Quick Takeaways
- Mardi Dier has 6 issuer positions tracked on this page.
- Estimated disclosed ownership value: $6,966,062.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Mardi Dier
- Location
- Agoura Hills, CA
- Summary
- The estimated net worth of Mardi Dier is at least $6,966,062 dollars as of 06 Mar 2026. Mardi Dier is the EVP and CFO of MADRIGAL PHARMACEUTICALS, INC. and owns shares of MADRIGAL PHARMACEUTICALS, INC. (MDGL) stock worth about $5.47M. Mardi Dier is the CFO & Executive Vice President of Ultragenyx Pharmaceutical Inc. and owns shares of Ultragenyx Pharmaceutical Inc. (RARE) stock worth about $1.4M. Mardi Dier is the Director of Adamas Pharmaceuticals Inc and owns shares of Adamas Pharmaceuticals Inc stock worth about $51.6K. Mardi Dier is the CFO and CBO of ACELYRIN, Inc. and owns shares of ACELYRIN, Inc. stock worth about $47.6K.
- Signature
- /s/ Mardi Dier
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Mardi Dier and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: MADRIGAL PHARMACEUTICALS, INC. ($5,466,248).
- Past-year value change for that position: -$3,772,798.
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of Mardi Dier
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| MDGL | MADRIGAL PHARMACEUTICALS, INC. | EVP and CFO | $5,466,248 | -$3,772,798 | -41% | 04 Mar 2026 |
| RARE | Ultragenyx Pharmaceutical Inc. | CFO & Executive Vice President | $1,400,595 | 14 Oct 2022 | ||
| ADMS | Adamas Pharmaceuticals Inc | Director | $51,585 | 02 Jun 2021 | ||
| SLRN | ACELYRIN, Inc. | CFO and CBO | $47,634 | 09 May 2023 | ||
| ORIC | Oric Pharmaceuticals, Inc. | Director | 02 Jan 2026 | |||
| PRLD | Prelude Therapeutics Inc | Director | 12 Jun 2025 |
Insider Transactions Reported by Mardi Dier:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.