Solaris Energy Infrastructure, Inc. has 22 Schedule 13D or 13G filings on record since 2025-07-15. 4 holders' latest filing reports 5% or more of class a common stock, par value $0.01 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 13.1% | 8,024,851 | SCHEDULE 13G/A, 2026-08-06 | 2026-07-31 |
| William A. Zartler | 10% | 5,289,542 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Yorktown Energy Partners X, L.P. | 7.2% | 5,079,234 | SCHEDULE 13G/A, 2026-08-14 | 2026-05-06 |
| Voya Financial, Inc. | 5.2% | 2,545,879 | SCHEDULE 13G, 2026-02-12 | 2025-12-31 |
| BlackRock Portfolio Management LLC | 4.9% | 2,175,763 | SCHEDULE 13G/A, 2025-10-17 | 2025-09-30 |
| Summit Partners Public Asset Management, LLC | 4.03% | 1,796,310 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| KTR Management Company, LLC | 3.94% | 2,000,000 | SCHEDULE 13D/A, 2025-11-06 | 2025-11-04 |
| Fmr LLC | 3.8% | 2,049,481 | SCHEDULE 13G/A, 2026-05-06 | 2026-03-31 |
| Jane Street Group, LLC | 3.7% | 1,788,416 | SCHEDULE 13G/A, 2026-02-04 | 2025-12-31 |
| J Turbines, Inc. | 3.1% | 2,114,783 | SCHEDULE 13D/A, 2025-07-30 | 2025-07-28 |
| Encompass Capital Advisors LLC | 3.01% | 1,750,000 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Driehaus Capital Management LLC | 2.16% | 961,547 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| Millennium Management LLC | 1.6% | 647,363 | SCHEDULE 13G/A, 2025-07-21 | 2025-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-15 | BlackRock Portfolio Management LLC | 8.5% | SCHEDULE 13G/A |
| 2025-07-21 | Millennium Management LLC | 1.6% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 6.04% | SCHEDULE 13G |
| 2025-07-30 | J Turbines, Inc. | 3.1% | SCHEDULE 13D/A |
| 2025-08-08 | KTR Management Company, LLC | 6.1% | SCHEDULE 13D/A |
| 2025-10-17 | BlackRock Portfolio Management LLC | 4.9% | SCHEDULE 13G/A |
| 2025-11-05 | Fmr LLC | 5.2% | SCHEDULE 13G |
| 2025-11-06 | KTR Management Company, LLC | 3.94% | SCHEDULE 13D/A |
| 2025-11-14 | Driehaus Capital Management LLC | 2.16% | SCHEDULE 13G/A |
| 2025-11-14 | Summit Partners Public Asset Management, LLC | 4.03% | SCHEDULE 13G/A |
| 2025-11-14 | Encompass Capital Advisors LLC | 6.55% | SCHEDULE 13G/A |
| 2025-12-08 | Jane Street Group, LLC | 5.1% | SCHEDULE 13G |
| 2026-02-04 | Jane Street Group, LLC | 3.7% | SCHEDULE 13G/A |
| 2026-02-12 | Voya Financial, Inc. | 5.2% | SCHEDULE 13G |
| 2026-02-13 | William A. Zartler | 10% | SCHEDULE 13G/A |
| 2026-02-17 | Encompass Capital Advisors LLC | 5.24% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-06 | Fmr LLC | 3.8% | SCHEDULE 13G/A |
| 2026-05-15 | Encompass Capital Advisors LLC | 3.01% | SCHEDULE 13G/A |
| 2026-07-30 | BlackRock, Inc. | 7% | SCHEDULE 13G/A |
| 2026-08-06 | BlackRock, Inc. | 13.1% | SCHEDULE 13G/A |
| 2026-08-14 | Yorktown Energy Partners X, L.P. | 7.2% | SCHEDULE 13G/A |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.