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Ouster, Inc. planned insider sales

In the last twelve months insiders at Ouster, Inc. filed 44 Form 144 notices of planned sales, 1.3 million shares worth $40.2 million at the time of filing, from 20 sellers. The latest, filed 11 September 2026: Jacquemet Cyrille (officer), 9,642 shares worth $361,479, planned for around 11 September 2026 through ETRADE FINANCIAL CORPORATION.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
11 September 2026Jacquemet CyrilleOfficer9,642$361,47911 September 20268,896 shares from 14 September 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 September 2026Chung MeganOfficer12,447$466,63811 September 202611,484 shares from 14 September 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 September 2026Spencer DarienOfficer13,882$520,43611 September 202612,808 shares from 14 September 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 September 2026Gianella Kenneth P.Officer17,002$637,40511 September 202615,686 shares from 14 September 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 September 2026Frichtl MarkOfficer20,353$763,03411 September 202618,778 shares from 14 September 2026ETRADE FINANCIAL CORPORATIONRestricted stock unit awards awarded under incentive award planForm 144
11 September 2026Pacala Charles AngusOfficer, Director32,934$1.2 million11 September 202630,385 shares from 14 September 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
18 August 2026Kenneth GianellaOfficer40,000$1.8 million18 August 202640,000 shares from 18 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
6 August 2026Stephen SkaggsDirector3,614$163,2816 August 20265,000 shares from 5 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
5 August 2026Stephen SkaggsDirector1,386$64,4215 August 2026None on Form 4 yetMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 August 2026Darien R SpencerOfficer30,000$1.4 million4 August 202630,000 shares from 4 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
22 June 2026Theodore Tewksbury IiiDirector1,695$79,66522 June 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
26 May 2026Cyrille JacquemetOfficer9,433$377,32026 May 202618,156 shares from 26 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
26 May 2026Darien R SpencerOfficer30,001$1.4 million26 May 202642,560 shares from 26 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
26 May 2026Mark FrichtlOfficer268,742$10.0 million26 May 2026327,156 shares from 26 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesFounders SharesForm 144
22 May 2026Mark FrichtlOfficer115,684$4.1 million22 May 202675,684 shares from 22 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock Options; Founders SharesForm 144
21 May 2026Susan HeysteeDirector9,316$324,24321 May 20269,316 shares from 21 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted stock vesting under a registered planForm 144
20 May 2026Cyrille JacquemetOfficer10,000$350,00014 May 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
15 May 2026Mark FrichtlOfficer4,316$150,45615 May 202644,316 shares from 14 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
14 May 2026Mark FrichtlOfficer40,000$1.4 million14 May 2026136,434 shares from 13 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
13 May 2026Mark FrichtlOfficer136,434$3.7 million13 May 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock Options; Restricted Stock UnitsForm 144
5 May 2026Stephen SkaggsDirector5,000$150,0005 May 20265,000 shares from 5 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 May 2026Mark FrichtlOfficer34,600$915,1704 May 202634,600 shares from 4 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
22 April 2026Mark FrichtlOfficer400$11,04422 April 202660,400 shares from 21 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
21 April 2026Stephen SkaggsDirector5,000$140,00021 April 20265,000 shares from 21 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 April 2026Mark FrichtlOfficer60,000$1.6 million21 April 202660,000 shares from 20 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
20 April 2026Mark FrichtlOfficer60,000$1.5 million20 April 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
17 April 2026Mark FrichtlOfficer30,000$725,10017 April 202630,000 shares from 17 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
16 April 2026Megan ChungOfficer5,837$144,17416 April 202617,098 shares from 16 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
15 April 2026Mark FrichtlOfficer20,000$468,40015 April 202660,000 shares from 14 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
14 April 2026Mark FrichtlOfficer40,000$875,20014 April 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
25 March 2026Mark FrichtlOfficer40,000$822,80025 March 202640,000 shares from 25 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
19 March 2026Theodore Tewksbury PH DDirector1,695$33,90019 March 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
11 March 2026Megan ChungOfficer10,958$225,18712 March 20269,593 shares from 12 March 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 March 2026Darien SpencerOfficer12,495$256,77212 March 202610,938 shares from 12 March 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 March 2026Mark FrichtlOfficer17,922$368,29712 March 202615,689 shares from 12 March 2026ETRADE FINANCIAL CORPORATIONRestricted stock unit awards awarded under incentive award planForm 144
11 March 2026Charles Angus PacalaOfficer, Director28,162$578,72912 March 202624,657 shares from 12 March 2026ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
16 January 2026Megan ChungOfficer5,837$159,00016 January 20265,837 shares from 16 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
19 December 2025Theodore Tewksbury PH DDirector1,695$36,39219 December 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
12 December 2025Susan HeysteeDirector11,650$291,59012 December 202511,650 shares from 12 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
11 December 2025Megan ChungOfficer11,821$301,55412 December 202510,696 shares from 12 December 2025ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 December 2025Darien SpencerOfficer12,068$307,85512 December 202510,919 shares from 12 December 2025ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
11 December 2025Mark FrichtlOfficer17,311$441,60412 December 202515,661 shares from 12 December 2025ETRADE FINANCIAL CORPORATIONRestricted stock unit awards awarded under incentive award planForm 144
11 December 2025Charles Angus PacalaOfficer, Director27,202$693,92312 December 202524,610 shares from 12 December 2025ETRADE FINANCIAL CORPORATIONRestricted stock units awarded under incentive award planForm 144
12 November 2025Theodore TewksburyDirector1,695$43,01911 November 2025No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?