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ALECTOR (ALEC)
NASDAQ
$1.82-$0.02 (-0.82%)
Price as of Jun 23, 2026 7:58 PM EDT- $197.6MMarket Cap
- 22.82%1-Year Change
- BiotechnologyIndustry
ALECTOR (ALEC)
$1.82-$0.02 (-0.82%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
TCG CROSSOVER MANAGEMENT, LLC | 9.01% | 10.0M | 0 (0.00%) | Mar 31, 2026 |
BLACKROCK FUNDING, INC. /DE | 8.23% | 9.1M | -215,297 (-2.36%) | Dec 31, 2024 |
BLACKROCK INC. | 8.20% | 9.1M | +617,872 (+6.79%) | Jun 30, 2024 |
BLACKROCK, INC. | 6.97% | 7.7M | +593,479 (+7.67%) | Mar 31, 2026 |
RTW INVESTMENTS, LP | 6.30% | 7.0M | +7.0M (+100.00%) | Sep 30, 2025 |
VANGUARD GROUP INC | 6.22% | 6.9M | +873,395 (+12.64%) | Dec 31, 2025 |
ACADIAN ASSET MANAGEMENT LLC | 3.64% | 4.0M | +596,336 (+14.77%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
FIDELITY MT VERNON STREET TRUST | 5.46% | 6.1M | 0 (0.00%) | Feb 28, 2026 |
VANGUARD INDEX FUNDS | 3.22% | 3.6M | 0 (0.00%) | Mar 31, 2026 |
iSHARES TRUST | 2.87% | 3.2M | +273,471 (+8.59%) | Mar 31, 2026 |
FIDELITY SELECT PORTFOLIOS | 2.00% | 2.2M | 0 (0.00%) | Feb 28, 2026 |
T. Rowe Price Health Sciences Fund, Inc. | 1.43% | 1.6M | 0 (0.00%) | Mar 31, 2026 |
JPMORGAN TRUST II | 1.36% | 1.5M | 0 (0.00%) | Feb 28, 2026 |
FIDELITY CONCORD STREET TRUST | 0.76% | 848,215 | +124,669 (+14.70%) | Feb 28, 2026 |
Current Ownership Distribution
- Institutions1.2B (78.65%)
- Mutual Funds292.0M (19.02%)
- Insiders35.7M (2.33%)
- Other0 (0.00%)
Insider Transactions
- 2.33% (35.7M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 4Number of InsiderSelling (last 12 months)
- $13.4MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Altmeyer Mark | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
Yaffe Kristine | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
LAVIGNE LOUIS J JR | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
DESOUZA ERROL B | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
GAROFALO ELIZABETH A. | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
Yaffe Kristine | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 124,109 |
Hammond Paula | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
SCHELLER RICHARD H | Award | Jun 17, 2026 | $0.00 | 9,450 | $0.00 | 9,450 |
Altmeyer Mark | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 98,650 |
DESOUZA ERROL B | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 98,650 |
LAVIGNE LOUIS J JR | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 128,109 |
SCHELLER RICHARD H | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 134,899 |
GAROFALO ELIZABETH A. | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 118,650 |
Hammond Paula | Award | Jun 17, 2026 | $0.00 | 28,700 | $0.00 | 103,609 |
Berkley Neil Lindsay CFO & Chief Business Officer | Award | Mar 15, 2026 | $0.00 | 54,600 | $0.00 | 399,260 |
Rosenthal Arnon Chief Executive Officer | Award | Mar 13, 2026 | $0.00 | 116,246 | $0.00 | 2.5M |
Wong-Sarad Grace Principal Accounting Officer | Sell | Mar 10, 2026 | $2,650.00 | 1,000 | $2.65 | 106,465 |
Wong-Sarad Grace Principal Accounting Officer | Sell | Mar 03, 2026 | $7,012.11 | 3,367 | $2.08 | 107,465 |
Rosenthal Arnon Chief Executive Officer | Sell | Mar 02, 2026 | $173,821.83 | 81,864 | $2.12 | 2.3M |
Berkley Neil Lindsay CFO & Chief Business Officer | Sell | Mar 02, 2026 | $62,953.72 | 29,649 | $2.12 | 344,660 |
Wong-Sarad Grace Principal Accounting Officer | Sell | Mar 02, 2026 | $17,137.96 | 8,071 | $2.12 | 110,832 |
Wong-Sarad Grace Principal Accounting Officer | Sell | Feb 26, 2026 | $10,197.50 | 4,079 | $2.50 | 118,903 |
Berkley Neil Lindsay Chief Bus Ofcr & Interim CFO | Award | Nov 10, 2025 | $0.00 | 195,000 | $0.00 | 195,000 |
Wong-Sarad Grace Principal Accounting Officer | Award | Nov 10, 2025 | $0.00 | 48,535 | $0.00 | 48,535 |
Rosenthal Arnon Chief Executive Officer | Award | Nov 10, 2025 | $0.00 | 522,500 | $0.00 | 522,500 |
Wong-Sarad Grace Principal Accounting Officer | Award | Nov 10, 2025 | $0.00 | 32,343 | $0.00 | 135,791 |
Berkley Neil Lindsay Chief Bus Ofcr & Interim CFO | Award | Nov 10, 2025 | $0.00 | 65,000 | $0.00 | 411,570 |
Rosenthal Arnon Chief Executive Officer | Award | Nov 10, 2025 | $0.00 | 174,167 | $0.00 | 2.5M |
Wong-Sarad Grace Principal Accounting Officer | Sell | Sep 02, 2025 | $14,756.09 | 5,910 | $2.50 | 103,448 |
Rosenthal Arnon Chief Executive Officer | Sell | Sep 02, 2025 | $128,740.00 | 51,562 | $2.50 | 2.4M |