Spencer Darien, Chief Operating Officer of Ouster, Inc. ($OUST), sold shares on the open market four times in the last 365 days, totaling about $855 thousand. His most recent sale occurred on December 12, 2025. These sales rank 5,290th among over 11,600 insiders in the database by total value sold, compared to an average of $8.6 million per insider and about six transactions. Darien made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 12, 2026 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 10938 | $23.43 | 325,250.0000 | 60,005,219 | 3.25% | 0.02% |
| Dec. 12, 2025 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 10919 | $24.98 | 336,188.0000 | 60,005,219 | 3.15% | 0.02% |
| Sept. 12, 2025 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 18274 | $28.46 | 346,132.0000 | 53,765,990 | 5.01% | 0.03% |
| June 12, 2025 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 3226 | $18.76 | 364,406.0000 | 53,765,990 | 0.88% | 0.01% |
| March 21, 2025 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | A | Common Stock | 80000 | $0.00 | 366,732.0000 | 53,765,990 | 27.90% | 0.15% |
| March 17, 2025 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 249 | $8.02 | 286,732.0000 | 0 | 0.09% | 0.00% |
| March 12, 2025 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 4489 | $7.63 | 286,981.0000 | 0 | 1.54% | 0.00% |
| Dec. 16, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 248 | $9.08 | 291,470.0000 | 0 | 0.09% | 0.00% |
| Dec. 12, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 14869 | $9.69 | 291,718.0000 | 0 | 4.85% | 0.00% |
| Sept. 17, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 263 | $6.36 | 305,612.0000 | 0 | 0.09% | 0.00% |
| Sept. 12, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 3844 | $6.16 | 305,875.0000 | 0 | 1.24% | 0.00% |
| June 18, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 248 | $10.87 | 309,719.0000 | 0 | 0.08% | 0.00% |
| June 12, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 3836 | $11.14 | 309,967.0000 | 0 | 1.22% | 0.00% |
| March 28, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | A | Common Stock | 60930 | $0.00 | 313,803.0000 | 0 | 24.10% | 0.00% |
| March 18, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 286 | $4.84 | 252,873.0000 | 0 | 0.11% | 0.00% |
| March 12, 2024 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 4655 | $5.13 | 253,159.0000 | 0 | 1.81% | 0.00% |
| Dec. 18, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 241 | $6.85 | 257,814.0000 | 0 | 0.09% | 0.00% |
| Dec. 12, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 3726 | $5.98 | 258,055.0000 | 0 | 1.42% | 0.00% |
| Sept. 18, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 243 | $4.65 | 261,781.0000 | 0 | 0.09% | 0.00% |
| Sept. 12, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 3802 | $4.81 | 262,024.0000 | 0 | 1.43% | 0.00% |
| June 16, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 241 | $5.82 | 265,826.0000 | 0 | 0.09% | 0.00% |
| June 12, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 3696 | $5.66 | 266,067.0000 | 0 | 1.37% | 0.00% |
| March 16, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | A | Common Stock | 1120000 | $0.00 | 2,697,580.0000 | 0 | 70.99% | 0.00% |
| March 16, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 2885 | $0.89 | 1,577,580.0000 | 0 | 0.18% | 0.00% |
| March 14, 2023 | Ouster, Inc. | $OUST | SPENCER DARIEN | Chief Operating Officer | S | Common Stock | 15322 | $0.90 | 1,580,465.0000 | 0 | 0.96% | 0.00% |