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 3 of 5
42 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2017-12-19 | NKTR | Grant (A) | +26,000 | $0 | EDGAR |
| 2017-11-17 | NKTR | Mixed | +12,718 | -$211.5K | EDGAR |
| 2017-11-08 | NKTR | Mixed | — | -$7.72M | EDGAR |
| 2017-10-10 | NKTR | Mixed | — | -$674.4K | EDGAR |
| 2017-08-18 | NKTR | Sell (S) | −1,701 | -$32.9K | EDGAR |
| 2017-05-18 | NKTR | Sell (S) | −1,701 | -$33.3K | EDGAR |
| 2017-04-07 | NKTR | Mixed | — | -$1.22M | EDGAR |
| 2017-02-17 | NKTR | Sell (S) | −1,261 | -$16.6K | EDGAR |
| 2016-12-15 | NKTR | Grant (A) | +17,500 | $0 | EDGAR |
| 2016-11-18 | NKTR | Sell (S) | −670 | -$9.4K | 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.