Spencer D. Armour III is Director at ProPetro Holding Corp. (PUMP). They have made 27 open-market trades across 3 companies since 2008, most recently 2026-05-19.
CIK 0001399885
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.
1 open-market purchase totalling $106K since 2023, against 26 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VNOM | BUY | 2023-03-15 | 2023-03-16 | $26.44 | $106K | +3.8% | +14.0% | -5.9% |
| PUMP | SELL | 2022-09-06 | 2022-09-07 | $8.85 | $583K | +2.0% | +16.1% | +14.3% |
| PUMP | SELL | 2022-08-02 | 2022-08-03 | $9.90 | $652K | +2.0% | +4.7% | +38.2% |
| PUMP | SELL | 2022-07-05 | 2022-07-07 | $8.99 | $592K | +0.7% | -12.2% | +5.8% |
| PUMP | SELL | 2022-06-07 | 2022-06-09 | $13.95 | $919K | -23.3% | -34.3% | -36.9% |
| PUMP | SELL | 2022-05-03 | 2022-05-04 | $14.27 | $940K | -7.1% | -5.5% | -31.0% |
| PUMP | SELL | 2022-04-05 | 2022-04-06 | $14.37 | $946K | +16.0% | -2.8% | -35.8% |
| PUMP | SELL | 2022-03-01 | 2022-03-02 | $12.51 | $824K | +3.9% | +10.6% | +0.8% |
| PUMP | SELL | 2022-02-01 | 2022-02-02 | $10.86 | $715K | +14.3% | +27.3% | +30.4% |
| PUMP | SELL | 2022-01-04 | 2022-01-05 | $9.27 | $611K | +11.7% | +20.2% | +48.7% |
| PUMP | SELL | 2021-12-07 | 2021-12-08 | $8.81 | $580K | -9.3% | +12.1% | +74.4% |
| PUMP | SELL | 2021-11-02 | 2021-11-04 | $9.44 | $622K | -7.3% | -11.7% | +14.5% |
| PUMP | SELL | 2021-10-05 | 2021-10-07 | $9.97 | $2.0M | +3.0% | +0.1% | -8.4% |
| PUMP | SELL | 2021-07-06 | 2021-07-07 | $8.90 | $586K | -11.2% | -10.0% | +21.9% |
| PUMP | SELL | 2021-06-01 | 2021-06-02 | $10.46 | $689K | -2.9% | -15.7% | -31.1% |
| PUMP | SELL | 2021-05-04 | 2021-05-05 | $10.43 | $687K | +9.6% | +13.4% | -22.9% |
| [PUMP] | SELL · 10b5-1 | 2021-04-06 | 2021-04-08 | $10.75 | $354K | N/A | N/A | N/A |
| PUMP | SELL | 2019-07-17 | 2019-07-19 | $17.25 | $776K | +4.5% | -33.1% | -50.4% |
| PUMP | SELL | 2019-06-11 | 2019-06-13 | $18.95 | $426K | +0.6% | +1.1% | -42.2% |
| PUMP | SELL | 2019-05-23 | 2019-05-24 | $19.47 | $172K | -1.2% | -0.1% | -39.8% |
| PUMP | SELL | 2019-05-22 | 2019-05-24 | $20.60 | $464K | -1.2% | -0.1% | -39.8% |
| PUMP | SELL | 2019-04-16 | 2019-04-18 | $23.96 | $539K | -9.3% | -5.4% | -27.9% |
| PUMP | SELL | 2019-03-06 | 2019-03-08 | $19.27 | $650K | +10.2% | +19.3% | -5.1% |
| PUMP | SELL | 2019-02-12 | 2019-02-14 | $17.15 | $2.3M | +6.4% | +20.4% | +25.7% |
| PUMP | SELL | 2018-11-19 | 2018-11-20 | $19.06 | $641K | -13.9% | -33.3% | -3.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.