Ouster's three largest insider shareholders as of September 09, 2026 are Krishna Kantheti (TenPercentOwner, 2.44Mn shares), Krishna Kantheti (TenPercentOwner, 2.44Mn shares), Krishna Kantheti (TenPercentOwner, 2.44Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Krishna Kantheti | TenPercentOwner | 0 | 2,443,226 | 2,443,226 | 28.0% | 17 Aug, 2023 |
| 2 | Remy W Trafelet | Director | 1,661,450 | 0 | 1,661,450 | 19.0% | 09 Jan, 2023 |
| 3 | Charles Angus Pacala | President And Ceo | 1,634,582 | 0 | 1,634,582 | 18.7% | 16 Jun, 2026 |
| 4 | Mark Frichtl | Chief Technology Officer | 337,765 | 0 | 337,765 | 3.9% | 04 Sep, 2026 |
| 5 | Darien Spencer | Chief Operating Officer | 299,807 | 0 | 299,807 | 3.4% | 05 Aug, 2026 |
| 6 | Kenneth P. Gianella | Chief Financial Officer | 261,014 | 0 | 261,014 | 3.0% | 19 Aug, 2026 |
| 7 | Anna Brunelle | Chief Financial Officer | 232,062 | 0 | 232,062 | 2.7% | 20 Dec, 2022 |
| 8 | Virginia Boulet | Director | 230,000 | 0 | 230,000 | 2.6% | 12 May, 2026 |
| 9 | Megan Chung | General Counsel And Secretary | 202,859 | 0 | 202,859 | 2.3% | 16 Jun, 2026 |
| 10 | Riaz Valani | Director | 186,254 | 0 | 186,254 | 2.1% | 14 Feb, 2023 |
| 11 | Mark Weinswig | Chief Financial Officer | 173,960 | 0 | 173,960 | 2.0% | 16 Dec, 2024 |
| 12 | Shauna Mcintyre | Pres. Of Ouster Automotive | 157,225 | 0 | 157,225 | 1.8% | 26 Oct, 2021 |
| 13 | Ted L Iii Tewksbury | Director | 124,999 | 0 | 124,999 | 1.4% | 22 Jun, 2026 |
| 14 | Cyrille Jacquemet | Chief Revenue Officer | 114,435 | 0 | 114,435 | 1.3% | 16 Jun, 2026 |
| 15 | Nathan Dickerman | President Of Field Operations | 104,069 | 0 | 104,069 | 1.2% | 17 Aug, 2023 |
| 16 | Ernest E Maddock | Director | 88,902 | 0 | 88,902 | 1.0% | 22 Jun, 2026 |
| 17 | Christina Correia | Director | 76,415 | 0 | 76,415 | 0.9% | 22 Jun, 2026 |
| 18 | Adam Dolinko | Officer | 71,485 | 0 | 71,485 | 0.8% | 14 Dec, 2022 |
| 19 | Chen Geng | Interim Cfo | 68,090 | 0 | 68,090 | 0.8% | 25 Mar, 2025 |
| 20 | Stephen A Skaggs | Director | 61,415 | 0 | 61,415 | 0.7% | 07 Aug, 2026 |
| 21 | Karin Radstrom | Director | 60,148 | 0 | 60,148 | 0.7% | 09 Oct, 2024 |
| 22 | Kristin Slanina | Director | 46,421 | 0 | 46,421 | 0.5% | 09 Jul, 2024 |
| 23 | Susan Heystee | Interim Chief Revenue Officer | 40,479 | 0 | 40,479 | 0.5% | 08 Jul, 2026 |
| 24 | Phillip Eyler | Director | 20,383 | 0 | 20,383 | 0.2% | 22 Jun, 2026 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 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 | Phillip Eyler | Director | Acquired A | 4,725 | $0.00 | $0 | 20,383 | Direct |
| 17 Jun, 2026 | Christina Correia | Director | Acquired A | 4,725 | $0.00 | $0 | 76,415 | 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 | Ernest E Maddock | Director | Acquired A | 4,725 | $0.00 | $0 | 88,902 | Direct |
| 22 Jun, 2026 | Ted L Iii Tewksbury | Director | Disposed S | 1,695 | $47.00 | $79.67K | 124,999 | Direct |
| 12 Jun, 2026 | Mark Frichtl | Chief Technology Officer | Disposed S | 18,414 | $38.82 | $714.89K | 276,510 | Direct |
| 12 Jun, 2026 | Darien Spencer | Chief Operating Officer | Disposed S | 12,559 | $38.82 | $487.58K | 329,807 | Direct |