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

Rhea-AI Filing Summary

Stephen C. Taylor, a director of Natural Gas Services Group, reported a pre-arranged sale under a Rule 10b5-1 plan. On 09/16/2025 he sold 289 shares of NGS common stock at a weighted-average price of $27.50, a transaction executed under a 10b5-1 trading plan established May 16, 2025. After the sale, Mr. Taylor directly beneficially owns 405,143 shares and indirectly holds 114,213 shares through a rabbi trust. He also holds 4,456 restricted stock units that each convert to one share upon vesting.

The filing is a routine insider sale under an established plan and discloses both the small number of shares sold and the substantial remaining direct and indirect holdings.

Positive

• Transaction executed under a Rule 10b5-1 plan, indicating pre-established trading parameters and reduced insider timing concerns.
• Substantial retained ownership: after the sale the director still directly owns 405,143 shares and indirectly holds 114,213 shares via a rabbi trust.
• Disclosure of RSUs: 4,456 restricted stock units reported, showing alignment of compensation with equity.

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine, pre-planned insider sale; compliance with 10b5-1 reduces governance concerns.

The filing shows a small disposal of 289 shares executed pursuant to a Rule 10b5-1 plan set up on May 16, 2025, which indicates the transaction was pre-scheduled rather than opportunistic. Reporting the indirect holdings via a rabbi trust (114,213 shares) and sizable direct holdings (405,143 shares) provides transparency about the director's continued economic exposure. No amendments or unusual instruments are reported.

Securities Analyst

TL;DR: Transaction is immaterial to overall ownership; does not signal a change in investment stance.

The sale of 289 shares at a weighted-average price of $27.50 represents a negligible fraction of the director's direct holdings, which remain at 405,143 shares. The presence of 4,456 unrestricted stock units further aligns compensation with equity ownership. Absent larger disposals or additional context, this Form 4 is a routine disclosure without material impact on capitalization or control.

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
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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)
09/16/2025

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	09/16/2025		S		289(1)	D	$27.5(2)	405,143	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

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. 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, if applicable.

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	09/16/2025
	** 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.
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FAQ

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

He reported a sale of 289 shares of NGS common stock on 09/16/2025 executed under a Rule 10b5-1 plan.

At what price were the NGS shares sold in the Form 4 filing?

The filing lists a weighted-average price of $27.50 for the 289 shares sold.

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

After the sale he directly beneficially owns 405,143 shares and indirectly holds 114,213 shares via a rabbi trust.

Were the sales part of a trading plan for NGS insider Stephen C. Taylor?

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

Does the filing disclose any derivative positions for Stephen C. Taylor in NGS?

The filing reports 4,456 restricted stock units (each converting to one share upon vesting) and no options or other derivatives.