Sergei Krylov left the role of Director at ProFrac Holding Corp., effective August 7, 2026. As of November 6, 2026, ProFrac Holding Corp. has reported one leadership change filing to the SEC under Item 5.02 of Form 8-K, on August 6, 2026, naming 1 departure (Form 8-K, August 6, 2026).
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ProFrac Holding Corp. reported a change among its directors and officers to the SEC on Form 8-K, Item 5.02, on 2026-08-06. It names 1 person. Every row below is cited to the filing it comes from, and this page adds each new change as ProFrac Holding Corp. files it.
Also on the record for ProFrac Holding Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 12, 2026 | Stake report, Schedule 13D/A, by THRC Holdings, LP | 47.3% of the class | 5%+ stakes | Source |
| June 29, 2026 | Stake report, Schedule 13D/A, by THRC Holdings, LP | 47.9% of the class | 5%+ stakes | Source |
| August 18, 2025 | Stake report, Schedule 13D/A, by THRC Holdings, LP | 47.1% of the class | 5%+ stakes | Source |
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More on ProFrac Holding Corp. and the records around it.
ProFrac Holding Corp. elsewhere on the record
- 5%+ stake filings Aug 2026
- Who owns it
Companies that share a holder
- THRC Holdings, LP also filed stake reports on 1 other company: Prairie Operating Co. (Nov 2025)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-08-06 | Out | Director | 2026-08-07 | 8-K, 2026-08-06 |
Who leads ProFrac Holding Corp., as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Director: Sergei Krylov, departure reported, effective 2026-08-07 (filed 2026-08-06). No successor is named in these filings.
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Find candidates like Director at ProFrac Holding Corp.Every change, in the filing's words
Departing: Sergei Krylov, Director, effective 2026-08-07
Resignation and Appointment of Directors On August 3, 2026, Sergei Krylov notified the Company of his resignation as a member of the Board, effective as of August 7, 2026.
- Transition of Chief Executive Officer On August 3, 2026, Johnathan Ladd Wilks ("Mr. Johnathan L. Wilks") notified the Company that he would resign as Chief Executive Officer of the Company, and from each other position as an officer, manager or employee that he held with the Company and its direct and indirect subsidiaries, in each case effective as of August 7, 2026.
- As described below, Mr. Johnathan L. Wilks was concurrently appointed to serve as a member of the Company's Board of Directors (the "Board").
- On August 4, 2026, the Board appointed Matthew D. Wilks ("Mr. Matthew D. Wilks"), who has served as Executive Chairman of the Company, to serve additionally as Chief Executive Officer of the Company, effective as of August 7, 2026.
- Mr. Matthew D. Wilks will continue to serve as Executive Chairman.
- Mr. Matthew D. Wilks, age 43, has served as Executive Chairman of the Board since May 2022 and as President of ProFrac Services, LLC since October 2018.
- He previously served as Chief Financial Officer of ProFrac Services, LLC from March 2018 to November 2021 and as interim Chief Financial Officer from January 2022 to March 2022, and has served as Vice President of Investments for THRC Holdings, LP since January 2012.
- Mr. Matthew D. Wilks serves on the board of directors of Flotek Industries, Inc. and as Executive Chairman of the board of directors of Dawson Geophysical Company.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.