Timothy B Lowinger
CIK 1709775 · SVP, Chief Sci.&Tech. Officer · last filed 2026-01-06
"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.
Loading insider history…
Disclosed Exposure
$0
Companies
1
Total Filings
37
Lifetime Open-Market Net
-$2.04M
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 |
|---|---|---|---|---|---|---|---|
| Mersana Therapeutics, Inc. (MRSN) Delisted | SVP, Chief Sci.&Tech. Officer | 0 | $29.08 | $0 | -$2.04M | 37 | 2026-01-06 |
Recent Filings · Page 2 of 4
37 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-12-20 | Mersana Therapeutics, Inc. (MRSN) Delisted | Exer (M) | +45,593 | $63.8K | EDGAR |
| 2021-08-24 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | — | -$10.7K | EDGAR |
| 2021-07-22 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | — | -$13.3K | EDGAR |
| 2021-07-19 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | +23,729 | -$199.1K | EDGAR |
| 2021-07-09 | Mersana Therapeutics, Inc. (MRSN) Delisted | Exer (M) | +20,000 | $28.0K | EDGAR |
| 2021-07-02 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | — | -$19.0K | EDGAR |
| 2021-06-23 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | — | -$16.9K | EDGAR |
| 2021-05-24 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | — | -$37.5K | EDGAR |
| 2021-04-22 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | — | -$45.0K | EDGAR |
| 2021-03-24 | Mersana Therapeutics, Inc. (MRSN) Delisted | Mixed | −2,227 | -$116.7K | 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.