Home About FAQ Contact Key Subscribe
 
Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
Reduced Version of Subscription Insider Search
Check all filing types
Uncheck all filing types
Remove The Noise What is the 'Remove The Noise' function?
Insider Portfolio Alerts
Free real time insider alerts
Top Trade Alerts
Free insider trades intra-day
Special Screens Report
Free insider special screens report
Our Input Date Search is an excellent tool to examine the latest insider trades for new long and short investment ideas, but it is only available to paid subscribers.

Click Here to Subscribe

close window
Feature available to paying subscribers only. Subscriber output is also not separated on different pages, so that print outs and Excel downloads contain all of a search's information.

Click Here to Subscribe

close window

Detailed Insider History for:
ALECTOR INC: ALEC
Price: 6/19/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$1.75 $3.40 $1.09 $194 111 662 0.0% 4.9% 82.27% 9.47%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Biological Products, (No Disgnostic Substances)
click column headers to sort
#
View Form
Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
ROSENTHAL ARNON
CEO,DIR
S
$59,176
40,330
---
3/3/25
---
$1.47
2,466,744
-1.6
D
R
3/5/25 - 4:05:18 pm
2
    
 
GRASSO MARC
CFO
S
$26,547
18,091
---
3/3/25
---
$1.47
312,560
-5.5
D
R
3/5/25 - 4:05:13 pm
3
    
 
ROMANO GARY
O
S
$23,927
16,306
---
3/3/25
---
$1.47
332,977
-4.7
D
R
3/5/25 - 4:05:05 pm
4
    
 
GRASSO MARC
CFO
S
$41,542
16,489
---
12/2/24
---
$2.52
330,651
-4.7
D
R
12/3/24 - 5:40:06 pm
5
    
 
ROSENTHAL ARNON
CEO,DIR
S
$131,442
52,172
---
12/2/24
---
$2.52
2,507,074
-2.0
D
R
12/3/24 - 5:40:05 pm
6
    
 
KENKARE MITRA SARA
PR
S
$66,764
26,500
---
12/2/24
---
$2.52
565,215
-4.5
D
R
12/3/24 - 5:40:03 pm
7
    
 
ROMANO GARY
O
S
$37,519
14,892
---
12/2/24
---
$2.52
349,283
-4.1
D
R
12/3/24 - 5:40:03 pm
8
    
 
GRASSO MARC
CFO
JB
---
216,400
---
10/1/24
---
---
347,140
165.5
D
R
10/2/24 - 4:05:45 pm
9
    
 
KENKARE MITRA SARA
PR
JB
---
300,000
---
10/1/24
---
---
591,715
102.8
D
R
10/2/24 - 4:05:07 pm
10
    
 
ROSENTHAL ARNON
CEO,DIR
JB
---
610,500
---
10/1/24
---
---
2,559,246
31.3
D
R
10/2/24 - 4:05:06 pm
11
    
 
ROMANO GARY
O
JB
---
184,380
---
10/1/24
---
---
364,175
102.6
D
R
10/2/24 - 4:05:03 pm
12
    
 
GRASSO MARC
CFO
S
$35,620
7,297
---
9/3/24
---
$4.88
130,740
-5.3
D
R
9/4/24 - 4:44:48 pm
13
    
 
ROSENTHAL ARNON
CEO,DIR
S
$129,387
26,499
---
9/3/24
---
$4.88
1,948,746
-1.3
D
R
9/4/24 - 4:15:30 pm
14
    
 
KENKARE MITRA SARA
PR
S
$67,981
13,926
---
9/3/24
---
$4.88
291,715
-4.6
D
R
9/4/24 - 4:15:27 pm
15
    
 
ROMANO GARY
O
S
$41,385
8,478
---
9/3/24
---
$4.88
179,795
-4.5
D
R
9/4/24 - 4:15:25 pm
16
1y
4
100%
-49%
8
SCHELLER RICHARD H
DIR
S
$228,388
44,250
---
8/22/24
---
$5.16
35,000
-55.8
D
---
8/23/24 - 4:05:04 pm
17
    
 
HAMMOND PAULA
DIR
AS
$53,179
10,500
---
8/12/24
---
$5.06
60,209
-14.8
D
10b
8/13/24 - 7:55:04 pm
18
    
 
YAFFE KRISTINE
DIR
AS
$25,309
5,000
---
8/12/24
---
$5.06
67,709
-6.9
D
10b
8/13/24 - 7:55:03 pm
19
    
 
SCHELLER RICHARD H
DIR
JB
---
15,833
---
8/2/24
---
---
50,833
45.2
D
R
10/10/24 - 4:05:06 pm
Subscribe Data Module Screens Alerts Newsletter Daily Ratings Reports Free Stuff
Home About FAQ Contact Disclaimer & Terms Of Use Privacy Transaction Codes
© 2026 InsiderInsights.com