Comparable stake leader
CMI Oxbow Partners, LLC
SEC ownership of SkyWater Technology, LLC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001819974.
Disclosed value leader
CMI Oxbow Partners, LLC
Comparable rows
4/16
Latest evidence
30 Sep 2026
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
CMI Oxbow Partners, LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
4 of 16
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
CMI Oxbow Partners, LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001819974
- Issuer location
- Bloomington, MN
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of SkyWater Technology, LLC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
CMI Oxbow Partners, LLC
Disclosed value leader
CMI Oxbow Partners, LLC
Comparable rows
4/16
Latest evidence
30 Sep 2026
13D/G
3/4/5
13F
Lead comparable stake: 34%
12 rows are not safely comparable across share classes.
13D/G row: CMI Oxbow Partners, LLC
Showing 1-8 of 16 holder rows.
Quick read
CMI Oxbow Partners, LLC leads the comparable SEC ownership view at 34%.
4 of 16 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens CMI Oxbow Partners, LLC's linked filing trail.
Comparable ownership
Top 4
CMI Oxbow Partners, LLC
34%
BALYASNY ASSET MANAGEMENT L.P.
6.4%
BlackRock, Inc.
5.1%
Bart L. Zibrowski
4.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 16 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| CMI Oxbow Partners, LLC |
13D/G
Unterseher Loren A
|
34%
Reported 13D/G
· 31 Mar 2025
|
$126,105,710
16,377,365 shares
|
-$11,740,883 | 31 Mar 2025 |
| BALYASNY ASSET MANAGEMENT L.P. |
13D/G
|
6.4%
Reported 13D/G
· 30 Jun 2026
|
$104,230,786
3,122,552 shares
|
$0 | 30 Jun 2026 |
| BlackRock, Inc. |
13D/G
|
5.1%
Reported 13D/G
· 31 Mar 2026
|
$66,897,613
2,440,628 shares
|
$0 | 31 Mar 2026 |
| Bart L. Zibrowski |
13D/G
3/4/5
Zibrowski Bart L · 10%+ Owner
|
4.5%
Reported 13D/G
· 02 Oct 2025
|
$40,353,164
2,162,549 shares
|
-$32,561,700 | 02 Oct 2025 |
| DDK Developments, L.L.C. |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$36,270,674
4,483,396 shares
|
— | 01 Aug 2023 |
| Gary J. Obermiller |
3/4/5
Director
|
—
denominator unverified
|
$3,963,095
489,114 shares
|
— | 22 May 2024 |
| Thomas R. Lujan |
3/4/5
Director
|
—
denominator unverified
|
$3,739,667
462,258 shares
|
— | 19 Jan 2024 |
| Bradley Ferguson |
3/4/5
Chief Govt Affairs Officer
|
—
denominator unverified
|
$3,590,382
443,805 shares
|
— | 11 Aug 2023 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$11,943,165.
Buys
$0
Insiders: 0
Sells
$11,943,165
Insiders: 3
Net
-$11,943,165
Shares: -557,780
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 557,780
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 230,908 | $0 | $7,187,354 | -$7,187,354 |
| 9-12 | 0 | 326,872 | $0 | $4,755,812 | -$4,755,812 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 26 reporting-owner rows connected to SkyWater Technology, LLC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
26
Largest Forms 3/4/5 holder
Bart L. Zibrowski
Net 12M change
-$11.94M
Full value: -$11,943,166 · USD · 12-month changeLatest report
31 Jul 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Bart L. Zibrowski | 10%+ Owner | $36,270,674 | Mixed | 01 Aug 2023 | ||
| DDK Developments, L.L.C. | 10%+ Owner | $36,270,674 | Mixed | 01 Aug 2023 | ||
| Gary J. Obermiller | Director | $3,963,095 | Mixed | 22 May 2024 | ||
| Thomas R. Lujan | Director | $3,739,667 | Mixed | 19 Jan 2024 | ||
| Bradley Ferguson | Chief Govt Affairs Officer | $3,590,382 | Mixed | 11 Aug 2023 | ||
| Mark Litecky | Chief Revenue Officer | $2,810,555 | Mixed | 11 Aug 2023 | ||
| John Spicer | EVP Operations | $550,411 | Mixed | 15 Mar 2023 | ||
| Steve Kosier | Chief Technology Officer | $513,747 | Mixed | 11 Aug 2023 | ||
| Amanda Daniel | Chief People Officer | $353,525 | Mixed | 11 Aug 2023 | ||
| Chunyi (amy) Leong | Director | $331,583 | Mixed | 22 May 2024 | ||
| Kurtzweil John T. | Director | $227,305 | Mixed | 12 Jun 2023 | ||
| Gregory B. Graves | Director | $115,851 | Filing P/S | 14 Mar 2025 | ||
| Steve Manko | Cfo | $0 | -$7,187,354 | -100% | Mixed | 31 Jul 2026 |
| Tammy J. Miller | Director | $0 | Mixed | 31 Jul 2026 | ||
| Thomas Sonderman | CEO, Director | $0 | -$69,715 | -100% | Mixed | 31 Jul 2026 |
| CMI Oxbow Partners, LLC | Director, 10%+ Owner | $0 | Mixed | 28 Jul 2026 | ||
| Joseph J. Humke | Director | $0 | Mixed | 31 Jul 2026 | ||
| Timothy E. Baxter | Director | $0 | Mixed | 31 Jul 2026 | ||
| Loren A. Unterseher | Director, 10%+ Owner | $0 | -$4,686,097 | -100% | Mixed | 28 Jul 2026 |
| Oxbow Industries, LLC | Director, 10%+ Owner | $0 | Mixed | 28 Jul 2026 |
Recent insider transactions for SkyWater Technology, LLC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Steve Manko | SKYT | Common Stock | Disposed to Issuer | -100% | -96,567 | 0 | 31 Jul 2026 | Direct | ||
| Steve Manko | SKYT | Options to Acquire Common Stock | Disposed to Issuer | -100% | -57,758 | 0 | 31 Jul 2026 | Direct | ||
| Thomas Sonderman | SKYT | Common Stock | Disposed to Issuer | -100% | -553,244 | 0 | 31 Jul 2026 | Direct | ||
| Thomas Sonderman | SKYT | Options to Acquire Common Stock | Disposed to Issuer | -100% | -620,115 | 0 | 31 Jul 2026 | Direct | ||
| Christopher Hilberg | SKYT | Common Stock | Disposed to Issuer | -100% | -64,391 | 0 | 31 Jul 2026 | Direct | ||
| Christopher Hilberg | SKYT | Options to Acquire Common Stock | Disposed to Issuer | -100% | -85,488 | 0 | 31 Jul 2026 | Direct | ||
| John Sakamoto | SKYT | Common Stock | Disposed to Issuer | -100% | -141,395 | 0 | 31 Jul 2026 | Direct | ||
| John Sakamoto | SKYT | Options to Acquire Common Stock | Disposed to Issuer | -100% | -349,202 | 0 | 31 Jul 2026 | Direct | ||
| Dennis J. Goetz | SKYT | Common Stock | Disposed to Issuer | -100% | -28,017 | 0 | 31 Jul 2026 | Direct | ||
| Nancy Fares | SKYT | Common Stock | Disposed to Issuer | -100% | -47,805 | 0 | 31 Jul 2026 | Direct | ||
| Timothy E. Baxter | SKYT | Common Stock | Disposed to Issuer | -100% | -17,166 | 0 | 31 Jul 2026 | Direct | ||
| Tammy J. Miller | SKYT | Common Stock | Disposed to Issuer | -100% | -15,732 | 0 | 31 Jul 2026 | Direct | ||
| Andrew D.c. LaFrence | SKYT | Common Stock | Disposed to Issuer | -100% | -15,732 | 0 | 31 Jul 2026 | Direct | ||
| Joseph J. Humke | SKYT | Common Stock | Disposed to Issuer | -100% | -28,017 | 0 | 31 Jul 2026 | Direct | ||
| Edward Daly | SKYT | Common Stock | Disposed to Issuer | -100% | -39,183 | 0 | 31 Jul 2026 | Direct | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -687,812 | 0 | 31 Jul 2026 | By trust for benefit of son | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -687,812 | 0 | 31 Jul 2026 | By trust for benefit of son | ||
| Loren A. Unterseher | SKYT | Common Stock | Disposed to Issuer | -100% | -687,812 | 0 | 31 Jul 2026 | By trust for benefit of son | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -687,811 | 0 | 31 Jul 2026 | By trust for benefit of daughter | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -687,811 | 0 | 31 Jul 2026 | By trust for benefit of daughter | ||
| Loren A. Unterseher | SKYT | Common Stock | Disposed to Issuer | -100% | -687,811 | 0 | 31 Jul 2026 | By trust for benefit of daughter | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -531,283 | 0 | 31 Jul 2026 | By family irrevocable trust | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -531,283 | 0 | 31 Jul 2026 | By family irrevocable trust | ||
| Loren A. Unterseher | SKYT | Common Stock | Disposed to Issuer | -100% | -531,283 | 0 | 31 Jul 2026 | By family irrevocable trust | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -4,515,414 | 0 | 31 Jul 2026 | Direct | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -4,515,414 | 0 | 31 Jul 2026 | Direct | ||
| Loren A. Unterseher | SKYT | Common Stock | Disposed to Issuer | -100% | -4,515,414 | 0 | 31 Jul 2026 | Direct | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -812,141 | 0 | 31 Jul 2026 | By revocable trust | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -812,141 | 0 | 31 Jul 2026 | By revocable trust | ||
| Loren A. Unterseher | SKYT | Common Stock | Disposed to Issuer | -100% | -812,141 | 0 | 31 Jul 2026 | By revocable trust | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -1,069,543 | 0 | 31 Jul 2026 | By 2024 grantor retained annuity trust | ||
| Unterseher Loren A | SKYT | Common Stock | Disposed to Issuer | -100% | -1,069,543 | 0 | 31 Jul 2026 | By 2024 grantor retained annuity trust | ||
| Loren A. Unterseher | SKYT | Common Stock | Disposed to Issuer | -100% | -1,069,543 | 0 | 31 Jul 2026 | By 2024 grantor retained annuity trust | ||
| Unterseher Loren A | SKYT | Common Stock | Gift | 24.6% | 160,321 | 812,139 | 28 Jul 2026 | By revocable trust | ||
| Unterseher Loren A | SKYT | Common Stock | Gift | 24.6% | 160,321 | 812,139 | 28 Jul 2026 | By revocable trust | ||
| Loren A. Unterseher | SKYT | Common Stock | Gift | 24.6% | 160,321 | 812,139 | 28 Jul 2026 | By revocable trust | ||
| Unterseher Loren A | SKYT | Common Stock | Gift | -13% | -160,321 | 1,069,543 | 28 Jul 2026 | By 2024 grantor retained annuity trust | ||
| Unterseher Loren A | SKYT | Common Stock | Gift | -13% | -160,321 | 1,069,543 | 28 Jul 2026 | By 2024 grantor retained annuity trust | ||
| Loren A. Unterseher | SKYT | Common Stock | Gift | -13% | -160,321 | 1,069,543 | 28 Jul 2026 | By 2024 grantor retained annuity trust | ||
| Unterseher Loren A | SKYT | Common Stock | Award | 18.2% | 4,304 | 28,017 | 10 Jun 2026 | Direct | ||
| Unterseher Loren A | SKYT | Common Stock | Award | 18.2% | 4,304 | 28,017 | 10 Jun 2026 | Direct | ||
| Loren A. Unterseher | SKYT | Common Stock | Award | 18.2% | 4,304 | 28,017 | 10 Jun 2026 | Direct | ||
| Joseph J. Humke | SKYT | Common Stock | Award | 18.2% | 4,304 | 28,017 | 10 Jun 2026 | Direct | ||
| Tammy J. Miller | SKYT | Common Stock | Award | 37.7% | 4,304 | 15,732 | 10 Jun 2026 | Direct | ||
| Andrew D.c. LaFrence | SKYT | Common Stock | Award | 37.7% | 4,304 | 15,732 | 10 Jun 2026 | Direct | ||
| Timothy E. Baxter | SKYT | Common Stock | Award | 50.2% | 5,738 | 17,166 | 10 Jun 2026 | Direct | ||
| Nancy Fares | SKYT | Common Stock | Award | 9.89% | 4,304 | 47,805 | 10 Jun 2026 | Direct | ||
| Dennis J. Goetz | SKYT | Common Stock | Award | 18.2% | 4,304 | 28,017 | 10 Jun 2026 | Direct | ||
| Edward Daly | SKYT | Common Stock | Award | 12.3% | 4,304 | 39,183 | 10 Jun 2026 | Direct | ||
| Steve Manko | SKYT | Common Stock | Sale | -43.7% | -$2,630,625 | $35.08 | -75,000 | 96,567 | 11 May 2026 | Direct |
* marks a reported price that did not pass the local price check.