Portman David J.
An insider at 1 company in coverage, as reported on Form 4. SEC CIK 2126186. Latest Form 4 filed Oct 29, 2026.
Roles
As stated on the filings: the relationship to the company and any officer title.
| Company | Role | Transactions | First | Latest |
|---|---|---|---|---|
| LeonaBio, Inc.LONA | 10% owner | 2 | 2026-10-26 | 2026-10-26 |
Transactions: 2
Every transaction reported, newest first, including grants, exercises and derivative securities. Purchases and sales (codes P and S) are open-market trades. The reported price is as stated on the form.
What these mean: insiders, Form 4, transaction codes, Rule 10b5-1 plans.
| Date | Company | Transaction | Shares | Reported price | Value | Filing |
|---|---|---|---|---|---|---|
| 2026-10-26 | LeonaBio, Inc.10% owner | PurchaseWarrant | 5,502,402 | $3,149.47 | $17.33bn | Form 4 |
| 2026-10-26 | LeonaBio, Inc.10% owner | Purchase | 3,149,470 | $3,149.47 | $9.92bn | Form 4 |
Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 31, 2026, 04:05 ET. Listed shows no prices and gives no investment advice.