MARK STEPHEN BERG
CIK 1238881 · EVP, Corporate Operations · last filed 2026-05-21
"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
$882.7K
Companies
4
Total Filings
123
Lifetime Open-Market Net
-$23.61M
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 |
|---|---|---|---|---|---|---|---|
| PUMP | Director | 56,909 | $15.51 | $882.7K | $75.0K | 6 | 2026-05-21 |
| PIONEER NATURAL RESOURCES CO (PXD) Delisted | EVP, Corporate Operations | 0 | $269.62 | $0 | -$23.96M | 103 | 2024-05-03 |
| HighPoint Resources Corp (HPR) Delisted | Director | 138,588 | $4.73 | $655.5K | $100.3K | 10 | 2020-06-05 |
| Pioneer Southwest Energy Partners L.P. (PSE) Delisted | EVP, General Counsel | 0 | — | — | $169.9K | 4 | 2013-12-18 |
Recent Filings · Page 11 of 13
123 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2012-03-29 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Disc (I) | −9,850 | -$1.03M | EDGAR |
| 2012-03-08 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Mixed | +13,173 | -$778.8K | EDGAR |
| 2012-02-24 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Grant (A) | +19,947 | $0 | EDGAR |
| 2012-02-22 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Mixed | −4,784 | -$543.8K | EDGAR |
| 2012-01-04 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Mixed | +21,444 | -$988.9K | EDGAR |
| 2011-11-17 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Mixed | −7,014 | -$675.5K | EDGAR |
| 2011-02-22 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Sell (S) | −5,414 | -$542.0K | EDGAR |
| 2011-02-15 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Mixed | +2,581 | -$292.2K | EDGAR |
| 2011-01-04 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Mixed | +11,928 | -$443.8K | EDGAR |
| 2010-09-23 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Sell (S) | −1,600 | -$106.9K | EDGAR |
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.