InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (21 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
21
T+90 hit rate
100%
T+90 mean return
+66.6%
Across 2 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Discover the complete record of transactions filed by Rosenthal Arnon, Chairman & CEO. Insider active across 1 company, notably Alector, Inc.. Cumulatively, 28 filings have been published. Breakdown: 0 buy · 21 sells. Total volume traded: €16.2m. History available since 7 May 2021. The latest transaction was disclosed on 2 June 2026 (Cession). Regulator: SEC (Form 4). All data is free.
Declarations28 total
87,216 shares@ US$1.97430.062% mcap0.9% of flowCommon StockSEC:0001193125-26-255816:0
137,125 shares0Common StockSEC:0000950170-25-092312:0
40,330 shares@ US$1.46730.3% of flowCommon StockSEC:0000950170-25-033530:0
52,172 shares@ US$2.51940.8% of flowCommon StockSEC:0000950170-24-132912:0
610,500 shares0Common StockSEC:0000950170-24-111421:0
26,499 shares@ US$4.88270.7% of flowCommon StockSEC:0000950170-24-103408:0
25,135 shares@ US$4.79880.7% of flowCommon StockSEC:0000950170-24-068941:0
18,837 shares@ US$6.92180.7% of flowCommon StockSEC:0000950170-24-026424:0
23,831 shares@ US$5.560.7% of flowCommon StockSEC:0000950170-23-068619:0
397,600 shares0Common StockSEC:0000950170-23-051702:0
5,647 shares@ US$5.19450.2% of flowCommon StockSEC:0000950170-23-046836:0
5,255 shares@ US$6.90370.2% of flowCommon StockSEC:0000950170-23-026473:0
42,990 shares0Common StockSEC:0001209191-23-020421:0
15,186 shares@ US$6.21810.5% of flowCommon StockSEC:0001209191-23-020421:1
5,849 shares@ US$8.31780.3% of flowCommon StockSEC:0001209191-23-016080:0
179,169 shares0Common StockSEC:0001209191-22-052530:0
55,000 shares@ US$25.000.49% mcap7.8% of flowCommon StockSEC:0001209191-21-064341:0
55,000 shares@ US$25.000.49% mcap15.5% of flowCommon StockSEC:0001209191-21-064341
55,000 shares@ US$25.000.50% mcap15.6% of flowCommon StockSEC:0001209191-21-063971
55,000 shares@ US$25.000.50% mcap7.8% of flowCommon StockSEC:0001209191-21-063971:0
55,000 shares@ US$25.000.49% mcap7.8% of flowCommon StockSEC:0001209191-21-063451:0
55,000 shares@ US$25.000.49% mcap15.5% of flowCommon StockSEC:0001209191-21-063451
94,717 shares@ US$25.2890.85% mcap13.4% of flowCommon StockSEC:0001209191-21-057519:0
94,717 shares@ US$25.28912.6% of flowCommon StockSEC:0001209191-21-057519
91,954 shares@ US$25.75790.84% mcap13.2% of flowCommon StockSEC:0001209191-21-057273:0
25 of 28 declarations
About Rosenthal Arnon
Arnon Rosenthal serves as Chief Executive Officer of Alector, Inc. In this role, he leads the company by setting the strategic vision and overseeing daily operations. Arnon has extensive experience in the biopharmaceutical sector, contributing to innovation and growth within the organization.
