Stephen K Doberstein
CIK 1480111 · SVP & Chief Scientific Officer · last filed 2026-06-02
"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
$6.39M
Companies
3
Total Filings
42
Lifetime Open-Market Net
-$30.48M
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.
Recent Filings · Page 2 of 5
42 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-09-09 | NKTR | Buy (P) | +15,000 | $259.2K | EDGAR |
| 2019-08-19 | NKTR | Sell (S) | −3,245 | -$58.9K | EDGAR |
| 2019-05-17 | NKTR | Sell (S) | −3,461 | -$108.6K | EDGAR |
| 2019-02-21 | NKTR | Sell (S) | −3,310 | -$140.3K | EDGAR |
| 2018-12-18 | NKTR | Grant (A) | +23,950 | $0 | EDGAR |
| 2018-11-19 | NKTR | Sell (S) | −4,524 | -$173.0K | EDGAR |
| 2018-08-16 | NKTR | Mixed | +19,299 | -$391.3K | EDGAR |
| 2018-05-18 | NKTR | Sell (S) | −3,435 | -$286.4K | EDGAR |
| 2018-04-09 | NKTR | Mixed | — | -$13.53M | EDGAR |
| 2018-02-20 | NKTR | Sell (S) | −2,426 | -$201.2K | 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.