SOLV Energy (MWH) 10% shareholder plans stock sale into market

Rhea-AI Filing Summary

SOLV Energy, Inc. (MWH) received a notice that ASP Endeavor Investco plans to sell 798,412 shares of Class A common stock under Rule 144 through broker Citadel Securities, LLC. The shares have an aggregate market value of $22,171,901.24, with 131,056,519 shares of Class A common stock outstanding as of the notice date.

The seller previously acquired these shares from the issuer or in exchange for common units of SOLV Energy Holdings LLC. ASP Endeavor Investco also sold smaller blocks of stock in June 2026 in a registered secondary offering, which are excluded from the Rule 144 volume calculation.

Key Figures

Shares to be sold under Rule 144: 798,412 shares Aggregate market value of shares to be sold: $22,171,901.24 Shares outstanding: 131,056,519 shares +4 more

7 metrics

Shares to be sold under Rule 144 798,412 shares Planned sale of Class A common stock by ASP Endeavor Investco

Aggregate market value of shares to be sold $22,171,901.24 Value of 798,412 Class A shares covered by the Rule 144 notice

Shares outstanding 131,056,519 shares Class A common stock outstanding for SOLV Energy, Inc.

Shares sold June 1, 2026 4,379 shares Registered secondary offering by ASP Endeavor Investco

Proceeds from June 1, 2026 sale $157,644.00 Registered secondary offering transaction value

Shares sold June 4, 2026 657 shares Registered secondary offering by ASP Endeavor Investco

Proceeds from June 4, 2026 sale $23,652.00 Registered secondary offering transaction value

Key Terms

Rule 144, registered secondary offering, aggregate market value, 10% Stockholder, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

registered secondary offering financial

"were sold in a registered secondary offering and are not included"

aggregate market value financial

"798412 | 22171901.24 | 131056519 | 08/19/2026 | NASDAQ"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

10% Stockholder regulatory

"10% Stockholder 144: Securities Information"

common units financial

"Common units of SOLV Energy Holdings LLC were acquired prior to"

Common units are the basic ownership stakes in a company, limited partnership, or trust that function like common stock: they give holders a claim on profits and often voting rights. Think of them as the ordinary seats at a table—the most directly affected by the business’s success or failure, so they typically offer higher upside but carry greater risk than preferred claims or creditors, which matters to investors evaluating potential return and safety.

FAQ

What stock sale is ASP Endeavor Investco planning for SOLV Energy, Inc. (MWH)?

ASP Endeavor Investco plans to sell 798,412 shares of SOLV Energy, Inc. Class A common stock under Rule 144. The filing lists an aggregate market value of $22,171,901.24 for these shares, to be executed through Citadel Securities, LLC.

How many SOLV Energy, Inc. (MWH) shares are outstanding according to this Form 144?

The notice reports 131,056,519 shares of SOLV Energy, Inc. Class A common stock outstanding. This figure provides context for the planned Rule 144 sale of 798,412 shares by ASP Endeavor Investco, a 10% stockholder.

What is the reported market value of the SOLV Energy (MWH) shares to be sold?

The planned Rule 144 sale covers shares with an aggregate market value of $22,171,901.24. This value corresponds to the 798,412 shares of SOLV Energy, Inc. Class A common stock that ASP Endeavor Investco intends to sell through Citadel Securities, LLC.

How and when did ASP Endeavor Investco acquire the SOLV Energy (MWH) shares?

The filing states the shares were acquired on 02/10/2026, either directly from the issuer or by exchanging common units of SOLV Energy Holdings LLC for Class A shares on a one-for-one basis, all prior to the company’s IPO.

What SOLV Energy (MWH) stock sales has ASP Endeavor Investco made in the past three months?

ASP Endeavor Investco sold 4,379 shares for $157,644.00 on June 1, 2026 and 657 shares for $23,652.00 on June 4, 2026. These were in a registered secondary offering and are excluded from Rule 144 limits.

What is the significance of Rule 144 for SOLV Energy, Inc. (MWH) in this filing?

Rule 144 governs the resale of restricted or control securities. The notice indicates ASP Endeavor Investco, a 10% stockholder, is using this rule to resell 798,412 restricted shares of SOLV Energy, Inc. Class A common stock into the public market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/19/2026 - 08:39 PM Accepted by SEC EDGAR 08/19/2026 - 08:38 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002109987
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SOLV Energy, Inc.
SEC File Number	001-43117
Address of Issuer	16680 West Bernardo Drive San Diego CALIFORNIA 92127
Phone	(858)-251-4888
Name of Person for Whose Account the Securities are To Be Sold	ASP Endeavor Investco LP
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	10% Stockholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A common stock	Citadel Securities, LLC 830 Brickell Plaza Miami FL 33131	798412	22171901.24	131056519	08/19/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A common stock	02/10/2026	Shares of Class A common stock were acquired prior to the Issuer's IPO.	Issuer			2770	02/10/2026	N/A
Class A common stock	02/10/2026	Common units of SOLV Energy Holdings LLC were acquired prior to the Issuer's IPO. Shares of Class A common stock of the Issuer were issued on a one-for-one basis in exchange for these common units.	Issuer			795642	02/10/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
ASP Endeavor Investco LP 590 Madison Avenue New York NY 10022	Class A common stock	06/04/2026	657	23652.00
ASP Endeavor Investco LP 590 Madison Avenue New York NY 10022	Class A common stock	06/01/2026	4379	157644.00

144: Remarks and Signature

Remarks	The shares sold on June 1, 2026 and June 4, 2026 were sold in a registered secondary offering and are not included in the determination of the amount permitted to be sold under Rule 144.
Date of Notice	08/19/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Kevin Penn
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)