Mario Schlosser

CIK 1844320 · President of Technology & CTO · last filed 2026-07-14

"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

$15.63M

Companies

2

Total Filings

47

Lifetime Open-Market Net

-$70.29M

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 4,262 $132.75 $565.8K $0 5 2026-07-14
OSCR President of Technology & CTO 480,866 $31.33 $15.07M -$70.29M 24 2026-07-06

Recent Filings · Page 4 of 5

47 filings
Insider 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
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
2024-12-02 OSCR Notice (144) −7,128 -$123.5K EDGAR
2024-09-04 OSCR Mixed +8,298 -$109.0K EDGAR
2024-09-03 OSCR Notice (144) −6,725 -$123.1K EDGAR
2024-07-03 DUOL Grant (A) +1,742 $0 EDGAR
2024-06-04 OSCR Mixed +8,451 -$115.9K EDGAR
2024-06-03 OSCR Notice (144) −6,389 -$130.5K EDGAR
2024-03-12 OSCR Grant (A) $0 EDGAR
Showing 3140 of 47
Page 4 of 5
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.