Alector, Inc.

ALEC Net selling

CIK 0001653087 #3740 in the set updated 17 Sep 2026

Bought (120 mo)

$16.14M

out of their own pocket, the only kind of buying there is

Sold (120 mo)

$180.85M

$137.61K on a plan · $27.89M straight out of an exercise

Sold at will

$152.82M

178 of 247 sales

Net

−$164.70M

−$136.67M against sales at will

By person

24 insiders · 255 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

ORBIMED ADVISORS LLC entity

10% owner

$7.82M (3)

$116.23M (41)

−$108.41M

1,906,718

1.71%

$4.78M

—

Rosenthal Arnon

Chief Executive Officer

—

$22.48M (41)

−$22.48M

4,299,600

3.85%

$10.79M

+8.0%

Paul Robert

Chief Medical Officer

—

$13.17M (58) scheduled

−$13.17M

234,319

0.2099%

$587.86K

−30.2%

GORDON CARL L

Director

$7.82M (3)

—

+$7.82M

203,200

0.1820%

$509.79K

—

Yu Calvin

Vice President, Finance

—

$6.69M (10) scheduled

−$6.69M

76,686

0.0687%

$192.39K

−57.3%

SULIMAN SHEHNAAZ

President and COO

—

$6.65M (8) scheduled

−$6.65M

102,598

0.0919%

$257.40K

+3,849%

King Robert

Chief Development Officer

—

$3.29M (14) scheduled

−$3.29M

550,871

0.4934%

$1.38M

+2.5%

MCGUIRE TERRANCE

Director

—

$3.14M (2)

−$3.14M

36,620,824

32.80%

$91.87M

+42.6%

Polaris Venture Management Co. VI, L.L.C. entity

10% owner

—

$3.14M (2)

−$3.14M

35,565,828

31.85%

$89.23M

+38.3%

SCHELLER RICHARD H

Director

—

$2.39M (5) scheduled

−$2.39M

134,899

0.1208%

$338.43K

+575.1%

Oney Sabah

Chief Business Officer

—

$1.95M (11) scheduled

−$1.95M

573,918

0.5140%

$1.44M

−3.4%

Kenkare-Mitra Sara

President and Head of R&D

—

$663.18K (12)

−$663.18K

501,652

0.4493%

$1.26M

—

Wehner David M.

Director

$500.00K (1)

—

+$500.00K

115,330

0.1033%

$289.34K

—

Romano Gary

Chief Medical Officer

—

$312.15K (11)

−$312.15K

332,977

0.2982%

$835.37K

—

Berkley Neil Lindsay

CFO & Chief Business Officer

—

$260.39K (5)

−$260.39K

350,649

0.3140%

$879.71K

−3.2%

GRASSO MARC

Chief Financial Officer

—

$247.75K (10)

−$247.75K

296,072

0.2652%

$742.79K

—

Wong-Sarad Grace

Principal Accounting Officer

—

$113.83K (13)

−$113.83K

106,015

0.0949%

$265.97K

−3.1%

Hammond Paula

Director

—

$86.18K (2) scheduled

−$86.18K

103,609

0.0928%

$259.93K

—

Yaffe Kristine

Director

—

$26.75K (2) scheduled

−$26.75K

124,109

0.1112%

$311.36K

—

Gerngross Tillman U.

Director

—

—

—

2,644,319

2.37%

$6.63M

+21.2%

LAVIGNE LOUIS J JR

Director

—

—

—

138,661

0.1242%

$347.87K

—

GAROFALO ELIZABETH A.

Director

—

—

—

118,650

0.1063%

$297.67K

—

DESOUZA ERROL B

Director

—

—

—

98,650

0.0884%

$247.49K

—

Altmeyer Mark

Director

—

—

—

98,650

0.0884%

$247.49K

—

Individual transactions

1

Insider

Date

Role

Action

Shares

Price

Amount

Yaffe Kristine

10 Sep 2021

Director

Exercised, kept

2,000

$18.10

$36.20K

Showing 250 of 255 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 271

Amendments (4/A) skipped 2

Filings about a different issuer 0

Unreadable filings 0

Joint filings 18

Sales on a Rule 10b5-1 plan 8

Sales straight out of an exercise 61

Sales at will 178

Transactions with no price 0

Shares from compensation/vesting 65,005,269

Sales filed before the plan box existed 118

History held since 11 Feb 2019