OSCR insider files proposed sale of vested RSUs

Mario Schlosser filed a Form 144 reporting proposed sales of Common Stock and recent dispositions.

Rhea-AI Filing Summary

Mario Schlosser filed a Form 144 reporting proposed sales of Common Stock and recent dispositions. The filing lists a planned disposition of 43,179 Restricted Stock Units vesting under a registered plan on 03/01/2026. It also records multiple open-market sales by Mr. Schlosser totaling several transactions in December 2025 and January 2026 with individual sale sizes and proceeds shown.

Insights

Insider Transaction Analyst

Routine affiliate selling notice listing vested RSUs and prior open-market sales.

The filing lists 43,179 Restricted Stock Units vesting under a registered plan on 03/01/2026, described as to be sold by the issuer under the registered plan. It also records prior sales by Mario Schlosser on 12/02/2025, 12/24/2025, 01/02/2026, 01/05/2026, 01/06/2026, and 01/08/2026 with per-transaction share counts and proceeds shown.

These entries reflect reported dispositions rather than new corporate actions; cash-flow treatment and timing beyond the vesting date are not specified in the excerpt. Subsequent filings or broker reports would show execution details if completed.

FAQ

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

What does the OSCR Form 144 filed by Mario Schlosser report?

The filing reports a proposed sale of 43,179 Restricted Stock Units vesting on 03/01/2026 and lists prior open-market sales on specified December 2025 and January 2026 dates with shares and proceeds for each transaction.

How many RSUs are listed to vest and when in the OSCR filing?

The filing lists 43,179 Restricted Stock Units vesting under a registered plan on 03/01/2026. The entry describes the securities as issued for Services Rendered and indicated for sale under the registered plan.

Which prior sales by Mario Schlosser are shown in the OSCR Form 144?

The excerpt records sales on 12/02/2025 (23,965 shares), 12/24/2025 (38,835), 01/02/2026 (137,933), 01/05/2026 (96,928), 01/06/2026 (76,962), and 01/08/2026 (23,038), each with corresponding proceeds shown in the filing.

Does the Form 144 state who will receive proceeds from the RSU sales?

The filing characterizes the RSUs as vesting under a registered plan and indicates the issuer in the sale designation; the excerpt does not state detailed proceeds recipients beyond that description in the registered-plan line.

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

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Accepted by SEC EDGAR 03/02/2026 - 04:05 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001844320
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Oscar Health, Inc.
SEC File Number	001-40154
Address of Issuer	75 VARICK STREET 5th Floor New York NEW YORK 10013
Phone	646-403-3677
Name of Person for Whose Account the Securities are To Be Sold	Schlosser Mario
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer / Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004	20629	281792.14	262157000	03/02/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	03/01/2026	Restricted stock units vesting under a registered plan	Issuer			43179	03/01/2026	Services Rendered

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Mario Schlosser 75 Varick Street, 5th Floor New York NY 10013	Common Stock	12/02/2025	23965	397579.35
Mario Schlosser 75 Varick Street, 5th Floor New York NY 10013	Common Stock	12/24/2025	38835	582525.00
Mario Schlosser 75 Varick Street, 5th Floor New York NY 10013	Common Stock	01/02/2026	137933	2071753.66
Mario Schlosser 75 Varick Street, 5th Floor New York NY 10013	Common Stock	01/05/2026	96928	1515953.92
Mario Schlosser 75 Varick Street, 5th Floor New York NY 10013	Common Stock	01/06/2026	76962	1309123.62
Mario Schlosser 75 Varick Street, 5th Floor New York NY 10013	Common Stock	01/08/2026	23038	406620.70

144: Remarks and Signature

Remarks
Date of Notice	03/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/08/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Melissa Curtin, Attorney-in-Fact for Mario Schlosser
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)