Oscar Health Inc
Ownership
Ownership Structure
Who owns Oscar Health Inc (OSCR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.4% of the shares are freely tradable; institutional investors hold 67.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 6.67 | 20,587,428 | +18.9 | 06/30/2026 |
| T. Rowe Price Investment Management,Inc. | 4.22 | 13,035,486 | +11.9 | 06/30/2026 |
| D. E. Shaw & Co LP | 4.10 | 12,643,617 | +130.5 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 3.57 | 11,029,424 | +4.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.43 | 10,579,437 | -1.8 | 06/30/2026 |
| American Century Companies Inc | 2.93 | 9,055,242 | +28.8 | 06/30/2026 |
| Jane Street Group LLC | 2.06 | 6,365,039 | +119.2 | 06/30/2026 |
| Thrive Capital Management, LLC(NY) | 2.06 | 6,343,617 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.53 | 7,817,053 | +2.7 | 09/30/2026 |
| iShares Russell 2000 ETF | 2.04 | 6,283,032 | -0.7 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Blackley Richard Scott | Chief Financial Officer | 1,102,358 | 33,511,683 $ | Aug 18, 2026 | both |
| Schlosser Mario | Director | 449,444 | 13,663,098 $ | Sep 3, 2026 | direct |
| Liang Janet | President, Oscar Insurance | 248,697 | 7,560,389 $ | Sep 3, 2026 | direct |
| Baltrus Victoria | Chief Accounting Officer | 213,631 | 6,494,382 $ | Sep 3, 2026 | direct |
| McAnaney Adam | Chief Legal Officer | 209,004 | 6,353,722 $ | Sep 3, 2026 | direct |
| Wittman Vanessa Ames | Director | 112,121 | 3,408,478 $ | Sep 18, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 18, 2026 | Wittman Vanessa Ames | Director | Sell | 25,000 | 32.24 | 806,000 |
| Sep 18, 2026 | Kushner Joshua | Co-Founder and Vice Chairman | Other | 164,218 | 0.00 | – |
| Sep 18, 2026 | Kushner Joshua | Co-Founder and Vice Chairman | Other | 4,855,810 | 0.00 | – |
| Sep 18, 2026 | Kushner Joshua | Co-Founder and Vice Chairman | Other | 1,323,589 | 0.00 | – |
| Sep 18, 2026 | Kushner Joshua | Co-Founder and Vice Chairman | Other | 75,520 | 0.00 | – |
| Sep 18, 2026 | Kushner Joshua | Co-Founder and Vice Chairman | Other | 6,268,097 | 0.00 | – |
| Sep 18, 2026 | Thrive Partners II GP, LLC | Director | Other | 164,218 | 0.00 | – |
| Sep 18, 2026 | Thrive Partners II GP, LLC | Director | Other | 4,855,810 | 0.00 | – |
| Sep 18, 2026 | Thrive Partners II GP, LLC | Director | Other | 1,323,589 | 0.00 | – |
| Sep 18, 2026 | Thrive Partners II GP, LLC | Director | Other | 75,520 | 0.00 | – |
| Sep 18, 2026 | Thrive Partners II GP, LLC | Director | Other | 6,268,097 | 0.00 | – |
| Sep 3, 2026 | Baltrus Victoria | Chief Accounting Officer | Sell | 958 | 31.45 | 30,129 |
| Sep 3, 2026 | Schlosser Mario | Director | Sell | 31,422 | 31.45 | 988,222 |
| Sep 3, 2026 | McAnaney Adam | Chief Legal Officer | Sell | 9,092 | 31.45 | 285,943 |
| Sep 3, 2026 | Liang Janet | President, Oscar Insurance | Sell | 10,360 | 31.45 | 325,822 |
| Sep 3, 2026 | Blackley Richard Scott | Chief Financial Officer | Sell | 28,869 | 31.45 | 907,930 |
| Aug 28, 2026 | Schlosser Mario | Director | Sell | 150,000 | 30.79 | 4,618,500 |
| Aug 28, 2026 | Schlosser Mario | Director | Other | 150,000 | – | – |
| Aug 27, 2026 | Schlosser Mario | Director | Sell | 600,000 | 30.34 | 18,204,000 |
| Aug 27, 2026 | Schlosser Mario | Director | Other | 600,000 | – | – |
| Aug 18, 2026 | Blackley Richard Scott | Chief Financial Officer | Sell | 18,750 | 31.74 | 595,125 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.