OUST · Insider Trading

Ouster, Inc.

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Every open-market purchase and sale reported by OUST officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings

most recent

Open-Market Buys

code P

Sales

code S

Reporting Insiders

current holders

OUST — Recent Form 4 Transactions (latest 2026-10-07)

Filed	Insider	Role	Type	Shares	Value
2026-10-07	Susan Heystee	Director	A	+779	+$34.37K
2026-09-16	Mark Frichtl	Chief Technology Officer	Sell	−18,778	−$637.69K
2026-09-16	Darien Spencer	Chief Operating Officer	Sell	−12,808	−$434.95K
2026-09-16	Kenneth P. Gianella	Chief Financial Officer	Sell	−15,686	−$532.68K
2026-09-16	Cyrille Jacquemet	Chief Revenue Officer	Sell	−8,896	−$302.09K
2026-09-16	Megan Chung	General Counsel and Secretary	Sell	−11,484	−$389.99K
2026-09-16	Charles Angus Pacala	President and CEO	Sell	−30,385	−$1.03M
2026-09-10	Megan Chung	General Counsel and Secretary	G	−2,084	—
2026-09-04	Mark Frichtl	Chief Technology Officer	G	−38,745	—
2026-08-28	Mark Frichtl	Chief Technology Officer	M	+100,000	+$1.42M
2026-08-19	Kenneth P. Gianella	Chief Financial Officer	Sell	−40,000	−$1.81M
2026-08-07	Stephen A Skaggs	Director	Sell	−5,000	−$227.70K
2026-08-07	Stephen A Skaggs	Director	Sell	−5,000	−$227.70K
2026-08-05	Darien Spencer	Chief Operating Officer	Sell	−30,000	−$1.35M
2026-07-08	Susan Heystee	Director	A	+660	+$32.89K

OUST — Current Insider Holders

Insider	Role	Shares Held	Value
Charles Angus Pacala	President and CEO	1,041,816	$29.62M
Mark Frichtl	Chief Technology Officer	318,987	$9.07M
Darien Spencer	Chief Operating Officer	286,998	$8.16M
Kenneth P. Gianella	Chief Financial Officer	245,328	$6.97M
Megan Chung	General Counsel and Secretary	189,291	$5.38M
Cyrille Jacquemet	Chief Revenue Officer	105,538	$3.00M
Stephen A Skaggs	Director	65,029	$1.85M
Susan Heystee	Director	41,257	$1.17M

OUST Insider Trading FAQ

Who are the insiders at OUST?

8 officers, directors and 10%+ beneficial owners currently report holdings in OUST via SEC Form 4.

Are OUST insiders buying or selling?

Across the 15 most recent Form 4 filings for OUST, 0 were open-market purchases (code P) and 10 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.

How current is OUST insider data?

Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent OUST filing is dated 2026-10-07.

How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the OUST quote page; the site-wide leaderboard is on the insider transactions hub.