LEONARD S SCHLEIFER
CIK 1218629 · Bd. Co-Chair, President & CEO · last filed 2026-01-05
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$257.40M
Companies
1
Total Filings
53
Lifetime Open-Market Net
-$458.80M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| REGN | Bd. Co-Chair, President & CEO | 370,577 | $694.59 | $257.40M | -$458.80M | 50 | 2026-01-05 |
Recent Filings · Page 2 of 6
53 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-05-17 | REGN | Gift (G) | — | $0 | EDGAR |
| 2022-04-07 | REGN | Sell (S) | −7,114 | -$5.05M | EDGAR |
| 2022-04-04 | REGN | Sell (S) | −2,886 | -$2.05M | EDGAR |
| 2021-11-19 | REGN | Mixed | +161,176 | -$119.11M | EDGAR |
| 2021-08-20 | REGN | Sell (S) | −210,000 | -$136.61M | EDGAR |
| 2021-08-17 | REGN | Sell (S) | −10,000 | -$6.24M | EDGAR |
| 2021-08-10 | REGN | Mixed | +171,425 | -$118.05M | EDGAR |
| 2021-01-05 | REGN | Grant (A) | — | $0 | EDGAR |
| 2020-05-13 | REGN | Mixed | — | -$168.67M | EDGAR |
| 2019-12-13 | REGN | Mixed | +150,437 | -$54.45M | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.