ALEC
ALECTOR (ALEC)
NASDAQ
$1.82-$0.04 (-2.26%)
Price as of Oct 02, 2026 5:37 PM EDT
  • $207.7M
    Market Cap
  • -41.14%
    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%)
Jun 30, 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.
7.07%
7.8M
+106,634 (+1.36%)
Jun 30, 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
3.98%
4.4M
+375,560 (+8.51%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.3B (77.83%)
  • Mutual Funds334.7M (20.05%)
  • Insiders35.5M (2.13%)
  • Other0 (0.00%)

Insider Transactions

  • 2.13% (35.5M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 3
    Number of InsiderSelling (last 12 months)
  • $14.1M
    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
Sep 04, 2026
$9,094.40
3,625
$2.51
106,015
Rosenthal Arnon
Chief Executive Officer
Sell
Sep 03, 2026
$193,473.21
72,606
$2.66
2.3M
Berkley Neil Lindsay
CFO & Chief Business Officer
Sell
Sep 03, 2026
$77,948.06
29,251
$2.66
350,649
Wong-Sarad Grace
Principal Accounting Officer
Sell
Sep 03, 2026
$13,767.31
5,165
$2.67
109,640
Wong-Sarad Grace
Principal Accounting Officer
Sell
Sep 02, 2026
$1,804.00
656
$2.75
114,805
Rosenthal Arnon
Chief Executive Officer
Gift
Aug 19, 2026
$0.00
1.1M
$0.00
922,875
Rosenthal Arnon
Chief Executive Officer
Gift
Aug 19, 2026
$0.00
350,000
$0.00
1.0M
Rosenthal Arnon
Chief Executive Officer
Gift
Aug 19, 2026
$0.00
350,000
$0.00
1.0M
Rosenthal Arnon
Chief Executive Officer
Gift
Aug 19, 2026
$0.00
350,000
$0.00
1.0M
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
Hammond Paula
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
LAVIGNE LOUIS J JR
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
Hammond Paula
Award
Jun 17, 2026
$0.00
28,700
$0.00
103,609
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
LAVIGNE LOUIS J JR
Award
Jun 17, 2026
$0.00
28,700
$0.00
128,109
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