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Companies
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Latest filing published 17 Jun 2026 for Alector, Inc..
Insider track record
Disclosed buys
0
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
No signal scores available.
Errol B. Desouza: trading record in brief
Errol B. Desouza (board member) discloses dealings in 4 companies, chiefly Gyre Therapeutics, Inc., Royalty Pharma plc and Alector, Inc. The record holds 24 filings, for trades running from 31 December 2018 to 17 June 2026.
None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Because grants and exercises are largely decided by remuneration plans, they are not counted as purchases here.
The record was last updated on 17 June 2026 with a share grant in Alector, Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. The legal deadline for a Form 4 is two business days after the transaction. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Companies and markets linked to Errol B. Desouza
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations11 total
28,700 sharesCommon StockSEC:0001193125-26-274123:0
28,700 shares0Common StockSEC:0000950170-25-085615:0
7,614 shares0Class A Ordinary SharesSEC:0001802768-25-000049:0
9,293 shares0Class A Ordinary SharesSEC:0001802768-24-000027:0
41,250 shares0Common StockSEC:0000950170-24-034848:0
20,000 shares0Common StockSEC:0000950170-23-067736:0
7,747 shares0Class A Ordinary SharesSEC:0001209191-23-039672:0
6,328 shares0Class A Ordinary SharesSEC:0000899243-22-024038:0
3,588 shares0Common StockSEC:0001209191-21-059424:0
3,406 shares0Common StockSEC:0001209191-21-044688:0
5,726 shares0Class A Ordinary SharesSEC:0000950103-21-009693:0
11 of 11 declarations
