Profile

Identity, professional record and current appointments.

Overview

Professional record at a glance

A concise summary of information supported by the cited public sources. Missing information is treated as unknown, not as a negative finding.

Current roles
11 current organization shown on this profile
Board positions
11 supported by public sources, 0 supplied by the profile owner
Committee roles
2Roles supported by the sources cited on this profile
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Mario Schlosser has served on Duolingo's Board since July 2024 and is co-founder of Oscar Health, where he currently serves as CTO and President of Technology. He previously served as Oscar's CEO from its founding in December 2012 to April 2023, growing the company to over one million members. He holds a computer science degree from the University of Hannover and an MBA from Harvard Business School.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Governance

Board appointments, committee responsibilities and disclosed relationships.

Board and advisory record

Board service

Sources are shown with each role, education record, or credential.

Director

Duolingo, Inc.

2024-01-01 · current

Confirmed by public sourceView source

Connections

Explore the roles, education and affiliations published in this record.

Duolingo, Inc.

Open Duolingo, Inc. profile →

Director at Duolingo, Inc.

2024-01-01 → End not stated

current · source reported

Observed: 2026-09-17

Duolingo, Inc.Duolingo, Inc.Mario Schlosser

Dashed lines mark past roles. Select a connection to see its dates and sources.

Relationship map

Connected through the public record

Direct relationships from verified facts and published résumé records. Private connections are excluded.

Direct public links only

Only published affiliations are shown here. Private relationships require authorized access.

Experience

Career history, education, credentials and public contributions.

Published record

Featured coverage

Selected publications and public sources used to establish this profile. Inclusion records provenance; it is not an endorsement.

Source 1 · Sec FilingDUOL DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Executive company, Executive title, Cybersecurity experience, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:mario-schlosser-2
Record version
public-0

Sources

Sources and published information

Each item links to the public source used to support it. When sources disagree, the item is clearly marked for review.

AI and ML experience · Source reportedAI and machine learning experience reported in filings1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

Board membership · Source reportedServes on the board of Duolingo, Inc.1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board role · Source reportedBoard role: Director1 source
Verification
Source reported
Confidence
92%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

Committee assignments · Source reportedCommittee assignments: Compensation, Mergers and Acquisitions1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

Cybersecurity experience · Source reportedCybersecurity experience reported in filings1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

Executive company · Source reportedExecutive at Oscar Health, Inc.1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

Executive title · Source reportedExecutive title: Chief Technology Officer and President of Technology1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

Technology background · Source reportedTechnology background reported in filings1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 9, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

View all sources3 records
  1. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 9, 2026

    Supports: AI and ML experience · Board role · Committee assignments · Executive company · Executive title · Cybersecurity experience · Technology background

  2. https://www.sec.gov/Archives/edgar/data/1562088/000156208825000086/duol-20250425.htm

    Sec Proxy · Tier not stated · Reviewed May 8, 2026

    Supports: Director at Duolingo, Inc. (NASDAQ: DUOL)

  3. https://www.sec.gov/Archives/edgar/data/1562088/000156208825000086/duol-20250425.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership