Insider · CIK 0001493440
Milton C Blackmore
Files at IOSP (INNOSPEC INC.). First filing Nov 14, 2024, latest Mar 6, 2026.
Milton C Blackmore files SEC Form 4 as director at IOSP (INNOSPEC INC.). Since Nov 14, 2024, Milton C Blackmore has reported 0 open-market buys worth $0 and 5 open-market sells worth $370k, the latest filed on Mar 6, 2026.
A track record needs three past buys with six months of prices behind them; Milton C Blackmore has 0, so none is measured yet.
The newest scored trade: sold $45k of IOSP on Feb 27, 2026, filed Mar 6, 2026, scored 36 (weak). In the last 12 months: 0 buys worth $0 and 3 sells worth $175k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
IOSP: INNOSPEC INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 36Weak | INNOSPEC INC. | $45k 594 shares | -5% | +8% from low-25% from high | |
| 36Weak | INNOSPEC INC. | $45k 594 shares | -5% | +8% from low-25% from high | |
| 24Weak | INNOSPEC INC. | $84k 1,030 shares | -10% | +15% from low-20% from high | |
| 38Weak | INNOSPEC INC. | $67k 652 shares | -7% | - | |
| 31Weak | INNOSPEC INC. | $127k 1,035 shares | -10% | - |
Transactions
Every row this insider has filed, 12 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Feb 27, 2026 | IOSP INNOSPEC INC. | SOpen-market sale Common Stock | -287 | $76.30 | $22k | 10,837 | Mar 6, 2026 |
| Feb 27, 2026 | IOSP INNOSPEC INC. | SOpen-market sale Common Stock | -307 | $76.79 | $24k | 10,530 | Mar 6, 2026 |
| Feb 27, 2026 | IOSP INNOSPEC INC. | SOpen-market sale Common Stock | -594 | $76.56 | $45k | 10,530 | Mar 3, 2026 |
| Feb 20, 2026 | IOSP INNOSPEC INC. | MOption exercise Common Stock | +1,030 | $44.18 | $46k | 10,615 | Feb 24, 2026 |
| Feb 20, 2026 | IOSP INNOSPEC INC. | SOpen-market sale Common Stock | -1,030 | $81.84 | $84k | 9,585 | Feb 24, 2026 |
| Feb 23, 2026 | IOSP INNOSPEC INC. | AGrant or award Common Stock | +1,539 | $0.00 | $0 | 11,124 | Feb 24, 2026 |
| Feb 20, 2026 | IOSP INNOSPEC INC. | MOption exercise Stock Optionderivative | -1,030 | $0.00 | $0 | 0 | Feb 24, 2026 |
| Feb 24, 2025 | IOSP INNOSPEC INC. | AGrant or award Common Stock | +1,209 | $0.00 | $0 | 9,585 | Feb 27, 2025 |
| Feb 21, 2025 | IOSP INNOSPEC INC. | SOpen-market sale Common Stock | -652 | $103.30 | $67k | 8,376 | Feb 24, 2025 |
| Nov 13, 2024 | IOSP INNOSPEC INC. | MOption exercise Common Stock | +1,035 | $43.95 | $45k | 10,063 | Nov 14, 2024 |
| Nov 13, 2024 | IOSP INNOSPEC INC. | SOpen-market sale Common Stock | -1,035 | $122.92 | $127k | 9,028 | Nov 14, 2024 |
| Nov 13, 2024 | IOSP INNOSPEC INC. | MOption exercise Stock Option (Right to Buy)derivative | -1,035 | $0.00 | $0 | 0 | Nov 14, 2024 |
Questions about Milton C Blackmore
Answered from the filings on this page, as of the latest one.
Is Milton C Blackmore buying or selling?
In the last 12 months Milton C Blackmore reported 0 open-market buys worth $0 and 3 open-market sells worth $175k on SEC Form 4; the latest was sold $45k of IOSP on Feb 27, 2026. Grants, option exercises and tax withholding are not counted.
How did Milton C Blackmore's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Milton C Blackmore has 0.
Where does Milton C Blackmore file Form 4?
Milton C Blackmore has filed Form 4 at IOSP (INNOSPEC INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.