Alector, Inc. (ALEC) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-09

Alector, Inc. (ALEC) has filed 13 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-09. 4 Form 8-K material event filings were reported by ALEC in the last 90 days. 4 Form 144 notices of proposed sale were filed for ALEC stock. InsiderAlpha tracks every ALEC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Alector, Inc. (ALEC)

SEC CIK0001653087

90-Day SEC Filing Activity

Form 4 filings (90d)13
Form 8-K filings (90d)4
Form 144 notices (90d)4
Latest Form 4 filing2026-07-09

Recent ALEC Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Wong-Sarad GracePrincipal Accounting OfficerA — Grant or award20.0K$0.00—SEC
SCHELLER RICHARD HInsiderA — Grant or award28.7K$0.00—SEC
LAVIGNE LOUIS J JRInsiderA — Grant or award28.7K$0.00—SEC
Hammond PaulaInsiderA — Grant or award28.7K$0.00—SEC
Yaffe KristineInsiderA — Grant or award28.7K$0.00—SEC
Altmeyer MarkInsiderA — Grant or award28.7K$0.00—SEC
GAROFALO ELIZABETH A.InsiderA — Grant or award28.7K$0.00—SEC
DESOUZA ERROL BInsiderA — Grant or award28.7K$0.00—SEC
Wong-Sarad GracePrincipal Accounting OfficerS — Open-market sale3.5K$1.88$7KSEC
Rosenthal ArnonChief Executive OfficerS — Open-market sale87.2K$1.97$172KSEC
Berkley Neil LindsayCFO & Chief Business OfficerS — Open-market sale19.4K$1.97$38KSEC
Wong-Sarad GracePrincipal Accounting OfficerS — Open-market sale5.7K$1.97$11KSEC
SCHELLER RICHARD HInsiderA — Grant or award10.8K$0.00—SEC
Wong-Sarad GracePrincipal Accounting OfficerS — Open-market sale1.8K$2.65$5KSEC
Berkley Neil LindsayCFO & Chief Business OfficerA — Grant or award54.6K$0.00—SEC

All transactions sourced from SEC EDGAR Form 4 filings for Alector, Inc. (ALEC). Updated in real time as new filings are submitted to the SEC.

Most-Active ALEC Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
Wong-Sarad Grace4$23K
SCHELLER RICHARD H3—
Altmeyer Mark2—
Yaffe Kristine2—
GAROFALO ELIZABETH A.2—

Recent ALEC Form 8-K Material Events

Recent ALEC Form 144 Notices of Proposed Sale

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ALEC insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

ALEC Insider Trading — FAQ

What is the latest insider trade for ALEC?
Alector, Inc. (ALEC) had 13 insider filings in the last 90 days, with the most recent on 2026-07-09. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ALEC stock?
0 insider purchases of ALEC were filed in the last 90 days.
How many insiders are selling ALEC stock?
0 insider sales of ALEC were filed in the last 90 days.
Where can I see ALEC SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every ALEC SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live ALEC dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.