InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (7 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
7
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Discover the detailed record of transactions filed by Schleifer Leonard S, Chairman & CEO. Director active across 1 company, notably Regeneron Pharmaceuticals, INC.. Aggregated, 14 filings have been recorded. Breakdown: 0 buy · 7 sells. Total volume traded: €144m. History available since 6 August 2021. The latest transaction was filed on 31 December 2025 (Levée d'options). Regulator: SEC (Form 4). All data is openly available.
Companies and markets linked to Schleifer Leonard S
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations14 total
28,570 shares0Common StockSEC:0001218629-26-000002:0
172,723 shares@ US$555.6722.3% of flowCommon StockSEC:0001218629-25-000006:0
7,321 shares@ US$1,015.281.5% of flowCommon StockSEC:0001104659-24-071247:0
787 shares@ US$1,015.020.2% of flowCommon StockSEC:0001883850-24-000029:0
22,687 shares@ US$979.224.4% of flowCommon StockSEC:0001883850-24-000025:0
203,204 shares@ US$399.6616.2% of flowCommon StockSEC:0001883850-24-000022:0
25,155 sharesCommon StockSEC:0001883850-23-000094:0
53,807 shares0Common StockSEC:0001883850-23-000069:0
4,461 shares@ US$710.050.8% of flowCommon StockSEC:0001883850-22-000038:0
2,886 shares@ US$710.010.5% of flowCommon StockSEC:0001883850-22-000036:0
239,063 shares@ US$270.4315.4% of flowCommon StockSEC:0001883850-21-000009:0
200,000 shares@ US$650.0330.1% of flowCommon StockSEC:0001708138-21-000064:0
171 shares@ US$615.540.0% of flowCommon StockSEC:0001708138-21-000058:0
240,000 shares@ US$52.032.9% of flowCommon StockSEC:0001708138-21-000048:0
14 of 14 declarations
About Schleifer Leonard S
SCHLEIFER LEONARD S is Président-Directeur Général and is linked to Regeneron Pharmaceuticals, INC., where he is Bd. Co-Chair, President & CEO. He has 14 filings in total, and in the sampled recent filings from 2021-08-10 to 2026-01-05, the most frequent transaction nature is Cession, with 0 in buys and 144024599 in sells.
