MARGARET A HAMBURG
CIK 1266917 · last filed 2026-05-22
MARGARET A HAMBURG is a corporate insider who has filed 15 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for ALNY, was dated May 22, 2026. Across all open-market trades the lifetime net is −$2.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.4M 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.
$1.36M
2
15
-$2.30M
Holdings By Company
Recent Filings
15 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-22 | ALNY | Grant (A) | +671 | $0 | EDGAR |
| 2025-05-12 | ALNY | Grant (A) | +775 | $0 | EDGAR |
| 2024-05-20 | ALNY | Grant (A) | — | $0 | EDGAR |
| 2023-05-19 | ALNY | Grant (A) | — | $0 | EDGAR |
| 2023-02-27 | ALNY | Exer (M) | +136 | $0 | EDGAR |
| 2022-05-20 | ALNY | Grant (A) | — | $0 | EDGAR |
| 2022-02-25 | ALNY | Grant (A) | — | $0 | EDGAR |
| 2021-07-19 | ALNY | Grant (A) | — | $0 | EDGAR |
| 2020-07-06 | ALNY | Grant (A) | — | $0 | EDGAR |
| 2019-07-02 | ALNY | Grant (A) | — | $0 | EDGAR |