Key facts
- RENAISSANCE TECHNOLOGIES LLC filed SCHEDULE 13G/A for Xenetic Biosciences, Inc. Common Stock, $0.001 par value per share (XBIO).
- Disclosed ownership: 6%.
- Date of event: 31 Mar 2026.
RENAISSANCE TECHNOLOGIES LLC - 31 Mar 2026 SCHEDULE 13G/A Report for Xenetic Biosciences, Inc. Common Stock, $0.001 par value per share (XBIO)
- Filing Manager
- RENAISSANCE TECHNOLOGIES LLC
- Reporting Manager
- Renaissance Technologies LLC
- Symbol
- XBIO
- Shares outstanding
- 2,290,667 shares
- Disclosed Ownership
- 137,440 shares
- Ownership
- 6%
- Form type
- SCHEDULE 13G/A
- Filing time
- 14 May 2026, 16:47:19 UTC
- Date of event
- 31 Mar 2026
- Previous filing
- 12 Feb 2026
- SEC
- View on sec.gov
Key filing fact
RENAISSANCE TECHNOLOGIES LLC disclosed 6% ownership in Xenetic Biosciences, Inc. Common Stock, $0.001 par value per share (XBIO) on 31 Mar 2026.
Change
- Previous schedule filing date: 12 Feb 2026.
- Current filing was accepted on 14 May 2026, 16:47.
Research use
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (2)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | 6% | 137,440 | 137,440 | 0 | Brian Felczak | Chief Financial Officer | |
| Renaissance Technologies Holdings Corporation | 6% | 137,440 | 137,440 | 0 | Brian Felczak | Vice President |
CIK / CUSIP context first