Derrick Sung
CIK 1670118 · COO and CFO · last filed 2025-12-03
Derrick Sung is a COO and CFO who has filed 32 SEC Form 4 insider transactions across 3 companies since 2017. The most recent filing, for LUNG, was dated Dec 3, 2025. Across all open-market trades the lifetime net is −$5.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.8M 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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
IRTC price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
650 TOWNSEND STREET, SUITE 380
SAN FRANCISCO, CA 94103
Holdings By Company
Recent Filings
32 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-12-03 | LUNG | Grant (A) | +1,200,000 | $0 | EDGAR |
| 2024-01-31 | LUNG | Notice (144) | −25,000 | -$350.0K | EDGAR |
| 2023-09-06 | LUNG | Sell (S) | −4,219 | -$42.2K | EDGAR |
| 2023-06-02 | LUNG | Sell (S) | −4,222 | -$48.5K | EDGAR |
| 2023-03-03 | LUNG | Mixed | +136,736 | -$13.9K | EDGAR |
| 2022-12-05 | LUNG | Sell (S) | −1,069 | -$6.3K | EDGAR |
| 2022-11-14 | LUNG | Exer (M) | +10,000 | $22.0K | EDGAR |
| 2022-09-06 | LUNG | Sell (S) | −1,082 | -$19.3K | EDGAR |
| 2022-08-09 | MINERVA SURGICAL INC (UTRS) Delisted | Grant (A) | +86,956 | $200.0K | EDGAR |
| 2022-06-03 | LUNG | Sell (S) | −1,065 | -$19.2K | EDGAR |
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.