Yorktown Energy Partners X, L.P.
CIK 1577919 · last filed 2024-12-18
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$49.23M
Companies
5
Total Filings
18
Lifetime Open-Market Net
-$150.37M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Solaris Energy Infrastructure, Inc. (SOI) Delisted | 10%+ Owner | 975,000 | $11.32 | $11.04M | -$135.66M | 6 | 2024-12-18 |
| REPX | 10%+ Owner | 390,860 | $32.98 | $12.89M | $0 | 2 | 2023-07-18 |
| Brigham Minerals, Inc. (MNRL) Delisted | 10%+ Owner | 2,683,371 | $32.50 | $87.21M | -$13.94M | 1 | 2019-12-18 |
| METC | 10%+ Owner | 3,726,959 | $9.75 | $36.34M | -$766.9K | 1 | 2017-02-10 |
| Extraction Oil & Gas, Inc. (XOG) Delisted | 10%+ Owner | 17,554,262 | $68.54 | $1.20B | $0 | 1 | 2016-10-31 |
Recent Filings · Page 2 of 2
18 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-03-11 | Solaris Energy Infrastructure, Inc. (SOI) Delisted | Mixed | −400,000 | -$5.10M | EDGAR |
| 2021-02-26 | Solaris Energy Infrastructure, Inc. (SOI) Delisted | Mixed | −500,000 | -$5.50M | EDGAR |
| 2019-12-18 | Brigham Minerals, Inc. (MNRL) Delisted | Mixed | −802,324 | -$13.94M | EDGAR |
| 2019-03-14 | Solaris Energy Infrastructure, Inc. (SOI) Delisted | Mixed | −2,000,000 | -$31.15M | EDGAR |
| 2018-01-16 | Solaris Energy Infrastructure, Inc. (SOI) Delisted | Mixed | −1,408,388 | -$30.49M | EDGAR |
| 2017-11-15 | Solaris Energy Infrastructure, Inc. (SOI) Delisted | Mixed | −2,660,201 | -$40.01M | EDGAR |
| 2017-02-10 | METC | Sell (S) | −56,810 | -$766.9K | EDGAR |
| 2016-10-31 | Extraction Oil & Gas, Inc. (XOG) Delisted | Grant (A) | +17,554,262 | $0 | EDGAR |
Showing 11–18 of 18
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Page 2 of 2
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.