Mills Stephen
Director · AMCX, SIGI, MSGS
As of 2026-09-16, Mills Stephen has 10 Form 4 transactions on record across 3 companies — 6 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.
Reconstructed holdings
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 |
|---|
10 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-15 | AMCX | Option exercise | 29,236 | 29,736 | Form 4 |
| 2026-09-15 | AMCX | Disposition | 29,236 | 500 | Form 4 |
| 2026-09-15 | AMCX | Option exercise | 29,236 | 0 | Form 4 |
| 2026-09-15 | AMCX | Option exercise | 29,236 | 0 | Form 4 |
| 2026-05-01 | SIGI | Award / grant | 1,767 | 8,311 | Form 4 |
| 2025-12-08 | MSGS | Award / grant | 727 | 5,347 | Form 4 |
| 2025-06-05 | AMCX | Award / grant | 21,194 | 29,236 | Form 4 |
| 2025-06-05 | AMCX | Award / grant | 21,194 | 29,236 | Form 4 |
| 2025-05-02 | SIGI | Award / grant | 2,025 | 6,516 | Form 4 |
| 2024-12-04 | MSGS | Award / grant | 709 | 4,620 | Form 4 |
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.