Summary
Updated Aug 31, 2026
Yorktown Energy Partners X, L.P. files SEC Form 4 reports at Solaris Energy Infrastructure, Inc. (SEI). 1 SEC Form 4 filing on record, dated 18 December 2024. Most recent open-market trade: sold $23.41M of SEI on 18 December 2024. Lifetime open-market sales: $23.41M.
Recent Transactions
3Every recent SEC Form 4 transaction Yorktown Energy Partners X, L.P. has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Yorktown Energy Partners X, L.P. files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- KTR Management Company, LLC - $247.56M of SEI open-market activity in the last 12 months
- W. Howard Keenan Jr. - $149.00M of SEI open-market activity in the last 12 months
- Ray N. Walker Jr. - $4.10M of SEI open-market activity in the last 12 months
- Christopher M. Powell - $2.75M of SEI open-market activity in the last 12 months
- Aj Teague - $451K of SEI open-market activity in the last 12 months
- Laurie H. Argo - $379K of SEI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is Yorktown Energy Partners X, L.P.?
Yorktown Energy Partners X, L.P. is an investment firm of Solaris Energy Infrastructure, Inc. (SEI). InsiderAlpha holds 1 primary Form 4 filing for it, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Yorktown Energy Partners X, L.P. last file a Form 4?
The only primary Form 4 on record is dated 18 December 2024.
Has Yorktown Energy Partners X, L.P. been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($23.41M) across all tracked filings.
Where can I see all of Yorktown Energy Partners X, L.P.'s SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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