William John Sibold
CIK 1518611 · President and CEO · last filed 2026-03-06
William John Sibold is a President and CEO who has filed 12 SEC Form 4 insider transactions across 2 companies since 2011. The most recent filing, for MDGL, was dated Mar 6, 2026. Across all open-market trades the lifetime net is −$11.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $77.8M across reported positions.
"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.
$77.80M
2
12
-$11.25M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MDGL | President and CEO | 161,829 | $480.77 | $77.80M | -$11.25M | 11 | 2026-03-06 |
| AVANIR PHARMACEUTICALS, INC. (AVNR) Delisted | 20,000 | — | — | $0 | 1 | 2011-05-05 |
Recent Filings
12 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-06 | MDGL | Mixed | +13,332 | -$718.3K | EDGAR |
| 2026-01-26 | MDGL | Sell (S) | −1,577 | -$776.5K | EDGAR |
| 2025-12-04 | MDGL | Mixed | +47,600 | -$1.38M | EDGAR |
| 2025-09-09 | MDGL | Sell (S) | −7,279 | -$3.24M | EDGAR |
| 2025-08-21 | MDGL | Sell (S) | −7,616 | -$3.05M | EDGAR |
| 2025-03-07 | MDGL | Grant (A) | +13,066 | $0 | EDGAR |
| 2025-02-28 | MDGL | Exer (M) | +50,000 | $0 | EDGAR |
| 2025-01-27 | MDGL | Sell (S) | −1,584 | -$531.0K | EDGAR |
| 2024-09-11 | MDGL | Sell (S) | −6,363 | -$1.55M | EDGAR |
| 2024-01-25 | MDGL | Grant (A) | +12,250 | $0 | EDGAR |