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Mark Spurbeck

CIK 1577048 · EVP and CFO · last filed 2026-06-10

Mark Spurbeck is an EVP and CFO who has filed 61 SEC Form 4 insider transactions across 3 companies since 2013. The most recent filing shows the insider was granted $2.5K of BTU on Jun 10, 2026. Across all open-market trades the lifetime net is −$4.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.9M across reported positions.

"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

$3.88M

Companies

3

Total Filings

61

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.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
BTU EVP and CFO 68,560 $29.10 $2.00M -$3.59M 41 2026-06-10
CDE VP, Finance & CAO 93,271 $20.20 $1.88M -$431.1K 10 2018-01-22
Coeur Mining, Inc. (CDE.WS) Delisted Vice President, Finance 45,102 — — $0 6 2015-05-26

Recent Filings

61 filings
Insider 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
2026-06-10 BTU Grant (A) +89 $2.5K EDGAR
2026-03-12 BTU Grant (A) +77 $2.5K EDGAR
2026-03-06 BTU Sell (S) −30,000 -$1.07M EDGAR
2026-03-04 BTU Notice (144) −30,000 -$1.07M EDGAR
2026-02-20 BTU Mixed +9,587 -$251.3K EDGAR
2026-01-06 BTU Mixed +6,815 -$239.6K EDGAR
2025-12-05 BTU Grant (A) +92 $2.7K EDGAR
2025-09-05 BTU Grant (A) +159 $2.7K EDGAR
2025-06-06 BTU Grant (A) +312 $4.2K EDGAR
2025-03-13 BTU Grant (A) +84 $1.2K EDGAR
Showing 1–10 of 61
Page 1 of 7
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.