ALEC
Alector, Inc.$2.39+0.04 (+1.70%)Prev Close$2.35·MCap$259.4M·P/E—·Vol209.6K·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
20
$891.8K
◆
Net Activity
Net Seller
$891.8K
●
Active Insiders
7
last 12 mo
Over the past 12 months, insider activity at Alector, Inc. (ALEC) has been exclusively selling, with 0 insider purchases totaling $0.00 and 20 insider sales totaling $891.8K. The most recent insider transaction was by Wong-Sarad Grace (officer: Principal Accounting Officer), who sold $4.8K worth of shares on Apr 17, 2026. Alector, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $259.4M.
ALEC Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 17, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 1,820 | $2.65 | $4.8K | 104,645 |
| Mar 12, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 1,000 | $2.65 | $2.6K | 106,465 |
| Mar 3, 2026 | Berkley Neil Lindsay | officer: CFO & Chief Business Officer | Sell | 29,649 | $2.12 | $63.0K | 344,660 |
| Mar 3, 2026 | Rosenthal Arnon | director, officer: Chief Executive Officer | Sell | 81,864 | $2.12 | $173.8K | 2,338,176 |
| Mar 3, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 8,071 | $2.12 | $17.1K | 110,832 |
| Feb 26, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 4,079 | $2.50 | $10.2K | 118,903 |
| Dec 5, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell | 4,753 | $1.21 | $5.8K | 0 |
| Dec 3, 2025 | Berkley Neil Lindsay | Chief Bus Ofcr & Interim CFO | Sell | 37,261 | $1.12 | $41.7K | 0 |
| Dec 3, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 41,687 | $1.12 | $46.7K | 0 |
| Dec 3, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 104,347 | $1.12 | $116.8K | 0 |
| Dec 3, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell | 8,056 | $1.12 | $9.0K | 0 |
| Sep 2, 2025 | Berkley Neil Lindsay | Principal Financial Officer | Sell | 15,842 | $2.50 | $39.6K | 0 |
| Sep 2, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 23,638 | $2.50 | $59.0K | 0 |
| Sep 2, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 51,562 | $2.50 | $128.7K | 0 |
| Sep 2, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell | 5,910 | $2.50 | $14.8K | 0 |
| Aug 26, 2025 | Hammond Paula | Director | Sell | 14,000 | $2.36 | $33.0K | 0 |
| Jun 20, 2025 | Yaffe Kristine | Director | Sell | 1,000 | $1.44 | $1.4K | 0 |
| Jun 2, 2025 | GRASSO MARC | Chief Financial Officer | Sell | 16,488 | $1.34 | $22.1K | 0 |
| Jun 2, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 23,890 | $1.34 | $32.0K | 0 |
| Jun 2, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 52,087 | $1.34 | $69.7K | 0 |
| Mar 3, 2025 | GRASSO MARC | Chief Financial Officer | Sell | 18,091 | $1.47 | $26.5K | 0 |
| Mar 3, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 29,073 | $1.47 | $42.7K | 0 |
| Mar 3, 2025 | Romano Gary | Chief Medical Officer | Sell | 16,306 | $1.47 | $23.9K | 0 |
| Mar 3, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 40,330 | $1.47 | $59.2K | 0 |
| Dec 2, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 16,489 | $2.52 | $41.5K | 0 |
| Dec 2, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 26,500 | $2.52 | $66.8K | 0 |
| Dec 2, 2024 | Romano Gary | Chief Medical Officer | Sell | 14,892 | $2.52 | $37.5K | 0 |
| Dec 2, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 52,172 | $2.52 | $131.4K | 0 |
| Sep 3, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 7,297 | $4.88 | $35.6K | 0 |
| Sep 3, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 13,926 | $4.88 | $68.0K | 0 |
| Sep 3, 2024 | Romano Gary | Chief Medical Officer | Sell | 8,478 | $4.88 | $41.4K | 0 |
| Sep 3, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 26,499 | $4.88 | $129.4K | 0 |
| Aug 22, 2024 | SCHELLER RICHARD H | Director | Sell | 44,250 | $5.16 | $228.4K | 0 |
| Aug 12, 2024 | Hammond Paula | Director | Sell | 10,500 | $5.06 | $53.2K | 0 |
| Aug 12, 2024 | Yaffe Kristine | Director | Sell | 5,000 | $5.06 | $25.3K | 0 |
| Jun 3, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 6,920 | $4.80 | $33.2K | 0 |
| Jun 3, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 13,206 | $4.80 | $63.4K | 0 |
| Jun 3, 2024 | Romano Gary | Chief Medical Officer | Sell | 8,040 | $4.80 | $38.6K | 0 |
| Jun 3, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 25,135 | $4.80 | $120.6K | 0 |
| Mar 4, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 5,716 | $6.92 | $39.6K | 0 |
| Mar 4, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 10,169 | $6.92 | $70.4K | 0 |
| Mar 4, 2024 | Romano Gary | Chief Medical Officer | Sell | 6,001 | $6.92 | $41.6K | 0 |
| Mar 4, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 18,837 | $6.92 | $130.4K | 0 |
| Dec 4, 2023 | GRASSO MARC | Chief Financial Officer | Sell | 4,574 | $5.56 | $25.4K | 0 |
| Dec 4, 2023 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 12,519 | $5.56 | $69.6K | 0 |
| Dec 4, 2023 | Romano Gary | Chief Medical Officer | Sell | 5,035 | $5.56 | $28.0K | 0 |
| Dec 4, 2023 | Rosenthal Arnon | Chief Executive Officer | Sell | 23,831 | $5.56 | $132.5K | 0 |
| Sep 11, 2023 | MCGUIRE TERRANCE | Director | Sell | 500,000 | $6.00 | $3.00M | 0 |
| Sep 5, 2023 | GRASSO MARC | Chief Financial Officer | Sell | 1,114 | $5.19 | $5.8K | 0 |
| Sep 5, 2023 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 6,214 | $5.19 | $32.3K | 0 |
Showing 1–50 of 87
1 / 2
ALEC Insider Buying Activity
The following table shows recent insider purchases of Alector, Inc. (ALEC) stock reported via SEC Form 4 filings.
No insider buying activity found for ALEC in the last 12 months.
ALEC Insider Selling Activity
The following table shows recent insider sales of Alector, Inc. (ALEC) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 17, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 1,820 | $2.65 | $4.8K | 104,645 |
| Mar 12, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 1,000 | $2.65 | $2.6K | 106,465 |
| Mar 3, 2026 | Berkley Neil Lindsay | officer: CFO & Chief Business Officer | Sell | 29,649 | $2.12 | $63.0K | 344,660 |
| Mar 3, 2026 | Rosenthal Arnon | director, officer: Chief Executive Officer | Sell | 81,864 | $2.12 | $173.8K | 2,338,176 |
| Mar 3, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 8,071 | $2.12 | $17.1K | 110,832 |
| Feb 26, 2026 | Wong-Sarad Grace | officer: Principal Accounting Officer | Sell | 4,079 | $2.50 | $10.2K | 118,903 |
| Dec 5, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell | 4,753 | $1.21 | $5.8K | 0 |
| Dec 3, 2025 | Berkley Neil Lindsay | Chief Bus Ofcr & Interim CFO | Sell | 37,261 | $1.12 | $41.7K | 0 |
| Dec 3, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 41,687 | $1.12 | $46.7K | 0 |
| Dec 3, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 104,347 | $1.12 | $116.8K | 0 |
| Dec 3, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell | 8,056 | $1.12 | $9.0K | 0 |
| Sep 2, 2025 | Berkley Neil Lindsay | Principal Financial Officer | Sell | 15,842 | $2.50 | $39.6K | 0 |
| Sep 2, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 23,638 | $2.50 | $59.0K | 0 |
| Sep 2, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 51,562 | $2.50 | $128.7K | 0 |
| Sep 2, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell | 5,910 | $2.50 | $14.8K | 0 |
| Aug 26, 2025 | Hammond Paula | Director | Sell | 14,000 | $2.36 | $33.0K | 0 |
| Jun 20, 2025 | Yaffe Kristine | Director | Sell | 1,000 | $1.44 | $1.4K | 0 |
| Jun 2, 2025 | GRASSO MARC | Chief Financial Officer | Sell | 16,488 | $1.34 | $22.1K | 0 |
| Jun 2, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 23,890 | $1.34 | $32.0K | 0 |
| Jun 2, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 52,087 | $1.34 | $69.7K | 0 |
| Mar 3, 2025 | GRASSO MARC | Chief Financial Officer | Sell | 18,091 | $1.47 | $26.5K | 0 |
| Mar 3, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 29,073 | $1.47 | $42.7K | 0 |
| Mar 3, 2025 | Romano Gary | Chief Medical Officer | Sell | 16,306 | $1.47 | $23.9K | 0 |
| Mar 3, 2025 | Rosenthal Arnon | Chief Executive Officer | Sell | 40,330 | $1.47 | $59.2K | 0 |
| Dec 2, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 16,489 | $2.52 | $41.5K | 0 |
| Dec 2, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 26,500 | $2.52 | $66.8K | 0 |
| Dec 2, 2024 | Romano Gary | Chief Medical Officer | Sell | 14,892 | $2.52 | $37.5K | 0 |
| Dec 2, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 52,172 | $2.52 | $131.4K | 0 |
| Sep 3, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 7,297 | $4.88 | $35.6K | 0 |
| Sep 3, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 13,926 | $4.88 | $68.0K | 0 |
| Sep 3, 2024 | Romano Gary | Chief Medical Officer | Sell | 8,478 | $4.88 | $41.4K | 0 |
| Sep 3, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 26,499 | $4.88 | $129.4K | 0 |
| Aug 22, 2024 | SCHELLER RICHARD H | Director | Sell | 44,250 | $5.16 | $228.4K | 0 |
| Aug 12, 2024 | Hammond Paula | Director | Sell | 10,500 | $5.06 | $53.2K | 0 |
| Aug 12, 2024 | Yaffe Kristine | Director | Sell | 5,000 | $5.06 | $25.3K | 0 |
| Jun 3, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 6,920 | $4.80 | $33.2K | 0 |
| Jun 3, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 13,206 | $4.80 | $63.4K | 0 |
| Jun 3, 2024 | Romano Gary | Chief Medical Officer | Sell | 8,040 | $4.80 | $38.6K | 0 |
| Jun 3, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 25,135 | $4.80 | $120.6K | 0 |
| Mar 4, 2024 | GRASSO MARC | Chief Financial Officer | Sell | 5,716 | $6.92 | $39.6K | 0 |
| Mar 4, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 10,169 | $6.92 | $70.4K | 0 |
| Mar 4, 2024 | Romano Gary | Chief Medical Officer | Sell | 6,001 | $6.92 | $41.6K | 0 |
| Mar 4, 2024 | Rosenthal Arnon | Chief Executive Officer | Sell | 18,837 | $6.92 | $130.4K | 0 |
| Dec 4, 2023 | GRASSO MARC | Chief Financial Officer | Sell | 4,574 | $5.56 | $25.4K | 0 |
| Dec 4, 2023 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 12,519 | $5.56 | $69.6K | 0 |
| Dec 4, 2023 | Romano Gary | Chief Medical Officer | Sell | 5,035 | $5.56 | $28.0K | 0 |
| Dec 4, 2023 | Rosenthal Arnon | Chief Executive Officer | Sell | 23,831 | $5.56 | $132.5K | 0 |
| Sep 11, 2023 | MCGUIRE TERRANCE | Director | Sell | 500,000 | $6.00 | $3.00M | 0 |
| Sep 5, 2023 | GRASSO MARC | Chief Financial Officer | Sell | 1,114 | $5.19 | $5.8K | 0 |
| Sep 5, 2023 | Kenkare-Mitra Sara | President and Head of R&D | Sell | 6,214 | $5.19 | $32.3K | 0 |
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