Derrick Sung
CIK 1670118 · COO and CFO · last filed 2025-12-03
"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
$4.90M
Companies
3
Total Filings
31
Lifetime Open-Market Net
-$5.33M
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 4
31 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-12-16 | LUNG | Sell (S) | −6,000 | -$190.3K | EDGAR |
| 2021-12-03 | LUNG | Sell (S) | −383 | -$12.5K | EDGAR |
| 2021-09-21 | LUNG | Sell (S) | −6,000 | -$224.6K | EDGAR |
| 2021-09-03 | LUNG | Sell (S) | −383 | -$15.4K | EDGAR |
| 2021-06-11 | LUNG | Grant (A) | +17,600 | $0 | EDGAR |
| 2021-04-06 | LUNG | Sell (S) | −10,000 | -$473.6K | EDGAR |
| 2019-03-18 | IRTC | Grant (A) | +1,725 | $0 | EDGAR |
| 2019-03-05 | IRTC | Tax (F) | −1,081 | -$105.2K | EDGAR |
| 2019-03-01 | IRTC | Grant (A) | +1,725 | $0 | EDGAR |
| 2019-01-31 | IRTC | Mixed | — | -$97.5K | 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.