Xenetic Biosciences, Inc.
XBIO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001534525
No open-market purchases or sales by Xenetic Biosciences, Inc. insiders were filed in the last 90 days; 8 institutions reported holding it in 13F filings for Q2 2026, worth $442.8K in total; no superinvestor holds it.
Holders of 5% or more of XBIO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Xenetic Biosciences, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | 13G/A | 6.00%137.4K shares | −1.79 ppfrom 7.79% | Feb 12, 20262 filings | May 14, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
8 Schedule 13D and 13G filings on Xenetic Biosciences, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Sep 18, 20262:35 PM ET | MJL Manager LLCand 1 other | 13G | 0.00%0 shares | −5.50 ppfrom 5.50%Below 5% | Sep 16, 2026 | SEC |
| May 29, 20264:04 PM ET | MJL Manager LLCand 1 other | 13G | 5.50%126.7K shares | New | May 22, 2026 | SEC |
| May 14, 20264:47 PM ET | Renaissance Technologies LLCand 1 other | 13G/A | 6.00%137.4K shares | −1.79 ppfrom 7.79% | Mar 31, 2026 | SEC |
| Feb 12, 20262:15 PM ET | Renaissance Technologies LLCand 1 other | 13G | 7.79%178.5K shares | New | Oct 27, 2025 | SEC |
| Mar 18, 2024 | CLS Therapeutics, LLC | 13D/AOld format | – | – | – | SEC |
| Sep 18, 2023 | CLS Therapeutics, LLC | 13D/AOld format | – | – | – | SEC |
| Jun 15, 2023 | CLS Therapeutics, LLC | 13DOld format | – | – | – | SEC |
| Oct 21, 2022 | CLS Therapeutics, LLC | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Xenetic Biosciences, Inc. shares.
No Form 144 notices for Xenetic Biosciences, Inc. are on file.