As filed with the Securities and Exchange Commission on November 5, 2026.

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Flowco Holdings Inc.

(Exact name of registrant as specified in its charter)

1300 Post Oak Blvd., Suite 450

Houston, Texas 77056

(713) 997-4877

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

FLOWCO HOLDINGS INC. 2025 EQUITY AND INCENTIVE PLAN

(Full title of the plan)

Joseph R. Edwards

President and Chief Executive Officer

1300 Post Oak Blvd., Suite 450

Houston, Texas 77056

(713) 997-4877

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

Explanatory Note

This Registration Statement on Form S-8 is being filed by Flowco Holdings Inc. (the “Registrant”) to register an additional 581,839 shares of the Registrant’s Class A common stock (the “Common Stock”) under the Registrant’s 2025 Equity and Incentive Plan (the “Plan”), which provides for an annual increase of up to 2% of Common Stock. Under the Plan, which was approved by stockholders of the Registrant on January 15, 2025, there were initially 6,000,000 shares of Common Stock authorized. All of such shares were registered on the Registrant’s Form S-8, File No. 333-284347 (the “Prior Registration Statement”) on January 17, 2025. The Prior Registration Statement is currently effective. This Registration Statement relates to the securities of the same class as those to which the Prior Registration Statement relates and is submitted in accordance with General Instruction E of Form S-8 regarding Registration of Additional Securities. Pursuant to General Instruction E of Form S-8, the contents of the Prior Registration Statement are incorporated herein by reference and made part of this Registration Statement, except as amended hereby.

PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

The following documents filed with the SEC by the Registrant are hereby incorporated herein by reference:

All documents that the Registrant subsequently files pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act after the date hereof (except for any portions of the Registrant’s Current Reports on Form 8-K furnished pursuant to Item 2.02 or Item 7.01 thereof and any corresponding exhibits thereto not filed with the SEC) and prior to the filing of a post-effective amendment hereto indicating that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be a part hereof from the date of filing of such documents.

Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes hereof 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 herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

Item 8. Exhibits.

The following exhibits are filed as part of this Registration Statement: