Archrock has appointed Mohit Singh, as its new CFO, effective July 6, 2026. He replaces Doug Aron, who announced back in March that he would be retiring.

Archrock has its head office in west Houston and is a natural gas compression company with revenues of $1.5 billion and a market capitalization of $7.4 billion.

Mr. Singh was previously the CFO of Chesapeake Energy from 2021 through its merger with Southwestern Energy in 2024 to form Expand Energy. He left in August 2025. Expand recently appointed a new CFO after a 7 month search. Mr. Singh began his career with Shell, moved into investment banking with Goldman Sachs and RBC Capital Markets, before joining BP’s US onshore subsidiary.

Mr. Singh will a base salary of $650,000 and a one-time sign-on award of restricted stock with a value of $1.5 million that will vest over the next two-and-a-half years. He will also receive a relocation package to move to Texas from Oklahoma City.

Mr. Aron, aged 52, has been the CFO since August 2018. He worked for HollyFrontier for 15 years, including 6 years as CFO. He also spent 5 months as CFO at Nine Energy before joining Archrock. Funnily enough, I wrote about his successor at Nine Energy just yesterday.

Mr. Aron will leave on June 30 and will receive a pro-rated bonus for 2026 ($576,000). His restricted stock awards that were due to vest in January 2027 will vest on his retirement. All other outstanding stock awards will be forfeited. No severance will be paid.

Since announcing his retirement, Mr. Aron has sold stock worth $10.6 million. He still owns stock worth $14.5 million.

SEC filing – 8-K Archrock Singh CFO appointment

Nine Energy Service has appointed Heather Schmidt as its new CFO. She replaces Guy Sirkes, who resigned, effective May 11, 2026. She was originally appointed as Interim CFO before being confirmed as the permanent CFO on May 26.

Nine Energy is an oilfield services company that has had an eventful 2026 so far. On February 1, it went into Chapter 11 bankruptcy and exited one month later. All the old equity owners were wiped out, and $320 million of senior debt was converted into new common stock, saving $40 million in annual interest expense. With the bankruptcy filing, the stock was delisted from the New York Stock Exchange. However, the new stock began trading on the NYSE at the end of March, same ticker as before (NINE).

With the cancellation of long-term incentive program, there was nothing to keep Mr. Sirkes at the company. He had been at the company since 2019. Mr. Sirkes has since been appointed CFO at Ampirical, a PE-backed engineering company, based in Covington, LA, focused on power infrastructure.

Ms. Schmidt joined the company in 2012. She was previously the Senior VP of Strategic Development and Investor Relations. Before joining the company, she was with SCF Partners, a private equity firm. Ms. Schmidt will receive a base salary of $425,000.

SEC filing 8-K – Nine Energy CFO

Keefer Lehner, CFO of KLX Energy Services, has resigned his position to become the CFO of EVgo, effective January 12, 2026. Geoffrey Stanford, currently the Chief Accounting Officer, has been appointed the interim CFO.

KLX Energy Services is an oilfield services company with its head office in the Galleria area. It has annualized revenues of $645 million. It only has a market capitalization of $32 million because of a heavy debt burden ($250 million) as a result of acquisitions made in 2018-2019.

Mr. Lehner has been the CFO since July 2020 and joined the company following its all-stock merger with Quintana Energy Services, where he had been CFO since its formation. He began his career in the investment banking division of Simmons & Co.

EVgo is based in Los Angeles and operates a fast charging network for electric vehicles. It has revenues of $350 million and a market capitalization of $1 billion. The company originally started out in 2010 as a subsidiary of Houston-based NRG who sold the business in 2016 to a PE-firm. It was taken public by a SPAC in July 2021. Mr. Lehner replaces Paul Dobson, who lasted just over a year as CFO of EVgo.

Mr. Lehner will receive a base salary of $470,000 (a bump of 8% on his current base ). He will also receive a lump sum cash signing bonus of $400,000, plus time and performance-based restricted stock grants.  He does not have to relocate to Los Angeles.

Mr. Stanford joined Quintana in 2018 as its Chief Accounting Officer and took the same role after the merger with KLX. He was previously the Chief Accounting Officer at Willbros Construction.

SEC filing – 8-K – KLX CFO departure

SEC filing – 8-K EVgo CFO appointment

Elijio Serrano, CFO of TETRA Technologies, has announced he will retire from his position, effective March 31, 2026. It is anticipated that Mr. Serrano will stay on as an advisor to CEO Brady Murphy, on terms to be agreed upon.

Matt Sanderson, currently Chief Commercial Officer since 2022, will become CFO. He joined TETRA in 2016. Prior to that, he spent over 19 years at Schlumberger. Compensation arrangements for Mr. Sanderson have yet to be determined. Mr. Sanderson is actually paid more in his current role ($467,500) than Mr. Serrano is in his ($452,400).

TETRA is an oilfield services company that manufactures clear brine fluids and additives for use in drilling and completion. It also has a water and flowback services division. TETRA has revenues of $600 million and a market capitalization of $1 billion.

Mr. Serrano, who has just turned 68, joined TETRA as CFO in August 2012. He also spent a long time at Schlumberger (17 years) and has been a CFO for various companies since 1999.

Earlier this month, the company appointed Katherine Kokenes as its VP – Chief Accounting Officer. She joined from Independence Contract Drilling, where she held the same title. Prior to joining ICD in 2013, she spent 17 years at Nabors Industries, another Houston-based drilling company.

The company has its head office in The Woodlands, just next to I-45. However, in August, it signed a lease to move its corporate office two miles down the road to nearby Spring (close to the ExxonMobil campus). It will vacate its existing lease early, incurring a one-time charge of $9 million, but ongoing lease costs will be lower. The company is downsizing from a 153,000 sq. ft office to one that is 62,000 sq. ft.

SEC filing 8-K TETRA Tech CFO to retire