SD

/s/ Megan Chung

Date: May 29, 2026

Name: Megan Chung

Title: General Counsel

SD 1 d152539dsd.htm SD SD

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM SD

Specialized Disclosure Report

Ouster, Inc.

(Exact name of registrant as specified in its charter)

Delaware

001-39463

86-2528989

(State or other jurisdiction of

incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

350 Treat Avenue

San Francisco, California

94110

(Address of principal executive offices)

(Zip Code)


Megan Chung		(415) 949-0108

(Name and telephone number, including area code, of the person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

☒	Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025.

☐	Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the reporting period from January 1 to December 31, 2025.

Section 1 – Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

In accordance with the disclosure requirements promulgated by the U.S. Securities and Exchange Commission, Ouster, Inc. (the “Company”) has undertaken efforts to determine our conflict minerals¹ reporting requirements for the period from January 1 to December 31, 2025.

The Company has filed this Specialized Disclosure Report and the associated Conflict Minerals Report, which appears as Exhibit 1.01 hereto and is publicly available on the Company’s website at https://investors.ouster.com/financials/sec-filings/default.aspx.

Item 1.02 Exhibit

The Company’s Conflict Minerals Report is provided as Exhibit 1.01 hereto.

Section 2 – Resource Extraction Issuer Disclosure

Item 2.01 Resource Extraction Issuer Disclosure and Report.

Not applicable.

Section 3 – Exhibits Item 3.01 Exhibits

The following exhibit is filed as part of this report.

Exhibit 1.01 – Ouster, Inc.’s Conflict Minerals Report for the period January 1 to December 31, 2025.

*****

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

Ouster, Inc.

The term “conflict mineral” is defined in Section 1502(e)(4) of the Dodd-Frank Wall Street Reform and Consumer Protection Act as (A) columbite-tantalite, also known as coltan (the metal ore from which tantalum is extracted); cassiterite (the metal ore from which tin is extracted); gold; wolframite (the metal ore from which tungsten is extracted); or their derivatives; or (B) any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo (“DRC”) or an adjoining country.

SEC Form SD filed by Ouster Inc.