[144] NATURAL GAS SERVICES GROUP INC SEC Filing

Rhea-AI Filing Summary

Natural Gas Services Group, Inc. (NGS) insider Stephen Taylor has filed a Form 144 notice to sell 10,000 shares of common stock through RBC Capital Markets LLC on or about 11/20/2025 on the NYSE, with an aggregate market value of 313,787.00. Shares outstanding were 12,542,314 at the time referenced.

The 10,000 shares to be sold were acquired on 01/06/2022 via an RSU vest from the issuer. The filing also lists multiple prior sales of Natural Gas Services Group, Inc. stock over the past three months, including 20,000 shares sold on 08/22/2025 for gross proceeds of 525,060.00 and 18,748 shares sold on 11/10/2025 for 558,095.00.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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
COMMON	RBC CAPITAL MARKETS LLC 250 NICOLLET MALL, SUITE 1700 MINNEAPOLIS MN 55401	10000	313787.00	12542314	11/20/2025	NYSE

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 *
COMMON	01/06/2022	RSU VEST	ISSUER			10000	01/06/2022	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
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	11/19/2025	10000	303100.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	11/17/2025	10000	310069.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	11/10/2025	18748	558095.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	11/07/2025	11152	324051.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	11/06/2025	100	2900.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/26/2025	7915	225591.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/25/2025	759	21631.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/24/2025	1326	37791.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/23/2025	11457	320214.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/19/2025	63	1732.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/18/2025	1638	45045.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/17/2025	6553	180252.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/16/2025	289	7947.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	09/04/2025	10000	270018.00
STEPHEN TAYLOR C/O RBC CAPITAL MARKETS LLC 250 NICOLLET MALL MINNEAPOLIS MN 55401	NATURAL GAS SERVICES GROUP INC	08/22/2025	20000	525060.00

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the NGS Form 144 filing disclose?

The Form 144 filing discloses that Stephen Taylor intends to sell 10,000 shares of Natural Gas Services Group, Inc. (NGS) common stock through RBC Capital Markets LLC on or about 11/20/2025 on the NYSE, with an aggregate market value of 313,787.00.

How many NGS shares are planned to be sold and how were they acquired?

The filing shows a planned sale of 10,000 common shares. These shares were acquired on 01/06/2022 via an RSU vest from the issuer, with the amount of securities acquired listed as 10,000 and the date of payment also shown as 01/06/2022.

What is the reported market value and share count context for the NGS Form 144?

The planned 10,000-share sale has an aggregate market value of 313,787.00. The form also notes that 12,542,314 shares of Natural Gas Services Group, Inc. common stock were outstanding at the referenced time.

Which broker is handling the planned NGS stock sale?

The Form 144 identifies RBC Capital Markets LLC, located at 250 Nicollet Mall, Suite 1700, Minneapolis, MN 55401, as the broker for the planned sale of 10,000 Natural Gas Services Group, Inc. common shares on the NYSE.

What prior NGS stock sales by Stephen Taylor are listed in the last 3 months?

The filing lists multiple sales of Natural Gas Services Group, Inc. stock by Stephen Taylor in the past three months, including 20,000 shares sold on 08/22/2025 for 525,060.00 and 10,000 shares sold on 11/19/2025 for 303,100.00, among other transactions.

What representation does the seller make in the NGS Form 144 notice?

The person for whose account the securities are to be sold represents by signing the notice that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, and the form warns that intentional misstatements or omissions constitute federal criminal violations.