NGS director granted 4,574 RSUs in equity award

TRINGALI DONALD J reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

TRINGALI DONALD J reported acquisition or exercise transactions in this Form 4 filing.

NATURAL GAS SERVICES GROUP INC director Donald J. Tringali received a grant of 4,574 Restricted Stock Units (RSUs). Each RSU represents one share of common stock upon vesting, which occurs on the first anniversary of the grant date, subject to possible accelerated vesting. After this filing, he reports 1,955 common shares held directly, 17,763 common shares held indirectly through a Rabbi Trust, and 4,574 RSUs awarded under the company’s 2019 Equity Incentive Plan.

Insights

Equity compensation analyst

Routine director RSU award with modest scale and clear vesting terms.

The filing shows director Donald J. Tringali receiving an award of 4,574 Restricted Stock Units under the company’s 2019 Equity Incentive Plan. RSUs are a common form of equity compensation, aligning director interests with shareholder outcomes over time.

The award vests on the first anniversary of the grant date, with potential accelerated vesting in specified circumstances, which the footnotes highlight. This timing helps encourage at least a one-year service and performance horizon, without indicating any immediate cash transaction.

Following the award, Tringali’s reported position includes 1,955 common shares held directly, 17,763 held indirectly via a Rabbi Trust, and the new 4,574 RSUs. This appears to be a standard, ongoing compensation grant rather than a market signal, so its impact on the investment thesis is limited.

Insider Trade Summary

Grant/Award: 4,574 shares

Grant/Award 3 txns

Insider TRINGALI DONALD J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	4,574	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 4,574 contracts (Direct); Common Stock — 17,763 shares (Indirect, Rabbi Trust); Common Stock — 1,955 shares (Direct)

Footnotes (2)

1. F1. Not applicable. Each Restricted Stock Unit represents the right to receive one share of the Issuer's common stock upon vesting.
2. F2. Not Applicable. The acquisition reflects an award of Restricted Stock Units pursuant to the Company's 2019 Equity Incentive Plan. The award vests on the first anniversary of the grant date, subject to accelerated vesting under certain circumstances.

Key Figures

RSU grant size: 4,574 units Direct common shares held: 1,955 shares Indirect common shares held (Rabbi Trust): 17,763 shares +2 more

5 metrics

RSU grant size 4,574 units Restricted Stock Units granted to director on 2026-06-10

Direct common shares held 1,955 shares Common Stock directly owned after transactions

Indirect common shares held (Rabbi Trust) 17,763 shares Common Stock indirectly owned via Rabbi Trust after transactions

Underlying common shares for RSUs 4,574 shares Common Stock underlying newly granted RSUs

Transaction code A Grant, award, or other acquisition of derivative security

Key Terms

Restricted Stock Units, Rabbi Trust, Equity Incentive Plan

3 terms

Restricted Stock Units financial

"Each Restricted Stock Unit represents the right to receive one share of the Issuer's common stock upon vesting."

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.

Rabbi Trust financial

"Indirect ownership of common stock is listed with nature of ownership as Rabbi Trust."

A rabbi trust is a special account a company sets up to hold promised future pay for executives, like bonus or retirement money, so those employees can see there are funds earmarked for them. It matters to investors because it signals the company’s commitment to keep key people, but the money is still part of the company’s assets and can be claimed by creditors if the company goes bankrupt—think of it as a labeled jar that isn’t completely off-limits.

Equity Incentive Plan financial

"The acquisition reflects an award of Restricted Stock Units pursuant to the Company's 2019 Equity Incentive Plan."

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did NGS director Donald J. Tringali receive in this Form 4 filing?

Donald J. Tringali received an award of 4,574 Restricted Stock Units (RSUs). Each RSU represents the right to receive one share of Natural Gas Services Group common stock, subject to vesting conditions tied to continued service and plan terms.

When do the 4,574 RSUs for NGS director Donald J. Tringali vest?

The 4,574 RSUs vest on the first anniversary of the grant date. The filing also notes that vesting may accelerate under certain circumstances, as described in the company’s 2019 Equity Incentive Plan and related award documentation.

How many NGS common shares does Donald J. Tringali hold directly and indirectly?

After the reported transactions, Tringali holds 1,955 common shares directly and 17,763 common shares indirectly through a Rabbi Trust. These positions are separate from the 4,574 RSUs, which convert to shares only upon vesting.

Is the RSU grant to NGS director Donald J. Tringali a market purchase or sale?

The RSU grant is an equity award, not a market trade. The Form 4 identifies it with transaction code “A” for a grant or award, meaning no open-market buying or selling occurred in connection with this specific compensation event.

Under what plan were the 4,574 RSUs to NGS director Tringali granted?

The 4,574 RSUs were granted under Natural Gas Services Group’s 2019 Equity Incentive Plan. This plan authorizes equity-based compensation, such as RSUs, to directors and other eligible participants according to the company’s established governance framework.

What does it mean that some NGS shares are held in a Rabbi Trust for Tringali?

The Form 4 shows 17,763 common shares held indirectly via a Rabbi Trust. A Rabbi Trust typically holds assets for deferred compensation purposes, with the trust owning the shares while the executive has a beneficial economic interest, subject to plan and trust terms.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/11/2026 - 10:27 AM Learn about SEC filing dates

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).

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^*

TRINGALI DONALD J

(Last) (First) (Middle)

C/O NATURAL GAS SERVICES GROUP INC

404 VETERANS AIRPARK LANE SUITE 300

(Street)

MIDLAND TEXAS 79705

(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)
06/10/2026

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								17,763	I	Rabbi Trust
Common Stock								1,955	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	(1)	06/10/2026		A		4,574		(2)	(2)	Common Stock	4,574	$0	4,574	D

Explanation of Responses:

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

2. Not Applicable. The acquisition reflects an award of Restricted Stock Units pursuant to the Company's 2019 Equity Incentive Plan. The award vests on the first anniversary of the grant date, subject to accelerated vesting under certain circumstances.

	Donal J. Tringali	06/11/2026
	** 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)