Mark Frichtl - 26 Aug 2026 Form 4 Insider Report for Ouster, Inc. (OUST)

Reporting relationship: Chief Technology Officer
Issuer ticker: OUST
Reported as of: 26 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 28 Aug 2026, 18:43:31 UTC
Prior SEC filing: 16 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Megan Chung, as Attorney-in-Fact for Mark Frichtl

Key filing fact

Mark Frichtl filed Form 4 for Ouster, Inc. (OUST) on 28 Aug 2026.

Key facts

This page summarizes Mark Frichtl's Form 4 filing for Ouster, Inc. (OUST).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 28 Aug 2026, 18:43.

Change

Previous filing in this sequence was filed on 16 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001847596 Primary reporting owner

Frichtl Mark

Relationship: Chief Technology Officer
Address: 350 TREAT AVENUE, SAN FRANCISCO
Signature: /s/ Megan Chung, as Attorney-in-Fact for Mark Frichtl
Signature date: 28 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OUST transaction

Common Stock

Options Exercise

Transaction value
Shares: +100,000
Change %: +36%
Price: $14.22^*
Shares after: 376,510
Date: 26 Aug 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OUST transaction Derivative

Incentive Stock Option

Options Exercise

Transaction value
Shares: -100,000
Change %: -50%
Price: $0.000000^*
Shares after: 100,713
Date: 26 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 100,000
Exercise price: $14.22
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The shares received upon exercise remain subject to a lock-up period that expires at the close of business on August 31, 2026, pursuant to the lock-up agreement entered into for the Registrant's offering of common stock that closed on July 6, 2026.

Footnote F2

The options are fully vested and exercisable.

Footnote F3

On the Reporting Person's Form 4 dated March 15, 2021 in which this option grant was reported, incentive stock options and non-qualified stock options were reported in the aggregate. All non-qualified stock options have since been exercised, with 100,713 incentive stock options remaining.