Milton C Blackmore
CIK 1493440 · last filed 2026-03-06
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$998.4K
Companies
1
Total Filings
38
Lifetime Open-Market Net
-$760.5K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| IOSP | Director | 11,530 | $86.59 | $998.4K | -$760.5K | 38 | 2026-03-06 |
Recent Filings · Page 3 of 4
38 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2017-11-30 | IOSP | Mixed | — | -$27.0K | EDGAR |
| 2017-09-08 | IOSP | Buy (P) | +442 | $24.2K | EDGAR |
| 2017-02-23 | IOSP | Grant (A) | — | $0 | EDGAR |
| 2016-12-07 | IOSP | Mixed | — | -$29.4K | EDGAR |
| 2016-02-24 | IOSP | Grant (A) | — | $0 | EDGAR |
| 2016-02-24 | IOSP | Grant (A) | — | $0 | EDGAR |
| 2016-02-23 | IOSP | Mixed | +850 | -$2 | EDGAR |
| 2015-02-24 | IOSP | Grant (A) | — | $0 | EDGAR |
| 2015-02-20 | IOSP | Exer (M) | +1,000 | $0 | EDGAR |
| 2014-02-18 | IOSP | Grant (A) | — | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.