JEFFREY M LEIDEN
CIK 1242825 · Executive Chairman · last filed 2026-05-11
"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
$28.67M
Companies
4
Total Filings
121
Lifetime Open-Market Net
-$544.74M
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 |
|---|---|---|---|---|---|---|---|
| ODTX | Director | 298,896 | $26.39 | $7.89M | $100.0K | 1 | 2026-05-11 |
| VRTX | Executive Chairman | 35,237 | $548.05 | $19.31M | -$543.95M | 88 | 2026-02-26 |
| DGX | Director | 6,000 | $244.39 | $1.47M | -$890.2K | 15 | 2018-05-30 |
| MILLENNIUM PHARMACEUTICALS INC (MLNM) Delisted | Director | — | — | — | $0 | 2 | 2008-05-15 |
Recent Filings · Page 2 of 13
121 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 |
|---|---|---|---|---|---|
| 2025-02-14 | VRTX | Mixed | +4,684 | -$1.14M | EDGAR |
| 2025-02-06 | VRTX | Grant (A) | +15,414 | $0 | EDGAR |
| 2024-09-04 | VRTX | Sell (S) | −3,784 | -$1.89M | EDGAR |
| 2024-08-30 | VRTX | Notice (144) | −3,784 | -$1.87M | EDGAR |
| 2024-02-21 | VRTX | Tax (F) | −4,118 | -$1.73M | EDGAR |
| 2024-02-16 | VRTX | Sell (S) | −9,011 | -$3.78M | EDGAR |
| 2024-02-15 | VRTX | Notice (144) | −4,655 | -$1.95M | EDGAR |
| 2024-02-14 | VRTX | Notice (144) | −4,356 | -$1.83M | EDGAR |
| 2024-02-14 | VRTX | Sell (S) | −3,393 | -$1.42M | EDGAR |
| 2024-02-13 | VRTX | Notice (144) | −737 | -$308.9K | 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.