Michael Stock is CFO at Liberty Oilfield Services Inc. (LBRT). They have made 20 open-market trades across 1 company since 2019, most recently 2026-10-06.
CIK 0001705066
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 20 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| LBRT | 753,713 | $12.5M |
Shares reported on the most recent Form 4, priced at the 2026-10-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| LBRT | SELL · 10b5-1 | 2026-10-06 | 2026-10-07 | $20.00 | $67K | — | — | — |
| LBRT | SELL · 10b5-1 | 2026-10-01 | 2026-10-05 | $18.17 | $61K | -14.2% | — | — |
| LBRT | SELL · 10b5-1 | 2026-09-01 | 2026-09-01 | $19.84 | $132K | -0.8% | -6.1% | — |
| LBRT | SELL · 10b5-1 | 2026-08-03 | 2026-08-04 | $18.98 | $126K | +12.3% | +3.9% | — |
| LBRT | SELL · 10b5-1 | 2026-07-01 | 2026-07-01 | $25.89 | $259K | +3.1% | -23.6% | -24.7% |
| LBRT | SELL · 10b5-1 | 2026-06-01 | 2026-06-02 | $29.77 | $496K | -9.0% | -25.0% | -37.9% |
| LBRT | SELL · 10b5-1 | 2026-05-20 | 2026-05-20 | $33.48 | $670K | -4.3% | -14.8% | -34.7% |
| LBRT | SELL | 2026-02-06 | 2026-02-09 | $25.38 | $635K | +6.4% | +18.6% | +32.4% |
| LBRT | SELL · 10b5-1 | 2025-04-02 | 2025-04-03 | $16.00 | $80K | -7.0% | -6.0% | +0.0% |
| LBRT | SELL · 10b5-1 | 2025-03-03 | 2025-03-04 | $17.14 | $86K | -4.6% | -13.9% | -22.4% |
| LBRT | SELL · 10b5-1 | 2025-02-03 | 2025-02-05 | $17.94 | $179K | +1.1% | -15.3% | -37.6% |
| LBRT | SELL · 10b5-1 | 2025-01-16 | 2025-01-16 | $23.00 | $115K | -11.8% | -22.7% | -51.2% |
| LBRT | SELL · 10b5-1 | 2025-01-02 | 2025-01-03 | $20.82 | $416K | +9.6% | -14.6% | -37.8% |
| LBRT | SELL · 10b5-1 | 2024-12-30 | 2024-12-30 | $19.51 | $195K | +6.6% | +4.7% | -19.8% |
| LBRT | SELL · 10b5-1 | 2024-12-02 | 2024-12-03 | $18.49 | $370K | +2.2% | +11.6% | -13.9% |
| LBRT | SELL · 10b5-1 | 2024-11-25 | 2024-11-26 | $19.51 | $195K | -5.5% | +1.7% | -2.7% |
| LBRT | SELL · 10b5-1 | 2024-11-06 | 2024-11-07 | $18.45 | $92K | -2.5% | -2.1% | -0.3% |
| LBRT | SELL · 10b5-1 | 2024-11-01 | 2024-11-04 | $17.21 | $86K | +0.8% | +6.5% | +4.8% |
| LBRT | SELL · 10b5-1 | 2024-10-01 | 2024-10-02 | $19.23 | $288K | +2.2% | -16.5% | -0.4% |
| LBRT | SELL · 10b5-1 | 2024-09-18 | 2024-09-19 | $21.01 | $210K | -4.9% | -16.4% | -13.9% |
| LBRT | SELL · 10b5-1 | 2024-09-03 | 2024-09-05 | $20.01 | $300K | +8.2% | +8.5% | -4.6% |
| LBRT | SELL · 10b5-1 | 2024-08-01 | 2024-08-01 | $22.92 | $909K | -8.9% | -10.3% | -22.9% |
| LBRT | SELL · 10b5-1 | 2024-07-11 | 2024-07-11 | $21.01 | $184K | +0.0% | -2.6% | -5.5% |
| LBRT | SELL · 10b5-1 | 2024-07-01 | 2024-07-03 | $20.82 | $651K | +6.6% | +2.7% | -3.9% |
| LBRT | SELL · 10b5-1 | 2024-06-03 | 2024-06-03 | $24.32 | $486K | -3.7% | -9.4% | -13.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.