ALEC
insider transactionsAlector, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 30d
-115.8K
0 buy · 115.8K sell
Net value · 30d
-$228.2K
$0 in · $228.2K out
Sentiment · 30d
Net selling
0% buying · 100% selling
Open-market trades · 30d
4
0 buy · 115.8K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +30%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +32%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +38%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +27%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +41%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +41%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Grant·A
Director
$0
28.7K sh
Own +29%
-
Sell·S
Principal Accounting Officer
$6.5K
3.5K sh · $1.88
Own -4%
-
Sell·S
Arnon Rosenthal KEY
Chief Executive Officer
$172.2K
87.2K sh · $1.97
Own -4%
-
Sell·S
Principal Accounting Officer
$11.3K
5.7K sh · $1.97
Own -5%
-
Sell·S
CFO & Chief Business Officer
$38.2K
19.4K sh · $1.97
Own -5%
-
Grant·A
Director
$0
10.8K sh
Own +11%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 17, 2026 | Kristine Yaffe | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Kristine Yaffe | Grant A | 28.7K | $0 |
| Jun 17, 2026 | Elizabeth A. Garofalo | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Elizabeth A. Garofalo | Grant A | 28.7K | $0 |
| Jun 17, 2026 | Paula Hammond | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Paula Hammond | Grant A | 28.7K | $0 |
| Jun 17, 2026 | Richard H Scheller | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Richard H Scheller | Grant A | 28.7K | $0 |
| Jun 17, 2026 | Mark Altmeyer | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Mark Altmeyer | Grant A | 28.7K | $0 |
| Jun 17, 2026 | Errol B Desouza | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Errol B Desouza | Grant A | 28.7K | $0 |
| Jun 17, 2026 | Louis J Lavigne JR | Grant A | 9.4K | $0 |
| Jun 17, 2026 | Louis J Lavigne JR | Grant A | 28.7K | $0 |
| Jun 3, 2026 | Grace Wong-Sarad | Sell S | 3.5K | $6.5K |
| Jun 2, 2026 | Arnon Rosenthal KEY | Sell S | 87.2K | $172.2K |
| Jun 2, 2026 | Grace Wong-Sarad | Sell S | 5.7K | $11.3K |
| Jun 2, 2026 | Neil Lindsay Berkley KEY | Sell S | 19.4K | $38.2K |
| Jun 1, 2026 | Richard H Scheller | Grant A | 10.8K | $0 |
About ALEC insider trading
This page tracks insider transactions for Alector, Inc. (ALEC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.