SEC Form 4 reporting owner

Frichtl Mark

Frichtl Mark has filed 35 Form 4 transactions reported between December 12, 2025 and September 14, 2026, as Chief Technology Officer of Ouster, Inc..

Name as filed: Frichtl Mark

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$20.1M

18 lines

Companies

with Form 4 filings

Latest transaction

Sep 14, 2026

transaction date

Roles and reported holdings

OUSTOuster, Inc.
Dec 12, 2025 – Sep 14, 2026
Chief Technology Officer
Held directly318,987 sh as of Sep 14, 2026 · Form 4
24 months: $20.1M sold

Transaction history

All 35 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 14, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	18,778	$33.96	$638K@ $33.96	318,987	Form 4
Sep 2, 2026	OUSTChief Technology Officer	GiftCode G · direct	38,745	—	—	337,765	Form 4
Aug 26, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	100,000	$14.22	$1.4M@ $14.22	376,510	Form 4
Jun 12, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	18,414	$38.82	$715K@ $38.82	276,510	Form 4
May 26, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	3,742	$45.00	$168K@ $45.00	294,924	Form 4
May 26, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	45,000	$43.00	$1.9M@ $43.00	343,666	Form 4
May 26, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	48,191	$41.99	$2.0M@ $41.99	388,666	Form 4
May 26, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	70,558	$40.90	$2.9M@ $40.90	436,857	Form 4
May 26, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	76,582	$39.94	$3.1M@ $39.94	507,415	Form 4
May 26, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	19,669	$39.16	$770K@ $39.16	583,997	Form 4
May 22, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	40,000	$37.16	$1.5M@ $37.16	603,666	Form 4
May 22, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	35,684	$36.39	$1.3M@ $36.39	643,666	Form 4
May 22, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	50,063	$14.22	$712K@ $14.22	679,350	Form 4
May 15, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	4,316	$14.22	$61K@ $14.22	632,954	Form 4
May 14, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	40,000	$14.22	$569K@ $14.22	668,638	Form 4
May 13, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	13,659	$34.00	$464K@ $34.00	628,638	Form 4
May 13, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	32,500	$33.00	$1.1M@ $33.00	642,297	Form 4
May 13, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	2,500	$33.00	$83K@ $33.00	674,797	Form 4
May 13, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	35,000	$32.00	$1.1M@ $32.00	677,297	Form 4
May 13, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	21,341	$14.22	$303K@ $14.22	733,638	Form 4
May 13, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	31,434	$2.13	$67K@ $2.13	743,731	Form 4
May 5, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	13,451	$2.13	$29K@ $2.13	725,748	Form 4
May 4, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	21,149	$2.13	$45K@ $2.13	733,446	Form 4
Apr 22, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	400	$2.13	$852@ $2.13	712,697	Form 4
Apr 21, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	30,000	$28.11	$843K@ $28.11	742,297	Form 4
Apr 21, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	60,000	$2.13	$128K@ $2.13	772,297	Form 4
Apr 20, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	30,000	$26.08	$783K@ $26.08	742,297	Form 4
Apr 20, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	60,000	$2.13	$128K@ $2.13	772,297	Form 4
Apr 17, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	30,000	$2.13	$64K@ $2.13	742,297	Form 4
Apr 15, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	20,000	$2.13	$43K@ $2.13	732,297	Form 4
Apr 14, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	40,000	$2.13	$85K@ $2.13	752,297	Form 4
Apr 11, 2026	OUSTChief Technology Officer	Grant or awardCode A · direct	75,415	—	—	712,297	Form 4
Mar 25, 2026	OUSTChief Technology Officer	Option exerciseCode M · direct	40,000	$2.13	$85K@ $2.13	676,882	Form 4
Mar 12, 2026	OUSTChief Technology Officer	Open-market saleCode S · direct	15,689	$23.43	$368K@ $23.43	636,882	Form 4
Dec 12, 2025	OUSTChief Technology Officer	Open-market saleCode S · direct	15,661	$24.98	$391K@ $24.98	652,571	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.