not purport to be complete, and no assurance can be given that future legislation, court decisions, regulations, rulings or pronouncements will not significantly modify the requirements summarized below. Any of these changes may be retroactive and may thereby apply to transactions entered into prior to the date of their enactment or release. This discussion is general in nature and is not intended to be all inclusive, nor should it be construed as investment or legal advice.

#### General Fiduciary Matters
ERISA and the Code impose certain duties on persons who are fiduciaries of a Plan subject to Title I of ERISA or Section 4975 of the Code (an "ERISA Plan") and prohibit certain transactions involving the assets of an ERISA Plan and its fiduciaries or other interested parties. Under ERISA and the Code, any person who exercises any discretionary authority or control over the administration of an ERISA Plan or the management or disposition of the assets of an ERISA Plan, or who renders investment advice for a fee or other compensation to an ERISA Plan, is generally considered to be a fiduciary of the ERISA Plan (within the meaning of Section 3(21) of ERISA).

In considering an investment in the securities with a portion of the assets of any Plan, a fiduciary should consider the Plan's particular circumstances and all of the facts and circumstances of the investment and determine whether the acquisition and holding of the securities is in accordance with the documents and instruments governing the Plan and the applicable provisions of ERISA, the Code, or any Similar Law relating to the fiduciary's duties to the Plan, including, without limitation:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the investment is prudent under Section 404(a)(1)(B) of ERISA and any other applicable Similar Laws;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether, in making the investment, the ERISA Plan will satisfy the diversification requirements of Section 404(a)(1)(C) of ERISA and any other applicable Similar Laws;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the investment is permitted under the terms of the applicable documents governing the Plan;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the acquisition or holding of the securities will constitute a "prohibited transaction" under Section 406 of ERISA or Section 4975 of the Code (please see discussion under "— Prohibited Transaction Issues" below); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the Plan will be considered to hold, as plan assets, (i) only the securities or (ii) an undivided interest in our underlying assets (please see the discussion under "— Plan Asset Issues" below).

#### Prohibited Transaction Issues
Section 406 of ERISA and Section 4975 of the Code prohibit ERISA Plans from engaging in specified transactions involving plan assets with persons or entities who are "parties in interest," within the meaning of ERISA, or "disqualified persons," within the meaning of Section 4975 of the Code, unless an exemption is available. A party in interest or disqualified person who engages in a non-exempt prohibited transaction

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may be subject to excise taxes and other penalties and liabilities under ERISA and the Code. In addition, the fiduciary of the ERISA Plan that engages in such a non-exempt prohibited transaction may be subject to excise taxes, penalties and liabilities under ERISA and the Code. The acquisition and/or holding of the securities by an ERISA Plan with respect to which the issuer, the initial purchaser, or a guarantor is considered a party in interest or a disqualified person may constitute or result in a direct or indirect prohibited transaction under Section 406 of ERISA and/or Section 4975 of the Code, unless the investment is acquired and is held in accordance with an applicable statutory, class or individual prohibited transaction exemption.

Because of the foregoing, the securities should not be acquired or held by any person investing "plan assets" of any Plan, unless such acquisition and holding will not constitute a non-exempt prohibited transaction under ERISA and the Code or a similar violation of any applicable Similar Laws.

#### Plan Asset Issues
Additionally, a fiduciary of a Plan should consider whether the Plan will, by investing in us, be deemed to own an undivided interest in our assets, with the result that we would become a fiduciary of the Plan and our operations would be subject to the regulatory restrictions of ERISA, including its prohibited transaction rules, as well as the prohibited transaction rules of the Code and any similar rules under other applicable Similar Laws.

The Department of Labor (the "DOL") regulations provide guidance with respect to whether the assets of an entity in which ERISA Plans acquire equity interests would be deemed "plan assets" under some circumstances. Under these regulations, an entity's assets generally would not be considered to be "plan assets" if, among other things:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (a) the equity interests acquired by ERISA Plans are "publicly-offered securities" (as defined in the DOL regulations) — i.e., the equity interests are part of a class of securities that is widely held by 100 or more investors independent of the issuer and each other, are freely transferable, and are either registered under certain provisions of the federal securities laws or sold to the ERISA Plan as part of a public offering under certain conditions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (b) the entity is an "operating company" (as defined in the DOL regulations) — i.e., it is primarily engaged in the production or sale of a product or service, other than the investment of capital, either directly or through a majority-owned subsidiary or subsidiaries; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (c) there is no significant investment by "benefit plan investors" (as defined in the DOL regulations) — i.e., immediately after the most recent acquisition by an ERISA Plan of any equity interest in the entity, less than 25% of the total value of each class of equity interest (disregarding certain interests held by persons (other than benefit plan investors) with discretionary authority or control over the assets of the entity or who provide investment advice for a fee (direct or indirect) with respect to such assets, and any affiliates thereof) is held by ERISA Plans, IRAs and certain other Plans (but not including governmental plans, foreign plans and certain church plans), and entities whose underlying assets are deemed to include plan assets by reason of a Plan's investment in the entity.

Due to the complexity of these rules and the excise taxes, penalties and liabilities that may be imposed upon persons involved in non-exempt prohibited transactions, it is particularly important that fiduciaries, or other persons considering acquiring and/or holding the securities on behalf of, or with the assets of, any Plan, consult with their counsel regarding the potential applicability of ERISA, Section 4975 of the Code and any Similar Laws to such investment and whether an exemption would be applicable to the acquisition and holding of the securities. Purchasers of the securities have the exclusive responsibility for ensuring that their acquisition and holding of the securities complies with the fiduciary responsibility rules of ERISA and does not violate the prohibited transaction rules of ERISA or the Code or constitute a similar violation under any applicable Similar Laws. The sale of the securities to a Plan is in no respect a representation by us or any of our affiliates or representatives that such an investment meets all relevant legal requirements with respect to investments by any such Plan or that such investment is appropriate for any such Plan.

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#### LEGAL MATTERS
Vinson & Elkins L.L.P. will pass upon the validity of the shares and certain legal matters relating to the issuance and sale of the securities offered hereby on behalf of Select Water Solutions, Inc. Additional legal matters may be passed upon for us or any underwriters or agents, by counsel that we will name in the applicable prospectus supplement.

#### EXPERTS
The audited financial statements and management's assessment of the effectiveness of internal control over financial reporting incorporated by reference in this prospectus and elsewhere in the registration statement have been incorporated by reference in reliance upon the reports of Grant Thornton LLP, independent registered public accountants, upon authority of said firm as experts in accounting and auditing.

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### $175,000,000
![[MISSING IMAGE: lg_select-pn.jpg]](lg_select-pn.jpg)

### Class A Common Stock

### P ROSPECTUS SUPPLEMENT

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| **J.P. MORGAN** | **BofA SECURITIES**  |

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, 2026

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