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

Rhea-AI Filing Summary

Natural Gas Services Group, Inc. (NGS) Form 4 reports that director Stephen C. Taylor had 2,098 restricted stock units (RSUs) vest on 09/15/2025, which were converted into 2,098 shares of the company’s common stock. Following the vesting, Mr. Taylor directly beneficially owns 405,432 shares and indirectly holds 114,213 shares through a rabbi trust.

The filing notes each RSU represents the right to receive one share on vesting, with an election option to receive up to 50% in cash. No derivative transactions were reported and there is no purchase price associated with the vested RSUs.

Positive

• Director received 2,098 vested RSUs, converting to shares and increasing insider ownership to 405,432 directly held shares
• RSU structure aligns director interests with shareholders through equity-based compensation and deferred ownership via a rabbi trust

Negative

• None.

Insights

Corporate Governance Expert

TL;DR Director vested RSUs increase insider ownership and align incentives without signifying a material change.

The transaction is a routine compensation event: 2,098 RSUs vested and converted to common stock, increasing the reporting person’s direct holdings to 405,432 shares. The presence of an indirect holding via a rabbi trust indicates deferred compensation structures remain in place. For governance, this shows continued equity-based pay to directors, supporting alignment with shareholders. The amount appears immaterial relative to total outstanding shares and does not indicate unusual insider activity.

Securities Analyst

TL;DR A standard RSU vesting by a director; negligible market impact but increases disclosed insider ownership.

The Form 4 discloses 2,098 shares issued on vesting with no cash exercise price, and the reporting person retains substantial ownership both directly and indirectly. From a securities perspective, this is a routine, non-sale issuance and not a liquidity event. The filing contains clear details on ownership post-transaction and the election feature (up to 50% cash), which could affect future reported share issuance if exercised.

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

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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^*

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)
09/15/2025

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	09/15/2025		A		2,098	A	(1)	405,432	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	(2)	09/15/2025		M		2,098		(2)	(2)	Common Stock	2,098	$0	0	D
Restricted Stock Units	(2)							(2)	(2)	Common Stock	4,456		4,456	D

Explanation of Responses:

1. Not applicable. The reported shares were acquired in connection with the vesting of a Restricted Stock Unit award.

2. Not applicable. Each Restricted Stock Unit represented the right to receive one share of the Issuer's common stock upon vesting (or upon election by the reporting person, up to 50% of the RSUs in cash).

	Stephen C. Taylor	09/15/2025
	** 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).
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FAQ

What did the Form 4 filed for NGS disclose about Stephen C. Taylor on 09/15/2025?

The filing discloses that 2,098 Restricted Stock Units vested on 09/15/2025 and were converted into 2,098 shares; post-transaction direct ownership is 405,432 shares.

Were any shares sold by Stephen C. Taylor in this Form 4 filing for NGS?

No. The Form 4 reports acquisition via vesting of RSUs and no disposition or sale of shares.

Does the Form 4 show any derivative transactions for Stephen C. Taylor at NGS?

No derivative transactions were reported. The filing shows only vested RSUs converted into common stock with $0 exercise price.

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

After the reported vesting, Mr. Taylor beneficially owns 405,432 shares directly and 114,213 shares indirectly through a rabbi trust.

Can Mr. Taylor elect to receive cash instead of shares for his RSUs?

Yes. The filing states each RSU may be settled in stock upon vesting or, at the reporting person’s election, up to 50% of the RSUs in cash.