Mario Schlosser
CIK 1844320 · President of Technology & CTO · last filed 2026-06-05
Mario Schlosser is a President of Technology & CTO who has filed 26 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing, for DUOL, was dated Jun 5, 2026. Across all open-market trades the lifetime net is −$38.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $20.3M 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.
$20.31M
2
26
-$38.62M
Holdings By Company
Recent Filings
26 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-05 | DUOL | Grant (A) | +2,001 | $0 | EDGAR |
| 2026-06-04 | OSCR | Sell (S) | −34,120 | -$748.6K | EDGAR |
| 2026-03-04 | OSCR | Mixed | +164,806 | -$325.8K | EDGAR |
| 2026-01-12 | OSCR | Mixed | — | -$406.6K | EDGAR |
| 2026-01-08 | OSCR | Mixed | — | -$1.31M | EDGAR |
| 2026-01-06 | OSCR | Mixed | −88,168 | -$3.59M | EDGAR |
| 2025-12-30 | OSCR | Sell (S) | −38,835 | -$582.5K | EDGAR |
| 2025-12-18 | DUOL | — | — | $0 | EDGAR |
| 2025-12-04 | OSCR | Sell (S) | −23,965 | -$397.6K | EDGAR |
| 2025-11-13 | OSCR | Mixed | — | -$5.95M | EDGAR |