Willard H Dere
CIK 1311569 · last filed 2026-06-11
"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
$2.78M
Companies
5
Total Filings
61
Lifetime Open-Market Net
-$619.5K
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 |
|---|---|---|---|---|---|---|---|
| MGX | Director | — | $1.20 | — | $0 | 3 | 2026-06-11 |
| BMRN | Director | 46,440 | $55.95 | $2.60M | -$547.6K | 13 | 2026-06-04 |
| Mersana Therapeutics, Inc. (MRSN) Delisted | Director | 0 | $29.08 | $0 | $0 | 17 | 2026-01-06 |
| MCRB | Director | 31,746 | $5.70 | $181.0K | $0 | 10 | 2025-04-11 |
| Radius Health, Inc. (RDUS) Delisted | Director | 1,895 | $30.00 | $56.9K | -$71.9K | 15 | 2022-08-15 |
Recent Filings · Page 2 of 7
61 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-04-03 | MGX | Grant (A) | — | $0 | EDGAR |
| 2024-01-04 | Mersana Therapeutics, Inc. (MRSN) Delisted | Grant (A) | +6,112 | $0 | EDGAR |
| 2023-10-04 | Mersana Therapeutics, Inc. (MRSN) Delisted | Grant (A) | +11,011 | $0 | EDGAR |
| 2023-07-06 | Mersana Therapeutics, Inc. (MRSN) Delisted | Grant (A) | +4,217 | $0 | EDGAR |
| 2023-06-23 | MCRB | Grant (A) | — | $0 | EDGAR |
| 2023-06-12 | Mersana Therapeutics, Inc. (MRSN) Delisted | Grant (A) | +14,467 | $0 | EDGAR |
| 2023-05-24 | BMRN | Grant (A) | +4,190 | $0 | EDGAR |
| 2023-04-05 | Mersana Therapeutics, Inc. (MRSN) Delisted | Grant (A) | +3,375 | $0 | EDGAR |
| 2022-08-15 | Radius Health, Inc. (RDUS) Delisted | Mixed | −23,195 | -$231.9K | EDGAR |
| 2022-07-06 | MCRB | Grant (A) | +31,746 | $100.0K | EDGAR |
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.