Company · Ownership research

Ouster, Inc. OUST

CIK 0001816581

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 33 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-10.

Insider purchases & sales

Purchased: $1.52M
Sold: $49.98M

Sep 1, 2023 – Sep 10, 2026
Available records · partial months are marked ·

202410 of 30 preview events · 33 available in 2024

Date	Insider	Activity	Trade value (USD)	% of prior holding
2024-12-16	SPENCER DARIEN Chief Operating Officer	Sale	$2.25K 248 shares sold	0.09% sold Direct holding	▾
2024-12-12	Chung Megan General Counsel and Secretary	Sale	$132.48K 13,671 shares sold	8.37% sold Direct holding	▾
2024-12-12	WEINSWIG MARK Chief Financial Officer	Sale	$191.02K 19,712 shares sold	10.18% sold Direct holding	▾
2024-12-12	Frichtl Mark Chief Technology Officer	Purchase	$49.33K 5,045 shares bought	0.99% added Direct holding	▾
2024-12-12	Pacala Charles Angus President and CEO · Director	Purchase	$498.97K 50,954 shares bought	7.09% added Direct holding	▾
2024-12-12	SPENCER DARIEN Chief Operating Officer	Sale	$144.09K 14,869 shares sold	4.85% sold Direct holding	▾
2024-11-29	WEINSWIG MARK Chief Financial Officer	Sale	$5.02K 518 shares sold	0.27% sold Direct holding	▾
2024-11-21	WEINSWIG MARK Chief Financial Officer	Sale10b5-1 footnote	$39.75K 4,460 shares sold	2.25% sold Direct holding	▾
2024-11-20	WEINSWIG MARK Chief Financial Officer	Sale10b5-1 footnote	$273.91K 31,397 shares sold	13.65% sold Direct holding	▾
2024-09-17	SPENCER DARIEN Chief Operating Officer	Sale	$1.67K 263 shares sold	0.09% sold Direct holding	▾

Showing 30 / 33 record groups in 2024. The complete set is available through the API.

Ouster, Inc. · OUST

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 33 purchase / sale groups and 21 of 21 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"OUST","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.