W. Michael Flanagan
CIK 1841990 · Chief Scientific Officer · last filed 2026-03-02
W. Michael Flanagan is a Chief Scientific Officer who has filed 29 SEC Form 4 insider transactions across 2 companies since 2021. Across all open-market trades the lifetime net is −$13.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.0M 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.
$1.01M
2
29
-$13.50M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Avidity Biosciences, Inc. (RNAM) Delisted | Chief Scientific Officer | 0 | — | — | $0 | 1 | 2026-02-27 |
| RNA | Chief Scientific Officer | 87,651 | $11.49 | $1.01M | -$13.50M | 20 | 2026-01-23 |
Recent Filings
29 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-02 | — | Grant (A) | — | $0 | |
| 2026-02-27 | Avidity Biosciences, Inc. (RNAM) Delisted | Disp (D) | −150,365 | $0 | EDGAR |
| 2026-01-23 | RNA | Sell (S) | −6,534 | -$473.4K | EDGAR |
| 2026-01-09 | RNA | Sell (S) | −2,373 | -$171.4K | EDGAR |
| 2025-12-19 | RNA | Mixed | +13,805 | -$984.3K | EDGAR |
| 2025-09-12 | RNA | Mixed | — | -$494.3K | EDGAR |
| 2025-09-11 | Avidity Biosciences, Inc. (RNAM) Delisted | Notice (144) | −20,000 | -$928.0K | EDGAR |
| 2025-06-12 | RNA | Mixed | — | -$373.3K | EDGAR |
| 2025-06-11 | Avidity Biosciences, Inc. (RNAM) Delisted | Notice (144) | −20,000 | -$672.4K | EDGAR |
| 2025-03-21 | RNA | Sell (S) | −11,780 | -$365.9K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.