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 5 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
2023-11-20 OSCR Mixed -$2.78M EDGAR
2023-11-16 OSCR Notice (144) −390,405 -$2.83M EDGAR
2023-08-17 OSCR Mixed -$1.62M EDGAR
2023-08-15 OSCR Notice (144) −235,000 -$1.62M EDGAR
2021-09-17 OSCR Buy (P) +57,300 $1.00M EDGAR
2021-08-20 OSCR Exer (M) +17 $0 EDGAR
2021-03-05 OSCR Mixed −146,514 -$14.29M EDGAR
Showing 4147 of 47
Page 5 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.