Stephen W Webster
CIK 1438421 · CHIEF FINANCIAL OFFICER · last filed 2026-06-10
"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
$7.00M
Companies
11
Total Filings
64
Lifetime Open-Market Net
-$4.52M
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 |
|---|---|---|---|---|---|---|---|
| ELOX | Director | — | $13.52 | — | $0 | 1 | 2026-06-10 |
| NXTC | Director | — | $2.08 | — | $0 | 7 | 2025-06-24 |
| CGEM | Director | — | $13.70 | — | $0 | 5 | 2025-06-16 |
| Gritstone bio, Inc. (GRTS) Delisted | Director | — | $0.03 | — | $0 | 2 | 2024-06-20 |
| TCR2 THERAPEUTICS INC. (TCRR) Delisted | Director | — | $1.48 | — | $0 | 5 | 2023-06-01 |
| Nabriva Therapeutics plc (NBRV) Delisted | Director | 11,447 | $1.42 | $16.3K | $34.3K | 8 | 2022-08-04 |
| Viking Therapeutics, Inc. (VKTXW) Delisted | Director | 8,000 | $4.60 | $36.8K | $41.7K | 5 | 2020-01-03 |
| Spark Therapeutics, Inc. (ONCE) Delisted | CHIEF FINANCIAL OFFICER | 0 | — | — | -$4.60M | 15 | 2019-12-17 |
| VKTX | Director | — | $28.75 | — | $0 | 2 | 2016-01-06 |
| RPRX | SVP, Finance & CFO | 127,500 | $54.87 | $7.00M | $0 | 3 | 2010-09-13 |
| HEARUSA INC (EAR) Delisted | Director | — | $2.57 | — | $0 | 3 | 2010-06-14 |
Recent Filings · Page 3 of 7
64 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-12-11 | TCR2 THERAPEUTICS INC. (TCRR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-07-31 | Nabriva Therapeutics plc (NBRV) Delisted | Grant (A) | +17,500 | $0 | EDGAR |
| 2020-06-15 | NXTC | Grant (A) | — | $0 | EDGAR |
| 2020-05-04 | TCR2 THERAPEUTICS INC. (TCRR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-01-03 | Viking Therapeutics, Inc. (VKTXW) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-12-17 | Spark Therapeutics, Inc. (ONCE) Delisted | Mixed | −6,102 | -$698.7K | EDGAR |
| 2019-08-01 | Nabriva Therapeutics plc (NBRV) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-06-17 | NXTC | Grant (A) | — | $0 | EDGAR |
| 2019-01-23 | Spark Therapeutics, Inc. (ONCE) Delisted | Mixed | +2,487 | -$56.9K | EDGAR |
| 2019-01-17 | Spark Therapeutics, Inc. (ONCE) Delisted | Grant (A) | — | $0 | 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.