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Mark Besca

CIK 1831351 · last filed 2026-06-17

Mark Besca is a corporate insider who has filed 20 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing, for MKL, was dated Jun 17, 2026. Across all open-market trades the lifetime net is +$65.8K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $2.9M 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

$2.89M

Companies

3

Total Filings

20

Lifetime Open-Market Net

$65.8K

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
MKL Director 1,222 $2019.84 $2.47M $65.8K 14 2026-06-17
CLAR Director — $3.27 — $0 3 2026-06-01
LVS Director 8,694 $48.54 $422.0K $0 3 2026-05-18

Recent Filings

20 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
2026-06-17 MKL Other (J) +80 $135.0K EDGAR
2026-06-01 CLAR Grant (A) — $0 EDGAR
2026-05-22 MKL Grant (A) +89 $0 EDGAR
2026-05-18 LVS Grant (A) +3,948 $0 EDGAR
2025-06-02 CLAR Grant (A) — $0 EDGAR
2025-05-23 MKL Grant (A) +88 $0 EDGAR
2025-05-19 LVS Grant (A) +4,746 $0 EDGAR
2025-01-28 LVS Grant (A) — $0 EDGAR
2024-12-09 CLAR Grant (A) — $0 EDGAR
2024-06-17 MKL Other (J) +79 $110.0K EDGAR
Showing 1–10 of 20
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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.