---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-23-007938"
form_type: "8-K"
ticker: "BLGO"
cik: "0000880242"
company_name: "BIOLARGO, INC."
filed_at: "2023-03-27T23:59:59+00:00"
generated_at: "2026-06-17T16:03:36.551814+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# BioLargo extends CFO Charles Dargan's engagement through Jan 2024; grants option for 300,000 shares

## Summary
- CFO Charles K. Dargan II's engagement extended one year to January 31, 2024.
- Compensation: option to purchase 300,000 shares of common stock at $0.20/share.
- Option vests monthly (25,000 shares/month) starting March 21, 2023; expires in 10 years.
- No cash compensation; CFO eligible for business expense reimbursement (historically not requested).
- Prior extension expired January 31, 2023; agreement may be terminated on 30 days' notice.

## SEC filing metadata
- accession: 0001437749-23-007938
- form_type: 8-K
- ticker: BLGO
- cik: 0000880242
- company_name: BIOLARGO, INC.
- filed_at: 2023-03-27T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/880242/000143774923007938/0001437749-23-007938-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/880242/000143774923007938/blgo20230322_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-23-007938
- JSON: https://secwatch.observer/filing/0001437749-23-007938.json
- Plain text: https://secwatch.observer/filing/0001437749-23-007938.txt

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