John D. Diekman is Director at AFFYMETRIX INC (AFFX). They have made 9 open-market trades across 6 companies since 2007, most recently 2026-06-17.
CIK 0001240357
2 open-market purchases totalling $26.6M since 2019, against 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| IDYA | 2,026,098 | $66.5M |
| ARVN | 4,512,136 | $31.4M |
| SCPH | 2,688,014 | $15.2M |
| SKYE | 7,943,520 | $12.4M |
| CRNX | 129,483 | $11.0M |
| ZLAB | 122,140 | $2.8M |
| AFFX | 102,998 | — |
| Total | $139.4M |
Shares reported on the most recent Form 4, priced at the 2026-06-22 close. 1 holding could not be priced and is excluded from the total.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SKYE | BUY | 2024-01-31 | 2024-02-02 | $2.31 | $24.1M | +9.7% | -6.0% | -3.8% |
| SCPH | SELL | 2022-10-06 | 2022-10-11 | $4.14 | $4.9M | -0.4% | +10.2% | +16.6% |
| ZLAB | SELL | 2022-02-04 | 2022-02-07 | $50.17 | $50K | +14.2% | -21.4% | -48.5% |
| ZLAB | SELL | 2021-11-05 | 2021-11-08 | $91.65 | $92K | -2.1% | -19.2% | -43.7% |
| ZLAB | SELL | 2021-08-05 | 2021-08-05 | $149.50 | $150K | -6.5% | +0.5% | -30.8% |
| ZLAB | SELL | 2021-05-05 | 2021-05-06 | $153.62 | $154K | +1.2% | +10.0% | -5.7% |
| IDYA | BUY | 2019-05-28 | 2019-05-28 | $10.00 | $2.5M | -9.2% | -13.1% | -46.5% |
| ARVN | SELL | 2019-03-28 | 2019-04-01 | $14.16 | $10.2M | +23.8% | +24.2% | +41.6% |
| CRNX | SELL | 2019-01-22 | 2019-01-24 | $21.88 | $11.5M | +0.9% | -8.2% | -4.9% |
| AFFX | SELL · 10b5-1 | 2011-06-30 | 2011-07-05 | $8.00 | $80K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2011-06-02 | 2011-06-02 | $7.00 | $35K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2011-05-06 | 2011-05-09 | $6.00 | $30K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2009-10-09 | 2009-10-13 | $9.90 | $50K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2009-08-04 | 2009-09-17 | $9.21 | $92K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2007-03-21 | 2007-03-23 | $30.00 | $300K | N/A | N/A | N/A |
| AFFX | SELL · 10b5-1 | 2007-02-08 | 2007-02-12 | $27.75 | $139K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.