Blackmore Milton C
Director · IOSP
As of 2026-09-16, Blackmore Milton C has 7 Form 4 transactions on record across 1 company — 5 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in February in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $979K
- Indirect $0
| IOSP | direct | 10,530 sh | $979K |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-02-27 | IOSP | Sale | 594 @ $76.56 | $45K | −5.3% of holding | 10,530 | Form 4 |
| 2026-02-20 | IOSP | Sale | 1,030 @ $81.84 | $84K | −9.7% of holding | 9,585 | Form 4 |
| 2025-02-21 | IOSP | Sale | 652 @ $103.30 | $67K | −7.2% of holding | 8,376 | Form 4 |
4 award / exercise / gift records — not counted as purchases
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.