SkyWater Technology, Inc — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Hilberg Christopher | Chief Risk & Compl. Officer | Tax Withholding | 867 | $18.97 | $16,447 | 49,871 | Dec 8, 2025 |
| Oxbow Industries, LLC | — | Sale | 100,000 | $14.54 | $1,454,000 | 4,487,394 | Nov 26, 2025 |
| Unterseher Loren A | — | Sale | 100,000 | $14.53 | $1,453,000 | 4,587,394 | Nov 21, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 100,000 | $14.53 | $1,453,000 | 6,711,256 | Nov 21, 2025 |
| SONDERMAN THOMAS | CEO | Sale | 5,210 | $13.38 | $69,710 | 521,757 | Nov 21, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 9,662 | $16.26 | $157,104 | 4,787,394 | Nov 18, 2025 |
| Manko Steve | CFO | Sale | 50,000 | $17.40 | $870,000 | 277,122 | Nov 14, 2025 |
| SONDERMAN THOMAS | CEO | Sale | 5,207 | $17.00 | $88,519 | 526,967 | Nov 14, 2025 |
| Sakamoto John | President and COO | Tax Withholding | 11,028 | $16.59 | $182,955 | 128,713 | Oct 16, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 2,200 | $20.55 | $45,210 | 4,809,056 | Oct 3, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 120,370 | $18.02 | $2,169,067 | 6,811,256 | Sep 26, 2025 |
| Manko Steve | CFO | Sale | 60,829 | $17.40 | $1,058,425 | 327,122 | Sep 26, 2025 |
| Manko Steve | CFO | Option Exercise | 17,141 | $14.00 | $239,974 | 411,790 | Sep 22, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 74,900 | $12.81 | $959,469 | 7,096,726 | Sep 19, 2025 |
| Oxbow Industries, LLC | — | Sale | 120,000 | $14.05 | $1,686,000 | 6,931,626 | Sep 18, 2025 |
| Unterseher Loren A | — | Sale | 188,976 | $10.47 | $1,978,579 | 7,171,626 | Sep 12, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 229,029 | $10.44 | $2,391,063 | 7,360,602 | Sep 10, 2025 |
| SONDERMAN THOMAS | CEO | Sale | 8,355 | $10.58 | $88,396 | 532,174 | Sep 10, 2025 |
| Unterseher Loren A | — | Sale | 60,767 | $12.08 | $734,065 | 7,600,245 | Aug 29, 2025 |
| Unterseher Loren A | — | Sale | 756,516 | $12.06 | $9,123,583 | 8,161,012 | Aug 28, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 37,979 | $11.16 | $423,846 | 9,453,640 | Aug 22, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 97,957 | $11.62 | $1,138,260 | 9,491,619 | Aug 15, 2025 |
| SONDERMAN THOMAS | CEO | Sale | 24,936 | $12.24 | $305,217 | 540,529 | Aug 13, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 287,454 | $12.38 | $3,558,681 | 9,812,589 | Aug 12, 2025 |
| Manko Steve | CFO | Option Exercise | 9,707 | $10.14 | $98,429 | 378,114 | Aug 8, 2025 |
| SONDERMAN THOMAS | CEO | Sale | 14,958 | $10.04 | $150,178 | 565,465 | Jun 26, 2025 |
| Unterseher Loren A | — | Sale | 900 | $9.13 | $8,217 | 10,445,808 | Jun 12, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 17,136 | $9.36 | $160,393 | 10,547,693 | Jun 10, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 5,919 | $9.50 | $56,231 | 10,567,973 | Jun 6, 2025 |
| Unterseher Loren A | — | Sale | 86,273 | $9.50 | $819,594 | 10,574,092 | May 27, 2025 |
| Baxter Timothy E | — | Award / Grant | 11,428 | $8.75 | $99,995 | 11,428 | May 21, 2025 |
| Unterseher Loren A | — | Other | 162,392 | $6.10 | $990,591 | 2 | May 21, 2025 |
| Miller Tammy J | — | Award / Grant | 11,428 | $8.75 | $99,995 | 11,428 | May 21, 2025 |
| Goetz Dennis J | — | Award / Grant | 11,428 | $8.75 | $99,995 | 23,713 | May 21, 2025 |
| Humke Joseph J | — | Award / Grant | 11,428 | $8.75 | $99,995 | 23,713 | May 21, 2025 |
| LaFrence Andrew D.C. | — | Award / Grant | 11,428 | $8.75 | $99,995 | 11,428 | May 21, 2025 |
| FARES NANCY | — | Award / Grant | 11,428 | $8.75 | $99,995 | 43,501 | May 21, 2025 |
| Daly Edward | — | Award / Grant | 11,428 | $8.75 | $99,995 | 34,879 | May 21, 2025 |
| SONDERMAN THOMAS | CEO | Tax Withholding | 10,191 | $8.42 | $85,808 | 580,423 | Mar 17, 2025 |
| Manko Steve | CFO | Tax Withholding | 2,251 | $8.42 | $18,953 | 368,407 | Mar 17, 2025 |
| Hilberg Christopher | Chief Risk & Compl. Officer | Tax Withholding | 1,316 | $8.42 | $11,081 | 50,738 | Mar 17, 2025 |
| Unterseher Loren A | — | Sale | 22,090 | $8.22 | $181,580 | 12,285 | Mar 14, 2025 |
| GRAVES GREGORY B | — | Sale | 12,844 | $8.11 | $104,165 | 14,285 | Mar 14, 2025 |
| CMI Oxbow Partners, LLC | — | Sale | 3,800 | $8.51 | $32,338 | 12,573,079 | Mar 5, 2025 |
| Hilberg Christopher | Chief Risk & Compl. Officer | Tax Withholding | 564 | $8.84 | $4,986 | 52,054 | Feb 25, 2025 |
| Manko Steve | CFO | Tax Withholding | 2,880 | $8.84 | $25,459 | 370,658 | Feb 25, 2025 |
| SONDERMAN THOMAS | CEO | Tax Withholding | 5,076 | $8.84 | $44,872 | 590,614 | Feb 25, 2025 |
| Sakamoto John | President and COO | Award / Grant | 40,877 | — | — | 139,741 | Feb 15, 2025 |
| Manko Steve | CFO | Tax Withholding | 3,899 | $10.03 | $39,107 | 346,592 | Feb 15, 2025 |
| Hilberg Christopher | Chief Risk & Compl. Officer | Award / Grant | 16,360 | — | — | 52,618 | Feb 15, 2025 |