🕵️ Avidity Biosciences, Inc. ($RNAM)
SEC insider & ownership activity, last 12 months · CIK 1599901 · every row links its SEC filing
Over the last 12 months insiders sold $6.4M with no open-market buying against it. Teresa McCarthy sold $2.0M through a 10b5-1 trading plan in 5 lots (Sep–Jan). BlackRock, Inc. trimmed 7.5% → 6.4%. One red-flag 8-K in the window: Delisting notice (3.01), Feb 26, 2026.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 9 sellers, $6.4M (24 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Teresa McCarthy | 0 | – | 5 | $2.0M | Jan 21, 2026 |
| Boyce Sarah | 0 | – | 3 | $1.7M | Jan 21, 2026 |
| Hughes Steven George | 0 | – | 6 | $791K | Jan 21, 2026 |
| William Michael Flanagan | 0 | – | 3 | $645K | Jan 21, 2026 |
| Michael F. MacLean | 0 | – | 3 | $472K | Jan 21, 2026 |
| Eric Mosbrooker | 0 | – | 1 | $298K | Oct 3, 2025 |
| Calderaro Charles III | 0 | – | 1 | $269K | Jan 7, 2026 |
| John B. Moriarty | 0 | – | 1 | $171K | Jan 7, 2026 |
| Arthur A. Levin | 0 | – | 1 | $127K | Jan 21, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| The Vanguard Group | 9.6% | 13G | Oct 30, 2025 | filing ↗ | |
| Wellington Management Company LLP | 7.5% | 13G | May 12, 2025 | filing ↗ | |
| BlackRock, Inc. | 6.4% | 13G | Oct 17, 2025 | filing ↗ | |
| Avoro Capital Advisors LLC | 5.5% | 13G | Feb 17, 2026 | filing ↗ | |
| Behzad Aghazadeh | 5.5% | 13G | Feb 17, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Agreement terminated (1.02) | Feb 26, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Feb 26, 2026 | filing ↗ |
| Delisting notice (3.01) | Feb 26, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Feb 26, 2026 | filing ↗ |
| Change of control (5.01) | Feb 26, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 26, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Shareholder vote (5.07) | Feb 26, 2026 | filing ↗ |
| Other events (8.01) | Feb 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 23, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 2, 2026 | filing ↗ |
| Other events (8.01) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 14, 2025 | filing ↗ |
| Other events (8.01) | Dec 14, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 14, 2025 | filing ↗ |
| Earnings (2.02) | Nov 10, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 10, 2025 | filing ↗ |
| Material agreement (1.01) | Oct 25, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 25, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 25, 2025 | filing ↗ |
| Other events (8.01) | Oct 13, 2025 | filing ↗ |