Melvin K Spigelman
CIK 1339901 · last filed 2026-03-23
Melvin K Spigelman is a corporate insider who has filed 31 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for ANTX, was dated Mar 23, 2026. Across all open-market trades the lifetime net is −$1.6M, making them a net seller over the disclosed history.
"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.
$0
4
31
-$1.61M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ANTX | Director | — | $4.74 | — | $0 | 6 | 2026-03-23 |
| SYNERGY PHARMACEUTICALS, INC. (SGYP) Delisted | Director | 48,305 | — | — | $0 | 3 | 2018-08-16 |
| MEDICINES CO /DE (MDCO) Delisted | Director | 60,633 | — | — | -$1.61M | 14 | 2018-05-29 |
| SYNERGY PHARMACEUTICALS, INC. (SGYPW) Delisted | Director | — | — | — | $0 | 8 | 2016-06-29 |
Recent Filings
31 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-23 | ANTX | Mixed | — | $0 | EDGAR |
| 2026-02-23 | ANTX | Grant (A) | — | $0 | EDGAR |
| 2025-05-23 | ANTX | Grant (A) | — | $0 | EDGAR |
| 2024-06-21 | ANTX | Grant (A) | — | $0 | EDGAR |
| 2023-06-09 | ANTX | Grant (A) | — | $0 | EDGAR |
| 2022-05-16 | ANTX | Grant (A) | — | $0 | EDGAR |
| 2018-08-16 | SYNERGY PHARMACEUTICALS, INC. (SGYP) Delisted | Mixed | +48,305 | $180.0K | EDGAR |
| 2018-06-19 | SYNERGY PHARMACEUTICALS, INC. (SGYP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2018-05-29 | MEDICINES CO /DE (MDCO) Delisted | Mixed | — | -$104.3K | EDGAR |
| 2017-06-30 | SYNERGY PHARMACEUTICALS, INC. (SGYP) Delisted | Mixed | — | $0 | EDGAR |