Mark Spurbeck
CIK 1577048 · EVP and CFO · last filed 2026-06-10
"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
$3.48M
Companies
3
Total Filings
57
Lifetime Open-Market Net
-$4.02M
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.
Recent Filings · Page 2 of 6
57 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-12-06 | BTU | Grant (A) | +84 | $1.9K | EDGAR |
| 2024-11-08 | BTU | Sell (S) | −10,000 | -$295.2K | EDGAR |
| 2024-09-06 | BTU | Grant (A) | +88 | $1.9K | EDGAR |
| 2024-06-07 | BTU | Grant (A) | +82 | $1.9K | EDGAR |
| 2024-03-15 | BTU | Grant (A) | +76 | $1.9K | EDGAR |
| 2024-02-23 | BTU | Mixed | +6,826 | -$435.9K | EDGAR |
| 2024-01-11 | BTU | Sell (S) | −4,827 | -$120.4K | EDGAR |
| 2024-01-04 | BTU | Mixed | +6,043 | -$205.9K | EDGAR |
| 2023-12-01 | BTU | Grant (A) | +92 | $2.2K | EDGAR |
| 2023-09-01 | BTU | Grant (A) | +99 | $2.2K | 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.