---
schema_version: "secwatch.filing_event.v1"
accession: "0001683168-21-005746"
form_type: "8-K"
ticker: "XBIO"
cik: "0001534525"
company_name: "Xenetic Biosciences, Inc."
filed_at: "2021-11-16T23:59:59+00:00"
generated_at: "2026-06-28T07:45:43.419966+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Xenetic Biosciences exchanges 129,084 warrants for 51,634 common shares; amends 2019 Purchase Agreement

## Summary
- Warrants to purchase 129,084 shares exchanged for 51,634 common shares (0.4 ratio); all warrants cancelled.
- Section 4.12(b) of the 2019 Securities Purchase Agreement deleted as part of the amendment.
- No cash or other securities involved; exchange treated as cashless exercise under Section 3(a)(9).
- Company agreed to standstill from Nov 15-19, 2021, not to issue shares or file registration statements.

## SEC filing metadata
- accession: 0001683168-21-005746
- form_type: 8-K
- ticker: XBIO
- cik: 0001534525
- company_name: Xenetic Biosciences, Inc.
- filed_at: 2021-11-16T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1534525/000168316821005746/0001683168-21-005746-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1534525/000168316821005746/xenetic_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001683168-21-005746
- JSON: https://secwatch.observer/filing/0001683168-21-005746.json
- Plain text: https://secwatch.observer/filing/0001683168-21-005746.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.