Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
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StockCIK 1653087

Alector, Inc. (ALEC): Insider Trades and Fund Holdings

In the past 12 months, Alector, Inc. insiders reported 0 open-market purchases worth $0 and 5 sales worth $296K; 0 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months
$0Bought by insiders, 12 months
$296KSold by insiders, 12 months
1Tracked funds holding

Timeline: news and trades

Company filings (8-K), insider trades, notices of planned sales (Form 144) and fund moves in the past year, newest first.

  1. Oct 16, 2026NewsCompany reported: Signed a material agreement
  2. Oct 14, 2026NewsCompany reported: Executive or director change
  3. Oct 5, 2026NewsCompany reported: Signed a material agreement; Quarterly or annual results
  4. Sep 4, 2026Insider salePrincipal Accounting Officer Grace Wong-Sarad sold $9,094
  5. Sep 3, 2026Insider saleCEO Arnon Rosenthal sold $193,473
  6. Sep 3, 2026Insider saleCFO Neil Lindsay Berkley sold $77,948
  7. Sep 3, 2026Insider salePrincipal Accounting Officer Grace Wong-Sarad sold $13,767
  8. Sep 2, 2026Insider salePrincipal Accounting Officer Grace Wong-Sarad sold $1,804
  9. Jun 30, 2026FundRenaissance Technologies cut 27% in Q2 2026 (13F filed Aug 13, 2026)

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Sep 4, 2026.

Recent ALEC insider trades
FiledTradedInsiderRoleTypeSharesPrice ($)ValueHoldingFiling
Sep 4Sep 3Arnon RosenthalCEOCEO▼ SELL72,6062.66$193K−3.1%Form 4 ↗
Sep 4Sep 3Neil Lindsay BerkleyCFOCFO▼ SELL29,2512.66$78K−7.7%Form 4 ↗
Sep 4Sep 3Grace Wong-SaradPrincipal Accounting OfficerPrincipal Accounting Officer▼ SELL5,1652.67$14K−4.5%Form 4 ↗
Sep 4Sep 4Grace Wong-SaradPrincipal Accounting OfficerPrincipal Accounting Officer▼ SELL3,6252.51$9K−3.3%Form 4 ↗
Sep 4Sep 2Grace Wong-SaradPrincipal Accounting OfficerPrincipal Accounting Officer▼ SELL6562.75$2K−0.6%Form 4 ↗
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

InsiderRoleBuysBoughtSellsSoldLatest
Arnon RosenthalCEO0$01$193KSep 4, 2026
Neil Lindsay BerkleyCFO0$01$78KSep 4, 2026
Grace Wong-SaradPrincipal Accounting Officer0$03$25KSep 4, 2026

Buybacks and executive pay

YearCEO pay reportedCEO pay "actually paid"Value of $100 invested
2025$2.00M$1.86Mn/a
2024$3.67M−$1.85Mn/a
2023$4.26M$3.23Mn/a

From the company's XBRL data filed with the SEC. "Actually paid" is the SEC's pay-versus-performance measure, which counts changes in the value of stock awards. "Value of $100 invested" is the company's cumulative shareholder return as reported, usually measured from five years earlier. See all buybacks and CEO pay across companies.

Tracked funds that report ALEC

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

FundQuarterSharesValue% of portfolioChange
Renaissance TechnologiesQ2 2026935,166$1.88M0.00%▼ −27.4%
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →