NGS director Gallegos granted 4,456 shares in RSU vesting update

Rhea-AI Filing Summary

NATURAL GAS SERVICES GROUP INC director John A. Gallegos Jr. reported equity compensation activity. He received 4,456 shares of common stock at no cost in connection with the vesting of a restricted stock unit award. Following the grant and RSU conversion, he directly holds 5,345 common shares.

Insider Trade Summary

4,456 shares exercised/converted

Mixed 2 txns

Insider Gallegos John A. Jr.

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	4,456	$0.00	--
Grant/Award	Common Stock	4,456	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 5,345 shares (Direct, null)

Footnotes (1)

1. Not applicable. The reported shares were acquired in connection with the vesting of a restricted stock unit (RSU) award. Not applicable. Each RSU 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).

Key Figures

Common shares acquired: 4,456 shares Shares held after transaction: 5,345 shares RSUs converted: 4,456 units +1 more

4 metrics

Common shares acquired 4,456 shares Grant/award acquisition on 2026-06-05

Shares held after transaction 5,345 shares Direct common stock holdings following Form 4

RSUs converted 4,456 units Restricted Stock Units exercised into common stock

Exercise/conversion price $0.00 per share RSU conversion and share grant at no cost

Key Terms

Restricted Stock Units, RSU, derivative security, Grant, award, or other acquisition

4 terms

Restricted Stock Units financial

"The reported shares were acquired in connection with the vesting of a restricted stock unit (RSU) award."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

RSU financial

"Each RSU represented the right to receive one share of the Issuer's common stock upon vesting"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

derivative security financial

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

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Form 4 Insider Transactions: What Each Field Means →

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).

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^*

Gallegos John A. Jr.

(Last) (First) (Middle)

952 ECHO LANE

SUITE 460

(Street)

HOUSTON TEXAS 77024

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/05/2026

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

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

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

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	06/05/2026		A		4,456	A	(1)	5,345	D

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)	06/05/2026		M		4,456		(2)	(2)	Common Stock	4,456	$0	0	D

Explanation of Responses:

1. Not applicable. The reported shares were acquired in connection with the vesting of a restricted stock unit (RSU) award.

2. Not applicable. Each RSU 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).

	J. Anthony Galleghos, Jr.	06/08/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did NGS director John A. Gallegos Jr. report?

John A. Gallegos Jr. reported acquiring 4,456 shares of Natural Gas Services Group common stock. The shares were received at no cost as equity compensation tied to the vesting of a restricted stock unit award.

Was the NGS Form 4 transaction an open-market buy or sale?

The Form 4 does not show any open-market buy or sale. Instead, it reports a grant and RSU vesting, where 4,456 restricted stock units converted into an equal number of common shares at no purchase price.

How many NGS common shares does John A. Gallegos Jr. own after this filing?

After the reported transactions, John A. Gallegos Jr. directly owns 5,345 shares of Natural Gas Services Group common stock. This reflects his updated direct holdings following the RSU vesting and related share grant.

What happened to the restricted stock units reported in the NGS Form 4?

The Form 4 shows 4,456 restricted stock units were exercised or converted into common stock. Each RSU represented the right to receive one share of NGS common stock upon vesting, consistent with the footnote explanation.

Did the NGS insider receive cash or shares upon RSU vesting?

The filing shows the insider received shares. Each RSU entitled him to one share of common stock upon vesting, though the plan allowed an election for up to 50% in cash, which is not reflected in this reported transaction.