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Alector, Inc. (ALEC)

Alector, Inc. (ALEC) Insider Trading

Directors, officers and holders of more than 10% of ALEC report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 127 transactions on file: 0 with code P, 5 with code S and 45 with other codes.

DateInsiderCodeShares
Oct 14, 2026Wong-Sarad GraceA Award83,435
Oct 14, 2026Berkley Neil LindsayA Award44,567
Oct 14, 2026Berkley Neil LindsayA Award190,000
Oct 14, 2026Rosenthal ArnonA Award217,500
Oct 14, 2026Wong-Sarad GraceA Award55,555
Oct 14, 2026Rosenthal ArnonA Award978,750
Oct 13, 2026Wong-Sarad GraceA Award10,228
Oct 13, 2026Wong-Sarad GraceD Disposition11,552
Oct 13, 2026Wong-Sarad GraceD Disposition20,454
Oct 13, 2026Rosenthal ArnonD Disposition520,000
Oct 13, 2026Wong-Sarad GraceD Disposition13,842
Oct 13, 2026Wong-Sarad GraceA Award20,000
Oct 13, 2026Wong-Sarad GraceA Award20,454
Oct 13, 2026Wong-Sarad GraceD Disposition10,228
Oct 13, 2026Rosenthal ArnonA Award500,000
Oct 13, 2026Rosenthal ArnonD Disposition119,446
Oct 13, 2026Wong-Sarad GraceD Disposition11,309
Oct 13, 2026Rosenthal ArnonA Award417,213
Oct 13, 2026Wong-Sarad GraceA Award11,309
Oct 13, 2026Rosenthal ArnonA Award119,446
Oct 13, 2026Rosenthal ArnonA Award132,500
Oct 13, 2026Rosenthal ArnonD Disposition457,038
Oct 13, 2026Rosenthal ArnonD Disposition275,000
Oct 13, 2026Wong-Sarad GraceA Award11,552
Oct 13, 2026Rosenthal ArnonA Award275,000
Oct 13, 2026Wong-Sarad GraceD Disposition20,000
Oct 13, 2026Rosenthal ArnonD Disposition417,213
Oct 13, 2026Wong-Sarad GraceA Award13,842
Oct 13, 2026Rosenthal ArnonA Award457,038
Oct 13, 2026Rosenthal ArnonD Disposition132,500
Oct 13, 2026Rosenthal ArnonD Disposition500,000
Oct 13, 2026Rosenthal ArnonA Award520,000
Sep 4, 2026Wong-Sarad GraceS Sale3,625
Sep 3, 2026Wong-Sarad GraceS Sale5,165
Sep 3, 2026Berkley Neil LindsayS Sale29,251
Sep 3, 2026Rosenthal ArnonS Sale72,606
Sep 2, 2026Wong-Sarad GraceS Sale656
Aug 19, 2026Rosenthal ArnonG Gift350,000
Aug 19, 2026Rosenthal ArnonG Gift350,000
Aug 19, 2026Rosenthal ArnonG Gift1,050,000
Aug 19, 2026Rosenthal ArnonG Gift350,000
Jul 9, 2026Wong-Sarad GraceA Award20,000
Jun 17, 2026LAVIGNE LOUIS J JRA Award28,700
Jun 17, 2026DESOUZA ERROL BA Award28,700
Jun 17, 2026Altmeyer MarkA Award28,700
Jun 17, 2026GAROFALO ELIZABETH A.A Award28,700
Jun 17, 2026Hammond PaulaA Award28,700
Jun 17, 2026SCHELLER RICHARD HA Award28,700
Jun 17, 2026Yaffe KristineA Award28,700
Jun 17, 2026Yaffe KristineA Award9,450

The full Form 4 history is on the ALEC company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.