Ouster's three largest insider shareholders as of September 29, 2026 are Krishna Kantheti (TenPercentOwner, 2.44Mn shares), Charles Angus Pacala (President And Ceo, 1.04Mn shares), Charles Angus Pacala (President And Ceo, 562.38K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Krishna Kantheti | TenPercentOwner | 0 | 2,443,226 | 2,443,226 | 35.0% | 17 Aug, 2023 |
| 2 | Charles Angus Pacala | President And Ceo | 1,604,197 | 0 | 1,604,197 | 23.0% | 16 Sep, 2026 |
| 3 | Mark Frichtl | Chief Technology Officer | 318,987 | 0 | 318,987 | 4.6% | 16 Sep, 2026 |
| 4 | Darien Spencer | Chief Operating Officer | 286,999 | 0 | 286,999 | 4.1% | 16 Sep, 2026 |
| 5 | Kenneth P. Gianella | Chief Financial Officer | 245,328 | 0 | 245,328 | 3.5% | 16 Sep, 2026 |
| 6 | Anna Brunelle | Chief Financial Officer | 232,062 | 0 | 232,062 | 3.3% | 20 Dec, 2022 |
| 7 | Virginia Boulet | Director | 230,000 | 0 | 230,000 | 3.3% | 12 May, 2026 |
| 8 | Megan Chung | General Counsel And Secretary | 189,291 | 0 | 189,291 | 2.7% | 16 Sep, 2026 |
| 9 | Mark Weinswig | Chief Financial Officer | 173,960 | 0 | 173,960 | 2.5% | 16 Dec, 2024 |
| 10 | Remy W Trafelet | Director | 166,145 | 0 | 166,145 | 2.4% | 09 Jan, 2023 |
| 11 | Shauna Mcintyre | Pres. Of Ouster Automotive | 157,225 | 0 | 157,225 | 2.3% | 26 Oct, 2021 |
| 12 | Ted L Iii Tewksbury | Director | 124,999 | 0 | 124,999 | 1.8% | 22 Jun, 2026 |
| 13 | Cyrille Jacquemet | Chief Revenue Officer | 105,539 | 0 | 105,539 | 1.5% | 16 Sep, 2026 |
| 14 | Nathan Dickerman | President Of Field Operations | 104,069 | 0 | 104,069 | 1.5% | 17 Aug, 2023 |
| 15 | Ernest E Maddock | Director | 88,902 | 0 | 88,902 | 1.3% | 22 Jun, 2026 |
| 16 | Christina Correia | Director | 76,415 | 0 | 76,415 | 1.1% | 22 Jun, 2026 |
| 17 | Adam Dolinko | Officer | 71,485 | 0 | 71,485 | 1.0% | 14 Dec, 2022 |
| 18 | Chen Geng | Interim Cfo | 68,090 | 0 | 68,090 | 1.0% | 25 Mar, 2025 |
| 19 | Stephen A Skaggs | Director | 61,415 | 0 | 61,415 | 0.9% | 07 Aug, 2026 |
| 20 | Karin Radstrom | Director | 60,148 | 0 | 60,148 | 0.9% | 09 Oct, 2024 |
| 21 | Kristin Slanina | Director | 46,421 | 0 | 46,421 | 0.7% | 09 Jul, 2024 |
| 22 | Susan Heystee | Interim Chief Revenue Officer | 40,479 | 0 | 40,479 | 0.6% | 08 Jul, 2026 |
| 23 | Phillip Eyler | Director | 20,383 | 0 | 20,383 | 0.3% | 22 Jun, 2026 |
| 24 | Riaz Valani | Director | 18,625 | 0 | 18,625 | 0.3% | 14 Feb, 2023 |
| 25 | Emmanuel T Hernandez | Director | 15,355 | 0 | 15,355 | 0.2% | 09 Jan, 2023 |
| 26 | Sundari Mitra | Director | 13,931 | 0 | 13,931 | 0.2% | 09 Jan, 2023 |
| 27 | Calvo Jorge A Del | Director | 13,395 | 0 | 13,395 | 0.2% | 07 Oct, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 09 Sep, 2026 | Megan Chung | General Counsel And Secretary | Disposed G | 2,084 | $0.00 | $0 | 200,775 | Direct |
| 02 Sep, 2026 | Mark Frichtl | Chief Technology Officer | Disposed G | 38,745 | $0.00 | $0 | 337,765 | Direct |
| 26 Aug, 2026 | Mark Frichtl | Chief Technology Officer | Acquired M | 100,000 | $14.22 | $1.42Mn | 376,510 | Direct |
| 26 Aug, 2026 | Mark Frichtl | Chief Technology Officer | Disposed M | 100,000 | $0.00 | $0 | 100,713 | Direct |
| 18 Aug, 2026 | Kenneth P. Gianella | Chief Financial Officer | Disposed S | 17,927 | $44.65 | $800.42K | 283,087 | Direct |
| 18 Aug, 2026 | Kenneth P. Gianella | Chief Financial Officer | Disposed S | 13,364 | $45.52 | $608.39K | 269,723 | Direct |
| 18 Aug, 2026 | Kenneth P. Gianella | Chief Financial Officer | Disposed S | 8,201 | $46.40 | $380.56K | 261,522 | Direct |
| 18 Aug, 2026 | Kenneth P. Gianella | Chief Financial Officer | Disposed S | 508 | $47.09 | $23.92K | 261,014 | Direct |
| 05 Aug, 2026 | Stephen A Skaggs | Director | Disposed S | 1,386 | $46.48 | $64.42K | 65,029 | Direct |
| 06 Aug, 2026 | Stephen A Skaggs | Director | Disposed S | 3,614 | $45.18 | $163.28K | 61,415 | Direct |
| 04 Aug, 2026 | Darien Spencer | Chief Operating Officer | Disposed S | 30,000 | $45.00 | $1.35Mn | 299,807 | Direct |
| 06 Jul, 2026 | Susan Heystee | Director | Acquired A | 660 | $49.83 | $32.89K | 40,479 | Direct |
| 17 Jun, 2026 | Ted L Iii Tewksbury | Director | Acquired A | 4,725 | $0.00 | $0 | 126,694 | Direct |
| 17 Jun, 2026 | Susan Heystee | Director | Acquired A | 4,725 | $0.00 | $0 | 39,819 | Direct |
| 17 Jun, 2026 | Stephen A Skaggs | Director | Acquired A | 4,725 | $0.00 | $0 | 66,415 | Direct |
| 17 Jun, 2026 | Christina Correia | Director | Acquired A | 4,725 | $0.00 | $0 | 76,415 | Direct |
| 17 Jun, 2026 | Ernest E Maddock | Director | Acquired A | 4,725 | $0.00 | $0 | 88,902 | Direct |
| 17 Jun, 2026 | Phillip Eyler | Director | Acquired A | 4,725 | $0.00 | $0 | 20,383 | Direct |
| 22 Jun, 2026 | Ted L Iii Tewksbury | Director | Disposed S | 1,695 | $47.00 | $79.67K | 124,999 | Direct |
| 12 Jun, 2026 | Kenneth P. Gianella | Chief Financial Officer | Disposed S | 54,337 | $38.82 | $2.11Mn | 301,014 | Direct |