SKYT · Insider Trading
SkyWater Technology, Inc. Common Stock
Every open-market purchase and sale reported by SKYT officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-31 | Andrew D.C. LaFrence | Director | D | −15,732 | — |
| 2026-07-31 | Nancy Fares | Director | D | −47,805 | — |
| 2026-07-31 | Timothy E Baxter | Director | D | −17,166 | — |
| 2026-07-31 | Joseph J Humke | Director | D | −28,017 | — |
| 2026-07-31 | John Sakamoto | President and COO | D | −141,395 | — |
| 2026-07-31 | Tammy J Miller | Director | D | −15,732 | — |
| 2026-07-31 | Steve Manko | CFO | D | −96,567 | — |
| 2026-07-31 | Edward Daly | Director | D | −39,183 | — |
| 2026-07-31 | Christopher Hilberg | Chief Risk & Compl. Officer | D | −64,391 | — |
| 2026-07-31 | Oxbow Industries, LLC | Director | MIXED | −24,912,012 | — |
| 2026-07-31 | Thomas Sonderman | CEO | D | −553,244 | — |
| 2026-07-31 | Dennis J Goetz | Director | D | −28,017 | — |
| 2026-06-12 | Dennis J Goetz | Director | A | +4,304 | — |
| 2026-06-12 | Edward Daly | Director | A | +4,304 | — |
| 2026-06-12 | Joseph J Humke | Director | A | +4,304 | — |
| 2026-06-12 | Tammy J Miller | Director | A | +4,304 | — |
| 2026-06-12 | Nancy Fares | Director | A | +4,304 | — |
| 2026-06-12 | Andrew D.C. LaFrence | Director | A | +4,304 | — |
| 2026-06-12 | Timothy E Baxter | Director | A | +5,738 | — |
| 2026-06-12 | Oxbow Industries, LLC | Director | A | +12,912 | — |
| 2026-05-13 | Steve Manko | CFO | Sell | −75,000 | −$2.63M |
| 2026-04-23 | Christopher Hilberg | Chief Risk & Compl. Officer | F | −1,083 | −$10.00K |
| 2026-04-16 | Steve Manko | CFO | MIXED | −53,307 | −$2.22M |
| 2026-03-23 | Steve Manko | CFO | Sell | −71,693 | −$2.00M |
| 2026-03-18 | Steve Manko | CFO | F | −2,842 | −$79.18K |
| 2026-03-18 | Thomas Sonderman | CEO | F | −13,201 | −$367.78K |
| 2026-03-18 | Christopher Hilberg | Chief Risk & Compl. Officer | F | −1,317 | −$36.69K |
| 2026-03-18 | Steve Manko | CFO | MIXED | −81,401 | −$2.44M |
| 2026-03-17 | Thomas Sonderman | CEO | A | +50,455 | — |
| 2026-03-17 | John Sakamoto | President and COO | A | +21,221 | — |
| 2026-03-17 | Steve Manko | CFO | A | +29,432 | — |
| 2026-03-17 | Christopher Hilberg | Chief Risk & Compl. Officer | A | +17,946 | — |
| 2026-02-19 | John Sakamoto | President and COO | F | −8,539 | −$245.67K |
| 2026-02-19 | Christopher Hilberg | Chief Risk & Compl. Officer | F | −3,571 | −$102.74K |
| 2026-02-19 | Thomas Sonderman | CEO | F | −5,767 | −$165.92K |
| 2026-02-19 | Steve Manko | CFO | F | −7,145 | −$205.56K |
| 2025-12-10 | Christopher Hilberg | Chief Risk & Compl. Officer | F | −867 | −$16.45K |
| 2025-12-01 | Loren A Unterseher | Director | Sell | −600,000 | −$8.60M |
| 2025-12-01 | CMI Oxbow Partners, LLC | Director | Sell | −300,000 | −$4.36M |
| 2025-11-25 | Thomas Sonderman | CEO | Sell | −5,210 | −$69.72K |
| 2025-11-25 | CMI Oxbow Partners, LLC | Director | Sell | −600,000 | −$8.60M |
| 2025-11-20 | CMI Oxbow Partners, LLC | Director | Sell | −28,986 | −$471.19K |
| 2025-11-18 | Thomas Sonderman | CEO | Sell | −5,207 | −$88.52K |
| 2025-11-18 | Steve Manko | CFO | Sell | −50,000 | −$869.90K |
| 2025-11-17 | Loren A Unterseher | Director | MIXED | −2,785,992 | −$763.85K |
| 2025-10-17 | John Sakamoto | President and COO | F | −11,028 | −$182.95K |
| 2025-09-30 | Steve Manko | CFO | MIXED | −41,285 | −$784.81K |
| 2025-09-30 | Loren A Unterseher | Director | Sell | −361,110 | −$6.51M |
| 2025-09-24 | Oxbow Industries, LLC | Director | Sell | −720,000 | −$9.77M |
| 2025-09-24 | Steve Manko | CFO | MIXED | — | −$110.03K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| CMI Oxbow Partners, LLC | Director | 5,717,258 | $185.58M |
| Loren A Unterseher | Director | 687,815 | $22.33M |
| Gregory B Graves | Director | 14,285 | $463.69K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the SKYT quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.