Mario Schlosser

CIK 1844320 · President of Technology & CTO · last filed 2026-06-05

"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

$20.31M

Companies

2

Total Filings

26

Lifetime Open-Market Net

-$38.62M

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.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
DUOL Director 4,122 $122.63 $505.5K $0 4 2026-06-05
OSCR President of Technology & CTO 700,638 $28.26 $19.80M -$38.62M 22 2026-06-04

Recent Filings · Page 2 of 3

26 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2025-09-24 OSCR Mixed -$7.28M EDGAR
2025-09-04 OSCR Tax (F) −23,879 -$397.8K EDGAR
2025-06-20 DUOL Grant (A) +379 $0 EDGAR
2025-06-04 OSCR Tax (F) −23,879 -$329.5K EDGAR
2025-03-07 OSCR Grant (A) +172,269 $0 EDGAR
2025-03-04 OSCR Tax (F) −7,970 -$116.4K EDGAR
2024-12-03 OSCR Mixed +7,896 -$117.8K EDGAR
2024-09-04 OSCR Mixed +8,298 -$109.0K EDGAR
2024-07-03 DUOL Grant (A) +1,742 $0 EDGAR
2024-06-04 OSCR Mixed +8,451 -$115.9K EDGAR
Showing 1120 of 26
Page 2 of 3
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.