Sergei Krylov - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Sergei Krylov has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Sergei Krylov is a corporate insider at ProFrac Holding Corp. (ACDC). SEC records also connect Krylov to DAWSON GEOPHYSICAL CO (DWSN). Krylov has reported 2 insider filings with the SEC since 2024. The most recent filing was in May 2026.
| Role | Insider |
|---|---|
| Notability | 26/100 |
Board memberships
- ProFrac Holding Corp.
- DAWSON GEOPHYSICAL CO
Reported roles
- Director
Trading Pattern
InsiderAlpha's records for Sergei Krylov go back to 2024: 2 primary Form 4 filings, an average of 0.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Sergei Krylov has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at ProFrac Holding Corp. (ACDC) - 1 filing, 2026
- Director at DAWSON GEOPHYSICAL CO (DWSN) - 1 filing, 2024
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-29 | ACDC | ProFrac Holding Corp. | A - Grant or award | 22.4K | $0.00 | |
| 2024-10-04 | DWSN | DAWSON GEOPHYSICAL CO | A - Grant or award | 19.2K | $0.00 |
Companies - Last 90 Days
- ProFrac Holding Corp. (ACDC) - 1 filing, last 2026-05-29
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Sergei Krylov has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- THRC Holdings, LP - $10.00M of ACDC open-market activity in the last 12 months
- Farris Wilks - $10.00M of ACDC open-market activity in the last 12 months
- Matthew Wilks - $165K of ACDC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Thomas J. Shaw
- Silver Point Capital L.P.
- SilverBay Capital Management LLC
- Michael Simanovsky
- Bob R. Simpson
- Ranbir Singh
- Ross Jeffery Sklar
- Barry Sloane
Frequently Asked Questions
Who is Sergei Krylov?
Sergei Krylov is a corporate insider at ProFrac Holding Corp. (ACDC). SEC records also connect Krylov to DAWSON GEOPHYSICAL CO (DWSN). Krylov has reported 2 insider filings with the SEC since 2024. The most recent filing was in May 2026.…
How many SEC Form 4 filings has Sergei Krylov submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Sergei Krylov's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Sergei Krylov profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.