Roger D. Kornberg

CIK 1444532 · last filed 2026-01-13

"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

$67.5K

Companies

4

Total Filings

17

Lifetime Open-Market Net

$0

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
COCP Director 67,878 $0.99 $67.5K $0 6 2026-01-13
XBIO Director $3.20 $0 5 2026-01-05
Xenetic Biosciences, Inc. (XBIOW) Delisted Director $17.54 $0 5 2023-12-08
PLX Director $2.09 $0 1 2008-09-08

Recent Filings · Page 2 of 2

17 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2020-12-08 Xenetic Biosciences, Inc. (XBIOW) Delisted Grant (A) $0 EDGAR
2020-06-24 COCP Grant (A) $0 EDGAR
2019-12-06 Xenetic Biosciences, Inc. (XBIOW) Delisted Grant (A) $0 EDGAR
2018-11-30 XBIO Grant (A) $0 EDGAR
2017-11-17 XBIO Grant (A) $0 EDGAR
2016-12-23 XBIO Grant (A) $0 EDGAR
2008-09-08 PLX Grant (A) $0 EDGAR
Showing 1117 of 17
Page 2 of 2
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.