[Form 4] NATURAL GAS SERVICES GROUP INC Insider Trading Activity

Rhea-AI Filing Summary

Natural Gas Services Group (NGS): Director Stephen C. Taylor reported open‑market sales of common stock under a Rule 10b5‑1 trading plan established on May 16, 2025. He sold 100 shares on 11/06/2025 at $29.00, 9,900 shares on 11/07/2025 at a weighted average price of $29.0018 (range $29.00–$29.12), and 1,252 shares on 11/07/2025 at a weighted average price of $29.502 (range $29.50–$29.525).

Following these transactions, he beneficially owned 364,180 shares directly and 114,213 shares indirectly through a Rabbi Trust. He also held 4,456 restricted stock units, each representing the right to receive one share upon vesting.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

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^*

Taylor Stephen Charles

(Last) (First) (Middle)

404 VETERANS AIRPARK LANE

SUITE 300

(Street)

MIDLAND TX 79705

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NATURAL GAS SERVICES GROUP INC [ NGS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/06/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/06/2025		S		100(1)	D	$29	375,332	D
Common Stock	11/07/2025		S		9,900(1)	D	$29.0018(2)	365,432	D
Common Stock	11/07/2025		S		1,252(1)	D	$29.502(3)	364,180	D
Common Stock								114,213	I	Rabbi Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(4)							(4)	(4)	Common Stock	4,456		4,456	D

Explanation of Responses:

1. The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan established by the reporting person on May 16, 2025.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.00 to $29.12 inclusive. The reporting person undertakes to provide to NGS, any security holder of NGS, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in this footnote.

3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.50 to $29.525 inclusive. The reporting person undertakes to provide to NGS, any security holder of NGS, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in this footnote.

4. Not applicable. Each Restricted Stock Unit represents the right to receive one share of the Issuer's common stock upon vesting.

	Stephen C. Taylor	11/07/2025
	** Signature of Reporting Person	Date
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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did NGS director Stephen C. Taylor report on Form 4?

He reported sales of common stock executed under a Rule 10b5‑1 trading plan on 11/06/2025 and 11/07/2025.

How many NGS shares did Stephen C. Taylor sell and at what prices?

He sold 100 shares at $29.00, 9,900 shares at a weighted average $29.0018 (range $29.00–$29.12), and 1,252 shares at a weighted average $29.502 (range $29.50–$29.525).

How many NGS shares does Stephen C. Taylor own after the sales?

He beneficially owned 364,180 shares directly and 114,213 shares indirectly through a Rabbi Trust after the reported transactions.

Was a Rule 10b5‑1 trading plan used for these transactions?

Yes. The sales were effectuated pursuant to a Rule 10b5‑1 trading plan established on May 16, 2025.

Does Stephen C. Taylor hold any derivative securities of NGS?

Yes. He held 4,456 restricted stock units, each representing the right to receive one share upon vesting.

What is a weighted average price in this context?

It means shares were sold in multiple trades within a price range; the filer will provide details on request for each separate trade within the disclosed ranges.