Thomas William Burns
CIK 1644557 · CHAIRMAN & CEO · last filed 2026-06-29
"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
$28.74M
Companies
3
Total Filings
142
Lifetime Open-Market Net
-$104.69M
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 15
142 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 |
|---|---|---|---|---|---|
| 2026-01-20 | GKOS | Mixed | — | -$27.09M | EDGAR |
| 2026-01-16 | GKOS | Notice (144) | −186,945 | -$21.50M | EDGAR |
| 2026-01-08 | GKOS | Notice (144) | −88,055 | -$10.13M | EDGAR |
| 2025-12-31 | GKOS | Tax (F) | −1,098 | -$125.4K | EDGAR |
| 2025-12-15 | GKOS | Grant (A) | +4,168 | $0 | EDGAR |
| 2025-09-24 | GKOS | Tax (F) | −4,059 | -$343.8K | EDGAR |
| 2025-09-22 | GKOS | Mixed | +14,319 | -$91.7K | EDGAR |
| 2025-06-04 | LUNG | Grant (A) | +37,153 | $0 | EDGAR |
| 2025-05-28 | GKOS | Tax (F) | −4,059 | -$393.6K | EDGAR |
| 2025-05-09 | GKOS | Tax (F) | −1,098 | -$96.9K | 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.