Roger D. Kornberg - 31 Dec 2025 Form 4 Insider Report for Xenetic Biosciences, Inc. (XBIO)

Role
Director
Signature
/s/ James Parslow, as attorney-in fact for Roger Kornberg
Issuer symbol
XBIO
Transactions as of
31 Dec 2025
Net transactions value
$0
Form type
4
Filing time
05 Jan 2026, 17:00:04 UTC
Previous filing
13 Dec 2024
Next filing
13 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Kornberg Roger D. Director 945 CONCORD STREET, FRAMINGHAM /s/ James Parslow, as attorney-in fact for Roger Kornberg 05 Jan 2026 0001444532

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction XBIO Stock Options Award $0 +2,500 $0.000000 2,500 31 Dec 2025 Common Stock 2,500 $2.17 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Options vest 100% on the twelve-month anniversary of the grant date.