STOCK TITAN

Natural Gas Services (NGS) director granted stock units and shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

NATURAL GAS SERVICES GROUP INC director Donald J. Tringali reported equity awards and an RSU vesting into common stock. On 2026-06-05, 4,456 restricted stock units converted into common shares, 4,010 common shares were credited to an indirect Rabbi Trust account, and 446 shares were granted to his direct holdings.

After these transactions, Tringali holds 17,714 common shares indirectly through a Rabbi Trust and 1,955 common shares directly. All activity reflects grants and vesting events, with no open-market buying or selling.

Positive

  • None.

Negative

  • None.
Insider TRINGALI DONALD J
Role null
Type Security Shares Price Value
Exercise Restricted Stock Units 4,456 $0.00 --
Grant/Award Common Stock 446 $0.00 --
Grant/Award Common Stock 4,010 $0.00 --
Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 1,955 shares (Direct, null); Common Stock — 17,714 shares (Indirect, Rabbi Trust)
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).
RSUs converted 4,456 shares Restricted Stock Units converting into common stock on June 5, 2026
Indirect grant 4,010 shares Common stock credited to Rabbi Trust on June 5, 2026
Direct grant 446 shares Common stock granted to direct holdings on June 5, 2026
Indirect holdings after 17,714 shares Common stock held indirectly through Rabbi Trust after transactions
Direct holdings after 1,955 shares Common stock held directly after transactions
Exercise price $0.0000 per RSU Conversion or exercise price for RSUs into common stock
Restricted Stock Units financial
"security_title": "Restricted Stock Units""
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
"nature_of_ownership": "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.
derivative security financial
"transaction_code_description": "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.
RSU financial
"the vesting of a restricted stock unit (RSU) award"
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.
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SEC Form 4
FORM 4UNITED 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*
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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/05/2026A446A(1)1,955D
Common Stock06/05/2026A4,010A(1)17,714IRabbi 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(2)06/05/2026M4,456 (2) (2)Common Stock4,456$00D
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).
Donal J. Tringali06/08/2026
** Signature of Reporting PersonDate
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)