---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-23-041874"
form_type: "8-K"
ticker: "SER"
cik: "0001708599"
company_name: "Serina Therapeutics, Inc."
filed_at: "2023-11-17T23:59:59+00:00"
generated_at: "2026-06-08T00:12:22.682187+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# AgeX draws $500k from secured note; Serina licenses POZ polymer tech to Pfizer

## Summary
- AgeX drew $500k under Amended Secured Convertible Promissory Note with Juvenescence; maturity Feb 14, 2024.
- Serina Therapeutics entered non-exclusive license with Pfizer for POZ polymer technology for LNP formulations.
- License agreement is potential milestone for Serina, which is merging with AgeX (S-4 filed Nov 14, 2023).
- AgeX's merger with Serina remains subject to stockholder and SEC approvals.

## SEC filing metadata
- accession: 0001493152-23-041874
- form_type: 8-K
- ticker: SER
- cik: 0001708599
- company_name: Serina Therapeutics, Inc.
- filed_at: 2023-11-17T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 2.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1708599/000149315223041874/0001493152-23-041874-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1708599/000149315223041874/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-23-041874
- JSON: https://secwatch.observer/filing/0001493152-23-041874.json
- Plain text: https://secwatch.observer/filing/0001493152-23-041874.txt

## Key facts
- Debt Financings
  Serina Therapeutics, Inc. incurred loan of $500,000 with Juvenescence Limited maturing February 14, 2024.
  - Instrument: loan
  - Principal: $500,000
  - Counterparty: Juvenescence Limited
  - Maturity: February 14, 2024
  - Event: incurrence
  source text: On November 15, 2023, AgeX drew $500,000 of its credit available under the Amended and Restated Secured Convertible Promissory Note, as amended, (“Secured Note”) with Juvenescence Limited (“Juvenescence”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1708599/000149315223041874/0001493152-23-041874-index.htm

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