A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 10 filings in this group are Form 4s for Oscar Health, Inc.
The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.
Across the 10 insider filings shown, the breakdown is 8 open-market sale and 2 other reported transaction. 8 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.
Form 4
Open-market sale
Insider Selling
2026-09-22
OSCR insider WITTMAN VANESSA AMES (Director) sold 25,000 shares (~$806.0K)
WITTMAN VANESSA AMES, listed as Director at Oscar Health, Inc., reported an open-market sale of 25,000 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
25,000 |
$32.24 |
$806.0K |
Filing: Form 4 (Insider Transaction)
Insider: WITTMAN VANESSA AMES (Director)
Shares: 25,000
Est. Value: $806.0K
Form 4
Other reported transaction
Tax / Compensation Filing
2026-09-18
OSCR insider Form 4 filed for equity award, exercise, or tax withholding
Kushner Joshua (Director, Co-Founder and Vice Chairman, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
J |
Other transaction
|
6,268,097 |
— |
— |
J |
Other transaction
|
75,520 |
— |
— |
J |
Other transaction
|
1,323,589 |
— |
— |
J |
Other transaction
|
4,855,810 |
— |
— |
J |
Other transaction
|
164,218 |
— |
— |
J |
Other transaction
|
1,323,589 |
— |
— |
J |
Other transaction
|
4,855,810 |
— |
— |
J |
Other transaction
|
164,218 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
1,323,589 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
4,855,810 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
164,218 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
6,268,097 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
75,520 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Kushner Joshua (Director, Co-Founder and Vice Chairman, 10% Owner)
Shares: 19,030,851
Form 4
Other reported transaction
Tax / Compensation Filing
2026-09-18
OSCR insider Form 4 filed for equity award, exercise, or tax withholding
Thrive Partners II GP, LLC (Director, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
J |
Other transaction
|
6,268,097 |
— |
— |
J |
Other transaction
|
75,520 |
— |
— |
J |
Other transaction
|
1,323,589 |
— |
— |
J |
Other transaction
|
4,855,810 |
— |
— |
J |
Other transaction
|
164,218 |
— |
— |
J |
Other transaction
|
1,323,589 |
— |
— |
J |
Other transaction
|
4,855,810 |
— |
— |
J |
Other transaction
|
164,218 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
1,323,589 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
4,855,810 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
164,218 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
6,268,097 |
— |
— |
J |
Other transaction
derivative · Class B Common Stock
|
75,520 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Thrive Partners II GP, LLC (Director, 10% Owner)
Shares: 19,030,851
Form 4
Open-market sale
Insider Selling
2026-09-08
OSCR insider Liang Janet (President, Oscar Insurance) sold 10,360 shares (~$325.8K)
Liang Janet, listed as President, Oscar Insurance at Oscar Health, Inc., reported an open-market sale of 10,360 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
10,360 |
$31.45 |
$325.8K |
Filing: Form 4 (Insider Transaction)
Insider: Liang Janet (President, Oscar Insurance)
Shares: 10,360
Est. Value: $325.8K
Form 4
Open-market sale
Insider Selling
2026-09-08
OSCR insider Baltrus Victoria (Chief Accounting Officer) sold 958 shares (~$30.1K)
Baltrus Victoria, listed as Chief Accounting Officer at Oscar Health, Inc., reported an open-market sale of 958 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
958 |
$31.45 |
$30.1K |
Filing: Form 4 (Insider Transaction)
Insider: Baltrus Victoria (Chief Accounting Officer)
Shares: 958
Est. Value: $30.1K
Form 4
Open-market sale
Insider Selling
2026-09-08
OSCR insider Blackley Richard Scott (Chief Financial Officer) sold 28,869 shares (~$907.9K)
Blackley Richard Scott, listed as Chief Financial Officer at Oscar Health, Inc., reported an open-market sale of 28,869 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
28,869 |
$31.45 |
$907.9K |
Filing: Form 4 (Insider Transaction)
Insider: Blackley Richard Scott (Chief Financial Officer)
Shares: 28,869
Est. Value: $907.9K
Form 4
Open-market sale
Insider Selling
2026-09-08
OSCR insider McAnaney Adam (Chief Legal Officer) sold 9,092 shares (~$285.9K)
McAnaney Adam, listed as Chief Legal Officer at Oscar Health, Inc., reported an open-market sale of 9,092 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
9,092 |
$31.45 |
$285.9K |
Filing: Form 4 (Insider Transaction)
Insider: McAnaney Adam (Chief Legal Officer)
Shares: 9,092
Est. Value: $285.9K
Form 4
Open-market sale
Insider Selling
2026-09-08
OSCR insider Schlosser Mario (Director) sold 31,422 shares (~$988.2K)
Schlosser Mario, listed as Director at Oscar Health, Inc., reported an open-market sale of 31,422 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
31,422 |
$31.45 |
$988.2K |
Filing: Form 4 (Insider Transaction)
Insider: Schlosser Mario (Director)
Shares: 31,422
Est. Value: $988.2K
Form 4
Open-market sale
Insider Selling
2026-08-31
OSCR insider Schlosser Mario (Director) sold 750,000 shares (~$22.82M)
Schlosser Mario, listed as Director at Oscar Health, Inc., reported an open-market sale of 750,000 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
600,000 |
— |
— |
S |
Open-market sale
|
600,000 |
$30.34 |
$18.20M |
C |
Derivative conversion
|
150,000 |
— |
— |
S |
Open-market sale
|
150,000 |
$30.79 |
$4.62M |
M |
Option exercise
derivative · Stock Option (Right to Buy)
|
600,000 |
— |
— |
M |
Option exercise
derivative · Class B Common Stock
|
600,000 |
$9.75 |
$5.85M |
C |
Derivative conversion
derivative · Class B Common Stock
|
600,000 |
— |
— |
M |
Option exercise
derivative · Stock Option (Right to Buy)
|
150,000 |
— |
— |
M |
Option exercise
derivative · Class B Common Stock
|
150,000 |
$9.75 |
$1.46M |
C |
Derivative conversion
derivative · Class B Common Stock
|
150,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Schlosser Mario (Director)
Shares: 750,000
Est. Value: $22.82M
Form 4
Open-market sale
Insider Selling
2026-08-20
OSCR insider Blackley Richard Scott (Chief Financial Officer) sold 18,750 shares (~$595.1K)
Blackley Richard Scott, listed as Chief Financial Officer at Oscar Health, Inc., reported an open-market sale of 18,750 OSCR shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
18,750 |
$31.74 |
$595.1K |
Filing: Form 4 (Insider Transaction)
Insider: Blackley Richard Scott (Chief Financial Officer)
Shares: 18,750
Est. Value: $595.1K