[Form 4] Natural Gas Services Group, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Stephen C. Taylor, a director of Natural Gas Services Group, Inc. (NGS), reported an insider sale executed under a Rule 10b5-1 trading plan. On 09/04/2025 he sold 10,000 shares of NGS common stock at a weighted average price of $27.0018 per share. After the reported sale Mr. Taylor beneficially owned 403,334 shares directly and 114,213 shares indirectly through a Rabbi Trust. The filing also reports restricted stock units representing rights to receive 4,456 and 4,195 shares, respectively. The reporting person states the 10b5-1 plan was established on May 16, 2025 and that the sale occurred in multiple transactions at prices ranging from $27.00 to $27.015.

Insights

Financial Analyst

TL;DR: Director sold 10,000 shares under a pre-established 10b5-1 plan; substantial remaining direct and indirect holdings remain.

From a capital-markets perspective, the transaction appears routine and compliant because it was executed pursuant to a Rule 10b5-1 trading plan, which is intended to provide an affirmative defense against insider trading claims. The sale size (10,000 shares) should be interpreted relative to his residual direct holding of 403,334 shares and indirect holding of 114,213 shares, both disclosed in the filing. The weighted average sale price was $27.0018, with executions between $27.00 and $27.015. The filing also discloses outstanding restricted stock units (4,456 and 4,195) that convert to common shares upon vesting, which modestly increases eventual share dilution.

Corporate Governance Expert

TL;DR: Disclosure follows standard Section 16 reporting conventions and documents use of a pre-established trading plan.

The Form 4 provides clear disclosure of the relationship (Director), the Rule 10b5-1 plan establishment date (May 16, 2025), and the details of the sale including weighted average price and price range. The separation of direct and indirect holdings, including shares held in a Rabbi Trust, aligns with good governance transparency. Reporting of restricted stock units clarifies future potential issuance but does not state vesting dates in this filing. Overall, the form meets routine disclosure expectations without indicating control shifts or governance concerns.

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)
09/04/2025

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	09/04/2025		S		10,000(1)	D	$27.0018(2)	403,334	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	(3)							(3)	(3)	Common Stock	4,456		4,456	D
Restricted Stock Units	(3)							(3)	(3)	Common Stock	4,195		4,195	D

Explanation of Responses:

1. The sale reported on this Form 4 was 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. These shares were sold in multiple transactions at prices ranging from $27.00 to $27.015 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 within the ranges set forth in this footnote.

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

	Stephen C. Taylor	09/04/2025
	** 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 shares did Stephen C. Taylor sell according to the Form 4 for NGS?

The Form 4 reports a sale of 10,000 shares of NGS common stock executed on 09/04/2025.

At what price were the NGS shares sold by the director?

The shares were sold at a weighted average price of $27.0018, with individual executions ranging from $27.00 to $27.015.

How many NGS shares does Stephen C. Taylor beneficially own after the reported transaction?

After the sale he beneficially owns 403,334 shares directly and 114,213 shares indirectly (held in a Rabbi Trust).

Was the sale part of a pre-established trading plan?

Yes. The sale was effectuated pursuant to a Rule 10b5-1 trading plan established on May 16, 2025.

Does the Form 4 disclose any restricted stock units (RSUs)?

Yes. The filing reports RSUs representing the right to receive 4,456 and 4,195 shares, respectively.