Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Kushner Joshua 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 __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Co-Founder and Vice Chairman (Last) (First) (Middle) 75 VARICK STREET, 5TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 09/18/2026 (Street) NEW YORK, NY 10013 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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 09/18/2026 J(1) 6,268,097 D $ 0 (1) 0 I By Thrive Capital Partners VII Growth, L.P.(2)(3) Class A Common Stock 09/18/2026 J(1) 75,520 D $ 0 (1) 0 I By Claremount VII Associates, L.P.(2)(3) Class A Common Stock 09/18/2026 J(1) 1,323,589 A $ 0 (1) 1,323,589 I By Thrive Capital Partners II, L.P.(2)(3) Class A Common Stock 09/18/2026 J(1) 4,855,810 A $ 0 (1) 4,855,810 I By Thrive Capital Partners III, L.P.(2)(3) Class A Common Stock 09/18/2026 J(1) 164,218 A $ 0 (1) 164,218 I By Claremount TW, L.P.(2)(3) Class A Common Stock 09/18/2026 J(4) 1,323,589 D $ 0 (4) 0 I By Thrive Capital Partners II, L.P.(2)(3) Class A Common Stock 09/18/2026 J(4) 4,855,810 D $ 0 (4) 0 I By Thrive Capital Partners III, L.P.(2)(3) Class A Common Stock 09/18/2026 J(4) 164,218 D $ 0 (4) 0 I By Claremount TW, L.P.(2)(3)

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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 Underlying Securities (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 of Derivative Security: 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
Class B Common Stock	(5)	09/18/2026		J(1)			1,323,589	(5)	(5)	Class A Common Stock	1,323,589	$ 0 (1)	4,779,730	I	By Thrive Capital Partners II, L.P.(2)(3)
Class B Common Stock	(5)	09/18/2026		J(1)			4,855,810	(5)	(5)	Class A Common Stock	4,855,810	$ 0 (1)	17,535,258	I	By Thrive Capital Partners III, L.P.(2)(3)
Class B Common Stock	(5)	09/18/2026		J(1)			164,218	(5)	(5)	Class A Common Stock	164,218	$ 0 (1)	593,021	I	By Claremount TW, L.P.(2)(3)
Class B Common Stock	(5)	09/18/2026		J(1)		6,268,097		(5)	(5)	Class A Common Stock	6,268,097	$ 0 (1)	6,268,097	I	By Thrive Capital Partners VII Growth, L.P.(2)(3)
Class B Common Stock	(5)	09/18/2026		J(1)		75,520		(5)	(5)	Class A Common Stock	75,520	$ 0 (1)	75,520	I	By Claremount VII Associates, L.P.(2)(3)
Class B Common Stock	(5)							(5)	(5)	Class A Common Stock	1,040,704		1,040,704	I	By Thrive Capital Partners V, L.P.(2)(3)
Class B Common Stock	(5)							(5)	(5)	Class A Common Stock	19,239		19,239	I	By Claremount V Associates, L.P.(2)(3)
Class B Common Stock	(5)							(5)	(5)	Class A Common Stock	2,498,513		2,498,513	I	By Thrive Capital Partners VI Growth, L.P.(2)(3)
Class B Common Stock	(5)							(5)	(5)	Class A Common Stock	48,982		48,982	I	By Claremount VI Associates, L.P.(2)(3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Kushner Joshua 75 VARICK STREET, 5TH FLOOR NEW YORK, NY 10013	X	X	Co-Founder and Vice Chairman

Signatures

/s/ Joshua Kushner		09/18/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On September 18, 2026, (i) Thrive Capital Partners II, L.P. ("Thrive II") transferred 1,307,831 and 15,758 shares of Class B Common Stock to Thrive Capital Partners VII Growth, L.P. ("Thrive VII Growth") and Claremount VII Associates, L.P. ("Claremount VII"), respectively, in exchange for 1,307,831 and 15,758 shares of Class A Common Stock held by Thrive VII Growth and Claremount VII, respectively; (ii) Thrive Capital Partners III, L.P. ("Thrive III") transferred 4,798,003 and 57,807 shares of Class B Common Stock to Thrive VII Growth and Claremount VII, respectively, in exchange for 4,798,003 and 57,807 shares of Class A Common Stock held by Thrive VII Growth and Claremount VII, respectively; (iii) Claremount TW, L.P. ("Claremount TW") transferred 162,263 and 1,955 shares of Class B Common Stock to Thrive VII Growth and Claremount VII, respectively, in exchange for 162,263 and 1,955 shares of Class A Common Stock held by Thrive VII Growth and Claremount VII, respectively.
(2)	Thrive Partners II GP, LLC is the general partner of Thrive II; Thrive Partners III GP, LLC is the general partner of each of Thrive III and Claremount TW; Thrive Partners V GP, LLC is the general partner of each of Thrive Capital Partners V, L.P. ("Thrive V") and Claremount V Associates, L.P. ("Claremount V"); Thrive Partners VI GP, LLC is the general partner of each of Thrive Capital Partners VI Growth, L.P. ("Thrive VI Growth") and Claremount VI Associates, L.P. ("Claremount VI"); Thrive Partners VII Growth GP, LLC is the general partner of Thrive VII Growth; and Thrive Partners VII GP, LLC is the general partner of Claremount VII (together with Thrive II, Thrive III, Claremount TW, Thrive V, Claremount V, Thrive VI Growth, Claremount VI, Thrive VII Growth, the "Thrive Capital Funds").
(3)	(continued from footnote 2) Thrive Partners II GP, LLC, Thrive Partners III GP, LLC, Thrive Partners V GP, LLC, Thrive Partners VI GP, LLC, Thrive Partners VII Growth GP, LLC and Thrive Partners VII GP, LLC are collectively referred to as the "Thrive General Partners." Joshua Kushner is the sole managing member of each of the Thrive General Partners and, in his capacity as managing member, has voting and investment power over the shares held by each of the Thrive Capital Funds. Each of the foregoing entities and Mr. Kushner disclaims beneficial ownership of the shares held of record by the Thrive Capital Funds, except to the extent of its or his pecuniary interest therein.
(4)	On September 18, 2026, (i) Thrive II distributed to its limited partners and sole general partner, pro rata and without consideration, 1,323,589 shares of Class A Common Stock; (ii) Thrive III distributed to its limited partners and sole general partner, pro rata and without consideration, 4,855,810 shares of Class A Common Stock; and (iii) Claremount TW distributed to its limited partners and sole general partner, pro rata and without consideration, 164,218 shares of Class A Common Stock. Each of Thrive Partners II GP, LLC and Thrive Partners III GP, LLC, in turn, distributed to their members, pro rata and without consideration, the shares of Class A Common Stock received in the foregoing distributions. Such distributions were made in accordance with the exemptions afforded by Rule 16a-9(a) and Rule 16a-13 of the Securities Exchange Act of 1934, as amended (the "Exchange Act").
(5)	The Class B Common Stock is convertible at any time at the option of the holder into Class A Common Stock on a one-to-one basis, subject to certain exceptions, and will mandatorily convert into Class A Common Stock on the date that is seven years from the date of the prospectus used in connection with the Issuer's initial public offering and upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation.

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