ALEC
ALECTOR (ALEC)
NASDAQ
$1.80+$0.02 (+1.13%)
Price as of Jun 03, 2026 6:44 PM EDT
  • $239.8M
    Market Cap
  • 14.52%
    1-Year Change
  • Biotechnology
    Industry

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

Current Ownership Distribution

  • Institutions1.2B (78.67%)
  • Mutual Funds291.8M (19.01%)
  • Insiders35.5M (2.31%)
  • Other0 (0.00%)

Insider Transactions

  • 2.31% (35.5M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 5
    Number of InsiderSelling (last 12 months)
  • $19.1M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Wong-Sarad Grace
Principal Accounting Officer
Sell
Jun 03, 2026
$6,542.73
3,475
$1.88
95,461
Berkley Neil Lindsay
CFO & Chief Business Officer
Sell
Jun 02, 2026
$38,220.51
19,360
$1.97
379,900
Rosenthal Arnon
Chief Executive Officer
Sell
Jun 02, 2026
$172,190.55
87,216
$1.97
2.4M
Wong-Sarad Grace
Principal Accounting Officer
Sell
Jun 02, 2026
$11,270.71
5,709
$1.97
98,936
SCHELLER RICHARD H
Award
Jun 01, 2026
$0.00
10,833
$0.00
106,199
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
Berkley Neil Lindsay
Principal Financial Officer
Sell
Sep 02, 2025
$39,554.31
15,842
$2.50
346,570
Hammond Paula
Sell
Aug 26, 2025
$32,998.00
14,000
$2.36
74,909
Berkley Neil Lindsay
Principal Financial Officer
Award
Jul 01, 2025
$0.00
18,000
$0.00
18,000
Rosenthal Arnon
Chief Executive Officer
Award
Jul 01, 2025
$0.00
45,700
$0.00
45,700
Kenkare-Mitra Sara
President and Head of R&D
Award
Jul 01, 2025
$0.00
18,250
$0.00
18,250
Rosenthal Arnon
Chief Executive Officer
Award
Jul 01, 2025
$0.00
137,125
$0.00
2.6M
Kenkare-Mitra Sara
President and Head of R&D
Award
Jul 01, 2025
$0.00
54,725
$0.00
566,977
Yaffe Kristine
Sell
Jun 20, 2025
$1,440.00
1,000
$1.44
95,409
Yaffe Kristine
Award
Jun 11, 2025
$0.00
9,450
$0.00
9,450