NATURAL GAS SERVICES GROUP INC — fact timeline

NATURAL GAS SERVICES GROUP INC completed an acquisition involving Flatrock Compression Holdings LLC for 241,803 shares of common stock, $110 million in cash, and the right to receive certain royalty payments pursuant to the Royalty Agreement (closed 2026-06-12).

“On June 12, 2026, Natural Gas Services Group, Inc., a Colorado corporation (the “Company”), entered into a Securities Purchase Agreement (the “Purchase Agreement”) with Flatrock Compression Holdings LLC, a Delaware limited liability company (“Flatrock”), the holders of all of the membership interests of Flatrock (each, a “Seller” and, collectively, the “Sellers”), and Mule Deer Sky LLC, a Texas limited liability company, solely in its capacity as the Sellers Representative under the Purchase Agreement (the “Sellers Representative”). The transaction closed simultaneously with the execution of the Purchase Agreement on June 12, 2026. Pursuant to the Purchase Agreement, the Company acquired 100% of the issued and outstanding membership interests (the “Equity Interests”) of Flatrock from the Sellers in exchange for (i) 241,803 shares of common stock, par value $0.01 per share (the “Common Stock”), of the Company (the “Equity Consideration”), (ii) $110 million in cash, subject to customary”

NATURAL GAS SERVICES GROUP INC amended revolving credit of $400 million to $500 million with Texas Capital Bank.

“Fifth Amendment to Amended and Restated Credit Agreement with Texas Capital Bank, as administrative agent, and the lenders party thereto (the “Fifth Amendment”). Among other changes, the Fifth Amendment provides for additional commitments (the “Additional Commitments”) under the Company’s existing revolving credit facility, increasing the commitments from $400 million to $500 million”

NATURAL GAS SERVICES GROUP INC amended Fifth Amendment to Amended and Restated Credit Agreement with Texas Capital Bank, as administrative agent, and the lenders party thereto valued at increasing the commitments from $400 million to $500 million (effective 2026-06-12).

“On June 12, 2026, the Company and the guarantors from time to time party thereto entered into the Fifth Amendment to Amended and Restated Credit Agreement with Texas Capital Bank, as administrative agent, and the lenders party thereto (the “Fifth Amendment”).”

NATURAL GAS SERVICES GROUP INC entered into Securities Purchase Agreement with Flatrock Compression Holdings LLC, holders of all membership interests of Flatrock, and Mule Deer Sky LLC as Sellers Representative valued at 241,803 shares of common stock, $110 million in cash, plus contingent royalty payments (effective 2026-06-12).

“On June 12, 2026, Natural Gas Services Group, Inc., a Colorado corporation (the “Company”), entered into a Securities Purchase Agreement (the “Purchase Agreement”) with Flatrock Compression Holdings LLC, a Delaware limited liability company (“Flatrock”), the holders of all of the membership interests of Flatrock (each, a “Seller” and, collectively, the “Sellers”), and Mule Deer Sky LLC, a Texas limited liability company, solely in its capacity as the Sellers Representative under the Purchase Agreement (the “Sellers Representative”).”

NATURAL GAS SERVICES GROUP INC shareholders approved Approve the Redomestication of the Company From Colorado to Texas by Conversion at the 2026-06-10 meeting.

“The shareholders approved the redomestication of the Company from Colorado to Texas by conversion by the following vote: For Against Abstentions Broker Non-Votes 9,219,513 113,692 5,852 1,215,264”

NATURAL GAS SERVICES GROUP INC shareholders approved Ratification of Appointment of Independent Registered Public Accounting Firm at the 2026-06-10 meeting.

“The shareholders ratified the appointment of Ham, Langston & Brezina LLP as the Company’s independent registered public accounting firm for fiscal year 2026 by the following vote: For Against Abstentions 10,425,583 3,207 125,531”

NATURAL GAS SERVICES GROUP INC shareholders approved Election of Directors at the 2026-06-10 meeting.

“Each of the three nominees for director was duly elected by the Company’s shareholders, with votes as follows: Director Nominee For Against Abstentions/Withheld Broker Non-Votes 1A. J. Anthony Gallegos, Jr. (1) 9,012,307 321,253 5,497 1,215,264 1B. Justin C. Jacobs (1) 9,056,225 280,273 2,559 1,215,264 1C. John E. Jackson (1) 9,311,247 22,313 5,497 1,215,264”

NATURAL GAS SERVICES GROUP INC updated its first quarter ended March 31, 2026 guidance (raised).

“On May 12, 2026, Natural Gas Services Group, Inc. (the “Company”) hosted an earnings call to announce the Company’s financial results for the first quarter ended March 31, 2026, and provide certain other financial and business information, along with forward guidance.”

NATURAL GAS SERVICES GROUP INC reported three months ended March 31, 2026 results: revenue $48.5 million, net income $6.8 million, or $0.53 per diluted share, EPS $0.53 per diluted share. Guidance raised.

“Total revenue for the three months ended March 31, 2026, increased 17.1% to $48.5 million from $41.4 million for the three months ended March 31, 2025.”

NATURAL GAS SERVICES GROUP INC reported financial results for three months and year ended December 31, 2025.

“On March 17 2026, Natural Gas Services Group, Inc. (the “Company”) hosted an earnings call to announce the Company’s financial results for the three months and year ended December 31, 2025, and provide certain other financial and business information, along with forward guidance.”

NATURAL GAS SERVICES GROUP INC updated its full year 2026 guidance (initiated).

“The Company is introducing the following guidance for the full year 2026: Outlook FY 2026 Adjusted EBITDA $90.5 million - $95.5 million”

NATURAL GAS SERVICES GROUP INC reported full year 2025 results: revenue $164.3 million, net income $19.9 million, EPS $1.57 per diluted share.

“fourth quarter of 2025 represents a 16.0% year-over-year increase and a 6.8% sequential increase compared to the third quarter of 2025. Rental revenue for the full year 2025 of $164.3 million represents a 13.9% increase compared to 2024. • Net income of $4.1 million, or $0.32 per diluted share, for the fourth quarter of 2025 compared to $2.9 million or $0.23 per”

NATURAL GAS SERVICES GROUP INC reported fourth quarter of 2025 results: revenue $46.1 million, net income $4.1 million, EPS $0.32 per diluted share.

“maintain that disciplined approach going forward. 2025 Fourth Quarter Financial Results Revenue: Total revenue for the three months ended December 31, 2025, increased 13.5% to $46.1 million from $40.7 million for the three months ended December 31, 2024. This increase was solely attributable to higher rental revenues for the comparable periods. Rental revenue”

NATURAL GAS SERVICES GROUP INC amended credit facility of $300 million to $400 million with Texas Capital Bank.

“The Fourth Amendment increased the commitment to our existing credit facility with the lenders from $300 million to $400 million.”

J. Anthony Gallegos, Jr. was appointed as Director at NATURAL GAS SERVICES GROUP INC.

“appointed J. Anthony Gallegos, Jr. to the Board to fill the seat vacated by David Bradshaw”

Ian M. Eckert was appointed as Chief Financial Officer at NATURAL GAS SERVICES GROUP INC.

“On November 1, 2024, the Company entered into an employment agreement (the “ Employment Agreement ”) with Ian M. Eckert, age 37, pursuant to which Mr. Eckert will be appointed Chief Financial Officer of the Company.”

Jean K. Holley was appointed as Director at NATURAL GAS SERVICES GROUP INC.

“appointed Jean K. Holley to the Board to fill the new seat”

James Hazlett retired as Chief Technical Officer at NATURAL GAS SERVICES GROUP INC.

“Effective August 1, 2024, James Hazlett retired as our Chief Technical Officer and separated his employment from the Company.”

NATURAL GAS SERVICES GROUP INC reported financial results for first quarter ended March 31, 2024.

“On May 16, 2024, Natural Gas Services Group, Inc. (the “Company”) hosted an earnings call to announce the Company’s financial results for the first quarter ended March 31, 2024, and provide certain other financial and business information.”

NATURAL GAS SERVICES GROUP INC reported three months ended March 31, 2024 results: revenue $33.7 million, net income $5.1 million, EPS $0.41 per basic share.

“technology and services to the energy industry, today announced financial results for the three months ended March 31, 2024. First Quarter 2024 Highlights • Rental revenue of $33.7 million, an increase of 48% when compared to the first quarter of 2023 and 7% when compared to the fourth quarter of 2023. • Net income of $5.1 million, or $0.41 per basic share, as”

NATURAL GAS SERVICES GROUP INC reported first quarter ended March 31, 2024 results: revenue $33.7 million, net income $5.1 million, EPS $0.41 per basic share.

“technology and services to the energy industry, today announced financial results for the three months ended March 31, 2024. First Quarter 2024 Highlights • Rental revenue of $33.7 million, an increase of 48% when compared to the first quarter of 2023 and 7% when compared to the fourth quarter of 2023. • Net income of $5.1 million, or $0.41 per basic share, as”

NATURAL GAS SERVICES GROUP INC reported financial results for the three months and full year ended December 31, 2023.

“Natural Gas Services Group, Inc. Reports Full Year and Fourth Quarter 2023 Earnings”

Stephen C. Taylor retired as Interim Chief Executive Officer at NATURAL GAS SERVICES GROUP INC.

“Stephen C. Taylor, the Company’s Interim Chief Executive Officer, will retire although he will provide certain transition services”

Justin C. Jacobs was appointed as Chief Executive Officer at NATURAL GAS SERVICES GROUP INC.

“On January 29, 2024, the Company entered into an employment agreement (the “ Employment Agreement ”) with Justin C. Jacobs, age 49, pursuant to which Mr. Jacobs was appointed Chief Executive Officer of the Company, effective February 12, 2024”

NATURAL GAS SERVICES GROUP INC updated its third quarter ended September 30, 2023 guidance (initiated).

“On November 15, 2023, Natural Gas Services Group, Inc. (the “Company”) hosted an earnings call to announce the Company’s financial results for the third quarter ended September 30, 2023, and provide certain financial guidance for the fourth quarter of 2023 and for 2024.”

NATURAL GAS SERVICES GROUP INC amended credit facility of from $175 million to $225 million with Texas Capital Bank.

“On November 14, 2023, Natural Gas Services Group, Inc. and the guarantors from time to time party thereto entered into a First Amendment to Amended and Restated Credit Agreement (the "Amendment") with Texas Capital Bank, as administrative agent and the lenders thereto. The Amendment amends certain provisions under our existing credit facility with the lenders, primarily to (i) increase the lender commitment from $175 million to $225 million, and (ii) to add First-Citizens Bank & Trust Company as a new lender under the facility.”

NATURAL GAS SERVICES GROUP INC reported third quarter ended September 30, 2023 results: revenue $27.7 million, net income $2.2 million, EPS $0.18 per basic share.

“Natural Gas Services Group, Inc. Reports Third Quarter 2023 Financial and Operating Results Third Quarter 2023 Highlights • Rental revenue of $27.7 million, an increase of 49% when compared to the third quarter of 2022 and 15% when compared to the second quarter of 2023. • Net income of $2.2 million, or $0.18 per basic share, as compared to a net loss of $80,000 in the third quarter of 2022 and net income of $504,000 in the second quarter of 2023.”

Georganne Hodges was elected as Director at NATURAL GAS SERVICES GROUP INC.

“elected Georganne Hodges to the Board to fill the new seat”

Brian L. Tucker was appointed as President and Chief Operating Officer at NATURAL GAS SERVICES GROUP INC.

“On October 9, 2023, the Company entered into an entered into an employment agreement (the “ Employment Agreement ”) with Brian L. Tucker, age 49, pursuant to which Mr. Tucker was appointed President and Chief Operating Officer of the Company.”

NATURAL GAS SERVICES GROUP INC reported second quarter ended June 30, 2023 results: revenue $24.1 million, net income $504,000, EPS $0.04 per basic share.

“15, 2023 NYSE: NGS Exhibit 99.1 Natural Gas Services Group, Inc. Reports Second Quarter 2023 Financial and Operating Results Second Quarter 2023 Highlights • Rental revenue of $24.1 million, an increase of 33% when compared to the second quarter of 2022 and 6% when compared to the first quarter of 2023. • Net income of $504,000, or $0.04 per basic share, as compared”

David L. Bradshaw changed role as Lead Independent Director at NATURAL GAS SERVICES GROUP INC.

“David L. Bradshaw, who served as lead independent director prior to Mr. Tringali’s appointment, continues as a director on the Board”

Donald J. Tringali was appointed as Lead Independent Director at NATURAL GAS SERVICES GROUP INC.

“On June 30, 2023, the Board of Directors appointed Donald J. Tringali as the lead independent director of the Board of Directors of the Company.”

Stephen C. Taylor changed role as Interim Chief Executive Officer and President at NATURAL GAS SERVICES GROUP INC.

“On June 30, 2023, the Company entered into an Interim CEO Agreement with Mr. Taylor (the “Agreement”) pursuant to which he will continue to serve the Company as its Interim CEO and President”

NATURAL GAS SERVICES GROUP INC shareholders approved Ratification of Appointment of Independent Registered Public Accounting Firm at the 2023-06-15 meeting.

“Proposal 4 – Ratification of Appointment of Independent Registered Public Accounting Firm The shareholders ratified the appointment of Ham, Langston & Brezina LLP as the Company’s independent registered public accounting firm for fiscal year 2023 by the following vote: For Against Abstentions 10,252,204 12,006 143,564”

NATURAL GAS SERVICES GROUP INC shareholders approved Advisory Vote on the Frequency of Future Advisory Votes on Executive Compensation at the 2023-06-15 meeting.

“Proposal 3 - Advisory Vote on the Frequency of Future Advisory Votes on Executive Compensation The shareholders approved on an advisory basis to hold future advisory votes regarding the compensation of the Company’s named executive officers on an annual basis. The Company has determined, consistent with the stockholder vote, to hold future advisory votes regarding the compensation of the Company’s named executive officers on an annual basis until the next vote on the frequency of such advisory votes occurs: For Against Abstentions Broker Non-Votes 7,900,221 15,001 986,206 410,579”

NATURAL GAS SERVICES GROUP INC shareholders approved Advisory Vote on Executive Compensation at the 2023-06-15 meeting.

“Proposal 2 - Advisory Vote on Executive Compensation The shareholders approved, on an advisory basis, the compensation of the Company’s named executive officers, by the following vote: For Against Abstentions Broker Non-Votes 6,159,016 2,320,725 832,266 1,095,767”

NATURAL GAS SERVICES GROUP INC shareholders approved Election of three directors at the 2023-06-15 meeting.

“Proposal 1 - Election of Directors Each of the three nominees for director was duly elected by the Company’s shareholders, with votes as follows: Director Nominee For Against and Authority Withheld Abstentions Broker Non-Votes Stephen C. Taylor (1) 6,752,737 2,519,857 39,413 1,095,767 Justin C. Jacobs (1) 9,212,755 85,336 13,916 1,095,767 Donald J. Tringali (2) 9,034,810 263,281 13,916 1,095,767”

NATURAL GAS SERVICES GROUP INC reported financial results for first quarter ended March 31, 2023.

“On May 15, 2023, Natural Gas Services Group, Inc. issued a press release announcing its results of operations for first quarter ended March 31, 2023.”

NATURAL GAS SERVICES GROUP INC entered into Cooperation Agreement with Mill Road Capital III, LP and Mill Road Capital III GP LLC (effective 2023-04-28).

“On April 28, 2023, Natural Gas Services Group, Inc. (the “ Company ”) entered into a Cooperation Agreement (the “ Agreement ”) with Mill Road Capital III, L.P., a Cayman Islands exempted limited partnership, and Mill Road Capital III GP LLC, a Cayman Islands limited liability company (such parties collectively, the “ Mill Road Parties ”)”

Donald J. Tringali was appointed as Director at NATURAL GAS SERVICES GROUP INC.

“On April 28, 2023, pursuant to the terms of the Cooperation Agreement, Justin C. Jacobs and Donald J. Tringali were appointed to the Board to fill the vacancies left by Ms. Beyer and John Chisholm.”

Justin C. Jacobs was appointed as Director at NATURAL GAS SERVICES GROUP INC.

“On April 28, 2023, pursuant to the terms of the Cooperation Agreement, Justin C. Jacobs and Donald J. Tringali were appointed to the Board to fill the vacancies left by Ms. Beyer and John Chisholm.”

Leslie A. Beyer resigned as Director at NATURAL GAS SERVICES GROUP INC.

“On April 28, 2023, Leslie A. Beyer resigned from the Board of Directors of the Company in connection with the execution of the Cooperation Agreement.”

NATURAL GAS SERVICES GROUP INC reported three months and full year ended December 31, 2022 results: revenue $74.5 million, net income $(0.05) per basic and diluted share, EPS $(0.05) per basic and diluted share.

“herein reflect the consolidated financial statements included in the Company's Form 10-K that will be filed on March 31, 2023. 2022 Highlights • 2022 rental revenue was $74.5 million, an increase of 17.0% when compared to 2021 rental revenue of $63.6 million. • GAAP net loss for the year ended December 31, 2022 was $0.6 million or $(0.05) per basic and”

NATURAL GAS SERVICES GROUP INC incurred revolving credit of initial commitment of $175 million with Texas Capital Bank at Base Rate plus Applicable Margin or Adjusted Term SOFR plus Applicable Margin maturing February 28, 2028.

“On February 28, 2023, we entered into a five-year senior secured revolving credit agreement (“Amended and Restated Credit Agreement”) with Texas Capital Bank, as administrative agent (the “Lender”), TCBI Securities, Inc., as joint lead arranger and sole book runner and Bank of America, N.A., as joint lead arranger, with an initial commitment of $175 million as of the closing date.”

James D. Faircloth was appointed as Interim Chief Financial Officer at NATURAL GAS SERVICES GROUP INC.

“the Company entered into a Letter Agreement with James D. Faircloth pursuant to which he will be employed as the Company’s Interim Chief Financial Officer upon Mr. Foster’s departure.”

Micah C. Foster departed as Chief Financial Officer at NATURAL GAS SERVICES GROUP INC.

“In connection with the impending departure on February 28, 2023, of Micah C. Foster, the Company’s Chief Financial Officer”

Micah C. Foster resigned as Vice President and Chief Financial Officer at NATURAL GAS SERVICES GROUP INC.

“On January 24, 2023, Micah C. Foster, Vice President and Chief Financial Officer of Natural Gas Services Group, Inc. (the "Company") notified the Company of his decision to resign as an officer of the Company effective February 28, 2023.”

NATURAL GAS SERVICES GROUP INC amended credit facility of increase the lender commitment from $30 million to $50 million with Texas Capital Bank.

“The Amendment amends certain provisions under our existing credit facility with the Lender, primarily to (i) increase the lender commitment from $30 million to $50 million, and (ii) revise the applicable margin definition used to calculate the interest rate charged on outstanding loan amounts, with the overall effect of increasing the interest rate on the credit facility.”

John W. Chisholm retired as director at NATURAL GAS SERVICES GROUP INC.

“Mr. Chisholm’s decision to retire was not a result of any disagreement with the Company on any matter relating to the Company’s operations, policies or practices.”

NATURAL GAS SERVICES GROUP INC amended credit facility with Texas Capital Bank.

“the Amendment amends certain provisions under our existing credit facility with the Lender, primarily to (i) increase the lender commitment from $20 million to $30 million, and (ii) transition certain reference rates at which loans made pursuant to the credit facility accrue interest from LIBOR to Term SOFR (based on the Secured Overnight Financing Rate as administered by the Federal Reserve Bank of New York.)”