Form4insider filings, from the source

Company · CIK 0001816581 · SIC 3569 — General Industrial Machinery & Equipment, NEC · Nasdaq

Ouster, Inc. · OUST

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $12.0M · 16net −$12.0M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 11Jun 27Jul 13Jul 29Aug 14Aug 30Sep 15

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 SForm 4 →Sep 16, 7:13 pm EDTMegan ChungGeneral Counsel and Secretary11,484$33.96$389,993189,291−5.72%10b5-1
Sep 14, 2026 SForm 4 →Sep 16, 7:08 pm EDTDarien SpencerChief Operating Officer12,808$33.96$434,953286,999−4.27%10b5-1
Sep 14, 2026 SForm 4 →Sep 16, 7:01 pm EDTCharles Angus PacalaPresident and CEO, Director30,385$33.96$1,031,8471,041,816−2.83%10b5-1
Sep 14, 2026 SForm 4 →Sep 16, 7:00 pm EDTCyrille JacquemetChief Revenue Officer8,896$33.96$302,093105,539−7.77%
Sep 14, 2026 SForm 4 →Sep 16, 6:52 pm EDTKenneth P. GianellaChief Financial Officer15,686$33.96$532,682245,328−6.01%10b5-1
Sep 14, 2026 SForm 4 →Sep 16, 6:51 pm EDTMark FrichtlChief Technology Officer18,778$33.96$637,691318,987−5.56%10b5-1
Sep 9, 2026 GForm 4 →Sep 10, 7:05 pm EDTMegan ChungGeneral Counsel and Secretary2,084——200,775—
Sep 2, 2026 GForm 4 →Sep 4, 6:00 pm EDTMark FrichtlChief Technology Officer38,745——337,765—
Aug 26, 2026 MForm 4 →Aug 28, 6:43 pm EDTMark FrichtlChief Technology Officer100,000$14.22$1,422,000376,510—
Aug 18, 2026 SForm 4 →Aug 19, 8:32 pm EDTKenneth P. GianellaChief Financial Officer40,000$45.33$1,813,278261,014−13.3%10b5-1
Aug 5, 2026 SForm 4 →Aug 7, 6:26 pm EDTStephen A SkaggsDirector5,000$45.54$227,70261,415−7.53%10b5-1
Aug 4, 2026 SForm 4 →Aug 5, 8:53 pm EDTDarien SpencerChief Operating Officer30,000$45.00$1,350,000299,807−9.10%10b5-1
Jul 6, 2026 AForm 4 →Jul 8, 4:05 pm EDTSusan HeysteeDirector660$49.83$32,88840,479—
Jun 22, 2026 SForm 4 →Jun 22, 5:35 pm EDTTed L Tewksbury IIIDirector1,695$47.00$79,665124,999−1.34%10b5-1
Jun 17, 2026 AForm 4 →Jun 22, 5:40 pm EDTStephen A SkaggsDirector4,725——66,415—
Jun 17, 2026 AForm 4 →Jun 22, 5:37 pm EDTPhillip EylerDirector4,725——20,383—
Jun 17, 2026 AForm 4 →Jun 22, 5:35 pm EDTErnest E MaddockDirector4,725——88,902—
Jun 17, 2026 AForm 4 →Jun 22, 5:35 pm EDTTed L Tewksbury IIIDirector4,725——126,694—10b5-1
Jun 17, 2026 AForm 4 →Jun 22, 5:33 pm EDTSusan HeysteeDirector4,725——39,819—
Jun 17, 2026 AForm 4 →Jun 22, 5:30 pm EDTChristina CorreiaDirector4,725——76,415—
Jun 12, 2026 SForm 4 →Jun 16, 4:26 pm EDTKenneth P. GianellaChief Financial Officer54,337$38.82$2,109,525301,014−15.3%10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:21 pm EDTCharles Angus PacalaPresident and CEO, Director29,797$38.82$1,156,8091,072,201−2.70%10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:19 pm EDTCyrille JacquemetChief Revenue Officer8,723$38.82$338,653114,435−7.08%
Jun 12, 2026 SForm 4 →Jun 16, 4:16 pm EDTDarien SpencerChief Operating Officer12,559$38.82$487,578329,807−3.67%10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:16 pm EDTMegan ChungGeneral Counsel and Secretary11,261$38.82$437,186202,859−5.26%10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:14 pm EDTMark FrichtlChief Technology Officer18,414$38.82$714,887276,510−6.24%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 26, 2026 MForm 4 →Aug 28, 6:43 pm EDTMark FrichtlChief Technology Officer100,000——100,713—