Michael B. Gustafson is Director at PDF SOLUTIONS INC (PDFS). They have made 11 open-market trades across 2 companies since 2018, most recently 2026-07-01.
CIK 0001245081
3 open-market purchases totalling $338K since 2018, against 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PDFS | BUY | 2025-05-13 | 2025-05-14 | $19.45 | $146K | -5.4% | -2.8% | +1.8% |
| PDFS | BUY | 2025-02-24 | 2025-02-25 | $23.06 | $92K | -6.1% | -14.2% | -19.2% |
| PDFS | SELL | 2023-12-12 | 2023-12-14 | $30.90 | $329K | +5.4% | -5.4% | +8.6% |
| PDFS | SELL | 2023-02-28 | 2023-03-02 | $37.26 | $992K | +2.5% | +14.6% | +12.8% |
| PDFS | SELL | 2022-11-15 | 2022-11-17 | $29.92 | $150K | +1.4% | -4.6% | +8.7% |
| MRAM | SELL | 2022-08-17 | 2022-08-19 | $7.56 | $419K | +1.8% | -9.6% | -15.5% |
| MRAM | SELL | 2021-11-17 | 2021-11-18 | $12.70 | $363K | -1.4% | -13.6% | -4.5% |
| PDFS | SELL | 2021-11-12 | 2021-11-15 | $33.00 | $99K | -8.0% | -7.5% | -10.3% |
| PDFS | SELL | 2019-11-05 | 2019-11-07 | $15.78 | $41K | -1.0% | -2.4% | +3.8% |
| PDFS | SELL | 2019-06-13 | 2019-06-14 | $12.95 | $13K | -0.1% | +0.6% | +6.5% |
| MRAM | BUY | 2018-02-12 | 2018-02-13 | $7.00 | $100K | +1.7% | +17.2% | +14.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.