Thomas Sonderman is CEO at SkyWater Technology, Inc (SKYT). They have made 15 open-market trades across 2 companies since 2014, most recently 2026-03-16.
CIK 0001611597
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 $23K since 2014, against 14 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SKYT | 553,244 | $17.9M |
| RTEC | 20,099 | $573K |
| Total | $18.5M |
Shares reported on the most recent Form 4, priced at the 2026-03-18 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 |
|---|---|---|---|---|---|---|---|---|
| SKYT | SELL | 2025-11-21 | 2025-11-25 | $13.38 | $139K | +27.0% | +21.7% | +85.8% |
| SKYT | SELL | 2025-11-14 | 2025-11-18 | $17.00 | $89K | -2.7% | +0.0% | +83.4% |
| SKYT | SELL | 2025-09-10 | 2025-09-11 | $10.58 | $177K | +49.0% | +84.5% | +89.9% |
| SKYT | SELL | 2025-08-13 | 2025-08-14 | $12.24 | $610K | +4.0% | -1.9% | +84.4% |
| SKYT | SELL · 10b5-1 | 2025-06-26 | 2025-06-27 | $10.04 | $300K | +3.4% | +5.4% | +55.4% |
| SKYT | SELL · 10b5-1 | 2024-02-09 | 2024-02-12 | $10.01 | $380K | -6.6% | +5.8% | -23.8% |
| SKYT | SELL · 10b5-1 | 2024-01-24 | 2024-01-26 | $10.01 | $366K | +3.3% | +28.5% | +7.4% |
| SKYT | SELL · 10b5-1 | 2023-12-28 | 2023-12-29 | $10.01 | $17K | -6.8% | -2.0% | +7.1% |
| SKYT | SELL | 2023-05-11 | 2023-05-15 | $9.32 | $233K | +2.1% | -2.4% | -21.6% |
| SKYT | SELL | 2023-03-17 | 2023-03-20 | $11.12 | $38K | -1.4% | -11.8% | -19.8% |
| SKYT | SELL | 2023-03-06 | 2023-03-08 | $12.20 | $244K | -23.6% | -28.5% | -29.0% |
| SKYT | SELL | 2023-03-01 | 2023-03-03 | $12.58 | $115K | -7.3% | -10.3% | -19.0% |
| SKYT | SELL | 2023-02-16 | 2023-02-17 | $15.07 | $151K | -14.0% | -25.9% | -29.3% |
| SKYT | SELL | 2022-12-15 | 2022-12-19 | $8.40 | $34K | -9.4% | +13.6% | +38.9% |
| SKYT | SELL | 2022-09-12 | 2022-09-14 | $11.08 | $166K | -26.1% | -33.7% | -5.1% |
| SKYT | SELL | 2022-05-09 | 2022-05-11 | $5.74 | $106K | +0.6% | +52.9% | +205.1% |
| RTEC | SELL | 2016-11-15 | 2016-11-17 | $18.88 | $19K | +1.3% | +18.1% | +12.9% |
| RTEC | SELL | 2016-08-08 | 2016-08-09 | $17.18 | $17K | +3.1% | +2.0% | +4.6% |
| RTEC | BUY | 2014-11-06 | 2014-11-07 | $9.15 | $23K | -17.5% | -7.3% | -7.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.