Ouster, Inc. — Director's Dealing 2025

Dec 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ouster, Inc. (OUST)
CIK: 0001816581
Period of Report: 2025-12-08

Reporting Person: Eyler Phillip (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-08	Common Stock	A	11683	—	Acquired	11683	Direct
2025-12-08	Common Stock	A	3975	—	Acquired	15658	Direct

Footnotes

F1: Represents Ouster, Inc. (the "Company") restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Company's common stock. The RSUs vest as to 1/12 of the total number of RSUs on each of the first twelve quarterly anniversaries of the grant date, subject to the Reporting Person's continued service through the applicable vesting date. The RSUs have no expiration date. The Reporting Person will settle all awards of common stock received, including vested RSUs, upon the earlier of a change in control or separation from service with the Company.

F2: Represents Company RSUs. Each RSU represents a contingent right to receive one share of the Company's common stock. The RSUs vest in quarterly installments through the earlier of June 18, 2026 or the Company's next annual meeting of stockholders, subject to the Reporting Person's continued service through the applicable vesting date. The RSUs have no expiration date. The Reporting Person will settle all awards of common stock received, including vested RSUs, upon the earlier of a change in control or separation from service with the Company.