Follow the people · Insider
Mario Schlosser
Mario Schlosser files insider transactions with the SEC as a president of technology & cto of Oscar Health (OSCR). We hold 11 disclosed purchases and sales filed since 5 March 2021, 5 of them in the last 90 days.
- Files forOSCR
- Disclosed buys and sells11 in all, 5 in the last 90 days
- Last disclosure8 September 2026
Positions held
2 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 5 March 2021 — 3 September 2026President of Technology & CTO · Oscar Health (OSCR)123 Form 4 lines · source: SEC Form 4
- Filed 1 July 2024 — 10 July 2026Director · Duolingo (DUOL)4 Form 4 lines · source: SEC Form 4
Everything they disclosed
120 entries, newest first — one per disclosure report, one per Form 4 line- ▼ sold on the open market 31,422 shares of Oscar HealthSEC Form 48 September 2026Class A Common Stock · traded 3 September 2026 · filed 8 September 2026
- converted 600,000 shares of Oscar HealthSEC Form 431 August 2026Class A Common Stock · traded 27 August 2026 · filed 31 August 2026
- converted 150,000 shares of Oscar Health (a derivative holding)SEC Form 431 August 2026Class B Common Stock · traded 28 August 2026 · filed 31 August 2026
- ▼ sold on the open market 600,000 shares of Oscar HealthSEC Form 431 August 2026Class A Common Stock · traded 27 August 2026 · filed 31 August 2026
- converted 150,000 shares of Oscar HealthSEC Form 431 August 2026Class A Common Stock · traded 28 August 2026 · filed 31 August 2026
- ▼ sold on the open market 150,000 shares of Oscar HealthSEC Form 431 August 2026Class A Common Stock · traded 28 August 2026 · filed 31 August 2026
- exercised options over 600,000 shares of Oscar Health (a derivative holding)SEC Form 431 August 2026Stock Option (Right to Buy) · traded 27 August 2026 · filed 31 August 2026
- exercised options over 600,000 shares of Oscar Health (a derivative holding)SEC Form 431 August 2026Class B Common Stock · traded 27 August 2026 · filed 31 August 2026
- converted 600,000 shares of Oscar Health (a derivative holding)SEC Form 431 August 2026Class B Common Stock · traded 27 August 2026 · filed 31 August 2026
- exercised options over 150,000 shares of Oscar Health (a derivative holding)SEC Form 431 August 2026Stock Option (Right to Buy) · traded 28 August 2026 · filed 31 August 2026
- exercised options over 150,000 shares of Oscar Health (a derivative holding)SEC Form 431 August 2026Class B Common Stock · traded 28 August 2026 · filed 31 August 2026
- was granted 140 shares of DuolingoSEC Form 414 July 2026Class A Common Stock · traded 10 July 2026 · filed 14 July 2026
- converted 47,500 shares of Oscar HealthSEC Form 46 July 2026Class A Common Stock · traded 1 July 2026 · filed 6 July 2026
- ▼ sold on the open market 3,600 shares of Oscar HealthSEC Form 46 July 2026Class A Common Stock · traded 1 July 2026 · filed 6 July 2026
- ▼ sold on the open market 13,672 shares of Oscar HealthSEC Form 46 July 2026Class A Common Stock · traded 1 July 2026 · filed 6 July 2026
- ▼ sold on the open market 30,228 shares of Oscar HealthSEC Form 46 July 2026Class A Common Stock · traded 1 July 2026 · filed 6 July 2026
- converted 47,500 shares of Oscar Health (a derivative holding)SEC Form 46 July 2026Class B Common Stock · traded 1 July 2026 · filed 6 July 2026
- converted 880,000 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 16,306 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 33,592 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 102 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 47,500 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 15,491 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 31,912 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 97 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- exercised options over 660,000 shares of Oscar Health (a derivative holding)SEC Form 425 June 2026Stock Option (Right to Buy) · traded 23 June 2026 · filed 25 June 2026
- exercised options over 660,000 shares of Oscar Health (a derivative holding)SEC Form 425 June 2026Class B Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 880,000 shares of Oscar Health (a derivative holding)SEC Form 425 June 2026Class B Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 286,988 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 50,000 shares of Oscar Health (a derivative holding)SEC Form 425 June 2026Class B Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 50,000 shares of Oscar Health (a derivative holding)SEC Form 425 June 2026Class B Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 47,500 shares of Oscar Health (a derivative holding)SEC Form 425 June 2026Class B Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 591,213 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 1,799 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 50,000 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 16,307 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 33,591 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 102 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- converted 50,000 shares of Oscar HealthSEC Form 425 June 2026Class A Common Stock · traded 23 June 2026 · filed 25 June 2026
- was granted 2,001 shares of DuolingoSEC Form 45 June 2026Class A Common Stock · traded 3 June 2026 · filed 5 June 2026
- ▼ sold on the open market 24,452 shares of Oscar HealthSEC Form 44 June 2026Class A Common Stock · traded 2 June 2026 · filed 4 June 2026
- ▼ sold on the open market 9,668 shares of Oscar HealthSEC Form 44 June 2026Class A Common Stock · traded 2 June 2026 · filed 4 June 2026
- was granted 189,141 shares of Oscar HealthSEC Form 44 March 2026Class A Common Stock · traded 2 March 2026 · filed 4 March 2026
- ▼ sold on the open market 24,335 shares of Oscar HealthSEC Form 44 March 2026Class A Common Stock · traded 2 March 2026 · filed 4 March 2026
- was granted 189,141 shares of Oscar HealthSEC Form 44 March 2026Class A Common Stock · traded 2 March 2026 · filed 4 March 2026
- ▼ sold on the open market 24,335 shares of Oscar HealthSEC Form 44 March 2026Class A Common Stock · traded 2 March 2026 · filed 4 March 2026
- converted 23,038 shares of Oscar HealthSEC Form 412 January 2026Class A Common Stock · traded 8 January 2026 · filed 12 January 2026
- ▼ sold on the open market 23,038 shares of Oscar HealthSEC Form 412 January 2026Class A Common Stock · traded 8 January 2026 · filed 12 January 2026
- converted 23,038 shares of Oscar Health (a derivative holding)SEC Form 412 January 2026Class B Common Stock · traded 8 January 2026 · filed 12 January 2026
- converted 23,038 shares of Oscar Health (a derivative holding)SEC Form 412 January 2026Class B Common Stock · traded 8 January 2026 · filed 12 January 2026
- converted 23,038 shares of Oscar HealthSEC Form 412 January 2026Class A Common Stock · traded 8 January 2026 · filed 12 January 2026
- ▼ sold on the open market 23,038 shares of Oscar HealthSEC Form 412 January 2026Class A Common Stock · traded 8 January 2026 · filed 12 January 2026
- converted 76,962 shares of Oscar HealthSEC Form 48 January 2026Class A Common Stock · traded 6 January 2026 · filed 8 January 2026
- ▼ sold on the open market 76,962 shares of Oscar HealthSEC Form 48 January 2026Class A Common Stock · traded 6 January 2026 · filed 8 January 2026
- converted 76,962 shares of Oscar Health (a derivative holding)SEC Form 48 January 2026Class B Common Stock · traded 6 January 2026 · filed 8 January 2026
- converted 76,962 shares of Oscar Health (a derivative holding)SEC Form 48 January 2026Class B Common Stock · traded 6 January 2026 · filed 8 January 2026
- converted 76,962 shares of Oscar HealthSEC Form 48 January 2026Class A Common Stock · traded 6 January 2026 · filed 8 January 2026
- ▼ sold on the open market 76,962 shares of Oscar HealthSEC Form 48 January 2026Class A Common Stock · traded 6 January 2026 · filed 8 January 2026
- converted 59,800 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 2 January 2026 · filed 6 January 2026
- ▼ sold on the open market 137,933 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 2 January 2026 · filed 6 January 2026
- converted 86,893 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 5 January 2026 · filed 6 January 2026
- converted 59,800 shares of Oscar Health (a derivative holding)SEC Form 46 January 2026Class B Common Stock · traded 2 January 2026 · filed 6 January 2026
- converted 86,893 shares of Oscar Health (a derivative holding)SEC Form 46 January 2026Class B Common Stock · traded 5 January 2026 · filed 6 January 2026
- ▼ sold on the open market 96,928 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 5 January 2026 · filed 6 January 2026
- converted 59,800 shares of Oscar Health (a derivative holding)SEC Form 46 January 2026Class B Common Stock · traded 2 January 2026 · filed 6 January 2026
- converted 86,893 shares of Oscar Health (a derivative holding)SEC Form 46 January 2026Class B Common Stock · traded 5 January 2026 · filed 6 January 2026
- converted 59,800 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 2 January 2026 · filed 6 January 2026
- ▼ sold on the open market 137,933 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 2 January 2026 · filed 6 January 2026
- converted 86,893 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 5 January 2026 · filed 6 January 2026
- ▼ sold on the open market 96,928 shares of Oscar HealthSEC Form 46 January 2026Class A Common Stock · traded 5 January 2026 · filed 6 January 2026
- ▼ sold on the open market 38,835 shares of Oscar HealthSEC Form 430 December 2025Class A Common Stock · traded 24 December 2025 · filed 30 December 2025
- ▼ sold on the open market 23,965 shares of Oscar HealthSEC Form 44 December 2025Class A Common Stock · traded 2 December 2025 · filed 4 December 2025
- exercised options over 413,835 shares of Oscar Health (a derivative holding)SEC Form 413 November 2025Stock Option (Right to Buy) · traded 11 November 2025 · filed 13 November 2025
- exercised options over 413,835 shares of Oscar Health (a derivative holding)SEC Form 413 November 2025Class B Common Stock · traded 11 November 2025 · filed 13 November 2025
- converted 286,182 shares of Oscar Health (a derivative holding)SEC Form 413 November 2025Class B Common Stock · traded 11 November 2025 · filed 13 November 2025
- exercised options over 141,330 shares of Oscar Health (a derivative holding)SEC Form 413 November 2025Stock Option (Right to Buy) · traded 12 November 2025 · filed 13 November 2025
- exercised options over 141,330 shares of Oscar Health (a derivative holding)SEC Form 413 November 2025Class B Common Stock · traded 12 November 2025 · filed 13 November 2025
- converted 105,300 shares of Oscar Health (a derivative holding)SEC Form 413 November 2025Class B Common Stock · traded 12 November 2025 · filed 13 November 2025
- converted 286,182 shares of Oscar HealthSEC Form 413 November 2025Class A Common Stock · traded 11 November 2025 · filed 13 November 2025
- ▼ sold on the open market 286,182 shares of Oscar HealthSEC Form 413 November 2025Class A Common Stock · traded 11 November 2025 · filed 13 November 2025
- converted 105,300 shares of Oscar HealthSEC Form 413 November 2025Class A Common Stock · traded 12 November 2025 · filed 13 November 2025
- ▼ sold on the open market 105,300 shares of Oscar HealthSEC Form 413 November 2025Class A Common Stock · traded 12 November 2025 · filed 13 November 2025
- exercised options over 555,165 shares of Oscar Health (a derivative holding)SEC Form 424 September 2025Stock Option (Right to Buy) · traded 22 September 2025 · filed 24 September 2025
- exercised options over 555,165 shares of Oscar Health (a derivative holding)SEC Form 424 September 2025Class B Common Stock · traded 22 September 2025 · filed 24 September 2025
- converted 395,000 shares of Oscar Health (a derivative holding)SEC Form 424 September 2025Class B Common Stock · traded 22 September 2025 · filed 24 September 2025
- converted 395,000 shares of Oscar HealthSEC Form 424 September 2025Class A Common Stock · traded 22 September 2025 · filed 24 September 2025
- ▼ sold on the open market 395,000 shares of Oscar HealthSEC Form 424 September 2025Class A Common Stock · traded 22 September 2025 · filed 24 September 2025
- had shares withheld for tax on 23,879 shares of Oscar HealthSEC Form 44 September 2025Class A Common Stock · traded 2 September 2025 · filed 4 September 2025
- was granted 379 shares of DuolingoSEC Form 420 June 2025Class A Common Stock · traded 11 June 2025 · filed 20 June 2025
- had shares withheld for tax on 23,879 shares of Oscar HealthSEC Form 44 June 2025Class A Common Stock · traded 2 June 2025 · filed 4 June 2025
- was granted 172,269 shares of Oscar HealthSEC Form 47 March 2025Class A Common Stock · traded 5 March 2025 · filed 7 March 2025
- had shares withheld for tax on 7,970 shares of Oscar HealthSEC Form 44 March 2025Class A Common Stock · traded 1 March 2025 · filed 4 March 2025
- exercised options over 14,412 shares of Oscar Health (a derivative holding)SEC Form 43 December 2024Restricted Stock Unit · traded 1 December 2024 · filed 3 December 2024
- exercised options over 14,412 shares of Oscar HealthSEC Form 43 December 2024Class A Common Stock · traded 1 December 2024 · filed 3 December 2024
- ▼ sold on the open market 6,399 shares of Oscar HealthSEC Form 43 December 2024Class A Common Stock · traded 2 December 2024 · filed 3 December 2024
- ▼ sold on the open market 117 shares of Oscar HealthSEC Form 43 December 2024Class A Common Stock · traded 2 December 2024 · filed 3 December 2024
- exercised options over 14,412 shares of Oscar Health (a derivative holding)SEC Form 44 September 2024Restricted Stock Unit · traded 1 September 2024 · filed 4 September 2024
- exercised options over 14,412 shares of Oscar HealthSEC Form 44 September 2024Class A Common Stock · traded 1 September 2024 · filed 4 September 2024
- ▼ sold on the open market 3,198 shares of Oscar HealthSEC Form 44 September 2024Class A Common Stock · traded 3 September 2024 · filed 4 September 2024
- ▼ sold on the open market 1,605 shares of Oscar HealthSEC Form 44 September 2024Class A Common Stock · traded 4 September 2024 · filed 4 September 2024
- ▼ sold on the open market 1,311 shares of Oscar HealthSEC Form 44 September 2024Class A Common Stock · traded 4 September 2024 · filed 4 September 2024
- was granted 1,742 shares of DuolingoSEC Form 43 July 2024Restricted Stock Units · traded 1 July 2024 · filed 3 July 2024
- exercised options over 14,411 shares of Oscar Health (a derivative holding)SEC Form 44 June 2024Restricted Stock Unit · traded 1 June 2024 · filed 4 June 2024
- exercised options over 14,411 shares of Oscar HealthSEC Form 44 June 2024Class A Common Stock · traded 1 June 2024 · filed 4 June 2024
- ▼ sold on the open market 5,808 shares of Oscar HealthSEC Form 44 June 2024Class A Common Stock · traded 3 June 2024 · filed 4 June 2024
- ▼ sold on the open market 152 shares of Oscar HealthSEC Form 44 June 2024Class A Common Stock · traded 4 June 2024 · filed 4 June 2024
- was granted 172,940 shares of Oscar Health (a derivative holding)SEC Form 412 March 2024Class A Common Stock · traded 10 March 2024 · filed 12 March 2024
- was granted 172,940 shares of Oscar Health (a derivative holding)SEC Form 412 March 2024Class A Common Stock · traded 10 March 2024 · filed 12 March 2024
- exercised options over 608,430 shares of Oscar Health (a derivative holding)SEC Form 420 November 2023Stock Option (Right to Buy) · traded 16 November 2023 · filed 20 November 2023
- exercised options over 608,430 shares of Oscar Health (a derivative holding)SEC Form 420 November 2023Class B Common Stock · traded 16 November 2023 · filed 20 November 2023
- converted 390,405 shares of Oscar Health (a derivative holding)SEC Form 420 November 2023Class B Common Stock · traded 16 November 2023 · filed 20 November 2023
- converted 390,405 shares of Oscar HealthSEC Form 420 November 2023Class A Common Stock · traded 16 November 2023 · filed 20 November 2023
- ▼ sold on the open market 390,405 shares of Oscar HealthSEC Form 420 November 2023Class A Common Stock · traded 16 November 2023 · filed 20 November 2023
- exercised options over 415,369 shares of Oscar Health (a derivative holding)SEC Form 417 August 2023Stock Option (Right to Buy) · traded 15 August 2023 · filed 17 August 2023
- exercised options over 415,369 shares of Oscar Health (a derivative holding)SEC Form 417 August 2023Class B Common Stock · traded 15 August 2023 · filed 17 August 2023
- converted 235,000 shares of Oscar Health (a derivative holding)SEC Form 417 August 2023Class B Common Stock · traded 15 August 2023 · filed 17 August 2023
- converted 235,000 shares of Oscar HealthSEC Form 417 August 2023Class A Common Stock · traded 15 August 2023 · filed 17 August 2023
- ▼ sold on the open market 235,000 shares of Oscar HealthSEC Form 417 August 2023Class A Common Stock · traded 15 August 2023 · filed 17 August 2023
- ▲ bought on the open market 57,300 shares of Oscar HealthSEC Form 417 September 2021Class A Common Stock · traded 16 September 2021 · filed 17 September 2021
- exercised options over 17 shares of Oscar Health (a derivative holding)SEC Form 420 August 2021Restricted Stock Units · traded 18 August 2021 · filed 20 August 2021
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.