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.

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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 8 of 9

84 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2010-09-16 NKTR Grant (A) $0 EDGAR
2010-05-12 NKTR Mixed -$273.9K EDGAR
2009-09-22 NKTR Grant (A) $0 EDGAR
2009-09-17 NKTR Grant (A) $0 EDGAR
2008-12-04 NKTR Grant (A) $0 EDGAR
2008-11-18 NKTR Exer (M) +9,167 $0 EDGAR
2007-09-21 NKTR Grant (A) $0 EDGAR
2007-03-22 NKTR Sell (S) −17,700 -$216.5K EDGAR
2007-03-21 NKTR Mixed +52,083 $521 EDGAR
2007-01-10 COTHERIX INC (CTRX) Delisted Disp (D) $0 EDGAR
Showing 7180 of 84
Page 8 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.