Alector (ALEC)
Develops brain-penetrant therapies for neurodegenerative disease through its ABC delivery platform.
$2.01
vs last close+0.08 (+4.18%)
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13F · 13D/G · Form 4
| Institutions | 82.45% | 92.06M shares | |
|---|---|---|---|
| 147 holders · as of Jun 30, 2026 | |||
| Insiders | 8.84% | 9.87M shares | |
| 13 holders · as of Sep 4, 2026 | |||
| Other | 8.71% | 9.73M shares | |
| remainder | |||
111.66M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
147 holders · 92.06M shares · 15 new positions · 74 increased · 36 reduced · 10 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| TCG Crossover Management, LLC | 10.00M | 8.96% | 0 | Aug 14, 2026 |
| BlackRock, Inc. | 7.85M | 7.03% | +106.6K | Aug 7, 2026 |
| Acadian Asset Management LLC | 4.41M | 3.95% | +375.6K | Aug 13, 2026 |
| Nantahala Capital Management, LLC | 4.32M | 3.87% | +1.50M | Aug 19, 2026 |
| Vanguard Capital Management LLC | 4.01M | 3.59% | +330.6K | Aug 13, 2026 |
| Kynam Capital Management, LP | 3.81M | 3.41% | +1.81M | Aug 14, 2026 |
| Merck & Co., Inc. | 3.55M | 3.18% | 0 | Aug 7, 2026 |
| Balyasny Asset Management L.P. | 3.25M | 2.91% | +312.2K | Aug 14, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| RA Capital Management, L.P.incl. Rajeev Shah, RA Capital Healthcare Fund, L.P. +1 more | 9.90% | 9.70M | 13G | Dec 6, 2024 |
| Arnon Rosenthal | 7.40% | 8.21M | 13G | Feb 6, 2026 |
| BlackRock, Inc. | 5.20% | 5.78M | 13G | Apr 27, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 3, 2026 | Arnon Rosenthaldirector, officer: Chief Executive Officer | Sale | 72,606 | $2.66 | 2,294,600 |
| Sep 3, 2026 | Neil Lindsay Berkleyofficer: CFO & Chief Business Officer | Sale | 29,251 | $2.66 | 350,649 |
| Sep 4, 2026 | Grace Wong-Saradofficer: Principal Accounting Officer | Sale | 3,625 | $2.51 | 106,015 |
| Sep 3, 2026 | Grace Wong-Saradofficer: Principal Accounting Officer | Sale | 5,165 | $2.67 | 109,640 |
| Sep 2, 2026 | Grace Wong-Saradofficer: Principal Accounting Officer | Sale | 656 | $2.75 | 114,805 |
| Apr 16, 2026 | Grace Wong-Saradofficer: Principal Accounting Officer | Sale | 1,820 | $2.65 | 104,645 |
| Mar 10, 2026 | Grace Wong-Saradofficer: Principal Accounting Officer | Sale | 1,000 | $2.65 | 106,465 |
| Mar 2, 2026 | Neil Lindsay Berkleyofficer: CFO & Chief Business Officer | Sale | 29,649 | $2.12 | 344,660 |
| Mar 2, 2026 | Arnon Rosenthaldirector, officer: Chief Executive Officer | Sale | 81,864 | $2.12 | 2,338,176 |
| Mar 2, 2026 | Grace Wong-Saradofficer: Principal Accounting Officer | Sale | 8,071 | $2.12 | 110,832 |
House and Senate disclosures
Not reported.