ROSENTHAL ARNON

PrivateCIK: 1757770
Location

SOUTH SAN FRANCISCO, CA

ROSENTHAL ARNON (Chief Executive Officer) sold 3.1% of their position (72.61K shares) of ALECTOR, INC. on the open market

Open‑market sale worth $193.5K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderROSENTHAL ARNONCIK 1757770
IssuerALECTOR, INC.CIK 1653087
DirectorOfficer· Chief Executive Officer
Since Feb 2019
-72.61K
Net shares
Net seller
$193.5K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
72.61K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

72.61K

Price / share

$2.66

Trade value

$193.47K

% of position

3.1%
9/3/2026
2.37M2.29M
Total

Net shares

72.61K

Net value

-$193.47K

Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)4

Common Stock

Indirect
Shares owned1M

Common Stock

Indirect
Shares owned1M

Common Stock

Indirect
Shares owned922.88K

Common Stock

Indirect
Shares owned1M
Total
3.93M indirect3.93M
Derivative Holdings (Post-Transaction)0
No derivative holdings reported