Oscar Health director sells 34,120 shares

Oscar Health director Mario Schlosser reported selling a total of 34,120 shares of Class A common stock on June 2, 2026 in two open-market transactions.

Rhea-AI Filing Summary

Oscar Health director Mario Schlosser reported selling a total of 34,120 shares of Class A common stock on June 2, 2026 in two open-market transactions. He sold 9,668 shares at a weighted average price of $22.45 and 24,452 shares at a weighted average price of $21.74.

According to the footnotes, these sales were effected under a Rule 10b5-1 instruction letter entered into on August 8, 2025, to satisfy his tax withholding obligations arising from the vesting of previously granted equity awards. The prices reflect multiple trades within stated ranges on that date.

Insider Trade Summary 10b5-1

Net Seller: 34,120 shares

Net Sell 2 txns

Insider Schlosser Mario

Role Director

Sold 34,120 shs ($749K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	24,452	$21.74	$532K
Sale	Class A Common Stock	9,668	$22.45	$217K

Holdings After Transaction: Class A Common Stock — 480,866 shares (Direct)

Footnotes (4)

1. F1. The sale was effected pursuant to a Rule 10b5-1 instruction letter entered into on August 8, 2025 to satisfy the Reporting Person's tax withholding obligation upon the vesting of previously granted equity awards.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.03 to $22.02, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.
3. F3. Includes shares to be issued in connection with the vesting of one or more restricted stock units.
4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.03 to $22.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

Key Figures

Shares sold total: 34,120 shares First block sold: 9,668 shares at $22.45 Second block sold: 24,452 shares at $21.74 +3 more

6 metrics

Shares sold total 34,120 shares Total Class A common shares sold on June 2, 2026

First block sold 9,668 shares at $22.45 Weighted average sale price for one transaction

Second block sold 24,452 shares at $21.74 Weighted average sale price for second transaction

Lower price range $21.03–$22.02 Range of prices for one set of trades

Higher price range $22.03–$22.96 Range of prices for the other set of trades

Net shares sold 34,120 shares Net selling activity per transaction summary

Key Terms

Rule 10b5-1 instruction letter, weighted average price, restricted stock units, open-market sale

4 terms

Rule 10b5-1 instruction letter regulatory

"The sale was effected pursuant to a Rule 10b5-1 instruction letter entered into on August 8, 2025"

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

restricted stock units financial

"Includes shares to be issued in connection with the vesting of one or more restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did Oscar Health (OSCR) disclose in this Form 4?

Oscar Health disclosed that director Mario Schlosser sold 34,120 shares of Class A common stock on June 2, 2026, in two open-market transactions, as reported in a Form 4 insider trading report filed with the Securities and Exchange Commission.

How many Oscar Health (OSCR) shares did Mario Schlosser sell and at what prices?

Mario Schlosser sold 9,668 Oscar Health Class A shares at a weighted average price of $22.45 and 24,452 shares at a weighted average price of $21.74, with individual trade prices falling within specified ranges disclosed in the Form 4 footnotes.

Why did Oscar Health director Mario Schlosser sell shares according to the Form 4?

The Form 4 states the sales were executed under a Rule 10b5-1 instruction letter to satisfy Mario Schlosser’s tax withholding obligations related to the vesting of previously granted equity awards, indicating the transactions were tied to compensation and tax requirements.

Were Mario Schlosser’s Oscar Health (OSCR) stock sales pre-planned?

Yes. The Form 4 footnotes explain that the share sales were effected pursuant to a Rule 10b5-1 instruction letter entered into on August 8, 2025, meaning the trades were pre-arranged under an established trading plan rather than discretionary same-day decisions.

What price ranges are associated with Mario Schlosser’s Oscar Health share sales?

The Form 4 notes that one block of Oscar Health shares was sold in transactions ranging from $21.03 to $22.02, while the other block was sold in trades ranging from $22.03 to $22.96, with reported prices reflecting weighted averages of those ranges.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/04/2026 - 04:16 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Schlosser Mario

(Last) (First) (Middle)

75 VARICK STREET, 5TH FLOOR

(Street)

NEW YORK NEW YORK 10013

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Oscar Health, Inc. [ OSCR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	06/02/2026		S		24,452(1)	D	$21.74(2)	490,534(3)	D
Class A Common Stock	06/02/2026		S		9,668(1)	D	$22.45(4)	480,866(3)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sale was effected pursuant to a Rule 10b5-1 instruction letter entered into on August 8, 2025 to satisfy the Reporting Person's tax withholding obligation upon the vesting of previously granted equity awards.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.03 to $22.02, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

3. Includes shares to be issued in connection with the vesting of one or more restricted stock units.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.03 to $22.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price at which the transactions were effected.

Remarks:

	/s/ Melissa Curtin, Attorney-in-fact	06/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)