Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2025 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Megan Chung [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On August 20, 2025 , Megan Chung, the Company’s General Counsel and Secretary, executed a Rule 10b5-1 instruction letter that constitutes a “Rule 10b5-1 trading arrangement” intended to satisfy the affirmative defense of Rule 10b5-1(c)(1) of the Exchange Act, providing for the sale of the number of shares necessary to satisfy her tax withholding obligations upon the future settlement of all restricted stock units or vesting of restricted stock. The instruction letter becomes effective on November 19, 2025 and does not include a termination date.
Name	Megan Chung
Title	General Counsel and Secretary
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	August 20, 2025
Darien Spencer [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On August 19, 2025 , Darien Spencer, the Company’s Chief Operating Officer, executed a Rule 10b5-1 instruction letter that constitutes a “Rule 10b5-1 trading arrangement” intended to satisfy the affirmative defense of Rule 10b5-1(c)(1) of the Exchange Act, providing for the sale of the number of shares necessary to satisfy his tax withholding obligations upon the future settlement of all restricted stock unit or vesting of restricted stock. The instruction letter becomes effective on November 18, 2025 and does not include a termination date.
Name	Darien Spencer
Title	Chief Operating Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	August 19, 2025
Kenneth Gianella [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On August 20, 2025 , Kenneth Gianella, the Company’s Chief Financial Officer, executed a Rule 10b5-1 instruction letter that constitutes a “Rule 10b5-1 trading arrangement” intended to satisfy the affirmative defense of Rule 10b5-1(c)(1) of the Exchange Act, providing for the sale of the number of shares necessary to satisfy his tax withholding obligations upon the future settlement of all restricted stock units or vesting of restricted stock. The instruction letter becomes effective on November 19, 2025 and does not include a termination date.
Name	Kenneth Gianella
Title	Chief Financial Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	August 20, 2025
Theodore L Tewksbury PhD [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On August 12, 2025 , Theodore L. Tewksbury Ph.D., the Chair of the Company’s Board of Directors, adopted a “Rule 10b5-1 trading arrangement” as defined in Item 408(a) of Regulation S-K. The plan provides for the periodic sale of up to 6,780 shares of common stock between November 11, 2025 and August 12, 2026.
Name	Theodore L. Tewksbury Ph.D.,
Title	Board of Directors
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	August 12, 2025
Expiration Date	August 12, 2026
Arrangement Duration	274 days
Aggregate Available	6,780
Stephen Skaggs [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On September 8, 2025 , Stephen Skaggs, a member of the Company’s Board of Directors, adopted a “Rule 10b5-1 trading arrangement” as defined in Item 408(a) of Regulation S-K. The plan provides for the periodic sale of up to 20,000 shares of common stock between February 5, 2026 and December 31, 2026.
Name	Stephen Skaggs
Title	Board of Directors
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	September 8, 2025
Expiration Date	December 31, 2026
Arrangement Duration	329 days
Aggregate Available	20,000

Ouster, Inc. 10-Q/A