# EDGAR Filing Document

**Accession Number:** 0002048763
**File Stem:** 0001193125-26-144048
**Filing Date:** 2026-4
**Character Count:** 24662
**Document Hash:** 0845b3bbeee5706da6948af34331e217
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-144048.hdr.sgml**: 20260406

**ACCESSION NUMBER**: 0001193125-26-144048

**CONFORMED SUBMISSION TYPE**: 4/A

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260323

**FILED AS OF DATE**: 20260406

**DATE AS OF CHANGE**: 20260406

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Partners III LP
- **CENTRAL INDEX KEY:** 0001618169

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** D0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842278

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 W. ALABAMA STREET
- **STREET 2:** SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 713-933-7222

**MAIL ADDRESS:**
- **STREET 1:** 2415 W. ALABAMA STREET
- **STREET 2:** SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Estis Co-Invest II LLC
- **CENTRAL INDEX KEY:** 0001986070

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842281

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA STREET, SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 1 713 993 7370

**MAIL ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA STREET, SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Group B Ltd
- **CENTRAL INDEX KEY:** 0002050986

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842283

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 7134898201

**MAIL ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Fairbanks Jonathan B.
- **CENTRAL INDEX KEY:** 0002048763

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842285

**MAIL ADDRESS:**
- **STREET 1:** 1300 POST OAK BLVD.
- **STREET 2:** SUITE 450
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77056
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Capital Group III-B LP
- **CENTRAL INDEX KEY:** 0002052262

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842282

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 W ALABAMA ST STE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 7132087879

**MAIL ADDRESS:**
- **STREET 1:** 2415 W ALABAMA ST STE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Advisors LLC
- **CENTRAL INDEX KEY:** 0002051005

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842284

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 7134898201

**MAIL ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Group Ltd
- **CENTRAL INDEX KEY:** 0002051007

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842280

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 7134898201

**MAIL ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Partners III B LP
- **CENTRAL INDEX KEY:** 0002051019

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842277

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 7134898201

**MAIL ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** GEC Capital Group III LP
- **CENTRAL INDEX KEY:** 0002051026

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42477
- **FILM NUMBER:** 26842279

**BUSINESS ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
- **BUSINESS PHONE:** 7134898201

**MAIL ADDRESS:**
- **STREET 1:** 2415 WEST ALABAMA SUITE 220
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77098
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Flowco Holdings Inc.
- **CENTRAL INDEX KEY:** 0002035149
- **STANDARD INDUSTRIAL CLASSIFICATION:** OIL & GAS FILED MACHINERY & EQUIPMENT [3533]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 994382473
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 10370 RICHMOND AVE.
- **STREET 2:** SUITE 1325
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77042
- **BUSINESS PHONE:** 7139937222

**MAIL ADDRESS:**
- **STREET 1:** 10370 RICHMOND AVE.
- **STREET 2:** SUITE 1325
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77042

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4/A

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Fairbanks Jonathan B.<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Advisors LLC<br><sub>(Last) (First) (Middle)</sub><br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Group B Ltd<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Capital Group III-B LP<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Estis Co-Invest II LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Group Ltd<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Capital Group III LP<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Partners III LP<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>GEC Partners III B LP<br><sub>(Last) (First) (Middle)</sub><br>C/O GEC ADVISORS LLC<br>2415 WEST ALABAMA STREET, SUITE 220<br><sub>(Street)</sub><br>HOUSTON, TX 77098<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Flowco Holdings Inc. [ FLOC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 2026-03-26 |  | M |  | 1682406 | A | <sup>(1)(2)</sup> | 1682406 | I | By GEC Partners III-B LP<sup>(3)(4)</sup> |
| Class A Common Stock | 2026-03-26 |  | M |  | 1907855 | A | <sup>(1)(2)</sup> | 1907855 | I | By GEC Partners III LP<sup>(3)(5)</sup> |
| Class A Common Stock | 2026-03-26 |  | M |  | 4031250 | A | <sup>(1)(2)</sup> | 4031250 | I | By GEC Estis Co-Invest II LLC<sup>(3)(6)</sup> |
| Class A Common Stock | 2026-03-26 |  | S |  | 1682406 | D | $21.175 | 0 | I | By GEC Partners III-B LP<sup>(3)(4)</sup> |
| Class A Common Stock | 2026-03-26 |  | S |  | 1907855 | D | $21.175 | 0 | I | By GEC Partners III LP<sup>(3)(5)</sup> |
| Class A Common Stock | 2026-03-26 |  | S |  | 4031250 | D | $21.175 | 0 | I | By GEC Estis Co-Invest II LLC<sup>(3)(6)</sup> |
| Class A Common Stock | 2026-03-26 |  | S |  | 94694 | D | $21.175 | 366103 | I | By GEC Partners III GI LP<sup>(3)</sup> |
| Class A Common Stock | 2026-03-26 |  | S |  | 83795 | D | $21.175 | 323965 | I | By GEC Partners III-B GI LP<sup>(3)</sup> |
| Class A common stock |  |  |  |  |  |  |  | 15625 | D |  |
| Class A common stock |  |  |  |  |  |  |  | 500 | I | By Child |
| Class A common stock |  |  |  |  |  |  |  | 500 | I | By Child |
| Class A common stock |  |  |  |  |  |  |  | 500 | I | By Child |
| Class A common stock |  |  |  |  |  |  |  | 500 | I | By Child |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| LLC Interests | <sup>(1)(2)</sup> | 2026-03-26 |  | M |  |  | 1682406 | <sup>(1)(2)</sup> | <sup>(1)(2)</sup> | Class A Common Stock | 1682406 | $0 | 6504398 | I | By GEC Partners III-B LP<sup>(3)(4)</sup> |
| LLC Interests | <sup>(1)(2)</sup> | 2026-03-26 |  | M |  |  | 1907855 | <sup>(1)(2)</sup> | <sup>(1)(2)</sup> | Class A Common Stock | 1907855 | $0 | 7376013 | I | By GEC Partners III LP<sup>(3)(5)</sup> |
| LLC Interests | <sup>(1)(2)</sup> | 2026-03-26 |  | M |  |  | 4031250 | <sup>(1)(2)</sup> | <sup>(1)(2)</sup> | Class A Common Stock | 4031250 | $0 | 15585309 | I | By GEC Estis Co-Invest II LLC<sup>(3)(6)</sup> |

---

### Footnotes:

(1) Represents Common Units (the "Common Units") of Flowco MergeCo LLC ("Flowco MergeCo"). Each Common Unit is paired with one share of Class B common stock of the Issuer ("Class B Common Stock", and together with the paired Common Unit, the "Paired Interest"). Pursuant to a Second Amended and Restated Limited Liability Company Agreement of Flowco MergeCo, dated as of January 17, 2025 (the "Restated LLC Agreement"), each Paired Interest is exchangeable into one share of Class A Common Stock ("Class A Common Stock") of the Issuer (or at the Issuer's election, cash based on the redemption rate set forth in the Restated LLC Agreement and the value of the Class A Common Stock at the time of the exchange), subject to the terms of the Restated LLC Agreement. [continues in footnote 2]

(2) [continued from footnote 1] Upon an exchange of the Paired Interests for Class A Common Stock, the corresponding number of shares of Class B Common Stock, which entitle its holder to one vote per share on all matters presented to the Issuer's stockholders, generally will be cancelled.

(3) GEC Capital Group III LP is the general partner of each of GEC Partners III LP and GEC Partners III-GI LP, and GEC Group Ltd. is the general partner of GEC Capital Group III LP. GEC Capital Group III-B LP is the managing member or general partner of each of GEC Estis Co-Invest II LLC and GEC Partners III-B LP, and GEC Group B Ltd. is the general partner of GEC Capital Group III-B LP. Mr. Fairbanks is the manager and controlling member of GEC, GEC Group Ltd. and GEC Group B. Ltd, as well as GEC Advisors LLC, a registered investment advisor to the funds that beneficially own such shares, with discretionary authority over each such fund's accounts. Each of Mr. Fairbanks, GEC Advisors LLC, GEC Capital Group III LP and GEC Group B Ltd. disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein.

(4) These securities are held directly by GEC Partners III-B LP. Each of Mr. Fairbanks, GEC Advisors LLC, GEC Group B Ltd. and GEC Capital Group III-B LP disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein.

(5) These securities are held directly by GEC Partners III LP. Each of Mr. Fairbanks, GEC Advisors LLC, GEC Group Ltd. and GEC Capital Group III LP disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein.

(6) These securities are held directly by GEC Estis Co-Invest II LLC. Each of Mr. Fairbanks, GEC Advisors LLC, GEC Group B Ltd. and GEC Capital Group III-B LP disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein.

**Remarks:**
This amendment is being filed solely to include GEC Advisors LLC, GEC Group B Ltd., GEC Capital Group III-B LP, GEC Group Ltd., GEC Capital Group III LP, GEC Partners III-B LP, GEC Partners III LP and GEC Estis Co-Invest II LLC as official Reporting Persons following the reactivation of their EDGAR accounts as explained in Footnote 5 of the initial filing. In connection with the Master Reorganization Agreement, the Reporting Persons entered into a Stockholders Agreement with certain other stockholders of the Issuer, pursuant to which, among other matters, they agreed to vote in favor of each others' director nominees. As a result, certain Reporting Persons may be deemed to be members of a "group," as such term is defined in Section 13(d)(3) of the Act and Rule 13d-5 thereunder, with such other stockholders of the Issuer. Collectively, such "group" may be deemed to beneficially own in the aggregate more than 50% of the shares of the Issuer's Class A Common Stock. Accordingly, the Reporting Persons are filing this Form 4 in part by virtue of their deemed membership in such "group." Each of GEC Advisors LLC, GEC Group B Ltd., GEC Capital Group III-B LP, GEC Group Ltd., GEC Capital Group III LP, GEC Partners III-B LP, GEC Partners III LP and GEC Estis Co-Invest II LLC may be deemed to be a director by deputization by virtue of the right the GEC parties to the Stockholders Agreement and their affiliates to designate two members of the Issuer's board of directors pursuant to the Stockholders Agreement. However, each of the Reporting Persons disclaims any pecuniary interest in the shares of Class A Common Stock owned directly by such other stockholders, and such shares are not reflected in the tables herein.

**Signature:** Joel Lambert, attorney-in-fact  
**Date:** 2026-04-06

**Signature:** GEC Advisors LLC By: /s/ Jonathan B. Fairbanks, Managing Director  
**Date:** 2026-04-06

**Signature:** GEC Group B Ltd. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

**Signature:** GEC Capital Group III-B LP. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

**Signature:** GEC Estis Co-Invest II LLC. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

**Signature:** GEC Group Ltd. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

**Signature:** GEC Capital Group III LP. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

**Signature:** GEC Partners III LP. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

**Signature:** GEC Partners III-B LP. By: /s/ Jonathan B. Fairbanks, Director  
**Date:** 2026-04-06

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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