Krylov Sergei (CIK 1594869) reported 5 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-29). Recent activity: Buy ACDC (22,421 shares), Buy ACDC (18,916 shares), Buy DWSN (3,555 shares), Buy DWSN (2,640 shares), Buy DWSN (3,055 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-29 | ProFrac Holding Corp. (ACDC) | Director | Buy | 22,421 | $0 |
| 2025-06-02 | ProFrac Holding Corp. (ACDC) | Director | Buy | 18,916 | $0 |
| 2025-05-20 | DAWSON GEOPHYSICAL CO (DWSN) | Director | Buy | 3,555 | $4,586 |
| 2025-05-20 | DAWSON GEOPHYSICAL CO (DWSN) | Director | Buy | 2,640 | $3,353 |
| 2025-05-20 | DAWSON GEOPHYSICAL CO (DWSN) | Director | Buy | 3,055 | $4,063 |
Source: SEC Form 4 filings · as of 2026-05-29