D Mark DeWalch
CIK 1638259 · last filed 2026-06-02
"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
$14.34M
Companies
1
Total Filings
34
Lifetime Open-Market Net
$3.54M
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 |
|---|---|---|---|---|---|---|---|
| BSM | Director | 1,026,380 | $13.97 | $14.34M | $3.54M | 34 | 2026-06-02 |
Recent Filings · Page 2 of 4
34 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-10-08 | BSM | Grant (A) | +1,241 | $18.7K | EDGAR |
| 2024-08-15 | BSM | Buy (P) | +34,200 | $500.0K | EDGAR |
| 2024-07-08 | BSM | Grant (A) | +1,196 | $18.7K | EDGAR |
| 2024-04-09 | BSM | Grant (A) | +1,173 | $18.7K | EDGAR |
| 2024-02-27 | BSM | Buy (P) | +3,250 | $50.3K | EDGAR |
| 2024-01-16 | BSM | Grant (A) | +12,307 | $0 | EDGAR |
| 2023-11-17 | BSM | Buy (P) | +44,000 | $762.0K | EDGAR |
| 2023-03-07 | BSM | Buy (P) | +34,250 | $542.8K | EDGAR |
| 2023-01-13 | BSM | Grant (A) | +12,539 | $0 | EDGAR |
| 2022-01-11 | BSM | Grant (A) | +14,115 | $0 | 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.