$ALEC insider trading
Over the last 12 months, Alector insiders reported no purchases and 19 sales totaling $1.0M across SEC Form 4 filings. 37% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $1.0M 19 events
- Events · 12m
- 19 Form 4 filings, grouped
- Insiders · 12m
- 4 distinct reporters
- 10b5-1 share
- 37% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Sep 4, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 9,446 | $2.61 | $25K | -8.2% | plan · 3 tranches |
| Sep 3, 2026 | Berkley Neil LindsayCFO & Chief Business Officer · O | ▼ Sale | 29,251 | $2.66 | $78K | -7.7% | — |
| Sep 3, 2026 | Rosenthal ArnonChief Executive Officer · O·D | ▼ Sale | 72,606 | $2.66 | $193K | -3.1% | — |
| Jun 3, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 3,475 | $1.88 | $7K | -3.5% | plan |
| Jun 2, 2026 | Rosenthal ArnonChief Executive Officer · O·D | ▼ Sale | 87,216 | $1.97 | $172K | -3.6% | — |
| Jun 2, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 5,709 | $1.97 | $11K | -5.5% | — |
| Jun 2, 2026 | Berkley Neil LindsayCFO & Chief Business Officer · O | ▼ Sale | 19,360 | $1.97 | $38K | -4.8% | — |
| Apr 16, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 1,820 | $2.65 | $5K | -1.7% | plan |
| Mar 10, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 1,000 | $2.65 | $3K | -0.9% | plan |
| Mar 3, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 3,367 | $2.08 | $7K | -3% | plan |
| Mar 2, 2026 | Berkley Neil LindsayCFO & Chief Business Officer · O | ▼ Sale | 29,649 | $2.12 | $63K | -7.9% | — |
| Mar 2, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 8,071 | $2.12 | $17K | -6.8% | — |
| Mar 2, 2026 | Rosenthal ArnonChief Executive Officer · O·D | ▼ Sale | 81,864 | $2.12 | $174K | -3.4% | — |
| Feb 26, 2026 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 4,079 | $2.5 | $10K | -3.3% | plan |
| Dec 5, 2025 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 4,753 | $1.21 | $6K | -3.7% | plan |
| Dec 3, 2025 | Berkley Neil LindsayChief Bus Ofcr & Interim CFO · O | ▼ Sale | 37,261 | $1.12 | $42K | -9.1% | — |
| Dec 3, 2025 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 8,056 | $1.12 | $9K | -5.9% | — |
| Dec 3, 2025 | Kenkare-Mitra SaraPresident and Head of R&D · O | ▼ Sale | 41,687 | $1.12 | $47K | -7.7% | — |
| Dec 3, 2025 | Rosenthal ArnonChief Executive Officer · O·D | ▼ Sale | 104,347 | $1.12 | $117K | -4.1% | — |
| Sep 2, 2025 | Wong-Sarad GracePrincipal Accounting Officer · O | ▼ Sale | 5,910 | $2.5 | $15K | -5.4% | — |
| Sep 2, 2025 | Berkley Neil LindsayPrincipal Financial Officer · O | ▼ Sale | 15,842 | $2.5 | $40K | -4.4% | — |
| Sep 2, 2025 | Kenkare-Mitra SaraPresident and Head of R&D · O | ▼ Sale | 23,638 | $2.5 | $59K | -4.2% | — |
| Sep 2, 2025 | Rosenthal ArnonChief Executive Officer · O·D | ▼ Sale | 51,562 | $2.5 | $129K | -2.1% | — |
| Aug 26, 2025 | Hammond PaulaD | ▼ Sale | 14,000 | $2.36 | $33K | -15.7% | plan |
Every $ALEC filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Alector filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $ALEC feed.