ROBERT CHESS

CIK 1227886 · Chairman of the Board · last filed 2026-03-19

"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

$20.13M

Companies

3

Total Filings

84

Lifetime Open-Market Net

-$13.52M

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
TWST Director 63,612 $76.17 $4.85M -$4.03M 24 2026-03-19
NKTR Director 257,373 $59.38 $15.28M -$9.49M 58 2025-10-01
COTHERIX INC (CTRX) Delisted Director $0 2 2007-01-10

Recent Filings · Page 5 of 9

84 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2020-02-14 NKTR Mixed −16,000 -$261.9K EDGAR
2020-02-06 TWST Grant (A) +1,412 $0 EDGAR
2019-10-09 TWST Grant (A) $0 EDGAR
2019-10-01 NKTR Sell (S) −4,000 -$72.0K EDGAR
2019-09-27 NKTR Grant (A) +6,500 $0 EDGAR
2018-10-01 NKTR Grant (A) +4,750 $0 EDGAR
2018-09-21 NKTR Sell (S) −4,500 -$255.6K EDGAR
2018-06-07 NKTR Mixed -$409.0K EDGAR
2018-05-04 NKTR Mixed -$1.85M EDGAR
2018-04-09 NKTR Mixed -$2.08M EDGAR
Showing 4150 of 84
Page 5 of 9
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.