Mark Donald Lyons
CIK 1359049 · EVP, Interim CFO, Act & Prt Mg · last filed 2023-01-18
"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
$63.68M
Companies
3
Total Filings
99
Lifetime Open-Market Net
-$30.42M
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 9 of 10
99 filingsInsider 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 |
|---|---|---|---|---|---|
| 2011-07-28 | ACGL | Sell (S) | −8,800 | -$301.4K | EDGAR |
| 2011-06-17 | ACGL | Sell (S) | −3,000 | -$97.6K | EDGAR |
| 2011-05-10 | ACGL | Grant (A) | +6,300 | $0 | EDGAR |
| 2011-04-29 | ACGL | Sell (S) | −3,000 | -$307.0K | EDGAR |
| 2010-11-09 | ACGL | Sell (S) | −1,500 | -$133.8K | EDGAR |
| 2010-09-10 | ACGL | Sell (S) | −2,500 | -$202.1K | EDGAR |
| 2010-07-29 | ACGL | Sell (S) | −4,000 | -$310.0K | EDGAR |
| 2010-05-18 | ACGL | Sell (S) | −2,000 | -$150.5K | EDGAR |
| 2010-05-13 | ACGL | Tax (F) | −1,065 | -$80.1K | EDGAR |
| 2010-05-07 | ACGL | Grant (A) | +8,000 | $0 | EDGAR |
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.
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.