---
schema_version: "secwatch.filing_event.v1"
accession: "0001683168-21-004865"
form_type: "8-K"
ticker: "XBIO"
cik: "0001534525"
company_name: "Xenetic Biosciences, Inc."
filed_at: "2021-10-15T23:59:59+00:00"
generated_at: "2026-06-28T20:33:09.139495+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Xenetic Biosciences amends Pharmsynthez agreement; terminates prior work order, enters new one with $40K payment

## Summary
- Entered Amendment Number One to Master Service Agreement to terminate the prior Work Order with Pharmsynthez.
- Executed a new Second Work Order for XCART technology development services upon written request.
- Made a one-time $40,000 payment: $21,000 settles prior obligations, $19,000 creditable against future costs.
- No further services under prior Work Order; all future work requires new work orders.

## SEC filing metadata
- accession: 0001683168-21-004865
- form_type: 8-K
- ticker: XBIO
- cik: 0001534525
- company_name: Xenetic Biosciences, Inc.
- filed_at: 2021-10-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 1.01, 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1534525/000168316821004865/0001683168-21-004865-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1534525/000168316821004865/xenetic_i8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001683168-21-004865
- JSON: https://secwatch.observer/filing/0001683168-21-004865.json
- Plain text: https://secwatch.observer/filing/0001683168-21-004865.txt

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