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Mario Schlosser

Director at DuolingoDuolingo
Board

About Mario Schlosser

Mario Schlosser (age 46) is an independent Class I director of Duolingo, appointed in July 2024 with a current term running to the 2028 annual meeting. He is co‑founder of Oscar Health, Inc. and currently serves as its Chief Technology Officer and President of Technology; previously he was Oscar’s CEO (2012–2023). He holds a computer science degree (highest distinction) from the University of Hannover and an MBA from Harvard Business School, and has published 10 computer science papers including on trust in randomized networks .

Past Roles

OrganizationRoleTenureCommittees/Impact
Oscar Health, Inc.Chief Executive OfficerDec 2012 – Apr 2023Led company growth to >1M members
Oscar Health, Inc.Chief Technology Officer & President of TechnologyApr 2023 – presentOversees product and engineering
Vostu, Ltd.Co‑founder; led analytics and game designAug 2006 – Nov 2012Consumer/social gaming operating experience
Bridgewater AssociatesSenior Investment AssociateAug 2007 – Mar 2010Investing/analytics background
Stanford University (CS)Visiting researcherPrior to OscarAlgorithms for information dissemination in dynamic networks

External Roles

OrganizationRoleSinceNotes
Oscar Health, Inc. (public)DirectorDec 2012Public company directorship (OSCR)
Fraunhofer Institute for Applied Information TechnologyBoard memberN/ATechnology governance
Tech:NYCBoard memberN/AIndustry advocacy
One Mind At WorkGuiding CouncilN/AWorkforce mental health

Board Governance

  • Independence: The Board determined Schlosser is independent under Nasdaq rules (8 of 10 directors independent) .
  • Committee assignments and chair roles (2025 proxy):
    • Compensation Committee: Chair (members: Schlosser, Sara Clemens, John Lilly, Bonnie Ross) .
    • Mergers & Acquisitions Committee: Member (with Clemens, Lilly, Ross) .
  • Committee expertise/process:
    • Compensation Committee retains independent consultant (Compensia); no conflicts identified for 2024; scope includes executive, employee, and director compensation; authority to hire advisors; funding provided .
  • Meetings and attendance:
    • 2024 meetings held: Board (5), Audit (4), Compensation (4), Nominating & Governance (3), M&A (4). Each incumbent director then‑serving attended at least 75% of aggregate Board and applicable committee meetings in 2024 .
  • Board structure and term: Classified board; Schlosser is Class I with term expiring at 2028 annual meeting, subject to re‑election .
  • Executive sessions: Independent directors meet in private session at least twice per year .
  • Shareholder support (election results, 2025 meeting): Votes For 156,145,394; Withheld 101,958; Broker Non‑Votes 3,020,619 .

Fixed Compensation (Director)

ComponentAmountPeriod/Terms
Cash fees paid$8,750Reported 2024 director cash compensation (pro‑rated partial year)
Equity awards (grant‑date fair value)$340,091Reported 2024 director stock awards (RSUs)
Total director compensation$348,8412024 total
Standard annual cash retainers (policy)Board member: $35,000; Compensation Chair: $15,000; Compensation member: $7,500; M&A member: $4,000; Audit Chair: $20,000; N&G Chair: $8,000Effective 2024 program; additional Non‑Executive Chair retainer $25,000

Notes:

  • Under the 2024 Director Compensation Program, initial RSU grant sized at $360,000 at appointment; annual RSU grant sized at $180,000 at each annual meeting; no separate meeting fees disclosed .

Performance Compensation (Director)

AwardGrant dateSharesVestingNotes
Initial RSU grant (upon joining Board)Jul 20241,742Vests in three substantially equal annual installmentsInitial Grant sized per policy; reported as unvested as of 12/31/2024
Annual RSU grantJun 11, 2025379Vests on/before next annual meeting (one‑year)Reported on Form 4; annual grant structure per policy
  • Director equity is time‑based RSUs; no performance‑metric‑based vesting for directors. Change‑in‑control: director RSUs vest in full immediately prior to a change in control under the plan .

Other Directorships & Interlocks

  • Current public company board: Oscar Health, Inc. (OSCR) — director since 2012 .
  • No interlocks or related‑party transactions involving Schlosser are disclosed in the “Certain Transactions with Related Persons” section of the 2025 proxy (the section describes policy and indemnification; no Schlosser‑specific transactions presented) .

Expertise & Qualifications

  • Corporate governance, financial literacy, information services/technology, cybersecurity and data privacy, business development, strategic planning; senior leadership across technology companies .
  • Education: Computer Science, University of Hannover (highest distinction); MBA, Harvard Business School .
  • Publications: Author of 10 computer science publications, including a seminal paper on trust in randomized networks .

Equity Ownership

ItemDetail
Beneficial ownershipLess than 1% of outstanding shares as of April 15, 2025 (row shows “—, *”)
Unvested director RSUs outstanding (12/31/2024)1,742 RSUs
2025 Annual RSU grant379 RSUs granted 6/11/2025 (reported 6/20/2025)
Hedging/pledgingCompany policy prohibits hedging; pledging prohibited unless specifically approved; policy applies to directors

Insider transactions (Forms 4):

DateTypeSecurityAmountPriceNote
Jul 3, 2024Initial RSU grant at appointmentClass A RSUs1,742Director initial grant (RSUs)
Jun 11, 2025 (filed Jun 20)Annual RSU grantClass A RSUs379Annual meeting grant (RSUs)

Governance Assessment

  • Board effectiveness signals: Independent director; chairs Compensation Committee with independent consultant oversight (Compensia), no consultant conflicts reported; committees met regularly (Comp: 4x in 2024). Strong shareholder support in 2025 election (156.1M FOR vs 0.1M WITHHELD) .
  • Independence and attendance: Board affirmatively deems him independent; all incumbent directors attended ≥75% of meetings in 2024; independent directors meet in executive session at least twice annually .
  • Compensation/ownership alignment: Director pay is equity‑heavy (2024: $340,091 equity vs $8,750 cash), with time‑based RSUs and standard chair/member retainers; anti‑hedging policy in place; change‑in‑control vests director equity, aligning incentives in transactions .
  • Related‑party/conflicts: No related‑party transactions involving Schlosser are disclosed; Audit Committee oversees related‑party transaction approvals under adopted policy .
  • Say‑on‑pay and investor engagement context: Company holds annual say‑on‑pay; Compensation Committee (which he chairs) oversees human capital and compensation philosophy .

RED FLAGS to monitor:

  • External time commitments: Concurrent CTO/President of Technology role at Oscar Health and multiple external boards; while permissible and independence affirmed, investors often monitor time allocation for committee chairs .
  • Change‑in‑control acceleration: Full vesting of director RSUs at change‑in‑control could be viewed as entrenchment risk by some investors, though it is a common market practice .