Stock Scorer

Ouster, Inc. (OUST) · Insider trading

What Ouster's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$178,006
1 insider, 3 trades
Sold, 12 months
$47.36M
9 insiders, 97% under a plan
Net, 12 months
−$47.19M
bought less sold
Latest filing
2026-10-07
filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2024-11: $318,787 sold 2024-12: $548,278 bought 2024-12: $469,814 sold 2025-01 2025-03: $148,252 sold 2025-06: $113,573 sold 2025-07 2025-08: $1.21M sold 2025-09: $2.81M sold 2025-10: $181,058 sold 2025-11: $43,019 sold 2025-12: $1.87M sold 2026-01: $159,000 sold 2026-01 2026-03: $136,175 bought 2026-03: $2.30M sold 2026-04: $5.75M sold 2026-05: $41,831 bought 2026-05: $25.20M sold 2026-06: $5.32M sold 2026-07 2026-08: $3.39M sold 2026-09: $3.33M sold
Bought Sold Largest month: $25.20M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Frichtl MarkChief Technology Officer $49,340 $31.78M 35 2026-09-14 318,987
Pacala Charles AngusDirector, President and CEO $498,938 $4.46M 7 2026-09-14 1,041,816
Spencer DarienChief Operating Officer – $4.91M 12 2026-09-14 286,998
Gianella Kenneth P.Chief Financial Officer – $4.46M 6 2026-09-14 245,328
Chung MeganGeneral Counsel and Secretary – $2.57M 12 2026-09-14 189,291
Heystee SusanDirector – $1.83M 3 2026-05-21 35,094
Jacquemet CyrilleChief Revenue Officer – $1.37M 4 2026-09-14 105,538
Skaggs Stephen ADirector – $517,702 4 2026-08-06 61,415
Weinswig MarkChief Financial Officer – $509,797 5 2024-12-12 173,960
Tewksbury Ted L IIIDirector – $192,976 4 2026-06-22 124,999
Boulet VirginiaDirector $178,006 – 3 2026-05-11 228,950
Geng ChenInterim CFO – $23,272 1 2025-03-12 38,090

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2026-09-14 Frichtl MarkChief Technology Officer Saleplan 18,778 33.96 $637,701 318,987 Form 4
2026-09-14 Gianella Kenneth P.Chief Financial Officer Saleplan 15,686 33.96 $532,697 245,328 Form 4
2026-09-14 Jacquemet CyrilleChief Revenue Officer Sale 8,896 33.96 $302,108 105,538 Form 4
2026-09-14 Pacala Charles AngusDirector, President and CEO Saleplan 30,385 33.96 $1.03M 1,041,816 Form 4
2026-09-14 Spencer DarienChief Operating Officer Saleplan 12,808 33.96 $434,960 286,998 Form 4
2026-09-14 Chung MeganGeneral Counsel and Secretary Saleplan 11,484 33.96 $389,997 189,291 Form 4
2026-08-18 Gianella Kenneth P.Chief Financial Officer Saleplan 17,927 44.65 $800,441 283,087 Form 4
2026-08-18 Gianella Kenneth P.Chief Financial Officer Saleplan 13,364 45.52 $608,329 269,723 Form 4
2026-08-18 Gianella Kenneth P.Chief Financial Officer Saleplan 8,201 46.40 $380,526 261,522 Form 4
2026-08-18 Gianella Kenneth P.Chief Financial Officer Saleplan 508 47.09 $23,922 261,014 Form 4
2026-08-06 Skaggs Stephen ADirector Saleplan 3,614 45.18 $163,281 61,415 Form 4
2026-08-05 Skaggs Stephen ADirector Saleplan 1,386 46.48 $64,421 65,029 Form 4
2026-08-04 Spencer DarienChief Operating Officer Saleplan 30,000 45.00 $1.35M 299,806 Form 4
2026-06-22 Tewksbury Ted L IIIDirector Saleplan 1,695 47.00 $79,665 124,999 Form 4
2026-06-12 Frichtl MarkChief Technology Officer Saleplan 18,414 38.82 $714,831 276,510 Form 4
2026-06-12 Chung MeganGeneral Counsel and Secretary Saleplan 11,261 38.82 $437,152 202,859 Form 4
2026-06-12 Spencer DarienChief Operating Officer Saleplan 12,559 38.82 $487,540 329,806 Form 4
2026-06-12 Jacquemet CyrilleChief Revenue Officer Sale 8,723 38.82 $338,627 114,434 Form 4
2026-06-12 Pacala Charles AngusDirector, President and CEO Saleplan 29,797 38.82 $1.16M 1,072,201 Form 4
2026-06-12 Gianella Kenneth P.Chief Financial Officer Saleplan 54,337 38.82 $2.11M 301,014 Form 4
2026-05-26 Spencer DarienChief Operating Officer Saleplan 30,000 45.00 $1.35M 342,366 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 19,669 39.16 $770,238 583,997 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 76,582 39.94 $3.06M 507,415 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 70,558 40.90 $2.89M 436,857 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 48,191 41.99 $2.02M 388,666 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 45,000 43.00 $1.94M 343,666 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 45,000 44.00 $1.98M 298,666 Form 4
2026-05-26 Frichtl MarkChief Technology Officer Saleplan 3,742 45.00 $168,390 294,924 Form 4
2026-05-26 Jacquemet CyrilleChief Revenue Officer Saleplan 9,433 40.00 $377,320 123,158 Form 4
2026-05-22 Frichtl MarkChief Technology Officer Saleplan 35,684 36.39 $1.30M 643,666 Form 4
2026-05-22 Frichtl MarkChief Technology Officer Saleplan 40,000 37.16 $1.49M 603,666 Form 4
2026-05-21 Heystee SusanDirector Sale 9,316 34.81 $324,290 35,094 Form 4
2026-05-15 Frichtl MarkChief Technology Officer Saleplan 4,316 36.00 $155,376 628,638 Form 4
2026-05-14 Jacquemet CyrilleChief Revenue Officer Saleplan 10,000 35.00 $350,000 132,590 Form 4
2026-05-14 Frichtl MarkChief Technology Officer Saleplan 40,000 35.00 $1.40M 628,638 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Saleplan 31,434 31.09 $977,283 712,297 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Saleplan 21,341 34.00 $725,594 712,297 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Saleplan 35,000 32.00 $1.12M 677,297 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Saleplan 2,500 33.00 $82,500 674,797 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Saleplan 32,500 33.00 $1.07M 642,297 Form 4
56 more
2026-05-13 Frichtl MarkChief Technology Officer Saleplan 13,659 34.00 $464,406 628,638 Form 4
2026-05-11 Boulet VirginiaDirector Buy 608 25.35 $15,413 228,950 Form 4
2026-05-11 Boulet VirginiaDirector Buy 1,050 25.16 $26,418 230,000 Form 4
2026-05-05 Skaggs Stephen ADirector Saleplan 5,000 30.00 $150,000 61,690 Form 4
2026-05-05 Frichtl MarkChief Technology Officer Saleplan 13,451 30.00 $403,530 712,297 Form 4
2026-05-04 Frichtl MarkChief Technology Officer Saleplan 21,149 30.13 $637,219 712,297 Form 4
2026-04-22 Frichtl MarkChief Technology Officer Saleplan 400 30.00 $12,000 712,297 Form 4
2026-04-21 Skaggs Stephen ADirector Saleplan 5,000 28.00 $140,000 66,690 Form 4
2026-04-21 Frichtl MarkChief Technology Officer Saleplan 30,000 28.11 $843,300 742,297 Form 4
2026-04-21 Frichtl MarkChief Technology Officer Saleplan 30,000 29.02 $870,600 712,297 Form 4
2026-04-20 Frichtl MarkChief Technology Officer Saleplan 30,000 26.08 $782,400 742,297 Form 4
2026-04-20 Frichtl MarkChief Technology Officer Saleplan 30,000 27.08 $812,400 712,297 Form 4
2026-04-17 Frichtl MarkChief Technology Officer Saleplan 30,000 25.15 $754,500 712,297 Form 4
2026-04-16 Chung MeganGeneral Counsel and Secretary Saleplan 5,837 24.70 $144,174 213,836 Form 4
2026-04-15 Frichtl MarkChief Technology Officer Saleplan 20,000 24.00 $480,000 712,297 Form 4
2026-04-14 Frichtl MarkChief Technology Officer Saleplan 40,000 22.76 $910,400 712,297 Form 4
2026-03-25 Frichtl MarkChief Technology Officer Saleplan 40,000 20.94 $837,600 636,882 Form 4
2026-03-19 Tewksbury Ted L IIIDirector Saleplan 1,695 20.00 $33,900 121,969 Form 4
2026-03-12 Pacala Charles AngusDirector, President and CEO Saleplan 24,657 23.43 $577,714 960,660 Form 4
2026-03-12 Chung MeganGeneral Counsel and Secretary Saleplan 9,593 23.43 $224,764 173,548 Form 4
2026-03-12 Frichtl MarkChief Technology Officer Saleplan 15,689 23.43 $367,593 636,882 Form 4
2026-03-12 Spencer DarienChief Operating Officer Saleplan 10,938 23.43 $256,277 325,250 Form 4
2026-03-06 Boulet VirginiaDirector Buy 6,500 20.95 $136,175 228,342 Form 4
2026-01-16 Chung MeganGeneral Counsel and Secretary Saleplan 5,837 27.24 $159,000 183,141 Form 4
2025-12-19 Tewksbury Ted L IIIDirector Saleplan 1,695 21.47 $36,392 123,664 Form 4
2025-12-12 Chung MeganGeneral Counsel and Secretary Saleplan 10,696 24.98 $267,186 188,978 Form 4
2025-12-12 Pacala Charles AngusDirector, President and CEO Saleplan 24,610 24.98 $614,758 985,317 Form 4
2025-12-12 Spencer DarienChief Operating Officer Saleplan 10,919 24.98 $272,757 336,188 Form 4
2025-12-12 Frichtl MarkChief Technology Officer Saleplan 15,661 24.98 $391,212 652,571 Form 4
2025-12-12 Heystee SusanDirector Sale 11,650 25.03 $291,600 41,625 Form 4
2025-11-11 Tewksbury Ted L IIIDirector Saleplan 1,695 25.38 $43,019 125,359 Form 4
2025-10-17 Chung MeganGeneral Counsel and Secretary Saleplan 5,837 31.02 $181,058 197,199 Form 4
2025-09-12 Chung MeganGeneral Counsel and Secretary Sale 17,183 28.46 $489,028 203,036 Form 4
2025-09-12 Pacala Charles AngusDirector, President and CEO Saleplan 37,992 28.46 $1.08M 1,009,927 Form 4
2025-09-12 Frichtl MarkChief Technology Officer Saleplan 25,329 28.46 $720,863 665,403 Form 4
2025-09-12 Spencer DarienChief Operating Officer Sale 18,274 28.46 $520,078 346,132 Form 4
2025-08-13 Heystee SusanDirector Sale 40,390 30.00 $1.21M 52,265 Form 4
2025-06-12 Spencer DarienChief Operating Officer Sale 3,226 18.76 $60,520 364,406 Form 4
2025-06-12 Chung MeganGeneral Counsel and Secretary Sale 2,828 18.76 $53,053 220,219 Form 4
2025-03-26 Chung MeganGeneral Counsel and Secretary Saleplan 5,800 11.24 $65,194 220,762 Form 4
2025-03-17 Spencer DarienChief Operating Officer Sale 249 8.02 $1,997 286,732 Form 4
2025-03-12 Spencer DarienChief Operating Officer Sale 4,489 7.63 $34,251 286,981 Form 4
2025-03-12 Chung MeganGeneral Counsel and Secretary Sale 3,085 7.63 $23,539 146,562 Form 4
2025-03-12 Geng ChenInterim CFO Sale 3,050 7.63 $23,272 38,090 Form 4
2024-12-16 Spencer DarienChief Operating Officer Sale 248 9.08 $2,252 291,470 Form 4
2024-12-12 Spencer DarienChief Operating Officer Sale 14,869 9.69 $144,081 291,718 Form 4
2024-12-12 Pacala Charles AngusDirector, President and CEO Buy 45,454 9.82 $446,358 764,457 Form 4
2024-12-12 Pacala Charles AngusDirector, President and CEO Buy 5,500 9.56 $52,580 769,957 Form 4
2024-12-12 Frichtl MarkChief Technology Officer Buy 4,545 9.78 $44,450 512,621 Form 4
2024-12-12 Frichtl MarkChief Technology Officer Buy 500 9.78 $4,890 513,121 Form 4
2024-12-12 Weinswig MarkChief Financial Officer Sale 19,712 9.69 $191,009 173,960 Form 4
2024-12-12 Chung MeganGeneral Counsel and Secretary Sale 13,671 9.69 $132,472 149,647 Form 4
2024-11-29 Weinswig MarkChief Financial Officer Sale 518 9.70 $5,025 193,672 Form 4
2024-11-21 Weinswig MarkChief Financial Officer Saleplan 4,460 8.91 $39,739 194,190 Form 4
2024-11-20 Weinswig MarkChief Financial Officer Saleplan 24,220 8.73 $211,441 205,827 Form 4
2024-11-20 Weinswig MarkChief Financial Officer Saleplan 7,177 8.72 $62,583 198,650 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

38 × grant or award15 × option exercise2 × gift1 × returned to the company
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-10-05 Heystee SusanDirector Grant or award A +779 44.12 41,258 Form 4
2026-09-09 Chung MeganGeneral Counsel and Secretary Gift G −2,084 – 200,775 Form 4
2026-09-02 Frichtl MarkChief Technology Officer Gift G −38,745 – 337,765 Form 4
2026-08-26 Frichtl MarkChief Technology Officer Option exercise M +100,000 14.22 376,510 Form 4
2026-07-06 Heystee SusanDirector Grant or award A +660 49.83 40,479 Form 4
2026-06-17 Correia ChristinaDirector Grant or award A +4,725 – 76,415 Form 4
2026-06-17 Heystee SusanDirector Grant or award A +4,725 – 39,819 Form 4
2026-06-17 Tewksbury Ted L IIIDirector Grant or award A +4,725 – 126,694 Form 4
2026-06-17 Maddock Ernest eDirector Grant or award A +4,725 – 88,902 Form 4
2026-06-17 Eyler PhillipDirector Grant or award A +4,725 – 20,383 Form 4
2026-06-17 Skaggs Stephen ADirector Grant or award A +4,725 – 66,415 Form 4
2026-05-22 Frichtl MarkChief Technology Officer Option exercise M +50,063 14.22 679,350 Form 4
2026-05-15 Frichtl MarkChief Technology Officer Option exercise M +4,316 14.22 632,954 Form 4
2026-05-14 Frichtl MarkChief Technology Officer Option exercise M +40,000 14.22 668,638 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Option exercise M +31,434 2.13 743,731 Form 4
2026-05-13 Frichtl MarkChief Technology Officer Option exercise M +21,341 14.22 733,638 Form 4
2026-05-05 Frichtl MarkChief Technology Officer Option exercise M +13,451 2.13 725,748 Form 4
2026-05-04 Frichtl MarkChief Technology Officer Option exercise M +21,149 2.13 733,446 Form 4
2026-04-22 Frichtl MarkChief Technology Officer Option exercise M +400 2.13 712,697 Form 4
2026-04-21 Frichtl MarkChief Technology Officer Option exercise M +60,000 2.13 772,297 Form 4
2026-04-20 Frichtl MarkChief Technology Officer Option exercise M +60,000 2.13 772,297 Form 4
2026-04-17 Frichtl MarkChief Technology Officer Option exercise M +30,000 2.13 742,297 Form 4
2026-04-15 Frichtl MarkChief Technology Officer Option exercise M +20,000 2.13 732,297 Form 4
2026-04-14 Frichtl MarkChief Technology Officer Option exercise M +40,000 2.13 752,297 Form 4
2026-04-12 Pacala Charles AngusDirector, President and CEO Grant or award A +138,376 – 1,099,036 Form 4
2026-04-11 Frichtl MarkChief Technology Officer Grant or award A +75,415 – 712,297 Form 4
2026-04-11 Chung MeganGeneral Counsel and Secretary Grant or award A +46,125 – 219,673 Form 4
2026-04-11 Gianella Kenneth P.Chief Financial Officer Grant or award A +55,351 – 355,351 Form 4
2026-04-11 Spencer DarienChief Operating Officer Grant or award A +46,125 – 371,375 Form 4
2026-04-06 Heystee SusanDirector Grant or award A +1,458 19.31 44,410 Form 4
2026-03-25 Frichtl MarkChief Technology Officer Option exercise M +40,000 2.13 676,882 Form 4
2026-01-05 Heystee SusanDirector Grant or award A +1,327 24.80 42,952 Form 4
2025-12-08 Eyler PhillipDirector Grant or award A +11,683 – 11,683 Form 4
2025-12-08 Eyler PhillipDirector Grant or award A +3,975 – 15,658 Form 4
2025-10-06 Heystee SusanDirector Grant or award A +1,010 32.43 53,275 Form 4
2025-07-07 Heystee SusanDirector Grant or award A +1,712 22.42 92,654 Form 4
2025-06-18 Skaggs Stephen ADirector Grant or award A +13,558 – 71,690 Form 4
2025-06-18 Heystee SusanDirector Grant or award A +13,558 – 90,942 Form 4
2025-06-18 Boulet VirginiaDirector Grant or award A +13,558 – 221,842 Form 4
2025-06-18 Correia ChristinaDirector Grant or award A +13,558 – 71,690 Form 4
2025-06-18 Tewksbury Ted L IIIDirector Grant or award A +13,558 – 127,054 Form 4
2025-06-18 Maddock Ernest eDirector Grant or award A +13,558 – 82,677 Form 4
2025-06-18 Maddock Ernest eDirector Grant or award A +1,500 – 84,177 Form 4
2025-05-19 Gianella Kenneth P.Chief Financial Officer Grant or award A +300,000 – 300,000 Form 4
2025-05-13 Heystee SusanDirector Returned to the company D −45,019 11.20 77,384 Form 4
2025-04-07 Heystee SusanDirector Grant or award A +3,629 7.43 122,403 Form 4
2025-04-01 Frichtl MarkChief Technology Officer Grant or award A +175,000 – 688,121 Form 4
2025-03-31 Pacala Charles AngusDirector, President and CEO Grant or award A +275,000 – 1,044,957 Form 4
2025-03-21 Chung MeganGeneral Counsel and Secretary Grant or award A +80,000 – 226,562 Form 4
2025-03-21 Geng ChenInterim CFO Grant or award A +30,000 – 68,090 Form 4
2025-03-21 Spencer DarienChief Operating Officer Grant or award A +80,000 – 366,732 Form 4
2025-01-06 Heystee SusanDirector Grant or award A +2,960 – 118,774 Form 4
2024-11-04 Correia ChristinaDirector Grant or award A +43,373 – 43,373 Form 4
2024-11-04 Correia ChristinaDirector Grant or award A +14,759 – 58,132 Form 4
2024-11-04 Skaggs Stephen ADirector Grant or award A +43,373 – 43,373 Form 4
2024-11-04 Skaggs Stephen ADirector Grant or award A +14,759 – 58,132 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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