Mardi Dier
CIK 1574591 · EVP and CFO · last filed 2026-03-06
Mardi Dier is an EVP and CFO who has filed 77 SEC Form 4 insider transactions across 7 companies since 2013. The most recent filing, for MDGL, was dated Mar 6, 2026. Across all open-market trades the lifetime net is −$16.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.8M across reported positions.
"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.
$8.83M
7
77
-$16.59M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MDGL | EVP and CFO | 13,086 | $538.80 | $7.05M | -$4.49M | 6 | 2026-03-06 |
| ORIC | Director | — | $11.91 | — | $0 | 7 | 2026-01-06 |
| PRLD | Director | 10,000 | $4.64 | $46.4K | $190.0K | 7 | 2025-06-13 |
| ACELYRIN, Inc. (SLRN) Delisted | CFO and CBO | 6,431 | $2.27 | $14.6K | $131.5K | 1 | 2023-05-11 |
| RARE | CFO & Executive Vice President | 66,695 | $25.98 | $1.73M | -$813.8K | 7 | 2022-10-17 |
| Adamas Pharmaceuticals Inc (ADMS) Delisted | Director | 10,000 | $8.22 | $82.2K | $0 | 5 | 2021-06-04 |
| PORTOLA PHARMACEUTICALS INC (PTLA) Delisted | EVP and CFO | 10 | — | — | -$11.60M | 38 | 2020-07-02 |
Recent Filings
77 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-06 | MDGL | Notice (144) | −1,336 | -$587.0K | EDGAR |
| 2026-03-06 | MDGL | Mixed | +3,233 | -$854.0K | EDGAR |
| 2026-03-06 | MDGL | Notice (144) | −646 | -$283.8K | EDGAR |
| 2026-03-02 | MDGL | Sell (S) | −1,183 | -$505.4K | EDGAR |
| 2026-03-02 | MDGL | Notice (144) | −1,183 | -$511.1K | EDGAR |
| 2026-01-06 | ORIC | Grant (A) | — | $0 | EDGAR |
| 2025-12-03 | MDGL | Mixed | — | -$1.36M | EDGAR |
| 2025-12-02 | MDGL | Notice (144) | −4,173 | -$2.42M | EDGAR |
| 2025-06-13 | PRLD | Grant (A) | — | $0 | EDGAR |
| 2025-03-12 | MDGL | Sell (S) | −258 | -$83.3K | EDGAR |
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.