[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 open-market sales on 08/22/2025 executed under a Rule 10b5-1 trading plan established May 16, 2025. The Form 4 shows two separate stock sale entries of 10,000 shares each at weighted-average prices of $26.5025 and $26.0035, reducing his reported direct common stock holdings to 413,334 shares after the transactions. The filing also discloses indirect beneficial ownership of 133,701 shares held in a Rabbi Trust and reported restricted stock units totaling 8,651 shares (4,456 and 4,195) tied to common stock. The form is signed and dated 08/22/2025.

Insights

Financial Analyst

TL;DR: Director sold 20,000 shares via a pre-established 10b5-1 plan; holdings remain substantial and an indirect stake is held in a Rabbi Trust.

The transaction is a routine insider sale executed under a 10b5-1 plan, which limits immediate interpretive value about company prospects because the plan predates the sales. The reported sales totaled 20,000 shares at weighted-average prices of $26.5025 and $26.0035, modest relative to the reported direct and indirect holdings (413,334 direct after sales plus 133,701 indirect). For investors, this filing documents liquidity activity by a director but does not, by itself, provide evidence of material change in company fundamentals.

Corporate Governance Expert

TL;DR: Use of a documented 10b5-1 plan demonstrates procedural compliance; disclosure includes direct, indirect, and RSU holdings.

The Form 4 provides clear disclosure of the director's sales under a 10b5-1 plan established May 16, 2025, which supports the affirmative-defense posture for insider trades. The filing separately identifies direct ownership changes and an indirect holding via a Rabbi Trust, plus outstanding restricted stock units. From a governance perspective, the form meets disclosure expectations by specifying weighted-average sale prices and offering to provide breakdowns of trade prices within the reported ranges.

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

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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).

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)
08/22/2025

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	08/22/2025		S		10,000(1)	D	$26.5025(2)	423,334	D
Common Stock	08/22/2025		S		10,000(1)	D	$26.0035(3)	413,334	D
Common Stock								133,701	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
Restricted Stock Units	(4)							(4)	(4)	Common Stock	4,195		4,195	D

Explanation of Responses:

1. The sale reported on this Form 4 was effected 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 $26.50 to $26.57 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.00 to $26.095 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 range 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	08/22/2025
	** 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 Stephen C. Taylor report on Form 4 for NGS?

He reported two sales totaling 20,000 shares on 08/22/2025 under a Rule 10b5-1 plan, with weighted-average prices of $26.5025 and $26.0035.

Was the sale part of a Rule 10b5-1 trading plan?

Yes. The filing states the sales were effected pursuant to a 10b5-1 plan established May 16, 2025.

How many NGS shares does Taylor directly and indirectly own after the transactions?

Directly: 413,334 shares (after the reported sales). Indirectly: 133,701 shares held in a Rabbi Trust.

Are there restricted stock units disclosed in the filing?

Yes. The Form 4 lists restricted stock units representing 4,456 and 4,195 shares (total 8,651) tied to common stock.

Does the Form 4 provide exact per-trade prices for the sales?

No. It reports weighted-average prices and states the sales occurred in multiple transactions within specified price ranges and that the reporting person will provide detailed breakdowns upon request.