Blackmore Milton C sold INNOSPEC INC. ($IOSP) shares on the open market four times in the last year, totaling $175 thousand. His most recent sale occurred on February 27, 2026. These sales rank 8,712th among 11,678 individual insiders, where the average is $8.6 million across about 6.4 transactions per insider. Blackmore has made no open market purchases of $IOSP in the past year.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 287 | $76.30 | 10,837.0000 | 24,993,000 | 2.58% | 0.00% |
| Feb. 27, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 307 | $76.79 | 10,530.0000 | 24,993,000 | 2.83% | 0.00% |
| Feb. 27, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 594 | $76.56 | 10,530.0000 | 24,993,000 | 5.34% | 0.00% |
| Feb. 20, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | M | Common Stock | 1030 | $44.18 | 10,615.0000 | 24,993,000 | 10.75% | 0.00% |
| Feb. 20, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 1030 | $81.84 | 9,585.0000 | 24,993,000 | 9.70% | 0.00% |
| Feb. 23, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | A | Common Stock | 1539 | $0.00 | 11,124.0000 | 24,993,000 | 16.06% | 0.01% |
| Feb. 20, 2026 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | M | Stock Option | 1030 | $0.00 | 0.0000 | 24,993,000 | 100.00% | 0.00% |
| Feb. 24, 2025 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | A | Common Stock | 1209 | $0.00 | 9,585.0000 | 25,119,000 | 14.43% | 0.00% |
| Feb. 21, 2025 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 652 | $103.30 | 8,376.0000 | 25,119,000 | 7.22% | 0.00% |
| Nov. 13, 2024 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | M | Common Stock | 1035 | $43.95 | 10,063.0000 | 25,103,000 | 11.46% | 0.00% |
| Nov. 13, 2024 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 1035 | $122.92 | 9,028.0000 | 25,103,000 | 10.29% | 0.00% |
| Nov. 13, 2024 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | M | Stock Option (Right to Buy) | 1035 | $0.00 | 0.0000 | 25,103,000 | 100.00% | 0.00% |
| Feb. 26, 2024 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | A | Common Stock | 782 | $0.00 | 9,028.0000 | 25,022,000 | 9.48% | 0.00% |
| Feb. 22, 2024 | INNOSPEC INC. | $IOSP | Blackmore Milton C | Not found | S | Common Stock | 601 | $122.07 | 8,246.0000 | 25,022,000 | 6.79% | 0.00% |